I found about 20 able tech smps in a box in my mom attic was wondering if I could get some recommendations on what to build with them
FH9HVX would be high on the list. Proven implementation, (assuming it's the same SMPS).
https://www.diyaudio.com/community/...onscious-100w-class-ab-for-lean-times.353512/
Historical thread:
https://www.diyaudio.com/community/threads/abletec-53v-dual-rail-450w-supply-for-20.281698/
https://www.diyaudio.com/community/...onscious-100w-class-ab-for-lean-times.353512/
Historical thread:
https://www.diyaudio.com/community/threads/abletec-53v-dual-rail-450w-supply-for-20.281698/
It is have tons of them too and I need lots of channels lol was looking for something easy plug and play don't have time these days to find parts and solder it all up. Was looking at ljm boards would probably be good enough.
I found a bunch of these in my own basement, too, just recently. I had bought them to power IRS2092 amps originally, and would also like to find a modern amp to pair them with, so I am also interested in this topic.
The best RTR amp that I have found that will pair nicely with one of these is the Hypex UCD400HG HxR, which requires dual rail power supplies like the AbleTec. The amp module costs about $115 USD each and is still widely available. With a rail voltage of 53V you can only get about 300W out of it into 4R max. Given the crest factor in music signals you could run a pair of the UCD400HG HxR off of one AbleTec PS and make a nice stereo amp.
https://www.diyclassd.com/product/ucd400hg-with-hxr/9
https://www.audiophonics.fr/en/ampl...-mono-power-amplifier-module-400w-p-3084.html
https://kjfaudio.com/product/hypex-ucd400-amplifier-module/
The only thing I would caution you against is that the heatsink bar on the PS does not seem to be insulated from some of the devices. I once got a pretty good shock when I touched it while powered up and running. So I would not bolt it to a chassis heatsink without double checking for this issue first, or use an isolated internal heat sink for it.
The best RTR amp that I have found that will pair nicely with one of these is the Hypex UCD400HG HxR, which requires dual rail power supplies like the AbleTec. The amp module costs about $115 USD each and is still widely available. With a rail voltage of 53V you can only get about 300W out of it into 4R max. Given the crest factor in music signals you could run a pair of the UCD400HG HxR off of one AbleTec PS and make a nice stereo amp.
https://www.diyclassd.com/product/ucd400hg-with-hxr/9
https://www.audiophonics.fr/en/ampl...-mono-power-amplifier-module-400w-p-3084.html
https://kjfaudio.com/product/hypex-ucd400-amplifier-module/
The only thing I would caution you against is that the heatsink bar on the PS does not seem to be insulated from some of the devices. I once got a pretty good shock when I touched it while powered up and running. So I would not bolt it to a chassis heatsink without double checking for this issue first, or use an isolated internal heat sink for it.
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A class AB amp that works well on +/- 53V rails for 8 Ohms is the LJM L12-2, which will deliver over 100W into 8 Ohms at that rail voltage. It's a proven design that is relatively inexpensive and you can purchase them already mounted on a heatsink from Ebay or AliExpress. Using 53V for 4R loads will produce too much heat but there is a mod for the AbleTec amps that involves adding one resistor to the underside of the board to reduce the rail voltages to, e.g. +/- 48V. This would be better for use with 4 Ohm loads that would get you about 150W into 4R.
The L12-2 is a mono board. Two of them plus an AbleTec will make a nice amp.