Denon DCD-810 tweaking - diyAudio
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Old 6th June 2013, 07:14 PM   #1
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Default Denon DCD-810 tweaking


A college gave me a Denon DCD-810 which wasn't reading cd's anymore. After replacing the KS-152 head with a KS-220 head, I got it back working flawlessly.

I gave a look at the components inside, I found (after the CD dedicated circuitry) :
- a SM5807 fold oversampling filter
- a pair of PCM56P DAC (one of each channel... not the 1 DAC and analog demultiplexing on two channels scheme)
- 3 M5218P op-amps

I'm considering tweaking a little bit by changing the op-amp I suspect to be some kind of low range devices (datasheet of the M5218P is attached) : datasheet says "has virtually the same characteristics than 741 opamps".
Among the classics, I found the NE5534 which may fit (same package and pinout).

Does anybody had some experiences with those M5218P ? Which replacement could be suitable/interesting for those (other than the NE5534) ?

Thanks in advance,
Attached Files
File Type: pdf M5218P.pdf (358.1 KB, 26 views)
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Old 6th June 2013, 08:16 PM   #2
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If you change op amps to one with a wider bandwidth be careful you don't introduce HF oscillation.
Murton-Pike Systems PCBCAD51 pcb design software.
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