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FDP Forum / Amp Mods, Repairs, and Projects / Need Help with New Micro Cube!

6L6
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San Francisco, CA

Oct 13th, 2017 06:26 PM   Edit   Profile   Print Topic   Search Topic

I bought a new Micro Cube amp and didn't realize that the out jack had been changed from the previous 1/4" size to 1/8".

How hard would it be to change out the 1/8" plug and replace it with a 1/4" plug like they used to come with?

Thanks for your help!

6

Pinetree
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NW Pennsylvania

Oct 14th, 2017 03:32 AM   Edit   Profile   Print Topic   Search Topic

Probably not too hard, but I've never been inside one.


Would an adapter work?

External link

6L6
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San Francisco, CA

Oct 14th, 2017 08:16 AM   Edit   Profile   Print Topic   Search Topic

Pinetree: Yes, I already have that adaptor and it will work.

However, the 1/8" plug is so weak that it would be quickly broken off when gigging.

6

Peegoo
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Oct 14th, 2017 08:51 PM   Edit   Profile   Print Topic   Search Topic

The existing 1/8" jack is most probably board mounted. That means the footprint won't match a 1/4" jack.

But all is not lost. Get yourself a Cliff TRS switching jack. Cliff is the one for two reasons: it's good quality, and it has a plastic body which keeps it insulated from the panel you mount it to.

Desolder the 1/8" jack from the board. On each of the now-vacant solder pads, solder in a jumper wire about 3" long to allow you to make connections to the new 1/4" jack that's mounted close by in a hole you've drilled in the rear panel.

You can use a meter to test the 1/8" jack's contacts and where they connect to the board, and match that scheme to the new 1/4" jack.

Typical Cliff 1/4" jack

(This message was last edited by Peegoo at 10:55 PM, Oct 14th, 2017)

6L6
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San Francisco, CA

Oct 14th, 2017 11:11 PM   Edit   Profile   Print Topic   Search Topic

Thanks, Peegoo!

6L6
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San Francisco, CA

Oct 17th, 2017 09:40 PM   Edit   Profile   Print Topic   Search Topic

Solved the problem by swapping a friend for an older one with the 1/4” line out.

6

willie
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Too Near Atlanta GA

Amp Tech Emeritus
Oct 18th, 2017 07:09 AM   Edit   Profile   Print Topic   Search Topic

Good solution...

w

Peegoo
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Oct 18th, 2017 08:01 AM   Edit   Profile   Print Topic   Search Topic

Quitter!

:0)

thumbpicker
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St. Louis

"Thumbpicks don't slide into soundholes"
Nov 7th, 2017 08:54 AM   Edit   Profile   Print Topic   Search Topic

I think that adapter is available in a right angle style as well. So you don't kill it accidentally. I get a bit anxious about adapters that project out too far.



FDP Forum / Amp Mods, Repairs, and Projects / Need Help with New Micro Cube!




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