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Old 16th March 2012, 02:00 AM   #1
Djinn is offline Djinn  Norway
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Default Marantz 3300 phono

I am resurrecting an Marantz 3300 preamp, and I have replaced all the power capacitors with good quality Rifa Peg 124, Epcos Sicorel 125 and SIC-Safco Proreisic. All these were axial, but for the electrolytics in the signal path i used radial Elna silmic and Nichicon Muse caps. The sound is great in all the line inputs but the Phono input has a sound as if there is a curtain in front of the speakers. Is there a way to improve the sound in the phono board?

With kind regards

Last edited by Djinn; 9th November 2012 at 09:18 PM.
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Old 16th March 2012, 06:57 PM   #2
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Sounds like it just has the typical Marantz sound. It is possible that you would have to redesign the entire amplifier in order to get that off.
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Old 16th March 2012, 11:52 PM   #3
Djinn is offline Djinn  Norway
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So Marantz in this preamp made the phono input so diffrently sounding than the line input.:-(. I was hoping that a change of some caps or/and resistors would improve the sound some. Is there anyone that had an experience in tweaking the phono/riaa card in this preamp with out redesigning the whole phono/riaa input card?

With kind regards

Martin
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Old 17th March 2012, 07:03 AM   #4
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make sure that semis there are working properly ...even though music might come form them that also doesn't mean that the transistor is working 100% correct

strip down the circuit and see what parts might limit bandwidth and transparency often in commercial amps rule of """ better safe than sorry "" applies

kind regards
sakis
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