Albertporter. This is the second time you offered your expert opinion on my problems. I appreciate very much. I removed the resistors from the SP8 and I checked the loading on the headamp, guess what? It has already been changed to 150 ohm, I guess by the previous owner. So, everything back to normal. Thanks again.
Need help on changing loading on phono
I am using ARC SP8 (built-in MM phono) and also a tube headamp for my low output cartridge. I have just changed the loading from the standard 47K ohm to 150 ohm on the SP8 to get less forward sound. After the change, I noticed the the volume would go from minimum to a certain level and then remain at the same no matter how high I turn the volume knob. I then tried it with just the SP8 MM phono without the headamp, it works. But, when I used it with the headamp, it didn't work. This obviuosly works if I only use the SP8 MM phono and not together with the headamp for the extra gain. Is there any thing I could so it would work with the headamp? Or, should I have changed the loading on the headamp instead of the SP8? Many thanks in advance.