![]() would this be due to the transformers? or other components? is there anything worth trying out to regain some of that bass? or am i up for output transformer replacement to get any results? three - there is quite a hum - is there anywhere worth looking to locate and cut it? any links to other articles would be great. ![]() does anyone know how to do this? or should i simply replace all the associated caps, and the pot, or try cleaning the pot? two - the bass is cut off pretty high, which i notice on the vienna acoustics pretty easy. one - how do i remove the tone control circuitry and create an flat tone across the internal preamp of the valve? as it stands, the tone control is very problematic - the left channel can only be used set to "high" tone and there is some noise - it goes silent if set to "low" and distorts greatly in between - it seems some caps there are buggered? i would love to remove the tone section completely if possible. ![]() this is the basic circuit as far as i can draw it (excuse me - this is not my usual hobby!)īasically i want to remove the tone circuit, find some more bass in there somewhere if at all possible, put in new capacitors if needed, and box it all up nicely so it doesn't pose a serious spark risk to my girlfriend if she uses it. i cleaned it a little, replaced a couple of caps, buggered around with the tone control circuits a little, cut out a few needless pre-amp circuits, made less of a mess of the power cabling (it was actually pretty dangerous), and now i need some help in getting further. and very noisy one channel, one channel completely dead. power cabling was insanely weird, pots replaced and missing knobs, most of the chassis missing. I bought in on ebay and it was a complete mess. so i want to get this little old beast working properly, learn some things, and then move onto building a 2A3 SE design from the ground up, with a touch more power (and a touch more everything else i hope.) ![]() but after cleaning it up and doing the best i can to restore it to working, then hooking it up to my vienna acoustics mozart speakers, i simply cannot go back to my copland CSA-8. using stereo 6GW8's and a 6CA4, it only has small output - in fact it is tiny. i am getting an old Peak ST-100 amplifier back to making proper sound. ![]()
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