[StevenACNJ]

I am thinking of building the 55 or 100 amp. I read some discussion on the website about monoblocks but didnt really see any specific info.

Can the amps be built as monoblocks? If so are you basically taking one stereo amp board and running it in a bridged mode?

Thanks

[andyr]

Steven,

Not quite.  You have several options when building an AKSA 55w or 100w:

1.  you can build both channels in one box, with the power supply PCB as is (half the board gives the R channel +/- rails and the other half the L channel +/- rails)

2.  you can build it like 1. except you either scribe the earth plate of the power supply PCB through the "star earth bolt hole" or simply cut the board in half.  This gives you two separate-earthed power supplies - ie. two separate channels except they share a power cord, fuse and switch.

I would call this a "90% monoblock" construction.

3.  you scribe/cut the power supply PCB into two separate halves and then have separate power IECs, fuses and switches.  IT. each channel is entirely independent.  This will give you slightly more "audiophility/sonic excellence" than 2. (and 2. gives you more than 1.!!).

This is true "monoblock" construction ... whether you put each channel in a separate case or not won't affect the sonics.  My setup is 3 x AKSA modules in a case (and, so, two cases for stereo) bcoz I have a 3-way active setup.  The 25w and the 55w modules sit on one heatsink; the 100w sits on the its own.  Each module has its own power cord/fuse/switch.

Regards,

Andy

[Al Garay]

I have AKSA 100watt in monoblocks. Each channel has its own enclosure, ps, pcb etc. Makes for short speaker cable runs.

Al

[AKSA]

Steven,

I suspect you are asking if the two amplifier channels can be bridged for 200W.

The answer is no.  I am considering a higher power AKSA, but the matching requirements are quite demanding - getting four perfect matches rather than two cuts your options right back and requires a huge inventory - but this is some way off and likely to be quite expensive.

Why don't you see if you can snag a listen, and work out whether you really need 200W?  In any event, a 100W AKSA will easily push 180W into 4R without raising a sweat.....

Cheers,

Hugh