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!
Go Between and Go Between Plus kit BUILD THREAD
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Re: Go Between and Go Between Plus kit BUILD THREAD
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.PeterBregman wrote: ↑Mon Apr 20, 2020 7:55 amHi 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!
We just mount the 3mm led in 3mm hole in our products now.
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Joe ![Smile :-)](./images/smilies/icon_smile.gif)
JLM Audio
Capturing Audio without Injury
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Re: Go Between and Go Between Plus kit BUILD THREAD
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
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
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Re: Go Between and Go Between Plus kit BUILD THREAD
HI Dandanmohr wrote: ↑Wed Jul 29, 2020 4:23 amHello! 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
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.
Joe ![Smile :-)](./images/smilies/icon_smile.gif)
JLM Audio
Capturing Audio without Injury
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Re: Go Between and Go Between Plus kit BUILD THREAD
Hello,
A bit confused here on implementing two Go Betweens in a preamp build. I have a 48V tap on the transformer going to an AC/DC convertor to feed the Go Betweens. If I ground the output of the convertor to chassis ground I load down the voltages and only get 48V at the XLRs if both Go Betweens have the 48V engaged. With one phantom swithced on I get ~25V.
If I let the convertor ground float I get 48V at the XLRs referenced to the convertor but 0V between XLR pins and chassis. Am I missing something? The voltage between pins 1 and 2 on the XLRs is 0V when phantom is engaged.
Thanks
A bit confused here on implementing two Go Betweens in a preamp build. I have a 48V tap on the transformer going to an AC/DC convertor to feed the Go Betweens. If I ground the output of the convertor to chassis ground I load down the voltages and only get 48V at the XLRs if both Go Betweens have the 48V engaged. With one phantom swithced on I get ~25V.
If I let the convertor ground float I get 48V at the XLRs referenced to the convertor but 0V between XLR pins and chassis. Am I missing something? The voltage between pins 1 and 2 on the XLRs is 0V when phantom is engaged.
Thanks
Re: Go Between and Go Between Plus kit BUILD THREAD
Solved that previous post. I wasn’t hitting the minimum current draw of the converter, so the voltages were going haywire. All good now.