Hello all, I need to pick up audio from a headphone output and send it to the first active speaker which has balanced inputs, and I would like to add a balanced output to the active speaker too for daisy-chaining a second too
Does anyone have any simple schematics come to mind to do this? The main thing to consider is to have a volume control on the converter so that the headphone output volume can be set and left alone
Thanks and regards
Randy
Does anyone have any simple schematics come to mind to do this? The main thing to consider is to have a volume control on the converter so that the headphone output volume can be set and left alone
Thanks and regards
Randy
Thanks man, but the first link take me to this and starts a download for something called Opera GXsetup.exe
Dont click
Dont click
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Thanks man, I didn't think it was intended. The site that I use to rip MP3s from tube does the same on the first time clicks per download
I would like to have a go at making something like the second link. Not sure as to implications for picking up from headphone out, though. Its not the Headphone/line out dual purpose single jack as on cheap keyboards. Just a regular headphone out
I would like to have a go at making something like the second link. Not sure as to implications for picking up from headphone out, though. Its not the Headphone/line out dual purpose single jack as on cheap keyboards. Just a regular headphone out
Thanks for sharing. So this circuit, if I am reading correctly, is a mono balanced input and output on the left side and a second 600R mono output on the right?
What I need to do is:
Place the headphone amp in one case. Take the audio out from that board and filter it for 2.1 channels of stereo and sub signals. Then I have to fit 3x XLR sockets to the case to output those three channels
My active speakers. The amp boards have balanced inputs. I have to add a pass through to that to daisy-chain another speaker to each
What I need to do is:
Place the headphone amp in one case. Take the audio out from that board and filter it for 2.1 channels of stereo and sub signals. Then I have to fit 3x XLR sockets to the case to output those three channels
My active speakers. The amp boards have balanced inputs. I have to add a pass through to that to daisy-chain another speaker to each
Thank you for that. If I insert the 2.1 filter between the TRS and transformers, I'll need one more transformer for the .1 channel, right? I should be able to work with this. Thank you
Yes, every channel (up to zillion : 1) needs a separate transformer. Use a 1:1 type, audio capable. Have them perpendicular placed if close to each other - you've got three axis available! I've not quite in view how to extract the .1 channel from a stereo headphone output, but that's your challange!
Thanks for everything man. For the 2.1, I am using a 2 into 3 dsp board
Hey man, if I am understanding this now, linked would be the correct transformers? The two pin side is signal and earth and the three pin side is signal, signal- and earth?
I think I might need to connect the 2.1 filter first to the headphone out and then add one of these transformers to each of the 3 outs on the filter. Would it help to have another two transformers between the headphone out and the 2.1 filter?
Yes, three pin side is signal+, middle pin is XLR-ground (separated from the Jack-ground!), signal-.
Yes indeed.
I don't think so, unless there is a good reason for it, eg avoiding another (yet unknown) groundloop which would cause hum.
This is what signal transformers are used for, and for level shifting if needed.
Keep in mind that signal transformers have a limited frequency respons, due to the used ferrite in the core (the topic of my thesis at the end of my study).
The more transformers in series, the more signal (quality) loss. It's worth searching for "quality audio transformers" on the net.
Best wishes and go nuts! I'll try looking for some good ones. Today I also came across an unbalanced to balanced converter board that doesn't use transformers
https://www.aliexpress.com/item/100...AocZe0hj&utparam-url=scene:search|query_from: