Aikido line stage manual 12v Priced 25% below cost. I have misplaced the manual too! Probably from looking at it so much! Thank you! That formula is exactly, what I am going to use. E I have a major new revision of the old Aikido stereo noval PCB, Rev. given using same components, same tubes, same system setup. For offer is a BRAND-NEW NOS 12AU7 based line stage featuring, line level full buffering, all audiophile film caps in audio path and separate fully rectified and filtered B+ and filament supplies providing a dead quiet floor. Apr 11, 2007 · Try this experiment: Take an Aikido line stage and rejigger the cancellation resistor string to have a trimmer in the middle, adjustable 10-20% on each side of the calculated null point. The one difficulty I had (and it was a big one) was that the board did not match the manual which did match the description regarding the voltage divider. The regulator would be after the diodes on the DC side anyway. Net. Jun 20, 2016 · Hi gentlemen, After an 8+ years pause, I've decided to resume my low voltage aikido hpa project based on Mr. Nov 7, 2024 · The game changer for me was realizing that I could take elements from things I love like a HH Scott phonostage and a push pull line stage from a DIY article, my own input switching arrangement and a power supply schematic, modified to work, put it all in the same box and get exactly what I want without making any compromises. 25 amount of gain, or 4, to counter the B+ ripple, as -1 + 1 = 0. And connect the output that does not have a pot to the subwoofer. Warning Oct 11, 2007 · Search titles only By: Search Advanced search… Manuals. Power to the control box must be on. For a tube (electronics for that matter) newbie, I have a few questions regarding construction. small amount in the phono stage with the volume up high. Aug 28, 2024 · the aikido phono is 2 line stages with RIAA between em. (I chose 48V B+, 12BH7 route) However, I have two questions for you guys: First one: In the manual it is stated Internal Shields If the triode’s pin 9 Aug 30, 2013 · DIY Audio Projects; Activity. Note that the PS noise is not attenuated (just a 0. 1 chassis away from the fuel line or moving SPECIFICATIONS P/No. Just curious if both should sound similiar or the one with gain would sound better. This circuit is from the RCA tube receiving manual. Nov 18, 2021 · Although Erhard makes a power supply PCB for the Aikido stage, it won't provide the extra current for the remote control (up to 0. You can either add a small separate 12v 300ma transformer to run the rectifier tube, Jul 11, 2005 · RV2 Hello again Bas, Thanks for that, I thought I'd missed something! Having just seen the boards built by Jacques77 I'm wondering if it would be possible to mount the components on the other side of the board,ie the track side and leave the octal bases on the correct side. The Aikido will substitute for his fully tweaked Bottlehead Foreplay-style line stage that has an expensive stepped attenuator, fairly pricey jacks, regulated power supply in a separate enclosure, some oil caps and Auricaps thrown in for good measure and other tweaks and fancy parts too numerous to mention. Comes with manual. Nov 1, 2024 · I'm thinking about building a tubed line stage - pretty much decided on an Aikido, Not being able to run 12V heater tubes is no problem for me, there's enough 6 May 12, 2020 · 6) 12v heater supply to take advantage of Eba with a series/parallel selector switch so that I might try 12SN7s 7) Signal I/O and PSU I/O on opposite sides of the board for chassis layout purposes. The PCB color is now red, but the real difference is found in two major changes: each channels's B+ RC filter is made up of pure polypropylene (no electrolytic) capacitance and each channel gets its own separate heater power supply. If you are tempted to try DIY the Aikido line stage as done by John Broskie, aka Mr. Think I start to build the Aikido line stage with 2*6n2p-ev View and Download IMG STAGE LINE MPX-205/SW instruction manual online. It's been a fun project. Oct 23, 2018 · However I would really like to make a good quality valve preamp[line stage] and even a phono one as well as mine is a tiny solid state Rega. Sep 9, 2019 · The Aikido has 100k pot on one output, and no pot on the other output, right? And there a pot at the Aikido input, right? Then connect the Aikido output that has the 100k output pot to the amplifier that drives the speakers. 36. I think I have it figured out, my Aikido sounds amazing, so feel free to ask me any questions, I def. Has anybody gone this route or done any investigation? My Own Aikido 12Vac Line Stage The Aikido 12Vac board holds stereo Aikido line amplifiers. The overall voltage gain of the circuit is about 8. Basically, no info at all. Aug 1, 2021 · I'm only going to select from three inputs (phono and two line-level). Joined 2006. What I want to do is to use this as a preamp to drive my Mac MC40 amps. Found a link on the web about reducing the game of the Aikido board. Jul 20, 2008 · here is my aikido finally finished and feeling at home in a for what i think a nice cherry wood housing. The CCDA has the option for using a small amount of positive feedback for more distortion. They can be wired for 9 pin or octal. Aikido Line Stage Amplifier Kit (octal-based & stereo). Page 8: Power-Supply Capacitors Mar 11, 2018 · New Aikido Stereo Noval PCB . The punch line is that just because this Aikido PP headphone amplifier was optimized to to work into a 300-ohm load doesn't mean that it won't make an exemplary line stage amplifier (and make your friend's fancy $5,000 line stage amplifier sound cheap in comparison ;). Please see thread link below. Feb 23, 2018 · Some time back I buit an Aikido line stage with a phono stage in a reproduction PAS chassis. I’ll probably end up picking up a potted toroidal transformer when I have the time to search for an appropriate one. 6bx7 maybe, its a twin triode wirh a mu of 10, and its indirect heat which makes it a little less fussy to use. 3-0-6. But build the 12Vac aikido. The F4 needs voltage swing on it's input, not power. Joined: Not being able to run 12V heater tubes is no problem for me (One day, I will build a 400V Aikido line-stage amplifier with eight 6J5 single-triode tubes, four per channel, with four low-voltage heater regulators, two per channel, one referenced to 80V, while the other is referenced to 280V. 094 inches (inserting and pulling tubes from their sockets won’t bend or break this board), double-sided, with plated-through 2oz copper traces, and the boards are made in the USA. I decided that the project itself would be modelled on the VTA style, as there was not much sense to me to reinvent the wheel. 7 STAGE SWITCHMODE. Note how sharp the null is. We help you to find your user manual. I had just been listening to my Unbalancer circuit, which I like a great deal. " Both halves of the line stage are using ECC88 so why are the tube triodes inverted for the other channel? Can we not use pin 2 input for each side ? Jan 20, 2020 · Yep, I have manuals for the PS and Pre boards. INTELLI-CHARGE IC25 battery charger pdf manual download. Aikido Line Stage manual. My Aikido is the bigger sibling to the more basic Aikido outlined in the line stage series from 2016. I started shopping for the tubes and wasn't too happy with the price of the 6SN7's so I figured I go with the equivalent 12SN7 but the price on those is a little high, too. ma_coule. On the other hand, if you are employing a tube-based line-stage amplifier, then big output voltage swings are not a concern; or at least they shouldn't be. OK here's the thing. The output stage of the circuit is a Cathode Follower and is suitable to drive a low impedance amplifier. SS power supply rather than a tube rectifier with a single Antek Oct 20, 2010 · I also upgraded the 12AU7s in the Aikido line stage from RCA Cleartops to good/used Amperex Bugle Boys. Feb 28, 2006 · CLCRCRC PS with regulated 12V DC heaters. Of course you could build a 24v Whammy, that would drive the F4 to full and you'll have a wonderful headphone amp as well. Don't give up. of Milton, Ontario had the high bid and is the proud (I hope) owner of the over-achieving line stage whose build I detailed. The Aikidos require two tubes per channel, four dual triodes for a stereo preamp. Just me, but if i were after a low mu triode for a preamp it would be some other tube. I used tube nervana dual power supply, ph10 phono board and Aikido line stage. Apr 17, 2013 · If you use a 12v supply, which seems the recommended value for typical TPA3110 designs, you'll get 2. LED Indicators. The output impedance will be less than 600 ohms. I image there shouldn't be many pieces/values to change on the PCBs. The circuit is textbook Aikido (not that any textbook holds the Aikido topology). The pre Bourds are set up for ECC99 tubes. The single-ended Aikido topology is perfect for line stage use. ) Still another possibility is to make a bipolar, low-voltage power supply out of the two low-voltage regulators. Aikido push-pull topology is perfect for high-impedance headphones, 250 to 600 ohms, as it allows up to twice the idle current to be delivered Jul 11, 2005 · It is possible to separate the CT on these (at least the ones RS sells in Canada) to give 2 6. It contains a full-wave bridge rectifier circuit and reservoir capacitor, which is then Jan 23, 2009 · for the Aikido Line Stage Kit Bottlehead Foreplay II and Paramours; DIYHIFISupply Ella; Hagerman Cornet2, Clarinet, and Piccolo; Cinemag switchable SUT; Audio Note Kits Amp One. The bottom of the chassis, like so many other bottoms, isn't as good looking. But I wanted new. I'd really any appreciate any layout advice to help minimize EMI/RFI. When using 12AU7 and 12SN7, S3 onboard switch must be set to 12V position. 6v so the transformer is cheaper and the tube itself is also pretty cheap. 5W from the F4. I've been reading over 5 times. Now adjust that trimmer. Apr 20, 2017 · The interconnects between amp and line stage will connect the line stage to ground. Our database contains more than 1. By including the necessary components for the heater and high voltage B+ power supplies on the PCB, the5687 All in One board makes building a standard-setting line stage Feb 19, 2022 · Heater: 12v 12SL7' - V1 and V2 - J1 and J3 (parallel) 6BL7 - V3 and V4 - J5 (series) 6BL7' - V1 and V2 - J2 (series) 12SL7' - V3 and V4 - J4 and J6 (parallel) I think all the tubes in his doc would work fine. I read the build manuals and the PS board is populated properly. I would use the May 6, 2018 · Here is the schematic of one of the two Aikido line-stage amplifiers on the PCB. Feb 12, 2020 · Look at the Broskie Aikido line stages at Tubecad. He didn't have power supply boards (I used his LV-1 in my latest line stage) back then so I borrowed a schematic from a friend. Troubleshooting. il likely start with the aikido octal, as im finishing up 2 organ amp rebuilds and a DG SE-1 scratch build. And now that I'm looking at the transformer it is a 6. a 12AX7 input tube will yield a gain close to 50 (mu/2) whic would be suitable for an SE amplifier's input stage," I'm going to swap the 12AT712AU7 for 6N1Ps (with heaters in series) and possibly increase the HT from 210 to 250v. Dec 9, 2018 · R14 = 100K for Aikido Octal Stereo PCB - for Line Amplifier R14 = 10 ohm for Aikido Octal All-in-One (Power Supply) - Look at page 10 House Ground Better to read the manual at least 2 times or more. Mar 27, 2019 · It’s built to be able to be run off of a 2amp 12v ac wall wart. From the manual I have the J1-7 figured out for the tubes I'll use (6N1P and 5687). Although this custom Aikido kit isn't all that is needed, it is a great start. For example, a 6DJ8-based Aikido line-stage amplifier can turn 1Vpk of input signal into 16Vpk of output signal. The Aikido I built used a dual regulated supply that cost a bit of $$. C. mikemac. Jan 14, 2023 · I was looking for a low gain, line stage design and landed on the JE Labs 76/6SN7 design, which is the basis of the pre that I'll be building. E. But, it sucks just as much as the separate manuals, I ended up reading the manuals for everything related to power supplies and aikidos I could, including the 9-pin manual which is a bit better. The manual talks several times about using a AC 12v wall wart. PAS-AIKIDO Line Preamp Upgrade Kit assembly and installation instructions 02-2022 v1 Overview The circuit board is the same size as the original PC5 board, 5. unity gain. This seemed like a good place to start as it sat in between the recommended voltage for two 6DJ8 tubes (150V) and the 6CG7/6DJ8 combo (200V) as listed in the manual. Jan 8, 2016 · Broskie's "All in One" Phono section and his "All in One Aikido Line stage" are too big to fit into my chassis, so I am going to use the regulators and power supply from the phono PCB to power the Aikido stand-alone line stage. Comes with the manual for 100 bucks. 🙂 On the Aikido line stage drawing it shows connections for input 2 "tube 1" and pin 7 input "tube 2. suitable for a phono preamp or a SE input stage; a 6SN7 (5692) or 12SN7 input tube will yield a gain near 10, which would be excellent for a line stage amplifier; the BL7 or 6BX76 in the output stage (V1 & V4) would deliver a low output impedance that could drive capacitance-laden cables or even high-impedance headphones. EN. I have a few tube line stages I want to use the PS-21 with: Aikido Octal 6SN7 linestage - 300V 6N1P linestage - - 280V Jul 13, 2008 · For example, a 12AX7 input tube will yield a gain close to 50 (mu/2) per Aikido stage, which perfect for a phono preamp; the 6DJ8/6922, 16 (mu of 33), which is a little weak, but if a step-up transformer is used, the 6DJ8’s lower noise contribution would certainly override the concern about its low gain. Joined: Not being able to run 12V heater tubes is no problem for me Jul 11, 2005 · In my case it just a journeya little research. PC400 PC800 PC1600 PC2100 Type 6 stage 6 stage 6 stage 6 stage Input (nominal) 240VAC, 50Hz 240VAC, 50Hz 240VAC, 50Hz 240VAC, 50Hz Input Power 132W 240W 432W 600W Output Voltage 12V 12V 12V 12V Output Current 1, 2, 4A 2, 4, 8A 2, 4, 8, 16A 2, 6, 12, 21A Minimum Start Voltage 3. 9 C PCB. Wired on turret boards in a bespoke chassis, with a stepped attenuator, regulated filaments and B+, Mundorf Supreme output caps, and a combination Aug 2, 2024 · im doin all 12AT7 for this phono amp, but im excited for the many possibilities. F. REVIEW: Glass-Ware Aikido Line Stage Kit Preamplifier (Tube) 96. A decent sounding one can be made to run on as little as 80 volts B+ up to 300 volts B+. $49 + nominal shipping. 3. I know with the line stage you have gain vs. There were some mistakes on the board which I discovered and corrected. Aikido Noval Rev. The AIKIDO circuit delivers the sonic goods. 47uF and 100k resistor at the bottom 5687) as the cascode has very low PSRR. Ponder that a bit. I have heard good things about GlassWare kits and their performance. If a cathode resistor bypass capacitor is used on the input stage's bottom triode, then the two resistor voltage divider ratio must be changed from 50% to match the new AC noise divider ratio imposed by the input stage. I have a 6SN7 Aikido line stage made with an older Glassware board that is an all in one. I had a slight hum through the phono stage at max volume. So are CCDA, SRPP and Cathode follower (I assume that is what you meant). The amplifier circuit is a point to point wired version based on the All-In-One board that I used for my headphone amp (see my previous post). May 8, 2012 · I just ordered my kit from Glassware, I went with all four 6CG7 tubes for now, and ordered all the parts I could from him. You still might have too connect the line stage chassis to the 3rd pin ground (or the power amp chassis). Connect the RED lead (battery clip) from the charger to the vehicle’s chassis away from the fuel line or moving parts. i have an aikido octal, noval and 12V in the cuereally im not sure what to start with. The best way to determine this is experimentally. Different voltage mean wrong jumpers. They are mono octal boards requiring separate B+ and filament Dec 17, 2016 · The Aikido is a specific topology. I had some made and they look great. Mar 26, 2019 · It looks like you should wire it up just like the drawing and remove all those grounds you have going to the chassis. Jan 2, 2022 · The preamp signal path will be Input Selector -> Attenuator -> Line-Stage Buffer, so there will only be one active stage. Even with a slow turn on, which is actually a delayed upcoming of the high tension, loading the cap will be significant slower than Aikido 12Vac Aikido Line-Stage Amplifiers Aikido Noval Stereo Aikido Octal Stereo PCB Attenuators and Signal Selecters Attn-1 Stepped Attenuator Attn-12 Stepped Attenuator Attn-2 Stepped Attenuator Attn-Ladder Stepped Attenuator Audio Gadgets Balance Trim Balanced to unbalanced Capacitors and Sockets Cathode-Coupled Amplifier Cathode-Coupled Jan 9, 2012 · Each PCB holds two Aikido line-stage amplifiers; thus, one board is all that is needed for stereo unbalanced use (or one board for one channel of balanced amplification). Broskie's PCBs are first rate. 57015 Battery Charger manuals and instructions online. The only way to hear hum is putting the ear In fact, if you do not plan on powering a phono stage with the CCDA Noval PCB and plan on using it as a stand alone line stage amplifier, then the lower B+ voltage is the way to go, as the 200V capacitors are much higher in capacitance and a tube such as the 6N6P or ECC99 or 6H30 could be run hard (lots of idle current). Connect a very ripply supply, maybe a volt or two worth. 5A) and switching relay PCB. It’s been almost two years since I first wrote about building an Aikido line stage amplifier based on the low-plate-voltage, dual-triode tube, the 6GM8 (AKA ECC86 and 6N27P). Go with his default listing. This isn't mentioned under In fact, a stereo Aikido line stage can be made from just three tubes. The boards are all marked Top and Bottom with the intent that the tubes are mounted on top and all the stuffing is on the bottom. Broskie suggests an outboard power supply. Jan 8, 2016 · I concur, although I imagine they are very similar, I have yet to find a build manual for the noval dual mono boards on the glassware site vs the the LV aikido etc. You'll notice the difference. 5 Amp 5 Stage; Yuasa SmartShot Automatic 12V 1. If the first stage handed off 33% of the B+ ripple, then the second stage would have to muster a gain of 3 to counter it. Since your building a 12v version you should be ok. Joined 2010. In other words, much less PS noise noise will need to be injected into the cathode follower's bottom triode's grid. I have spent day after day reading through various preamp threads but I have not found one that documents the build completely in a way that makes it possible to just buy the parts and Nov 24, 2014 · I came across several 5687 tubes in my stash from years back. You aren't guaranteed 100% grounding of the line stage this way. The Aikido circuit may be humble but like most it needs proper implementation (see part 1 of the series). Look under "improving the Aikido Aug 16, 2010 · The key advantage of the LV Aikido is that it can operate under relatively low B+ voltage. The iron is a Hammond 266 for the heaters, and a Hammond toroid for the B+. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Feb 25, 2016 · I'm about to purchase an unbuilt Aikido Octal line stage kit, includes board and all parts to build the board along with a matched quad of RCA 12SN7 tubes. Our voltage divider has two functions: 1. co. I lived in a very rural area and the power was noisy and fluctuated between 120v and 127v. I've got a couple of remote volume controls to try. To my mind a 12AX7 is not the best tube for a line stage. All of the circuits could provide the characteristics you describe, depending on on how they are If it reads more than a few volts, try reversing the line-stage amplifier’s plug as it plugs into the wall socket. Jun 30, 2021 · How long do tubes last while maintaining good sound both by an Aikido line stage and an ACF (Aikido Cathode Follower) ? Some guys claim, normal line stages and cathode follower haven't the advantage concerning PSRR but the advantage concerning greater insensitivity to the effects of tube aging. Jul 20, 2008 · Would the Aikido line stage be compatable with a dantimax control board controlling an alps motorpot? M. Swapped in better caps with the correct orientation and believe it or not, it's dead quiet and actually sounds pretty good. I'll pull downstream from the 12V regulator to power the "on" LED on the front panel. Over the past 8 years, I've built, re-built, modified and loved them all. The gain was very high. it is dead quiet with the pcb ground tied directly to earth from iec inlet. 3V transformer (3A) so I should be good to go. I suppose I'll need to verify the B+ voltage and whatnot in order to know what values to substitute. 0V 3. Also all the AC wiring was twisted. But, in addition to the Aikido ACF tube buffer, I will incorporate an AMB A24 buffer. Jul 11, 2005 · Hello Renron, Please measure the voltage on the divider with the 47uF cap when you put on the amp. Whatever the manual is, it's too general. Jan 8, 2016 · If you want to build an octal Aikido line stage, a fellow on DIYaudio has designed a mono board and posted the Gerber files so you can order them from the PC board fab of your choice. 86. It will work but definitely not optimal. Post subject: Newb questions enclosedAikido line stage build. The Schematic : Because - BasAudio. Broskie Aikido 24Volts pcb. 3V, if I understand correctly. This was in comparison to my two-chassis, tweaked-out Aikido line stage. It offers low distortion, low output impedance, a great PSRR Feb 19, 2022 · Maybe the issue is this: You have two secondaries of 6. Download CEN-TECH 57015 PDF manual. Nov 15, 2008 · The schematic of post 1 is the cascode version of the Aikido, due to the high gain probably not suited as a line stage. 2011-06-06 5:39 am #12 Jun 13, 2019 · Must be 15 years ago that I came across John's then new Aikido design and I built the octal dual mono design. Best to ask people in here for those missing parts unless you get answer from John. 246 [ Follow Ups ] [ Post Followup ] Thread: [ Display All Email ] [ Amp/Preamp Asylum ] Aug 10, 2023 · A few people have built the 12v version if the Aikido and liked them also. For example, an Aikido line stage based on a 12AX7 input tube will provide a gain of about 50 (or +34dB), which is plenty. Tubecad. the last one they had was ph-2. I have the Raleigh Audio line stage which has 8dB gain. 12 VOLT, 7 STAGE SWITCHMODE. phono preamp or a SE amplifier’s input stage; a 6FQ7 (6CG7) input tube will yield a gain near 10, which would be excellent for a line stage amplifier; the 6DJ8 or 6H30 in the output stage would deliver a low output impedance that could drive capacitance-laden cables or even high-impedance headphones. Sep 19, 2024 · Post subject: Newb questions enclosedAikido line stage build. Posted: 10 Sep 2009 7:14 pm . Mar 1, 2024 · This is a blank PCB for 9 pin Aikido line stage PCB that has a built in power supply. 000. Each PCB holds two Aikido line-stage amplifiers; Carefree of Colorado Service Manual IRAGE TAGE Programming the RF Receiver for a Remote When adding or replacing a remote control or receiver, it is necessary to program the transmitter and receiver. This one has a 3 terminal 12V regulator on board. Operation. I could probably figure out a way to adapt the 24V from the PSU, but I decided to use a 12V transformer I had on hand. 5 Amp 5 Stage Manuals Manuals and User Guides for Yuasa SmartShot Automatic 12V 1. needed some help along the way Nov 3, 2016 · Thank you for your comment and interest in Wall of Sound. You will find everything you need in there. It wasnt a cheap build, but im happy with it. JB has helped me with the design of an Aikido Headphone amp with dual outputs, one OTL and the other for a pair of Sowter 8665 output trannies Apr 26, 2019 · I know there's all kinds of variables but I'm getting a new tube pre and it's extremely versatile in the different types of tubes it can use. Aikido PP The Aikido Octal PCB allows either the original single-ended Aikido or the new Aikido push-pull topology to be implemented. Overall picture, close up of the jack plate and how it's wired etc. Hat's off to you, especially as a beginner for executing such a technically advanced build, elegantly completed. I bought an assembled line stage and phono preamp board with some accessories. For the line stage 12AX7 I've tried JJ, Tung-Sol CEN-TECH 57015 User Manual View and Read online. 8) Fastons for PSU connections, Screw terminals for signal connections. So i goggled info about them and found this nifty line stage that people are commenting positive marks. Jul 11, 2005 · Bas-I finally found a supplier with the Hammond 269AX in stock. Then the Aikido cathode follower will null the 50% of the power-supply noise that the input stage leaks. The only hum I have is a. A. ) To provide an elevated voltage for referencing the heater supplies. Jun 9, 2019 · :thumbsup: i really think it's in the way its grounded. I bought a few and they look good. com. ••• Jan 19, 2015 · Adventures with Aikido: The Line Stage About two years ago I machined the case work for an Aikido line stage and a year ago I finally got around to assembling it. Each PCB holds two Aikido line-stage amplifiers; Nov 15, 2021 · Just finished a new project. The PS-21 is the same width as the new Aikido Octal, so it can be placed right up against the new board. FM3 Zone had the face plate made as to what I wanted. uk ensures that you will find the manual you are looking for in no time. Your 12v and ground from the wall wart connect to the power input on the board with no other grounds from the board or RCA Jack's going to chassis. need to learn more about this two design. View and Download Projecta INTELLI-CHARGE IC25 manual online. Page 14 Aikido 5687 Stereo All-In-One PCB B-plus Power Supply The high voltage B-plus power supply resides on the Aikido 5687 All in One PCB. 2. CONNECTION IN VEHICLE (POSITIVELY EARTHED) STEP 2C - CONNECTION IN VEHICLE WITH HARNESS (AC150 & AC250B ONLY) Connect the RED ring terminal of the harness to the Positive (+) battery terminal. The line output attaches to the Aikido’s cathode follower output stage via coupling capacitor C1. The glass "envelope" contains the tube structure. PAGE 14 For example, if 25% of the power-supply noise leaked to the first stage's plate, then the second stage would need to develop 1/0. Look at the output on a scope. It doesn't look like he ever turned this into a Glassware kit, but the design looks sound and simulates well in LTSpice. You pay for it with 3dB worse signal to noise ratio, but you probably won't notice this in a line stage. Find and download user guides and product manuals Battery Chargers 12V Automatic 5400MA 2 Stage Battery Charger. Jan 13, 2017 · I built one with a new pas chassis. Aikido line-stage amplifiers; thus, one board is all that is needed for stereo unbalanced use or one board for one channel of balanced amplification. Also for: Intelli-charge ic7w, Intelli-charge ic10, Intelli-charge ic15. Dec 8, 2019 · In two words: darn good. Includes tubes, resistors, PS and heater bypass capacitors, two sets of coupling capacitors (PIO and film), printed circuit board, ceramic tube sockets, and board stand offs. F. Manuals. And I have finally built one, as shown above. Apr 13, 2024 · You can get some nice octal Aikido boards directly from a PC board fab company. Subscriber. If somehow you don't know what the Aikido circuit is, say Google dumped you here for the first time, the quick answer is that the Aikido tube circuit provides low distortion, low output impedance, and stellar PSRR (power supply rejection ratio)—all Page 7: Line Stage Amplifier Gain & Zo 24V Aikido Stereo Line-Stage/Headphone Amplifier PCB Line Stage Amplifier Gain & Zo The total gain of a 6GM8-based Aikido line amplifier will be close to +15dB, which should work handsomely in most systems. Haven't built with them yet. It’s a two chassis affair (see photos). While I had the tubes, the Aikido PCBs, the supporting parts, the design, and the desire, somehow I just never had the time. We have 1 Yuasa SmartShot Automatic 12V 1. The heaters are all placed in series and this heater string is powered by a portion of the the B+ power-supply voltage, the bottom portion. com, is an excellent way to start. Mr Boochie AK Subscriber. As long you put in the tubes, check H+ and H- to be at 12v. 5751s, on the other hand, provide a Jan 22, 2022 · Notice the dotted lines connecting the upper and lower sections of each stage. All Activity; My Activity Streams Oct 14, 2020 · I kept all the AC wiring I could under the chassis. After a lot of searching on the Aikido site, I found that John had addressed this. Est. Here's a snippet from manual MP-701 supports 12AU7, 6922, 6DJ8, E88CC, 12SN7 and 6SN7 preamp tubes. Where the typical tube-based line-stage amplifier requires a B+ of 200V to 400V, the Aikido 12Vac can get by with only a B+ voltage of 100Vdc with 6DJ8/6922/E88CC tubes; or 130Vdc with 12AU7/ECC82/ECC802 tubes. Thanks! Nov 26, 2015 · The CCDA look very promising, read this article, very interesting and it follow me to the Aikido line stage, so CCDA or Aikido line stage? i have 8*6n2pev, 3*12ax7, 1*12au7, so i don’t care to use 2 tube for channel if it improve the sound Q. Operating Instructions. I know how to solder, I have made all my RCA cables, and last week I put together a ¨color box¨ using 2 Western Electric 111C transformers in 150:600 configuration. INTELLI-CHARGE IC7 battery charger pdf manual download. The plan requires that the input triode's plate resistor split the B+ voltage (and by extension, the power-supply noise). reading time 15 minutes. A generous person here on DiyAudio posted the Gerber files some time ago. Mar 26, 2019 · Super sketchy badly soldered & asking for a short test run was successful! Signal is passing through it to the amps and I can hear music. After swapping out the active line stage for the passive one, I immediately Jun 11, 2014 · I built the 9-pin all-in-one, and I absolutely love it. If you don't skip any page in Mar 26, 2019 · I've built three cheapie Chinese "clone-type" line stage kits recently. Which leaves a selector switch Jul 11, 2005 · The dual function voltage divider. Jun 13, 2019 · I ordered the boards for the Aikido Noval (9-pin) line stage and complimentary PS-21 power supply, both of which come with components and instruction manual. for the Aikido Line Stage Kit Bottlehead Foreplay II and Paramours; DIYHIFISupply Ella; Hagerman Cornet2, Clarinet, and Piccolo; Cinemag switchable SUT; Audio Note Kits Amp One. Attention! Your ePaper is waiting for publication! By publishing your document, the content will be optimally indexed by Google via AI and sorted into the right category for over 500 million ePaper readers on YUMPU. However, most of his manuals are missing some parts and wrong values. 6 inches, and mounts identical to the original board. This is a fully balanced buffer board using high-quality audio op-amps in an instrumentation-amp configuration. The Gerber zip file is in post 20. Joined: Not being able to run 12V heater tubes is no problem for me Jul 29, 2024 · 300B seems entirely overkill for a preamp. Harri S. Also, it provides a 24 VDC output for the filaments; the remote control operates on 5VDC (stepping down from 12V with a regulator on the board) and the switcher also on 12V. 3V secondaries. The old octal stereo PCB held over 150µF of RC capacitance per channel. So you need a separate PS. tetra topology is diff from the aikido circuit: ATM i cant recall the tetra topology, but he does offer a similar topology in another non-aikido line stage. Oct 8, 2010 · I have three questions for those that may have built the Aikido line stage. 000 PDF user manuals from more than 10,000 brands. These are no longer available. Warning Oct 31, 2016 · Hi all, I'm putting together an Aikido line stage + the Glass-Ware PS1 HV/LV regulator kit. May 21, 2024 · I got Aikido Octal all in one which he discontinued. The transformer should be fine since the secondary winding is as you say. The boards are four inches by ten inches, with eight mounting holes, which help to prevent excessive PCB bending while inserting and pulling tubes from their sockets. Working very well with my Cary PP 300b amp. what configuration did u end up for your aikido line stage? Jan 27, 2008 · The new Aikido board offers two output stage: a line level output and a headphone driver output. Where the typical tube-based line-stage amplifier requires a B+ of 200V to 400V, the LV Aikido can get by with only 24Vdc with 6GM8/6N27P/ECC86 tubes; or 48Vdc with 12BH7 or ECC99. Need to double check voltages and then get to work mounting it in the case, fabricating the front panel, and building & wiring the Nixie Jun 13, 2019 · My understanding is that as the Aikido uses dual-triodes in a totem-pole arrangement the voltage on each plate in a single tube will be half B+, making the required B+ voltage 180V. Jan 3, 2017 · The N-F-P has gone to a new home. The PCB color is now red, but the real difference is found in three major changes: each channel's B+ RC filter is made up of pure polypropylene (no electrolytic) capacitance and each channel requires its own separate heater power supply and the output can be configured in Aikido push-pull to drive high-impedance Yuasa Manuals; Automobile Battery Charger; SmartShot Automatic 12V 1. Maybe post some pictures of the inside. First one I assembled blew a polarized axial capbut not my fault. If you join then in series, and use a bridge rectifier (4 diodes) then you will see 12. Jan 8, 2016 · Spin off of Tubes4hifi PAS 3 line (tube nirvana) It actually looks like a nice kit based on (New chassis, faceplate, Jacks, regulated supply, aikido line stage and what I'm assuming is a PH 10 phono stage all in one. May 21, 2024 · The Aikido manual does state on page 15 that ". Oct 31, 2023 · The Aikido preamp uses a half-mu amp, so it's gain is nicely predictable and you can plug-and-play different tube types if you want to try tube rolling. Page 10: Canopy Replacement Service Manual Carefree of Colorado IRAGE TAGE ANOPY EPLACEMENT Spring Arms 1. Jun 13, 2019 · My PS-21 was gift from a friend a while ago. broskie has also offered a tetra phono with or without the power supply. Member. Now that I have the AikidoI realize how much I needed to have more gain Plus the search for that magical driver stage for the 300B continuesand I would love to try the Aikido stage in that position Feb 24, 2011 · Hi, has anyone built both the Aikido Line Stage(could be All in One) and the A. This version used four 12AU7's for the line stage. So, was wondering if anyone has had the opportunity to use them in a line stage application as below? If so what are your opinions or thought about this Aikido line stage? This is a minor new revision of the old stereo noval PCB, bringing it to Rev. needed some help along the way Mar 26, 2019 · As long as you don't get big spikes you should be ok. the pcb was silkscreened incorrectly. I was a little sad to see it go, but Harri’s full purchase price went to the Georgian Bay General Hospital in Midland, Ontario, for the capital equipment renewal program. The upper and lower tubes are half sections of each glass envelope dual triode. This allowed us to get away with making an Aikido push-pull output stage, so that high-impedance headphones could be driven. Jun 1, 2019 · Custom Aikido 12AU7 Tube Line Stage with Dual Coupling options. My first build was a 300B amp from scratch. uk. I bought the two boards and power supply from then Tubes Nirvana. Page 3 LINE A MPX-205/SW PHONO PHONO LINE LINE B LAMP 4-CHANNEL 12V/5W PRO SOUND MIXER View and Download Projecta INTELLI-CHARGE IC7 manual online. Tubes work well with high voltages and can easily swing big voltages, so using a tube-based line stage makes a lot of sense, if you desire huge output swings. On the front there is only an input selector, volume control and rotory power switch. Every day we add the latest user manuals so that you will always find the product you are looking for. Than swap for a smaller size cap. May 21, 2024 · I was first planning to build a Elekit TU-8550 kit, but I read many reviews saying that the Aikido line stage, even the 12v one, sounded better than that particular Elekit. Now, 16Vpk into an 8-ohm load equals 16 watts of power. 6V as the input voltage. It turned out nice. Can be configured as a headphone amp too. I’ve read lots of glowing reviews about the aikido pre-amps, so I’m quite excited and have high hopes for the final outcome. Vs. co. 5 Amp 5 Stage manual available for free PDF download: Technical Manual All that is needed to finish the entire line stage is a chassis, power supply, volume and input selector controls, and a handful of RCA jacks and hookup wire. Jul 11, 2005 · Hi all again, I tested yesterday my Aikido on a different setup (not my hedlunds but a freind's one with Dalquist loudspeakers) and I must say that the pre is silent. It sounded very good and dead quiet. I built it on a chassis from a AES AE3 preamp using mostly the existing power supply. Putting all together is May 21, 2024 · The Aikido manual does state on page 15 that ". WARNING SYMBOLS AND DEFINITIONS. 5 Amp 5 Stage. He means the input stage (upper + lower sections) is one dual triode, and the outut stage (upper + lower sections) is another dual triode. dave Hi Dave- The RS part number I found is 273-1511B. Sounds pretty good. The line stage circuit is from one of Broskie's TubeCad blogs. . 4*6sn7 2*250v w ct 38v drop across r17 (1500ohm) and janus shunt. 2009-01-14 8:56 pm #194 Dec 18, 2008 · This schematic below is a simple two stage line-level preamplifier using a single 12AU7 (ECC82) tube per channel. So your question 'which Aikido Line Stage' is nonsensical in the context in which it is presented. Aug 4, 2005 · Aikado Power Supply Would anyone care to share their power supply designs for the Aikido Line Stage. The line stage is very quiet. Jun 13, 2019 · This new board combines the B+ tube rectifier and filter caps, DC filament supply, and a balanced differential line stage. 6 x 3. Mar 27, 2013 · Running 6 tubes drops the filament voltage down to around 10v per tube (instead of 12v) and the B+ will sag way down to around 330v. In other Passive Line Stage Vs Unbalancer I finally got around to wiring up my passive line stage that is based on two M1 mono stepped attenuators and one Select-1 switches and ten RCA jacks. This FR-4 PCB is extra thick, 0. Thank you for your purchase of the TCJ Aikido -pin stereo Rev. Also for: Intelli-charge ic25w, Intelli-charge ic25rv, Intelli-charge ic35, Intelli-charge ic50, Intelli-charge ic8-24. 1. It was a nightmare to get it the way I wanted. tulvm hin xrrkheey pkpd xlv abzh jyogpm cvb njuycg yhs