last updated: Friday, 02-Apr-2004 23:22:54 EST
- audio home
- The Vifa X3
- Preamp
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- Shiva!
- PA Speakers
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- Phase Linear
- LM3886 amp
- lm12 amp
Pictures Modifications Misc
- Picture 1 My DH220, front view. The image is so bad you can't see the scratches on the front, and the power button is hard to make out. Someday I'll post better pics, I promise.
- Picture 2 The guts of my DH220, from the back. Showing the (then incomplete) RCA conversion and the bridging switch (barely visible on the left heatsink between the FETs).
- Picture 3 The guts of my DH220 from the front. Nothing special here, I ahvent' even upgraded the power switch. Eventually, the gaping space on the left will be home to low voltage regulators, a la POOGE.
- Picture 4 Extreme closeup! OK, not quite, but it's up close and personal with the bridging switch. Up is mono, down is stereo. Min impedence in mono mode is about 6 ohms nominal. It can dip to 4, but not for very long...things get too hot too fast.
Pictures Modifications Misc
I've put some cheap RCA jacks on it (RatShack specials). They're infinitely better then the aluminium POS jacks that came from the factory.
I used a pair of nylon shoulder bushings (1/4" or so ID, 5/16" OD on the barrel, 7/16" flange OD.
I cut the barrel off a little less then 1mm from the flange. Basically, you're going to make a washer with a bit of a lip on it. Then , just install the new RCAs with the nylon washer on the outside of the case (between the jack and the case) and use a 1/4"ID brass washer between the inside of the case and everything else (solder lug, lockwasher, locknut, in that order).
No more cleaning the RCA jacks every week now :-)
I plan to add some bigger caps to the beast. Right now the factory 10KuF caps that came with it measure a whopping 6200uF. Well, after almost 20 years what do you expect?
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Pictures Modifications Misc
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