The sunn Forum
Sunn Musical Equipment => DIY => Topic started by: Greg_M on February 23, 2011, 08:16:35 am
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I believe the way my 200S is set up is for 8 ohms on the left speaker jack.
I want to change that to 4 ohms.
Is it as simple as just swapping wires?
I was thinking of taking both jacks loose from the chassis and wrapping them with tape after soldering a wire on to the black wire (ground) and brown wire (4 ohms) and putting in a new jack on the back. Seems like that might be safer.
After this much work I don't want to burn anything up.
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I don't have a Sunn in front of me, but I think the left jack is the primary so if it's set up for 8 and 4 ohms, the right jack should already be set up for running a single 4 ohm load. Also, there are threads describing the jack wiring in detail, but I sure couldn't find them with a quick search. Maybe you can have better luck searching than I did, I know there is specific jack wiring and switching info somewhere...
I think it would be a shame to cut another "un stock" hole in that pretty amp. :wink:
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My solution has always been to add another cab :-D
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I think it would be a shame to cut another "un stock" hole in that pretty amp. :wink:
Heaven forbid..... :-)
I was just going to replace the existing jacks with a 4 ohm on the left and a dummy jack on the right and tape up the originals and leave them inside the chassis in case I want to put it all back
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This thread should answer your questions about standard output jack wiring:
http://sunn.ampage.org/sdp/index.php/topic,4844.0.html
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Why not just use the 4 ohm jack as is and not use the 8 ohm jack?
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Wasn't sure exactly how that worked and if you needed other stuff plugged in and what not.
I have now added two new jacks to the back where the old ones were.
I added a brown jumper to the existing jack's brown wire and a black wire to the existing jack's black wire. I taped up the old jacks and pushed them up in the chassis and mounted the new jacks.
The left jack is now 4 ohms and the right jack is nothing, but looks nice.
If I ever want to return it to stock, I can just snip the jumpers and remount the original jacks
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I had Tony Krank (Krank Amplifiers) put in a rotary switch and I use 4,8,16 ohms. Works pretty slick.
Doc
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This thread should answer your questions about standard output jack wiring:
http://sunn.ampage.org/sdp/index.php/topic,4844.0.html
That's the one I was thinking of, I'm just not a great searcher!
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I had Tony Krank (Krank Amplifiers) put in a rotary switch and I use 4,8,16 ohms. Works pretty slick.
Doc
Excellent Idea!
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I think it would be a shame to cut another "un stock" hole in that pretty amp. :wink:
Heaven forbid..... :-)
I was just going to replace the existing jacks with a 4 ohm on the left and a dummy jack on the right and tape up the originals and leave them inside the chassis in case I want to put it all back
Greg, You can use the 4 ohm jack for a 4 ohm load cab without having to have anything plugged into the 8 ohm. I do that with my Sentura II. The clone cabs I built are 4 ohms each...so.....when using one cab I plug into the "right" 4 ohm output jack, and when I use both cabs, I use my series box...which puts the two 4 ohm cabs in series (8 ohms)... and use the "left" 8 ohm output. By doing that you don't have to do a thing to the amp and keep it original
Rob
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I should have waited a day.
Next time I pull the amp out of the box I will do it that way.
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This thread should answer your questions about standard output jack wiring:
http://sunn.ampage.org/sdp/index.php/topic,4844.0.html
That's the one I was thinking of, I'm just not a great searcher!
It's a challenge sometimes. If you want to post a picture a second time in a different thread, you get an error message unless you re-name the file. I try to remember what words I might have used. Mechanism or orange black red didn't find it, but I remembered your comment about the bright pictures and used flash and rust :)