Simplistic NJFET RIAA

Increasing in value yes. I had decreasing the HF response in mind.

loading the DL-110 with 1k2 gave better result than adding 300pF in the RIAA in my system. Guess mainly due to the cart.

I will try another Rload value from 1 to 8k (as seen here)

By the way, is it relevant to burn the capacitor with circuit like sample wav (pink, white noise) from a cd to a cap tight to ground with some R in parallel.
Just to gain time for the cartridge lifetime ?
 
I am not sure if very low loss plastic caps ever "burn". Electrolytics surely shape up after storage though. But you can use an L pad 100 times attenuator made from two resistors (1k series 10R to ground) and feed the phono any kind line level signal through it for any purpose.
 
2V is max RMS red book. I.e. 0dbFS. Measure your line output RMS first with true RMS DMM (selector on AC) for the program material and volume level you intend to use. Its usually much lower than 2V RMS. Then its easy to decide the L pad ratio for say 1mV RMS downscaling.
 
One channel is as expected, TP1 - TP2 measured 4.4 and a turn on VR2x took it to 3.8 and another small tweak after a couple of minutes took it to 3.6v.

The other channel though the led's in d1 to d4 have gone out, any ideas why? Both channels were adjusted to 35v using VR2x and left to warm up.
 
So some Led there was weak and went out. Maybe the soldering tortured it. 3mm Leds are kinda sensitive. Go there with the DMM in diode mode and measure one by one. No need to remove them for finding which one conducts and which one doesn't. Find the culprit(s) and replace them. If they are good maybe Q7 is out. Its their current feeder.
 
15,937 posts and finally some color. :rofl:
I finally was able to box them up. Separates are the way to go, I'd like to see the transformer at least 12" away.
Don't ask about the wooden panel.
 

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