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amplifer

  1. S

    SONY TA-E77ESD Under Plate

    Hi, A couple days ago I recognized one strange thing on my E77ESD. The first picture coming from USA that the device has additional plate clearly visible (circled in green) other device is produced for Europe area and has not got that plate. So anybody who is from Europe area checked their...
  2. Yoast

    Marantz 2270 Crackle

    I have a hiss or crackle or static on both channels (but not at the same time) when using the marantz 2270. I switched the cables left and right channel and the static appeared on both channels. (not simultaneously) The amp was recapped and serviced just recently because of this but the...
    • Yoast
    • Thread
    • 2270 amplifer marantz marantz 2270
    • Replies: 13
    • Forum: Marantz Audio
  3. H

    Fosi Audio BT20a MAX User Experience and Presentation

    Fosi Audio BT20a MAX User Experience and Presentation I received a new package from Fosi audio. Thank you very much for trusting my neutral reviews and thank you for not expecting anything "only positive" from my review. I was given free rein to write an honest user review. Let's see what...
  4. musicman95

    Aragon 2002 ground issue, I think?

    I've got an Aragon 2002 downstream from an NAD 1700 and a schiit DAC, all RCA connections. Suddenly, with no prompting and with the preamp off, the speakers start making loud ungodly grounding sounds (like when you bump the tip of an interconnect with your finger). After I turned everything off...
    • musicman95
    • Thread
    • amplifer aragon issues
    • Replies: 0
    • Forum: DIY
  5. marini

    SA-708 amp + SG-9500 eq + SR-202 reverb. How to?

    Hello all, I have been trying to set up my system using an SA-708 amplifier, an SG-9500 equaliser and an SR-202 reverberation amplifier, to no avail. For simplicity’s sake, let’s say I have only one tape deck that I connected to Tape 1 on the amplifier, so this “chain” will be using the Tape 2...
    • marini
    • Thread
    • amplifer equaliser pioneer reverb sa-708 sg-9500 sr-202
    • Replies: 4
    • Forum: Pioneer Audio
  6. A

    Pioneer FX-330 volume/balance

    Hi! I found a Pioneer FX-330 (identical to SX-330? except radio bands?) in very good condition in a charity shop. It has a combined Volume / Balance knob, where it's "split" in two, and the inner part is balance while the outer part is volume. Problem with mine is they are completely stuck to...
    • asolako
    • Thread
    • 60s amplifer fx-330 pioneer solid state sx-330 vintage
    • Replies: 2
    • Forum: Solid State
  7. T

    Restomod Dynaco Stereo 120 — high DC offset

    I am rebuilding a Dynaco Stereo 120, with UpdateMyDynaco power supply and replacement caps, and the eBay TIP-mod amplifier boards, and I am seeing two issues that I could use some help with. 1) High DC offset (~200mV), and 2) the #4 and #14 eyelets are reading 71.3V instead of 36 and 37V...
    • TXGardener
    • Thread
    • amplifer dc offset dynaco dynaco 120 upgrade
    • Replies: 5
    • Forum: Solid State
  8. SX828POWER

    Kenwood KA 8004 Restored - But Sounds AWFUL! (with pics)

    Good evening Ak'ers, I have been doing quite a bunch of reading on this machine and I have finally decided its worth reaching out for some help with the issue I am having. I picked up an absolutely perfect condition Kenwood KA-8004 integrated amplifier last year for little more than the cost of...
  9. Dvanamps

    Sansui AU-777 Troubleshooting

    Hi folks, Im currently undergoing a full restore of a beloved Sansui AU-777 amplifier. Have already been following threads by @Leestereo and @KeithD among others to gain better understanding. So far, I have redone the power supply caps and all is sounding good, I can already notice an...
  10. Flamedemon

    Yamaha HTR-5930 Receiver Volume Knob Problem

    Hello! I recently acquired this amplifier and there is an issue with the volume knob. When I turn the volume up and down there is a loud clicking noise that only goes through the left channel. I tested it on speaker B and the same thing happens. The right channel is fine on A and B. Its as if DC...
  11. R

    Sony TA-D705 Receiver not loud enough (Preamp gone?)

    So I have this Receiver from the 90s its called Sony TA-D705 the problem is that the receiver when connected to my Speakers is not loud enough. I have to turn up the volume dial to the max, to barely hear something. When I put a CD in my Player and press CD Direct on my Amplifier it plays loud...
  12. AudioFlix

    AudioFlix AF-70

    Hi, greetings from Italy. I would like to show you guys my project, still WIP but almost done. It's an amplifier based on the P3A project from Elliot Sound Products with some modifications. Custom made PCB. It got Bluetooth (Qualcomm QCC5125) with aptX Adaptive and LDAC, USB (Amanero384 +...
  13. Oscarshock

    Decision between CA azur 851w and Parasound A23+ for low volume

    I plan to replace my current amp (Denon pma 600ne) with one of the two amps in the title because I no longer need all the functions that the Denon provides, e.g. DAC, BT, preamp etc, and I am looking for a pure power amp. I only need the amp to drive a bookshelf speaker, namely, Elac dbr 62 and...
    • Oscarshock
    • Thread
    • amplifer cambridge audio parasound solid state solid state amplifier
    • Replies: 4
    • Forum: Solid State
  14. woodie63

    Building my system Amp/Tuner advice please

    Hi all, longtime vinyl hoarder here finally hoping to build a decent setup to take me back to my youth! I have just picked up a pretty mint Thorens TD 150 mkII which for sentimental reasons is going to be the TT (My Dad's TT when I discovered music in the 70s) Now looking to get a decent vintage...
  15. M-Hassel

    Harman Kardon P725 | M770 Technical manual

    Good afternoon, I have a question regarding harman kardon models 725 and 770 for 100v. In the technical manual I could find, there are two versions only for 120v and for multi-voltage. Question, is there a technical manual for the 100v version of the P725 (HK725) and for the M770 (HK770)? If...
    • M-Hassel
    • Thread
    • amp amplifer harman kardon harman kardon 725 harman kardon 770 hk725 hk770 amplifier pre amp preamplifer techical manual
    • Replies: 0
    • Forum: Solid State
  16. maskof

    Sony TA-11 feedback?

    Has anyone tried this Sony TA-11 amplifier? How does it sound? Is it worth buying? Specifications Power output: 25 watts per channel into 8Ω (stereo) Frequency response: 15Hz to 30kHz Total harmonic distortion: 0.2% Damping factor: 25 Input sensitivity: 1.4mV (mic), 2.6mV (MM), 250mV (line)...
  17. maskof

    Onkyo A-8450?

    Hello friends, I would like to hear your feedback regarding the Onkyo A8450 amplifier. Is it a good choice for peak performance, or should I consider alternative options?
  18. Ray122

    Help with Marantz 2325 Amp Rebuild

    Hey everyone. Been grappling with the amplifier section of amplifier section of Marantz Model 2325. When I received it, the left channel amplifier was keeping the unit in protection mode. When I disconnected that section and just ran it with the right channel amp, the unit comes out of...
    • Ray122
    • Thread
    • 2325 amplifer amplifier repair diy help marantz marantz repair marantz2325 repair solidstate
    • Replies: 5
    • Forum: Marantz Audio
  19. Ray122

    Help with Marantz 2325 Amp Rebuild

    Hey everyone. Been grappling with the amplifier section of amplifier section of Marantz Model 2325. When I received it, the left channel amplifier was keeping the unit in protection mode. When I disconnected that section and just ran it with the right channel amp, the unit comes out of...
    • Ray122
    • Thread
    • 2325 amplifer amplifier repair diy help marantz marantz repair marantz2325 repair solidstate
    • Replies: 4
    • Forum: DIY
  20. S

    Vintage solid state repair, Winston 560

    Hello all, I recently picked up a low wattage (speaker is rated for 2 watts) amp on the verb, and it has a few issues. I think it needs a cap job, because after a few minutes of playing on higher volumes (so far higher volumes only) it starts humming and ring modulating. At low volumes it works...
  21. A

    Yamaha CR-620 or 420 works as an amp, right?

    I have a Yamaha YPD6 that run through a shitty rolls vp29 preamp, and want to upgrade. I was looking at this Yamaha CA 410/610 that a local record shop has at 410:150$ and 610:175$. Saw a forum online that had someone who bought both a CA 410 and a CR610 and people in the comments said the 410...
  22. F

    Seton TUS 600 low output

    I have a seton tus600 tuner that has a very low output on the “output” jacks. 1, would it hurt anything to just use the record out to feed the amplifier and 2 are there any simple things that may be causing this. I have some test equipment and basic knowledge of circuits. But any help from you...
  23. Tala Mink

    ground loop hum in diy amp

    I had a Pioneer SX-770 that had way too many issues to be worth repairing (only the amp, power supply, and phono were somewhat functional) so I pulled the parts and made a power amp from them. After getting it functioning there was a noticeable hum in the speakers that sounded like a ground...
    • Tala Mink
    • Thread
    • amplifer pioneer sx 770
    • Replies: 9
    • Forum: DIY
  24. H

    Switches- best lubricant - home made.

    Push pull switches. When servicing can anyone advise on best lubricant for these switches in vintage amps. Ideally, a homemade recipe as I just need to disassemble and regrease one switch. Can petroleum jelly be used? Thanks in advance.
    • Hifibythekg
    • Thread
    • amplifer grease lubrication switch yamaha yamaha a-1
    • Replies: 5
    • Forum: Solid State
  25. chchyong89

    Greetings from Malaysia!

    Hello everyone! Thank you for letting me in. I would like to showcase my latest mini 6.5W SET amp that I am loving it very much:jump: I am still learning and figuring how to improve it bit by bit everyday. :beerchug: .
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