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amplifier

  1. JB8

    SONY STR-7035 - Dead Right Channel

    After cleaning pots and pushbuttons thoroughly (and multiple times), I'm still not getting any sound from the right channel via headphones or speaker outs. Cleaning the volume/balance pot increased the output of the good channel significantly, but the right channel is still dead. Right channel...
    • JB8
    • Thread
    • amplifier dead channel sony str-7035
    • Replies: 9
    • Forum: Solid State
  2. K

    Barn find Sansui AU-7900

    Hey guys, this is my first post and I'm not really all that great at rebuilding amps yet. I was wondering if anyone could help me with my problem. I have no real history of the amp other than it was in a barn with its top and bottom off, and had a mouse nest that had mouse chewed wires in...
  3. teddyfreddy

    Update on my Calbest amplifier project

    I ordered some components off of Tubedepot, two capacitors are on backorder as of right now but I have most of what II need. I also found 2 NOS 5AR4 Toshiba tubes on Ebay.
  4. Zether

    A couple of Technics SU-V8

    Hi all, I have been listening music so far using a Naim NAIT 5i with Dali Oberon 7 speakers, but found this combination to be lacking in the low end so went on a quest to find a "new" amplifier which would hopefully be able to drive the speakers better. Due to the environment I have been raised...
    • Zether
    • Thread
    • amplifier restoration su-v8 technics
    • Replies: 36
    • Forum: Solid State
  5. F

    Sony TA-AX22 repair

    Hi, I'm quite the beginner in DIY repairs, so I'd like some help troubleshooting. I have an old Sony TA-AX22 amplifier. The speakers don't work (no voltage at all on the outlets, but the resistance of the speakers themselves seems fine). The STK 2129chip might be at fault from what my...
    • Felixpotato
    • Thread
    • amplifier repair sony ta-ax22
    • Replies: 7
    • Forum: DIY
  6. polhem

    Upgrade from NAD 3020i

    I have used a NAD 3020i as my amp the latest 10 years. I have not found any amp that can match its details and treble. Though, since trying a NAD 319 dedicated power amp in my system I realise that the 3020i lacks definition and power in the lower frequencies. I wonder if anyone has a...
    • polhem
    • Thread
    • amplifier nad nad 3020 nad 3020i power amplifier upgrade
    • Replies: 10
    • Forum: Solid State
  7. M

    Splitting Signals from Sources

    Hi, I am hoping I can get some advice from people with much more HiFi experience than me. I have a Wyred 4 Sound STIv2 500 amp with which I am very satisfied.Unfortunately, the amp doesn't have an integrated headphone jack. I currently have line inputs from a CD player, TT preamp, and streamer...
  8. Jxmos

    Fisher 660-A Stand Alone IBAM or EFB, ETC.

    I'm working through the mods on a Fisher 660-A stand alone amplifier and have a couple questions for the experts. I've found a number of posts on this amp and lots of helpful information but I've not found examples of Dave Gillespie's Enhanced Fixed Bias (EFB) Regulator installed into a 660-A...
    • Jxmos
    • Thread
    • 660 680 amplifier console efb fisher ibam standalone
    • Replies: 12
    • Forum: Fisher
  9. KNielsen

    Aragon 4004 converted to MK.ll and maybe other mods

    Hey AK. I want to share this project as this might inspire others to either restore or make the fully rebuild. It should be mentioned that the Aragon 4004 in this thread is built by request, soo..... -some parts cannot be selected otherwise, as this is a request by the customer. The most...
    • KNielsen
    • Thread
    • 4004 4004mk.ii 4004mk.ll amplifier aragon aragon 4004 aragon 4004mk.ll mod modification restoration
    • Replies: 77
    • Forum: DIY
  10. B

    Onkyo A 9030 only outputting half the stereo signal

    Hi there! First time poster - I've been trying to fix this problem elsewhere but have been coming up blank so I was hoping someone here might be able to help. I'm not an expert in this so apologies for any woolly wording. I'm having an issue with my A 9030 amplifier / pre amp. Basically...
  11. N

    SANSUI STILL GOOD

    is sansui audio sound equipment still good nowadays please let me know
  12. ajmich

    NAD 2140 drops right channel under moderate load

    Moderately loud volume, fed from an Audioquest Dragonfly Red off my iMac Pro... my old NAD 2140 amp cuts out on the right channel after a couple minutes. Happens with or without the soft clipping engaged. Output is very good, clean, not overly loud. Via ELAC Debut 6.0 DB62 speakers, rated 6...
    • ajmich
    • Thread
    • amplifier nad troubleshooting vintage
    • Replies: 12
    • Forum: Solid State
  13. P

    AudioSource Amp Two speaker jack bank?

    First post, apologies if this is in the wrong forum, but it seems right. I just inherited an AudioSource Amp Two that has been lightly abused, namely that the speaker jacks (A & B, L/R) are functional, but in sad shape. Trying to find a replacement part, and a forum regular that I recent met...
    • PJantzen
    • Thread
    • amplifier audiosource speaker connectors
    • Replies: 0
    • Forum: Solid State
  14. A

    A&E technical research DCA400 amplifier need help to restore it.

    Hi everyone, it is my first post and hopefully it is in the right section of the forum. I have since long time, this amplifier, A&E technical research DCA 400, that recently give up on one channel, 5 output transistors. I took off the top plate to check it, after some smoke came up from the...
    • Alessioave
    • Thread
    • a&e amplifier fixing repairing transistors.
    • Replies: 5
    • Forum: Solid State
  15. S

    Sony TA-F730ES opinions and tips

    Hi guys! I'm new on this forum but I have always read your discussions as an unregistered user. I'm Antonio, from Italy, 22yrs old and I wanted to ask you some information about the Sony TA-F730ES amplifier, which I wanted to give myself for my bachelor's degree :-) I paid € 390 for it...
    • Sofad319
    • Thread
    • amplifier es series esprit f730 sony ta730
    • Replies: 13
    • Forum: Solid State
  16. Kpangolo

    Using TAPE OUT for active speakers

    Hello, I would love to be able to have a third set of speakers attached to my Marantz 2220. Does anybody know what is the voltage coming out of the TAPE OUT RCA port on those? I have connected active speakers to it and it works well, now I would like to attach a very long (maybe 100ft) RCA...
    • Kpangolo
    • Thread
    • active speakers amplifier
    • Replies: 26
    • Forum: Speakers
  17. C

    Help w/ M Audio speakers + phono out from receiver

    Hi, For about 8 years now I've used the M Audio AV-40s as my main computer speakers, as well as for light studio work (I do it all on the same computer). I also have a receiver-amplifier hooked to a tape deck and a turntable, that has a phono out. I have a converter from the 1/4" out on that to...
    • cma2032
    • Thread
    • amplifier blown cd player hum m audio monitors receiver speakers tape deck turntable
    • Replies: 5
    • Forum: Speakers
  18. ikonw8

    Pushbutton switches for 1180DC

    All, Looking for a modern replacement for the the ALPS slide switches in an 1180DC (also used on the 1152 and 1300, probably others too). Marantz part numbers SP04010210 and SP04040170 (15Hz and tone defeat switches). There are not the same design as the F4UEE switches. Thank you!
    • ikonw8
    • Thread
    • amplifier marantz replacement switch
    • Replies: 2
    • Forum: Marantz Audio
  19. C

    Celestion 44 owners? (Or 33s, 66s) probably others, too

    Morning all, just joined AK this morning. Within the last week, I’ve picked up a mint (or as close to as possible) pair of 44s which have been re-wired with Van Damme cable and re-capped. Previously owned the 15XRs and also have a pair of Castle Severn 2s. question is about amplification and...
    • CoolDTed
    • Thread
    • amplifier celestion 44 quad sansui
    • Replies: 2
    • Forum: Speakers
  20. KNielsen

    Amplifier build

    Hey AK I'm starting this thread to share this build, and hopefully get some feedback while doing so. It's gonna be an expensive build, so slow process is suspected :) The chassis that'll suit the 8pnp/npn will be from Modushop; 5U/400mm There are some adjustments to the old schematic I'm posting...
    • KNielsen
    • Thread
    • amplifier diy diyamplifier diypoweramp diypoweramplifier poweramp poweramplifier schematic
    • Replies: 30
    • Forum: DIY
  21. jpreza

    Recommendations on digital amplifier replacement for HK430 receiver

    Good morning everyone, After a couple of months tinkering with a HK430 that has a blown Left Channel output, I'm thinking that perhaps the best route would be to replace the existing amp board with a class D digital amplifier and be done with it. Has anyone tried such a project? I'd be curious...
  22. G

    Kenwood KA-7100 -- less volume in right channel

    Hi all, So I have a Kenwood KA-7100 amp. I bought it fairly recently from a guy who swore that all the cleaning, etc, had been done. Just the other day I realized that the volume is starting to go (it's a bit less and perhaps slightly distorted) on the right channel. I am a total non-techie...
    • gurdyp
    • Thread
    • amplifier channel ka-7100 kenwood volume
    • Replies: 4
    • Forum: Solid State
  23. david winter

    Luxman L-31 power switch replacement model

    Hi, Is there a model of power switch which fits the Luxman L-31 ? As I don't have the amp with me right now, I can't even try to see what can directly replace it. Thanks !
  24. J

    Ayuda para reparar mi amplificador Sony Ta-f3a

    hola a todos, tengo un amplificador antiguo marca Sony modelo TA-F3A, el problema es que no funciona, resistencias quemadas fusibles quemados y transistores no los he comprobado todavía, según he leído estos amplificadores tienen problemas con 2 diodos en concretos pero no se cuales son sus...
  25. J

    Rega Planar 2 /NAD 3020A - quiet output on one channel

    Hi I am new to AK and would like to thank you in advance for any help you can give me! As a teenager I loved my hifi but after I got married and space was limited it got put in a box in the loft...where it has stayed for the last 30 years... until last weekend when I connected my TT (Rega...
    • John1968
    • Thread
    • amplifier fault finding phono quiet output turntable vintage amplifier
    • Replies: 12
    • Forum: Turntables
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