How much headroom do you have with this amp? Said another way, do you ever turn the volume up past half way (i.e. could you get away with a 2x20W setup since the speakers are 4ohm?). There is a nice adafruit breakout board [1] $20 for stereo at 20W but I can’t vouch for it directly. At least that way you can have the advantage of a more open circuit with possibility to replace or fix things that break.
-Andy [1] http://www.adafruit.com/products/1752 On May 25, 2015, at 10:12 AM, Ward Cunningham <[email protected]<mailto:[email protected]>> wrote: Friends -- Along with some remodeling we've retired a nifty little (in its day) panasonic receiver/tape-deck/cd-player which was the centerpiece of our modest home audio/video setup. Now with all inputs going through tivo/apple-tv we replace the receiver with an inexpensive amplifier (pictured) and have been enjoying the extra shelf space this change made available. <41SFsyTUhhL.jpg> That is, enjoying until now. The Amazon reviews warned that this unit had reliability problems which I can confirm. After a few weeks of service driving the panasonic bookshelf speakers (4 ohm, nothing special) the amplifier developed an unusual oscillation: Burrrrraaaap, burrrrraaaap, at maybe 2 Hz. I found I could squelch this by turning down the base. I didn't miss the base, I'm over that phase of my life. But now, another week has gone by and it has started to hum. It is a nice clean 60 Hz hum so I assume it is some related or not weakness in the built-in AC supply. No control twiddling or power cycling helps and it is too small to kick. I wonder if anyone on this list has a suggestion as to how to repair or replace this equipment? I should note that I have at present invested sums equivalent to my monday night bar tab. I'd spend more but not much more because after say $50 all the money goes to unwanted features in bigger (and still empty) boxes. If I can't find something good soon I might just have to recover my Dynaco Stereo-70 (a David Hafler design) from cold storage in the basement. This would not make Karen happy. http://en.wikipedia.org/wiki/Dynaco#Products Best regards -- Ward _______________________________________________ dorkbotpdx-blabber mailing list [email protected]<mailto:[email protected]> http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber -- Andrew M.C. Dawes Associate Professor of Physics Pacific University amcdawes.com<http://amcdawes.com>
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