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mbates14 14th November 2012 10:08 PM

Orion 2500D
Anyone know the outputs that go in this? and where they go?

someone was in this thing before me and its got every output under the sun mixed around in it.


timwebb 15th November 2012 01:22 AM

this the chrome one correct?

Perry Babin 15th November 2012 03:46 AM

In one version, they used IRF9640s and IRFB31N20Ds. There were 5 9640s and 3 31N20s in each of the 4 groups. You can tell which are in each group by finding the ones with the source legs directly connected.

mbates14 15th November 2012 04:12 AM

Well I see some 31N20s in there.

Can they be subbed, or the original avail from digikey? (edit: yes they are)

Also, why the difference in mosfets? Why cant they all be the same? They both appear to be N channel.

No its not chrome. More of a dull gray/alum

timwebb 15th November 2012 04:29 AM

they cant be subbed... nothing will be stable that i seen.. i havent found a sub for that part they are not hard to find.

Perry Babin 15th November 2012 05:24 AM

IRF640s were used in some amps that use the 31N20D transistors but they weren't as good (ran hotter, less reliable).

The 9640s are P-channel FETs.

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