I tweaked my 222c, and now it sounds even better. The tweaks were simple and reversible. First, I replaced my old 7189a power tubes with matched new tubes. I couldn't find a matched quartet, but I had a number of tubes on hand so I was able to get matched pairs on each channel. Next, I followed my tech's advice who measured the power supply sagging on demanding passages, and added two extra capacitors to the stiffen power supply. (If I didn't like the result, he offered to remove them free.) No alterations were made in the signal path. The result? Background instruments and vocals are now much more defined and distinct. The striking you-are-there quality on lead vocals and instruments now extends to the background as well. The sometimes wooly bass that I took to be a feature of living with a low-powered tube amp has tightened up considerably. My conclusions? It is definitely worth springing for good matched power tubes. If you have a good tech and your amp sounds good but suffers in the bass, consider whether the diagnosis might be a power supply inadequacy. This is the second amp I have owned for which adding capacitance to the power supply made a noticeable improvement. Personally, I still would not make any changes in the signal path unless absolutely necessary. Any other experiences out there with these kinds of tweaks?
Favorite H H Scott Tube Integrated Amplifier
I just purchased an H H Scott 222c integrated amplifier on these very pages. Wow, it is hard to believe that this thing was built in the early 1960's. Using it to drive Rogers LS 3/5a's, the palpability and realism on vocals and lead instruments can be startling at times. It totally blew away some highly regarded solid state gear I was using previously.
H H Scott made other integrated amps with different features, transformers, output tubes and power ratings. I am interested in hearing about other people's experiences with this and other models. I think that this gear is very under-rated, and can stand up favorably to many more expensive modern efforts. Do others agree?
H H Scott made other integrated amps with different features, transformers, output tubes and power ratings. I am interested in hearing about other people's experiences with this and other models. I think that this gear is very under-rated, and can stand up favorably to many more expensive modern efforts. Do others agree?
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- 50 posts total
- 50 posts total