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Posted by Feanor ( A ) on August 19, 2010 at 06:18:48

In Reply to: RE: REVIEW: Class D Audio SDS-258 Amplifier (SS) posted by kal1971@juno.com on August 18, 2010 at 17:46:05:

Karl,

The case top, bottom, and front are 1/2" MDF; the sides are 1x4 pine. The back is Hammond aluminum case cover , see item 1434-20 here , which I bought from Parts ConneXion.

This was a cheap but not great case solution. The 1/2" MDF is too thick to easily cut out for controls, e.g. the on/off switch on the front. It's also too thick for drilling to mount the PC boards. I struggled without one, but I'd recommend a set of Forstner drill bits to create thinner spots in the MDF where you need to insert bolts or fit a control.

The Hammond aluminum panel, (1434-20), is a bit thin on the other hand. I recommend a "step drill" for drilling circular holes in the aluminum. I fitted the IEC AC input by drilling a circular hole, then used a file to complete the fitting -- this pretty tedious.

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