Trouble installing Fetishizator into Rotel rcd-971 (pcm63)

Chilli6565 · 24th May 2010, 10:01 AM

Hi,
I have just installed the Fetishizator into my Rotel rcd-971 and although it is working and sounds great, the gain is too low.The dac chips are the Burr Brown pcm 63..pins 5 and 6 are shorted. I believe the Fetishizator was optimized for the tda1541 dac?..I hope the picture of the circuit comes through so to make it easier to comment.

Thanks
chill

Chilli6565 · 25th May 2010, 08:04 PM

...anybody?...gurus welcome

Extreme_Boky · 26th May 2010, 11:29 AM

That circuit does not have enough gain for those Iout DAC's you mentioned. Nothing you can do about it, apart from increasing the Iout resistor value and/or increasing the fetishizator gain, but both solutions will give high distortion / cripple frequency response. If you are happy with sound, consider using “interstage” gain - like the pre-amp, between CD player and amplifier.

Boky

25th May 2010, 08:04 PM	#2
Chilli6565 diyAudio Member Join Date: Apr 2008 Location: Newcastle, Australia.	pretty please ...anybody?...gurus welcome __________________ " I love cats....but I couldn't eat a full one. "

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26th May 2010, 11:29 AM	#3
Extreme_Boky diyAudio Member Join Date: Dec 2003 Location: Sydney	That circuit does not have enough gain for those Iout DAC's you mentioned. Nothing you can do about it, apart from increasing the Iout resistor value and/or increasing the fetishizator gain, but both solutions will give high distortion / cripple frequency response. If you are happy with sound, consider using “interstage” gain - like the pre-amp, between CD player and amplifier. Boky

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