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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: Hey Dan/Reb posted by bevo on March 17, 2010 at 09:43:42:
Yep, I think that the opa1612s are b/o as well, but I thought that they were a mid March availability. I'll have to check my invoices.
While you were digging in to things, did you replace the resistors in the phono stage? I recall an old Quad preamp mod was to replace them all with like-value 1% metal film from Holco, Vishay or other "high end" ones.
Did you also do a bypass of all of the 'lytics with HQ PP/PS/whatever caps?
re: board quality-no surprise here...I've opened up a few "high end" components and had one of those WTF moments in regards to build/material quality. I've (luckily) never had a trace lift, but it has to be exasperating.
At least the regulators look to be up front and easy to test/replace.
My suspicion is that the Belles will win in any case. As has been said many times before;"The best op-amp is none at all." By extension, the fewer, the better.
Remembering that the Quad equipment (at least the ones with which I'm familiar) were "voiced" to match/compliment the Quad speakers. By design (and intent) they seemed to showcase the lower midrange to mid/upper-treble range. Extreme highs and bass were less important. This is based on old knowledge with the ESL57/63 and Quad electronics through the model 77.
This might well have changed over time and with customer request/marketability....
Happy Hunting :-)
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- RE: Hey Dan/Reb - danvegso 12:55:44 03/17/10 (0)
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