|Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
||Thread Tools||Search this Thread|
|28th December 2011, 03:01 AM||#1|
Join Date: Jul 2003
Location: Dayton, OH USA
Poly-props or electrolytic caps for Phono OpAmp PS bypass application?
I'm working on a new solid state phono stage design. It uses Op-Amps for gain and buffering stages. I'm pondering whether to use Poly-prop or electrolytic capacitors for power supply bypass, located very next to the active components. Thinking of doing RC filter with 10...30 oHm resistors in series to create low pass filter at each op-amp.
Electrolytic capacitors are about 1 to 2KuF value and "good" Nichicon audio type with low ESR.
Poly-prop's are about 5...20uF value, probably Solen or "Dayton Audio" brands.
Large electrolytic capacitors have much lower impedance but worst DF (dissipation factor). This I assume somewhat higher distortion and sound smear.
Poly-props have higher impedance (due to lower capacitance) but much better DF. So I assume better/clearer sound to them.
What I'm not sure about is what is more important for fast/clean sound: bypass capacitors DF or total capacitance hence better filtering.
I'd appreciate your comments. I'd like to hear how would you describe sound differences between lythics and poly-props in PS bypass application.
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Bypass caps in choke PS||john dozier||Tubes / Valves||7||11th September 2011 02:04 AM|
|.1 or .01 ps bypass caps||john dozier||Power Supplies||8||27th December 2010 11:19 AM|
|Do electrolytic caps need bypass?||Fixup||Solid State||1||9th August 2006 09:27 PM|
|best opamp bypass caps...||Htguy||Digital Source||1||7th February 2006 02:26 PM|
|opamp bypass caps with regulated PS||Russ White||Chip Amps||14||25th May 2005 03:36 PM|
|New To Site?||Need Help?|