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amp

  1. A

    Harman Kardon PM655 . Strange value of voltage

    Hi, After the schematics (power supply zone) ; instead to have +35.6v for Q5 2SD669 and -35.6 v for Q6 2SB649 i have 42v and -42v ! For the rectifiers bridges i have 44.8v and -44.8v for both... Also the heatsink of q5 and q6 are very hot... Is there someone who spot it too ? Just for...
  2. lopezluna

    Need help identifying the value of this resistor please.

    Hello fellow AK'ers. I need help with this resistor value please. My eyes cant distinguish the color on one of the bands therefore I cant order the resistor. Any help would be greatly appreciated. I do have a picture of how to look up resistor values but I the problem is my eyes wont cooperate...
  3. O

    Newcomb KX-30 value?

    I can't find too much information on the thing. I had a Newcomb H25 that was modified and I've seen that a lot, but can't find anything on this model. I didn't know if this has a value because I've never seen one sell or what it could be best utilized for if anything. It turns on and worked okay...
  4. SmetMarc

    Onkyo M508 or M5090

    I'm looking in buying one of these big VU amps. I found both of them but not sure which would be the best choice. Can anyone give me some recommendations so I can make the right choice?
  5. J

    Club Kasino Amplifier - Minor Repairs and Quick Tour

    This is a quick repair of a club Kasino Amp head. Its only has a minor issue, but I've never seen inside one so I've decided to make a video to document it, as well as the repair. Also a bit of Deoxit applied while the AMP was opened. I found it interesting That an Amp from 1973 would use IC's...
    • JRUBIN
    • Thread
    • amp club kasino fairchild repair
    • Replies: 0
    • Forum: Solid State
  6. ssouci

    X-202: How to Maximize Sound Quality?

    I have a Fisher X-202 integrated amp wondering what other owners are are doing to squeeze the most out of their amps in terms of SOUND QUALITY, and to a lesser degree, reliability what things have you done that provided the greatest and most worthwhile improvements in sound quality, in terms...
    • ssouci
    • Thread
    • amp amplifier executive fisher tube x-202 x202
    • Replies: 12
    • Forum: Fisher
  7. U

    What size is the internal fuses of the Sumo Polaris Amp?

    I'm speaking of the (4) internal fuses NOT the "slo-blo" power fuse. I'm think they are 4 amp standard fuses, but I'm not certain. Any help would be greatly appreciated.
  8. Zack Sainz

    Vintage AVR And Vintage Speakers

    Hey Fam! I have a crazy late night idea for a small room. Currently I have a Sonos set up, I’m thinking about replacing the Sonos with some older tech such as a Denon AVR-2807 My idea, older AVR with pass through to go into my stereo amp, left and right channels that way I can listen to a...
  9. cnolanh

    Ds2000 is a fine seller

    I bought an amp from him which was packed carefully and arrived in great shape. His description of the condition was accurate and clear, and communication and payment were easy. All in all an excellent transaction and I wouldn't hesitate to deal with him again. Many thanks to an excellent...
    • cnolanh
    • Thread
    • amp ds2000 feedback packing positive shipping
    • Replies: 1
    • Forum: Feedback
  10. Zack Sainz

    New or Vintage Amp for KLH 5

    Hello all! I am looking to create a happy couple with my KLH 5s. I enjoy relaxed listening, my space is small, so I don’t need tons of power. Right now I’m using my Scott 299B and it’s great! The Scott is for my KLH 6s, I had a Marantz Model 22 that was powering my 5s, which is now out of...
  11. JeffNTaxes

    Need help - headphone amp + phones decision/setup

    I'm running the system in my sig down there, Superphon Dual Basic > Superphon amp w/Systemdek TT mainly. I want to use the tape outs of the pre to a headphone amp so I can defeat the speaks and listen while the wife watches Dr. Pimple Popper in peace. I believe the hookup scenario is sound...
  12. G

    Amp/Receiver Question

    Hey everybody! I’m considering upgrading from my Marantz 2220b to something with a little power. I’ve actually got my eye on a Sansui 5000x. I’m currently running a pair of AR 2ax on the Marantz. I don’t really need it for higher volume as I rarely crank my Marantz passes 11 o’clock on the...
  13. I

    Adcom GFA-585

    I've been a longtime lurker, but I've finally got some questions. I picked up an Adcom GFA-585, that is in good physical condition. I tested the voltage across the speaker terminals during start up, and warm up, and had it stabilize well under the 30mV suggested by EBC Electronics. I have no...
    • Immersion
    • Thread
    • adcom adcom gfa-585 adcom gfp-565 amp amplifier pre-amp stereo
    • Replies: 19
    • Forum: Solid State
  14. Rafael Vaz

    Sennheiser 660s amp and dac advice

    Hi there, So i ordered Sennheiser 660s with Apogee Groove Amp/Dac bundle to use on my PC. I also just got a turntable, the Rega Planar P1+ which has a integrated phono pre-amp. So my problem here is that I just realized that I won't be able to use the Apogee Groove with the Rega P1+ since the...
    • Rafael Vaz
    • Thread
    • amp apogee groove dac headphones rega planar p1 schiit magni schiit modi sennheiser 660s turntable
    • Replies: 2
    • Forum: General Audio Discussion
  15. Jeff Howard

    Amp Selector switch

    Hello All, I have two amps that I'd like to run to 1 set of (2) speakers and be able to switch between the two amps. As I use them for different purposes: Music vs. Movies/Sports. Is there a switch made for this? I was thinking of using a 4 pole changeover switch or something like that. Let me...
  16. Perro1965

    Class D integrated amp Choices

    Hello everyone, I’m looking for a second hand integrated amp and I have narrowed the options to: - NAD D7050, first generation (no phono option) - Peachtree audio Decco 65, also the first generation I live in Mexico and the reason for narrowing to these two options is because of what’s...
  17. forceof1

    Second Amp For My Sub ?

    Hey everyone! I upgraded from a Rotel amp to a Marantz 250. Now I have an extra amp. I would like the Rotel to power the sub. Here's the eqpt layout....... M250, Rotel RB 980X, 120 wpc. .03% dist. Nikko Beta 50 Preamp, has 2 outputs, 2 processor in/out and tape. Sub is nothing special Sound...
  18. RSMRecording

    Need Help Identifying Unknown Power Amp

    Hello, This is my first post in this particular section on AK, I have been member since 2015. I have an old power amp kit or homemade unit and I don't have any information regarding its origin. I searched in google for an 1 hour today trying to find a kit manual or vintage AD. I thought...
  19. C

    Yamaha receiver

    Hi everyone. I'm picking up a Yamaha RX-V870 for $12 CAD. Does anyone have any input on this device? I'm primarily going to be using it for music. Records in particular. Hooking up a Pioneer PL-255 turntable directly to it through the phono input. As well as 2 Technics 1200 turntables...
  20. Sajia

    Getting Serious About Hearing My Music

    Hi, I love listing to music. For the past 20 years or so I've been moving from one apartment to another and listening to music by plugging a pair of speakers into my PC. I understand that FLAC and ALAC files could give better audio quality than the usual formats, but with my setup I don't think...
    • Sajia
    • Thread
    • amp dac flac laptop newbie speaker advice
    • Replies: 26
    • Forum: Introductions
  21. NH-MAN

    Do you lose fidelity when an amp is hot?

    From my knowledge in a basic way electricity and components like the cooler side. Now I do not mean abnormally hot just normal hot for what ever is being used. I am wondering if I turn my amp up to 8 (1-10) does it sound better "initially" than when everything inside gets hot 20 min or so...
  22. P

    Restoring and Cleaning Amplifier Internals

    I've come across a Pioneer SA-510 that was kept in the garage as an amplifier. It started "acting weird" so it was given to me. I respect the vintage tech, and want to bring this thing back to life for normal use in a cared for environment. It's got 2 problems. It is oxidized inside. Rusted on...
    • pkalder
    • Thread
    • alcohol amp amplifier board circuit boards cleaning oxidation pcb restore vintage
    • Replies: 33
    • Forum: DIY
  23. V

    help with Kenwood KA-72B Amp

    I just acquired a Kenwood KA-72B and for the life of me, can't find an owners manual...plenty of service manuals available. This probably sounds stupid, but I have never seen speaker terminals like these. Also, I have a Yamaha pre-amp I'd like to run with this...need help hooking this thing up.
  24. imral3

    New chifi?

    Got a couple class D mono amps to test out... Listening without subs right now and not too shabby, to these ears anyway. :dunno:
  25. techkiller80

    Unboxing the vintage Akai system with pics.

    So i'm taking some pictures as we speak, my one question is if i want to open up the receiver and clean out the dust i've read i can simply spray it down with simple green cleaning solution is this correct? I have Q-Tips ready with Simple Green and an alternative of 91% Alcohol from the pharmacy
    • techkiller80
    • Thread
    • akai amp cleaning new in box old receiver turntable vintage
    • Replies: 19
    • Forum: Turntables
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