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more10
15-Apr-09, 10:21
Maybe I get my hands on a lab DC aggregate. It has no eart, just +/- terminals. Will it do?

What DC voltage should I use for testing the amp?
V-bro
15-Apr-09, 11:14
I normally start at 37Vdc...

------X-max. can be several meters on any driver, too bad it can be done only once...------
more10
15-Apr-09, 11:46
It is a 30V, 2.5 A. I guess it is too low.
V-bro
15-Apr-09, 14:03
It would be ok with other voltage limiting resistors...

Instead of the usual 1,18M, 422K(x2) and 392K you should then use something like 560K, 200K(x2) and 180K (I've tried this and then the amp will work from roughly 24V to 38V....

------X-max. can be several meters on any driver, too bad it can be done only once...------
more10
15-Apr-09, 20:40
It's just for testing purposes, including the voltage limiting resistors.
more10
15-Apr-09, 22:42
Will http://www.elfaelektroonika.ee/cgi-bin/web_store.cgi?artnr=69-847-61&lng=eng do?
V-bro
15-Apr-09, 23:40
Nope, it's too light... just 2x30Vdc...

Nicest would be something 2x60Vdc or at least 2x45Vdc...

------X-max. can be several meters on any driver, too bad it can be done only once...------
V-bro
15-Apr-09, 23:43
I've bought this 2x60Vdc specimen recently:
http://nl.farnell.com/digimess/pm6003-3/power-supply-60v-3a-triple/dp/1664830

(picture shows the single one too, you only get the large box..)

It's a bit noisy, but good enough for testing. It's got a 5V output as well, nice for AMP2/7 or Truepath...



------X-max. can be several meters on any driver, too bad it can be done only once...------