Search found 3 matches

by Lav750
Mon Apr 25, 2022 3:25 pm
Forum: CD
Topic: Op Amp Mismatch
Replies: 4
Views: 6344

Re: Op Amp Mismatch

Hi Jack. Thanks for that. As an update I tried them (797's and 49710's) in the CD304 and they were OK, then tried them in the CD1 and got no sound what so ever! Was wetting myself for a moment just in case I had damaged it! Luckily not as all was well when I put the OP27's back. As the DAC's and oth...
by Lav750
Tue Apr 12, 2022 10:06 am
Forum: CD
Topic: Op Amp Mismatch
Replies: 4
Views: 6344

Re: Op Amp Mismatch

Hi Nick. Thanks for the information. I will check on the Philips CD-304 first, then go on from there. Hopefully even though the parts are of different max voltage specs the actual PCB's will be outputting less. The NE5534 which I assume it had as standard is +- 15V I think. All said and done, the CD...
by Lav750
Tue Apr 12, 2022 12:24 am
Forum: CD
Topic: Op Amp Mismatch
Replies: 4
Views: 6344

Op Amp Mismatch

Hi to all. First post is a question. I have a small collection of TDA1541 equipped CD players including Cambridge Audio CD3, CD2, and yes a two box CD1. I have changed Op Amps, caps, clocks and PSU parts on the CD2 and CD3 to great effect after reading online about it's suitability. The CD1 presentl...