too bassy a sansui ,THE AU-607...
- Thread starter quadklipsh
- Start date
quadklipsh
Super Member
No i never disliked this sansui 607....i highly recommend it to friends now ....i love its sound ......its a great amp....
Fine tunning the bass is underway . Maybe some replaced parts are low quality or out of spec , as speculated above.
midrange and HF is faboulous at this price .
Fine tunning the bass is underway . Maybe some replaced parts are low quality or out of spec , as speculated above.
midrange and HF is faboulous at this price .
I have just looked at the schematic for the AU-607 it is nearly identical to the AU-517 - there seems to be a slightly more complex protection circuit in the power amp, no multivibrator circuit for the protection light, the tone control circuitry is the same as the AU-517, but other than that I can't see any difference which might explain the 'too bassy' complaint. 
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quadklipsh
Super Member
Hyperion ,
the tech has worked his way and found the problem somewhere between the speaker connector and the relays , the Pre amp and power amps are now clear of any component failure.....
i have recieved the amp today and will test it with sansui sp100i speakers .
the tech has worked his way and found the problem somewhere between the speaker connector and the relays , the Pre amp and power amps are now clear of any component failure.....
i have recieved the amp today and will test it with sansui sp100i speakers .
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smurfer77
Super Member
There should be a significant increase in bass with loudness on. You said there was not much difference. Was there definitely a difference? If there wasnt an obvious increase in bass with switch engaged it just needed cleaning as it was always 'on' no matter switch setting. Would explain your observations perfectly in terms of bloated bass etc.
quadklipsh
Super Member
bass did make a difference but not anything as much as the usual 20db in lows or highs. but a difference was there . so im saying that the loudness switch was working .
but now the amp has returned after the 2nd look . and still at my friends home where its still not connected . ahhh lousy dude .
but now the amp has returned after the 2nd look . and still at my friends home where its still not connected . ahhh lousy dude .
O au-d11mK2
Member
I have just looked at the schematic for the AU-607 it is nearly identical to the AU-517 - there seems to be a slightly more complex protection circuit in the power amp, no multivibrator circuit for the protection light, the tone control circuitry is the same as the AU-517, but other than that I can't see any difference which might explain the 'too bassy' complaint.
wrong amp, not alpha ... looking for alpha607Dr schematic, only found scematin of AU607/517
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restorer-john
Addicted Member
Get your 'tech' to run a frequency response plot on the amplifier at 1W and a few other spot powers up to full power and post the results here. You cannot determine anything without facts.
Why? - The thread title is 'AU-607', we are not mind readers.
O au-d11mK2
Member
Im sorry, wrong chice of words, have been looking for some schematics of the alpha607dr, but may have to order one. possibly IDK has ...Why? - The thread title is 'AU-607', we are not mind readers.
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