I don't see the variable element schematically anymore in those possible mods. Cout is C4.
I made a mess to you and myself. Sorry about such chaos. It will be more smart to replace Alps with step attenuators and that it is.
I’ll get rid of carbon potentiometers and I’ll be able to play with the max power with no distortion.
So, it is output cap. I do not what to change it since my FSP is sounds amazing. Should have to install Mills MRA-5 for R13 (1.2K) and additional PRP 8.2R at the end of this week. Now I use some temporary installed resistors (8.2R made of 2 parallel 22R and one 33). Also found 4 Vishay Z Foil 4.7k resistors. Going to test RCruz's advice for 2200 Ohm load (4.7K parallel with 47K main shoulkd give me 2.24K load).
About subwoofer, I do not know what to do “today”. Need some brain storm and deep test of my B&W ASW825.
I’ll get rid of carbon potentiometers and I’ll be able to play with the max power with no distortion.
So, it is output cap. I do not what to change it since my FSP is sounds amazing. Should have to install Mills MRA-5 for R13 (1.2K) and additional PRP 8.2R at the end of this week. Now I use some temporary installed resistors (8.2R made of 2 parallel 22R and one 33). Also found 4 Vishay Z Foil 4.7k resistors. Going to test RCruz's advice for 2200 Ohm load (4.7K parallel with 47K main shoulkd give me 2.24K load).
About subwoofer, I do not know what to do “today”. Need some brain storm and deep test of my B&W ASW825.
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That what exactly I meant: all parallel 2x4.7k and one main 47k.
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The only other setting I've tried was 47K at the beginning. 1K is more fluent and better stage defining as far as I can remember. But I shouldn't speculate. I wonder if loading changes could be be measured, observed and compared not just by ear only.
There could be ringing vs electrical load damping changes. I don't think there are test records with repetitive transient signals devised for such purposes. Maybe I am mistaken, never researched it well. There won't be evident frequency response differences on pink noise tracks.
Did you try higher with the Benz LP, RC? I am currently using 2200 ohms with my LP (the original LP, not the 'LP-S') but will try 2300, as soon as I get those resistors.
Did you try, say, 3300 or 4700 ohms?
And have you tried 'C' loading MCs? I read an article which suggested that - despite commonly-accepted belief that MCs are impervious to 'C' loading - as high as 1uF was appropriate for some. 🙂
Regards,
Andy
Word autofill Android keyboards will bring me up as Salad. Some times they greet me as such here because of not noticing when posting from touch screen devices.😀
I had a very good time with the LP and experimented from 100 to 5000ohms... in some systems I did like 2300 and others I prefered 2200.
Please bear in mind the type of resistor used is determinant.
With Shinkoh I prefered 2300, with Vishay bulk metal I found a better result with 2200.
Hagerman does not agree but ofc that is theory vs practise Hagerman Technology LLC: Cartridge Loading
Maybe you miss a desoldering pump also given the rework you had to go through enough times on double sided boards of HV PSUS etc. 😉
Saves time, frustration, and pads of valuable PCBs. In fact its probable that many members here miss one as well.
https://www.youtube.com/watch?v=hmNJ8pdA1AQ
(Not as efficient, powerful, or clean working as a desoldering station, but much cheaper, portable, takes no space on the bench, needs drastically lower maintenance).
Slimmer sized and better looking 2015 black version I had seen on very few Aliexpress stores recently. "30w desoldering pump black" should bring them up on Ali's search.
An externally hosted image should be here but it was not working when we last tested it.
(Found in 220V 50HZ version only)
It's the same like ebay: New 30W 220V Vacuum Solder Sucker/Desoldering Pump/Iron Gun/Removal Tool SP430 | eBay?