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I've just received a Sherwood 5500II back from my tech who replaced the volume pot with a "near" equivalent, as we could not find another original one. I am somewhat crestfallen after hearing the amp (really for the first time since buying it on ebay) on two counts for which I am hoping my esteemed fellow inmates might have some suggestions.1) The new Volume pot has a weird volume curve now so that the volume comes up very slow, then very fast at the 11 o'clock position. Anyone know where I might find an original or better replacement. Is it the same as on the 5500I ?
2) The sound, while full, has a little too much midrange and not enough air or refinement. I think it needs new caps and I'm wondering if anyone has experience with this model and suggestions as to what caps should be replaced and which would be a good choice. Is it overkill to use something like Mundorf caps?
Is it true that the disc shaped caps are generally ok to leave in as long as they function in spec? In restoring an Eico HF81 recently, it was important to leave those in as they were characteristic of the sound of that amp. And that piece sounds wonderful now!
Any help on this would be greatly appreciated! Many Thanks in advance.
Chris
Follow Ups:
" 1) The new Volume pot has a weird volume curve now so that the volume comes up very slow, then very fast at the 11 o'clock position. Anyone know where I might find an original or better replacement. Is it the same as on the 5500I?"I don't know where to find a pot for your amp. sorry to say. Pots for early integrateds and preamps are very scarce, you'll just have to keep looking I'm afraid. It sounds like the tech put a linear taper pot in place of the audio taper. It may have been the best he could do.
"2) The sound, while full, has a little too much midrange and not enough air or refinement. I think it needs new caps and I'm wondering if anyone has experience with this model and suggestions as to what caps should be replaced and which would be a good choice. Is it overkill to use something like Mundorf caps?"
If the coupling caps and power supply caps are original they're likely tired by now. There are better and much less expensive choices for cap replacements than Mundorf, especially if you want more energy at the frequency extremes.
Hey Jim,
Thanks for the input...could you recommend the specific caps you like?
Thanks
Chris
I like to mix the brands in vintage gear, I don't want it to sound like one particular cap. I use IC MPWs, 716P Sprague/Vishay, and Panasonic film/foil polypropylenes.
Thanks Jim,
My tech likes those Panasonic caps too and says they are a really good value w/ nice sound qualities.
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