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power amp

  1. D

    Capacitor diameter to small for socket

    Hi, I ordered caps for recapping my Sansui AU555a and based my order on a list here: https://audiokarma.org/forums/index.php?threads/au-555a-recap-list.622667/ Now, the caps for the power amp do not fit the sockets/fittings (see photo), the ordered elco's are slightly smaller. As these caps...
  2. MarmotDavid

    What to drive new Magnepan 3.7i's

    I've got a new pair of Magnepan 3.7i's. Currently I'm using my older, unrestored Counterpoint SA-1000 tube/hybrid preamp and and old solid-state Conrad Johnson Sonograph SA-250 power amp. The setup sounds pretty good but I'm sure it could be improved with some newer preamp and power amp, so...
  3. N

    Looking for amp to power JBL B460

    I recently acquired the monstrous JBL B460 18" passive subwoofer. This thing is the size of a small refrigerator and can take up to 800W. I do have the accompanying BX63A active crossover. I'm looking for recommendations on what to power this beast with. New or vintage is fine. Budget about $1k...
  4. H

    Yamaha P2200 hum

    My P2200 was recapped by me and has been performing beautifully but has just developed a hum. Diagnostics listed below. Please can anyone suggest the most likely cause and likely location? All input sources disconnected, the hum is present. Hum can be made louder or even disappear, by rotating...
    • Hifibythekg
    • Thread
    • hum p2200 power amp yamaha
    • Replies: 38
    • Forum: Yamaha
  5. H

    Help!! Old stereo equipment value/appraisal

    Hi Everyone! Please bear with me as I have no audio experience at all. My uncle died recently and left me a ton of old electronics. I am looking for help in trying to figure out what these pieces are worth. If anyone has any idea I would greatly appreciate any insight you can give me! I have...
    • Holly Degraw
    • Thread
    • altec dbc marantz old stereo equipment pioneer power amp proton reeltoreel speakers teac
    • Replies: 16
    • Forum: Dollars and Sense
  6. Racingh11

    Soundcraftsmen input board

    I designed an input board for the Soundcraftsmen PCR800, PM840/860, and similar amps. It will also work on the A5002 or most amps in general with the correct power source. It uses the built in +/- 15V supply in the PCR style amps. It provides a buffer for the input to the amp and will accept...
    • Racingh11
    • Thread
    • bridge bridgeable input board low pass pcr800 pm840 pm860 power amp pro power soundcraftsmen
    • Replies: 32
    • Forum: Solid State
  7. A

    upgrade amp for Sopra 2's

    I just acquired a pair of Focal Sopra 2's. Awesome speakers. I'm currently using a new Rotel 1590MKII preamp and an Anthem MCA power amp. I'm looking for advice on upgrading the amp. Since I just got the preamp, I really don't want to replace it. I've been looking at the mac 312 and Parasound...
  8. VintageDutch

    Might have found a STK Module source

    Hi, Today I went to a local electronic parts shop where I buy lots of "run of the mill transistor and other brand new "e-waist" :) The owner had a bit of spare time And he told he might have a nice stack of ORIGINAL **N.O.S** STK Power AMP modules Might be coming up for sale. There are some...
  9. Gr8DLight

    Powering Fisher XP-55B

    I recently acquired a single Fisher XP-55B, I would like to hook up some music to it and get it to play. I know I probably will have to get an amp of some kind, but I was unsure as to what kind. Anything helps.
  10. joestcyr

    T03 Power op amp wiring awg?

    I need to R&R some wiring in a au20k. original shinagawa. don't see any awg anywhere. obviously its heavy, but how so? 10,12,14? anyone who could shine some light, i greatly appreciate it.
  11. MickP

    Harman Kardon Citation 16A

    Hi all hoping for some advice. I am currently working through my citation 16A power amp recap and refurbishment. I need to replace both Dual NPN differential pair transistors on the driver boards marked as Q1. They are marked with a part number SD3119724 might be Motorola. Can’t find an...
    • MickP
    • Thread
    • citation 16a harman kardon power amp
    • Replies: 5
    • Forum: Solid State
  12. BilboBaggins

    Yamaha M40 back in the house!

    When I got back into audio about 10 years ago, my first power amp was a Yamaha M40. I picked it up in Toronto on one of my visits there. I used it along with a Sony TA-2000F preamp, and it was really nice. Lots of power to drive the Infinity's, Camber, Kef, and Celestion Ditton speakers I was...
  13. H

    Yamaha P2200 replace capacitors

    For the two boards containing the original large-ish bright orange caps.. Can anyone tell me which capacitor type and brand sit most happily in this amp?
  14. A

    Does anyone recognize this odd sound?

    I recently plugged in a vintage power amp and preamp. I got close to the right speaker I can hear the noise that you'll hear in the video that I posted the link to. It's a very quiet distortion/hiss sound. After swapping through cables switching speakers around, I figure that the culprit must be...
  15. H

    Yamaha Amplifier

    I want a great Yamaha power amp to run my main system. My speakers are biggish Celestion Ditton 66 floorstanders which apparently like high current, probably in order to grip the 12” bass drivers. My question is: In which descending order of sound quality would people recommend the various...
    • Hifibythekg
    • Thread
    • amplifier power amp yamaha
    • Replies: 90
    • Forum: Yamaha
  16. J

    Thoughts? McIntosh C26/Denon POA1500/Kef Q350

    Hi y’all! I just got a McIntosh C26 and a Denon POA 1500 serviced and will be pairing them to a set of new Kef Q350’s. I haven’t used all three together yet and would love to see what you guys think about that setup. Would you expect them to mesh well and perform strongly? I listen to a ton of...
  17. J

    McIntosh C26, Denon POA 1500, Kef Q350

    Hi y’all! I just got a McIntosh C26 and a Denon POA 1500 serviced and will be pairing them to a set of new Kef Q350’s. I haven’t used all three together yet and would love to see what you guys think about that setup. Would you expect them to mesh well and perform strongly? I listen to a ton...
    • jgduck
    • Thread
    • denon kef mcinstosh new set-up power amp solid state amplifier vintage
    • Replies: 0
    • Forum: Solid State
  18. A

    Power Amp with Pre Amp...Speaker Selector Knob Bypassed?

    I have a NAD 7020 and a pair of JBL 110's that I thought could use more power so tied in a NAD C270 power amp (to the speaker A terminals on the C270). I used the 'variable in' on the C270 as there is an input level adjustment knob on the back and I wanted a little more play in my 7020 volume...
  19. C

    SAE A501/Pre amp connection

    I just recently just came into a mint SAE A501 and mint Cerwin Vega PR-1 preamp. These power my Polk Audio model 10, series II's. They really came to life, sounds amazing. This is what i should have been running the whole time. The amp to pre amp connection is RCA's. Currently, i am using cheap...
  20. Richs_Trains

    Bose 1801 power amp restore/recap

    Hello all, I post mostly in the Marantz forum as I have recapped about 20 Marantz units, but an old friend who seems to have more equipment than he can deal with has offered to give me a Bose 1801 power amp (250 watts per channel and 26 TO3 outputs!) that is in working condition. I have no...
  21. D

    NIKKO NR-719 Power Amp Distortion

    Hello all, First post! Schematic here: https://www.hifiengine.com/manual_library/nikko/nr-719.shtml I have a Nikko NR-719 that passes signal through both channels, but the left side is distorted when pushed, especially with lots of bass. I don't have a scope but characteristically, it...
  22. John Parkey

    KEF 102 Reference Kube question

    Greetings everyone. I am the original owner of KEF 102 Reference speakers and Kube. My question is whether it would be OK, without any loss in fidelity or sound quality, to hook the Kube between the pre amp and power amp? I am not sure of the max voltages out/in of a Tape loop vs a Pre...
  23. mozcho

    Tube Sound: Pre-Amp or Power Amp

    In my quest to look for a pre-amp for my MC2205, a new question popped up in my mind: Which is more important in producing the tube sound? The pre-amp, or the power amp? The 2205 is currently fed by the pre-amp section of Marantz 1060, just because I have a Rega Planer 3 TT, or else I'd just...
    • mozcho
    • Thread
    • marantz 1060 mc2205 power amp pre-amp sansui au-70 tube sound
    • Replies: 31
    • Forum: McIntosh Audio
  24. U

    Pioneer m90 Protection/power indicator

    Hey im new here first time. Living in the netherlands First of all very happy with my pioneer m90 with sonus faber consertos but to my issue here first of all i when i notice the protection/power protection power indicator wont lid this is my method of connection connected to Line direct ->...
    • Unseenlegend
    • Thread
    • issue pioneer pioneer m-90 power amp power indicator protection protection/power indicator
    • Replies: 5
    • Forum: Solid State
  25. rickl

    Kenwood KM-209 Impressions

    In my quest in finding affordable high power Kenwoods, I’ve been curious on the late 80s KM/KC rack series. I picked up a $20 KC-209 and updated it with the Basic C1 updates. You can read about it here. I was looking for a matching power amp. I’ve read most of the posts of the KM-10X (125...
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