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In Reply to: RE: Yes posted by fantja on April 09, 2015 at 18:14:43
I enjoy tweaking Electronics as I am a R&D EE for more than 25 years in practice.
Regards
PS Yeo
Follow Ups:
Can you describe your mod(s) to the Marantz ?
As the Modifications were done 4 years back, IIRC :1. Improvements to the I/V converter's critical resistors & Caps. Improved power supply decoupling
2. Improved supply decoupling to the LPF section.
3. Upgraded the NFB network resistors of the O/P buffer section to Caddock MK132
4. Increased the audio section supplies from +/- 11V to +/- 12V.
5. Output coupling caps upgrades and additional bypass with 1uF 200V PPFX-S
6. Tweaked to the 5.6V Zener Voltage reference from the Main regulator (+/- 12V now)
7. Changed the Caps for main supplies de-coupling and added Solen MKP Caps.
8. Improved de-coupling to the 5V voltage reference at the negative input of the I/V converters.
9. Many other small tweaks that unable to recall now. Most of the audio section's original caps and resistors been changed (Both values and types).Regards
PS Yeo
Edits: 04/12/15 04/12/15
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