Headphone amp with multiple outs idea

[Fernando Bacigalupo]

Hi guys!
I heared about this idea, but I have some doubts about how they works. Some studios have this kind of equipment (at least here in Buenos Aires)
The idea is to build an amplifier not really fancy, but arround de 50 W. and put in series a resistor (low in ohms but hughe in W) with some headphone outputs.
I thinking in build an amp with some TDA i have. But i'm not sure about the value of the resistor.
what do you say guys? I missing something?

Cheers

 

[MidnightArrakis]

[I missing something?] -- YEAH!!!.....LOTS!!! What you are proposing is basically an extremely inefficient and completely wasteful manner of driving several headphones from a single source. So.....this is how headphone distribution systems are designed and used there in Buenos Aires??? SHEESH!!!

What -- I THINK -- that you might need is something along the lines of what is shown here:

https://www.fullcompass.com/search/?txtAll=headphone+distribution
[I thinking in build an amp with some TDA i have] -- You're talking about one of these devices?


Maybe one of these circuits might help you out:

https://320volt.com/en/tda-serisi-anfi-entegreleri-dokuman-designers-guide/
Then.....you can always use these devices:

https://8thstreet.com/Product/Get/9...portable-battery-operated-headphone-amplifier
https://8thstreet.com/Product/Get/81494/onstage-ha4000-4-channel-headphone-amplifier
/

 

[JohnRoberts]

consider searching "headphone distribution systems"

JR

 

[Chandra]

Google for Rane HC 4 schematics for 4 channel headphone amp.
Regards.

 

[Whoops]

what do you say guys? I missing something?

I mate I think you're missing something really important is that you can get a pretty decent 8 stereo channels with 8 independent stereo headphone amplifiers for very cheap.
I use one of these units regularly and there's nothing wrong with it, it works perfectly fine for the task and costs peanuts:

https://www.thomann.de/gb/behringer_ha8000_v2.htm​