[BC] Compact Audio Power Amp

[Glen Kippel]

On 6/23/09, Larry Lamoray <lists at systemsstore.com> wrote:
>
> Hi All,
>
> Knowing that a number of you on this list do work in other industries as
> well, anyone know of a good quality compact audio power amp - 100 W
> minimum?
>
> This is to be embedded in a case with a large format LCD Screen and
> speakers, so physical size is an issue. Prototype has a DC powered amp (car
> system) but I'm looking for AC power.

----------------

Well, you could just build or purchase a 12-volt power supply and use what
you have.  We have a nice little 1-RU Carvin DCM150 here that will crank out
150 watts into 8 ohms in bridged mode.  It uses some sort of small amp
modules, maybe SanKen, I don't know but most of the guts consist of a toroid
power XFRMR and power supply.  There's a lot of air in the box and it would
be possible to shrink it.  It wouldn't be too hard to build an amp, try
http://www.datasheetcatalog.com/datasheets_pdf/S/A/P/1/SAP15.shtml
SanKen Darlington
transistor pairs in either SAP10 or SAP15, 100-watt or 150-watt
respectively.  Again, the power supply would take up the most space in your
cabinet unless you wanted to mount it externally.