Revox B225 Clock speed - diyAudio
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Old 19th October 2004, 01:55 PM   #1
lancer is offline lancer  Singapore
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Default Revox B225 Clock speed

Does anyone know what is the clock speed of my CD player? I am thinking upgrading it with a XO kit. Any help is greatly appreciated. Thanks all.
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Old 19th October 2004, 10:05 PM   #2
PMik is offline PMik  United States
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B225 http://www.revox.net/info/b225.html

is based on Philips SAA7210/SAA7220/TDA1541A

XClock = 11.2896 MHz

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Old 20th October 2004, 07:39 PM   #3
Lourens is offline Lourens  Europe
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Default tda1540 not 1541

The B225 is not based on TDA1541 but on the 14 bits TDA1540. If this implies another clock frequency? I don't know. Maybe this will help:
http://www.thevintageknob.org/1STCD/B225/B225.html
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Old 20th October 2004, 09:06 PM   #4
PMik is offline PMik  United States
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Strange!
i have a service manual for B225 and it claims what i have informed
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Old 20th October 2004, 10:52 PM   #5
guido is offline guido  Netherlands
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hi,

with such nice modular build i can imagine a mk2 version.
1983 is a bit early for 1541 i think. Isnt cd304 and cd304mk2 not also the difference between 1540/1541?

anyway, open it and have a look inside.

It's normally either:
- SAA7210/SAA7220/TDA1541 with 11MHz on the 7220 or
- SAA7000/7010/7020/7030/2*TDA1540 with
4.2336MHz on the 7000

If it helps to replace this 4MHz clock with something better, i don't know. God knows how much jitter the logic in the 7000 or 7030 produces
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