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In Reply to: First impression of Kenwood KW-55 receiver upgrade posted by Neff on April 13, 2008 at 19:20:55:
Today I replaced the the 12AX7s original cathode capacitors with new Panasonic FM types plus increased capacitance from 25uF to 47uF. The change in sonics was immediatly apparent without any capacitor break-in time. The sound was improved regarding more details and overall clarity. I believe other parts from the first go-thru have about 50 hours use.
If I was do try these modifications over again, I would likely choose the higher power Kenwood 1100 or simular series with the larger output transformers and 7591 tubes for superior bass response. However, this KW-55 is not shy on bass and the EL84/6BQ5/7189 are highly respected power output tubes.
I will report back after 300-400 hours capacitor break-in time for final impressions.
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Follow Ups
- 9th day impression of Kenwood KW-55 receiver upgrade - Neff 16:43:33 04/22/08 (0)
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