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Old 27th April 2012, 05:03 PM   #18131
lymmlad is offline lymmlad  England
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Just ordered a Digital multimeter and a desoldering iron from CPC... onwards and upwards... commitment has been made... the fight commences... here's to the high end... now, where's that CD63?

Putting my drink down for a minute... and here's the reality check... after all these modifications will the player actually sound BETTER or just DIFFERENT?

Incidentally, irrespective of any responses I am likely to receive, I am still up for this mods malarkey since one of my objectives is to learn how CDPs work.
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Old 27th April 2012, 09:58 PM   #18132
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Just ordered a Digital multimeter and a desoldering iron from CPC... onwards and upwards... commitment has been made... the fight commences... here's to the high end... now, where's that CD63?

Putting my drink down for a minute... and here's the reality check... after all these modifications will the player actually sound BETTER or just DIFFERENT?

Incidentally, irrespective of any responses I am likely to receive, I am still up for this mods malarkey since one of my objectives is to learn how CDPs work.
Honest oppinon much better further you go more you will acheive learn aswell bonus .
cheers alan
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Old 30th April 2012, 09:59 PM   #18133
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Just finished recapping my 63 rubycon zlgs and oscons fitted a pair of cnc rca s do i need a resistor in series to the output?
thanks alan
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Old 2nd May 2012, 09:19 PM   #18134
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I think it depends on your op-amps, cables, etc. My player works fine without, using LM4562HA and 0.5m solid core interconnects.
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Old 2nd May 2012, 09:29 PM   #18135
UV101 is offline UV101  England
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I think the resistors should set the output impedance??? but as Ben says you may not need them. Try without, if you loose something due to an impedance mismatch, put them back in ;-)
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Old 2nd May 2012, 09:46 PM   #18136
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Looking @ putting some regs on the servo ic s 3x7908s and 3x7808s the pos needs low dropout am i right . Saw an earlier post saying its well worth the effort.
cheers alan
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Old 2nd May 2012, 09:57 PM   #18137
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Ben do you have a design for an lm317 5v reg that works ive tried a few and all failures.
cheers alan . ps what part of the west mids did u come from ?.
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Old 2nd May 2012, 10:03 PM   #18138
UV101 is offline UV101  England
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Brents had issues with 8v regs but I've never had a problem and I've done 3 with +/-8v 79/7808 off the std power supply ;-)

If you are likely to build a big VA servo PSU then run +/-12v
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Old 2nd May 2012, 10:17 PM   #18139
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Brents had issues with 8v regs but I've never had a problem and I've done 3 with +/-8v 79/7808 off the std power supply ;-)

If you are likely to build a big VA servo PSU then run +/-12v
Thx ian,
good gains to be had i think you tried may posts earlier gave a glowing report so thats good enough for me .
alan
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Old 2nd May 2012, 11:31 PM   #18140
hotiron is offline hotiron  Scotland
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Ben do you have a design for an lm317 5v reg that works ive tried a few and all failures.
cheers alan . ps what part of the west mids did u come from ?.
Try this one Alan It rocks replace Lm329 with lm336 though.
http://www.lcaudio.com/images/Accessories/dcreg.gif
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