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quad 303

  1. J

    Quad 303 repair

    I'm finally restoring my inherited Quad 303! I'm following this guide: https://www.rs-online.com/designspark/refurbishing-a-classic-quad-303-amplifier I've replaced all the capacitors and everything went good ;) Now to the problem: Adjust RV100 for 33.5 volts between tags 5 and 9 One of...
    • jr2joao
    • Thread
    • quad quad 303 repair
    • Replies: 0
    • Forum: DIY
  2. N

    Seeking skilled engineer to service Quad 33 and 303 in SF Bay Area.

    Greetings... Our Quad 33 control unit/preamp and 303 power amp require servicing. I would love to get leads to experienced, skilled and trusted service engineers to recondition them. We are in the San Francisco Bay Area. Know anyone or company you know and trust in this area? I look forward to...
  3. N

    Quad 33 and 303 looking for a service engineer in SF Bay Area. Seeking recommendations.

    Greetings... Our Quad 33 control unit/preamp and 303 power amp require servicing. I would love to get leads to experienced, skilled and trusted service engineers to recondition them. We are in the San Francisco Bay Area. Know anyone or company you know and trust in this area? I look forward to...
  4. DaveFloyd40

    Computer Noise

    Hi all, First of all allow me to apologize if I am posting this in the wrong forum but it does relate to watching films, etc. through my Hi Fi. Granted I am using an old system, a Quad 303/33 setup with Beovox 5700 speakers. It all sounds great, especially when playing a CD/DVD but as soon...
  5. W

    LF 12" Woofers: Sonics W-1224 OR Seas 30WK Alnico x 2

    Hi Anyone know anything about these drivers? I think the Sonics W-1224 is from an AS-330 speaker & I'm told the Seas 30WK are from some B&W and Revox studio monitors. Sonics = 50W 8 Ohms Seas = 30W 4 Ohms each I'm trying to find specifications for them e.g. res freq, q-factor etc, anyone know...
    • willbart
    • Thread
    • parallel operation quad 303 seas 30wk sonics w-1224
    • Replies: 0
    • Forum: Speakers
  6. DaveFloyd40

    Quad 303 Left Channel Output Issue

    Hi there, I've just reinstated my old Quad 303 after a few weeks of replacing components, etc. This comes after years of no use. It is coupled up with the 33 pre-amp and now sounds incredible! The only issue I seem to be facing now is a noticeable difference in volume between the left and...
    • DaveFloyd40
    • Thread
    • british hifi output problem quad 303 quad 33 volume imbalance
    • Replies: 13
    • Forum: British Audio
  7. T

    How to repair a quad 303 power amp and 33 pre amp

    So I got both of these for really cheap but they don't work the 303 doesn't do anything and the 33 powers on but doesn't do anything after that I tried the 33 disc and tape modules in another 33 and they work fine. Any tips on finding out what's wrong and repairing them?
  8. Jeremy64

    Testing rack

    With the addition of a Niles DPS-1 I can now test system against system on the same song and same speakers. Here’s Quad 33/303 vs McIntosh C28/SAE 2500. Input: Amazon Echo via tube buffer with NOS RCA tubes Output: Millersound Ohm F’s
    • Jeremy64
    • Thread
    • mcintosh c28 mcintosh mq101 millersound niles dps-1 ohm f-series quad 303 quad 33 sae 2500
    • Replies: 8
    • Forum: Members' Systems
  9. mygoggie

    Quad 303 power transformer lamination varnish

    Hi, maybe one of you have an answer to this. I am currently restoring a 1969 Quad 303 which was severely abused and then abandoned. The question has now arisen whether the main transformer's laminations were varnished before assembly or was the whole unit assembled and then varnished? The...
  10. D

    Quad 303 transformer

    Hi! I'm building a quad 303 clone and just purchased a NOS original transformer, I think I got the wiring right but wanted to be sure before firing it up. Does this seem right to you guys ? Thanks in advance.
    • depaj
    • Thread
    • quad 303 transformer wiring diagram
    • Replies: 0
    • Forum: Solid State
  11. vaathi

    How much for Quad 33/303 combo

    Hello fellow audio lovers... How much a combo Quad 33/303 is worth. 33 needs some work but supposedly has new facelift.. I am quoted 400 for both. You help appreciated.
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