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mbates14 15th April 2013 03:02 PM

Anyone know where to get the output filter toroids at? i got one that someone hacked out the originals and clobbered in electrical tape and some weird aftermarket one, and its only single which is wrong...

any ideas?

JonSnell Electronic 15th April 2013 03:26 PM

Contact the manufacturer of the amplifier and they will advise you.

mbates14 15th April 2013 03:58 PM

i dont think MTX will sell to third parties. ive tried this before.

JonSnell Electronic 15th April 2013 04:07 PM

They should put you in contact with a dealer who has a service department that may sell you them.

mbates14 15th April 2013 08:28 PM

I called MTX and they do not sell solderable parts. They only sell replacement shrouds, screws, etc... but absolutely no circumstances sell PCB parts.

Perry Babin 17th April 2013 12:15 AM

In the past, they have been willing to give the value of the output filter inductors. If you have the value, you can wind new inductors.

mbates14 17th April 2013 01:32 AM

Wonder who i need to talk to do that.

I got replacement cores from junk MTX amplifiers, not worth repairing. like 251D and 311D, etc.. which the double stacked/glued cores are identical. Now i just need to get the windings right.

Perry Babin 17th April 2013 06:45 AM

1 Attachment(s)
It's not possible to tell if the cores are identical to the original ones without testing. If they are the same, you can simply wind the cores the same as the originals. I don't know if they are the same as on the larger amps. The 92001 used 27 turns of parallel red and green. The attached photo shows how the windings are configured to go into the board.

mbates14 17th April 2013 02:16 PM

Well, the cores I salvaged were from the output stage of the other amps. And they appear to have the same ID, OD, length, width, etc..

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