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sansui au-7900

  1. Subchannel

    SANSUI AU-7900 PROTECTION PROBLEMS

    I have restored and recapped a Sansui AU-7900 which I bought with a problem. After a few minutes the amp clicks and sound is shut off. the power indicator stays on. Turning it off, wait a few seconds, and turning it on again helps, and it stays on. The old C701 (15000uF 63V) measured 0.2uF so...
  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. Strand

    70's Sansui and Pioneer speaker selection for 9' x 9' music room

    I need some seat-knowledge experts to assist me on selecting 2 sets of speakers to upgrade my speakers. My music room (stereo room) is 9' x 9' and so it is tight... so? The image uploaded shows my core systems of (2) Sansui and (1) Pioneer Amps. Both my Dual 1229's have failed now and I will be...
    • Strand
    • Thread
    • pioneer sansui speakers pioner sa-8500 pioner sa-9500 sansui au-7900 sansui au-9900 small room speaker
    • Replies: 5
    • Forum: Speakers
  4. Kreshna

    What are your "unexpectedly good" loudspeaker-amplifier combos?

    I read good things about Class D chip amps like Tripath and TPA, so I eventually decided to buy a 2 x 100 WPC TPA 3116D2 in 2018. Unfortunately the amp has loose heatsink (it's very cheap anyway), which hasn't been re-glued until recently. Indeed, the amp is very cheap. In any case, the...
    • Kreshna
    • Thread
    • bowers & wilkins dm302 chip amps class d amplifiers jbl l20t kreshna aryaguna nurzaman sansui au-7900 tpa3116 unexpectedly good sound
    • Replies: 108
    • Forum: General Audio Discussion
  5. B

    Sansui document library

    Hi, all: I'm new here-first post! I first met Sansui the day in 1970, when my dad brought home a brand new Sansui Eight receiver. I have that receiver, fully restored at QRXRestore. It sounds absoluetly magnificent! So much so, that I want to recap/restore my own AU-7900 amp. But I have found...
  6. Kreshna

    Does Sansui AU-7900 drive difficult load speakers better than higher specced amplifiers?

    Okay, this is about my B&W DM302, whose impedance drops to 3 ohms from 200 to 300 Hz, and to 5 ohms between 10 to 20 kHz. When driven by 25 wpc Sansui A-40 (not the best of Sansui, apparently), the resulting sound is strained and shouty. Very fatiguing. B&W DM302's impedance curve, compared...
    • Kreshna
    • Thread
    • b&w dm302 kreshna aryaguna nurzaman rotel rb-985 sansui a-40 sansui au-7900 yamaha rx-v663
    • Replies: 10
    • Forum: General Audio Discussion
  7. Kreshna

    Still hesitant to use modern amplifiers, recommendations are welcome.

    I'm not saying vintage amplifiers always sound better than modern ones, I'm not saying Sansui AU-7900 is representative of the sound of all vintage amps either. Just like modern amps, there are good sounding vintage amps and there are bad sounding vintage amps. It's just so happens that the...
    • Kreshna
    • Thread
    • audio analogue pucinni kenwood dc20p kreshna aryaguna nurzaman modern amplifiers rotel rb-985 sansui au-7900 vintage amplifiers yamaha rx-v663
    • Replies: 15
    • Forum: Solid State
  8. Grid

    Speaker Causing Advent 300 Receiver to Blow Fuse???

    I connected a single speaker rated at 36W max to one channel of an Advent 300 receiver. As soon as the volume was up to 11 O'Clock, clipping started and the receiver blew a fuse. I replaced the fuse and hooked the Advent 300 to Advent speakers (OLA) and there were no problems even up to 1...
    • Grid
    • Thread
    • advent 300 receiver fuse blow sansui au-7900 speaker watts
    • Replies: 19
    • Forum: Solid State
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