Post your Solid State pics here.

[AndrewT]

Originally Posted by luka

why don't you use external site to upload pictures to

that's the problem (remote servers) that we should all try to avoid.

[Bonsai]

Today my new power amp the 'Ovation e-Amp' had its second outing. I played some Chris Botti (brass is always a good test!). I have put a few more pictures up on my website (just follow the link below). There is still a bit of work to do, but hopefully this project is finally coming to a close. 12 months of sweat.

[masood]

Originally Posted by Mooly

A poor pic part of preamp, the board at the bottom is a "hardware solution" to what should be done in software. The remote decoder is under the white plastic cover and I had to buy this in. Fully learning it will accept any "common" r/c commands, my pcb decodes the outputs and translates levels to operate fet switches.

this picture not seems of your single pair of mosfet 2sk1058 and 2sj162.thanks

[Mooly]

Originally Posted by masood

this picture not seems of your single pair of mosfet 2sk1058 and 2sj162.thanks

Each of the metal cans is a complete power amp with its own pair of FET's.

For anyone interested the "cans" are from Sony C9 Betamax recorders and were ideally suited to the job. They were the SMPS enclosure.

The amp boards were sized to be identical to the original SMPS board and the FET's mount using the original hardware for the two 2SC2335L switching transistors. The actual heatsink is fairly small but is bolted directly to the perforated can which is around 2mm thick and very effective at dissipating the heat.

The DC offset protection board and DC input filters were also sized identically to the two other boards on each PSU.

It was an absolutely perfect one off solution for building the amps.

Original pictures here,
Post your Solid State pics here.

[drowranger]

My first amplifier from this forum...

regards,
joel

[drowranger]

my two OPTIMOS amp. running on 72v dc. A very reliable amp complete with protection and soft clipping.

regards,
joel

[Alexontherocks]

Very nice. The internal heatsink solution looks very neat and efficient.

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[AndrewT]

Originally Posted by Alexontherocks

............The internal heatsink solution looks very neat and efficient.

I think the opposite.

[drowranger]

this one is in my room and using it today.although it has no chassis but it is quiet.and it runs on a 36vdc with vi limiter. just the taught this would spice up the forum.

regards,
joel

[Alexontherocks]

Originally Posted by AndrewT

I think the opposite.

The best type of heatsinks would have been high efficiency 12cmx12cm extrusions with 2 fans tightly bolted on the extremities in push pull configuration. Hard to beat that configuration but the heatsinks are quite expensive.

For reference only



Obviously the extrusion must be closed on all 4 sides.

I still think the end result looks pretty neat. Imho of course.

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