On 12/04/2010 12:43, Part timer wrote:


( However, I was copying an original board by *photocopying* the copper
side and then hand-reworking the transparency! FWIW, it was a NAIM 250
power amp which I cloned for a tri-amp setup! )

--
Ron

How much did a clone NAP 250 cost to build?

It was over 10 years ago, and I built 3 matching ones to drive my active
Isobariks.

Roughly, the costs would be in the following ballpark I think:

Torroidal xfmr: £50
Main reservoir electrolytics : £30
Case: £50
Output devices: 8 x £10?
Other parts: nominal

Estimate say £250 each.

I once posted some photos of them, let's see...

http://www.lowe-family.me.uk/d-i-y/DSCF1278.JPG
http://www.lowe-family.me.uk/d-i-y/DSCF1279.JPG
http://www.lowe-family.me.uk/d-i-y/DSCF1281.JPG
http://www.lowe-family.me.uk/d-i-y/DSCF1282.JPG
http://www.lowe-family.me.uk/d-i-y/DSCF1283.JPG
http://www.lowe-family.me.uk/d-i-y/DSCF1284.JPG
http://www.lowe-family.me.uk/d-i-y/DSCF1285.JPG
http://www.lowe-family.me.uk/d-i-y/DSCF1286.JPG

--
Ron