HiToo bad you closed her up. With the age of this receiver, you should replace those cans also. As @Eastham indicated, you should hear an improvement in the lower frequencies once replaced. I have a bunch of extras that may be a match, if you want to change them out.
If the lows get any lower I think the wife will come downstairs and beat me!! I have it Hooked to a pair of NHT 2.9’s and it’s 35 wpc is really shaking the music room and it’s not a small room, I may revisit the transistors at a later date, really need to finish up the Kenwood KA-9100 that’s been on the bench way to long.
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