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Re: Go Between and Go Between Plus kit BUILD THREAD

Posted: Mon Apr 20, 2020 7:55 am
by PeterBregman
Hi Joe,

I'm making a front panel for a 4-channel pre using Go-Betweens. I saw the drill description for the switch spacing on the kit page, but I don't see where it says what the hole size should be for the phantom LED bezel. I'm guessing around 4mm, but I want to be sure. Thanks!

Re: Go Between and Go Between Plus kit BUILD THREAD

Posted: Mon Apr 20, 2020 8:05 pm
by Joe Malone
PeterBregman wrote:
Mon Apr 20, 2020 7:55 am
Hi Joe,

I'm making a front panel for a 4-channel pre using Go-Betweens. I saw the drill description for the switch spacing on the kit page, but I don't see where it says what the hole size should be for the phantom LED bezel. I'm guessing around 4mm, but I want to be sure. Thanks!
Hi see attached spec for the bezel. It has a front 5.9mm flange and can have a 4.2mm hole with rear 5.2mm countersink or 4.8 to 5.2mm hole. But best to have a bezel with you to see the best way to go for you.

We just mount the 3mm led in 3mm hole in our products now.

Re: Go Between and Go Between Plus kit BUILD THREAD

Posted: Wed Jul 29, 2020 4:23 am
by danmohr
Hello! I've used the Go Between kits on several projects now but I just tried adding a Variable Pad kit to the front end of a preamp for the first time and, when phantom power is applied, the variable pad pot is extremely scratchy. With phantom power off, all is well with the world. Is this a known limitation or is there something I should try to debug?

My only guess is that the phantom is introducing DC on the pot and the carbon pot is not working well under those conditions but I have a pretty solid track record of being wrong about these things.

Thanks!

Dan

Re: Go Between and Go Between Plus kit BUILD THREAD

Posted: Wed Jul 29, 2020 10:34 am
by Joe Malone
danmohr wrote:
Wed Jul 29, 2020 4:23 am
Hello! I've used the Go Between kits on several projects now but I just tried adding a Variable Pad kit to the front end of a preamp for the first time and, when phantom power is applied, the variable pad pot is extremely scratchy. With phantom power off, all is well with the world. Is this a known limitation or is there something I should try to debug?

My only guess is that the phantom is introducing DC on the pot and the carbon pot is not working well under those conditions but I have a pretty solid track record of being wrong about these things.

Thanks!

Dan
HI Dan
Make sure you have no DC path to 0v, usually by a centre tap on an input transformer going to 0v ground. The whole input circuit should be floating or the phantom power will not work properly anyway.

Do you have a circuit for the input of the pre amp you are running this go between and Variable pad into? And a couple of photos of the wiring etc.