Author Topic: behringer mic 100 Schematic?  (Read 6185 times)

roberflas

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behringer mic 100 Schematic?
« on: September 15, 2005, 10:32:20 AM »
Any one have schematic of this preamp?
Thank you


gyraf

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behringer mic 100 Schematic?
« Reply #1 on: September 15, 2005, 10:56:43 AM »
Beh are notorious for not parting with their schemos..
..note to self: don't let Harman run your company..

roberflas

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behringer mic 100 Schematic?
« Reply #2 on: September 15, 2005, 11:11:14 AM »
Yes, but they copy too much devices of other brands... Je, Je... :twisted:  :grin:

rodabod

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behringer mic 100 Schematic?
« Reply #3 on: September 15, 2005, 11:28:53 AM »
Do you have one?

I'd be interested in seeing some "Gear Pr0n".

Apparently there are some simple mods for that mic pre.
Quote from: tv
punchy fat bastard chip

roberflas

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behringer mic 100 Schematic?
« Reply #4 on: September 15, 2005, 11:40:28 AM »
Yes, in this moment I have one dissasemble in the table, I make some photos but I don´t know how to put in this thread.
It have three small PCB´s with a lot of SMD components is very dificult to trace a rougth schem from it.

pucho812

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behringer mic 100 Schematic?
« Reply #5 on: September 15, 2005, 12:21:21 PM »
to put it in this thread. First get a photobucket account. they are free
http://www.photobucket.com photobucket does free online hosting of pics. Next upload pics. Then copy and past the IMG commands for said pictures into a nessage here. It will link to those photos and show them.
Last have a beer.
Every mic has a purpose it might be a door stop or a hammer, but every mic has a purpose.

rodabod

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behringer mic 100 Schematic?
« Reply #6 on: September 15, 2005, 12:22:53 PM »
If you have trouble hosting the photos, send them to me at roddybell at gmail dot com
Quote from: tv
punchy fat bastard chip

roberflas

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behringer mic 100 Schematic?
« Reply #7 on: September 15, 2005, 10:23:57 PM »
testing pics




roberflas

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behringer mic 100 Schematic?
« Reply #8 on: September 15, 2005, 10:40:58 PM »
more pics








adrianh

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behringer mic 100 Schematic?
« Reply #9 on: September 15, 2005, 10:47:09 PM »
that logo on that vacuum tube just made me barf!


roberflas

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behringer mic 100 Schematic?
« Reply #10 on: September 15, 2005, 10:59:21 PM »
There is 6 Transistor 2n4403 in main PCB and 1 IC 4580 in Main PCB.
In meters and pots PCB:
2 Tip 31C
1 BC556C
1 c 230AB
2 4580 IC´s
2 IC´s with this numbers 339, I think are for leds drive
Valve PCB:
1 7805 regulator for heater ( I think)
and 1 12AX7 tube

roberflas

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behringer mic 100 Schematic?
« Reply #11 on: September 15, 2005, 11:04:00 PM »
Is Behr´s logo and down say "Premiun selected"

clintrubber

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behringer mic 100 Schematic?
« Reply #12 on: September 16, 2005, 04:28:52 AM »
Quote from: "roberflas"

Valve PCB:
1 7805 regulator for heater ( I think)
and 1 12AX7 tube

Just wondering - have you found yet what supply voltage is used for the tube ?
Does this unit have phantom-power ? Who knows - perhaps tube & phantom fed from the same supply.

Quote
2 IC´s with this numbers 339, I think are for leds drive


That'll be the LM339, with four comparators per IC. Yes indeed, often used for LED-bars.

Thanks,

  Peter

clintrubber

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behringer mic 100 Schematic?
« Reply #13 on: September 16, 2005, 04:35:55 AM »
Quote from: "roberflas"
Yes, but they copy too much devices of other brands... Je, Je... :twisted:  :grin:

Right, I've already found the schematic: Beh-schematic  :grin:
Or wasn't this the one, but the ART-unit they were inspired by? :wink:

OK then, their MIC200 added some stuff of their own as I understood.

mhelin

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behringer mic 100 Schematic?
« Reply #14 on: September 16, 2005, 05:00:35 AM »
I guess the topology is more like the one uesd with Green Pre. MIC100 though uses three 2n4403's paralleled for lower noise. Not bad, I've got single MIC100 though haven't used it much (once for kick drum).

TIP31C's are propably used in the output stage? No they must be used in the regulator circuit.
Mikko

clintrubber

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behringer mic 100 Schematic?
« Reply #15 on: September 16, 2005, 06:28:34 AM »
Quote from: "mhelin"
I guess the topology is more like the one uesd with Green Pre. MIC100 though uses three 2n4403's paralleled for lower noise. Not bad, I've got single MIC100 though haven't used it much (once for kick drum).

TIP31C's are propably used in the output stage? No they must be used in the regulator circuit.


Sure, I was just kidding. Too bad though it looks same story again: decent product, especially for the price, not necessarily the same circuit as 'the original box' (and often with added & useful features)... but 'stealing' again the look of that previous product so people think it's nothing or little more than a plain copy...

roberflas

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behringer mic 100 Schematic?
« Reply #16 on: September 16, 2005, 08:35:00 AM »
Quote from: "clintrubber"
Quote from: "roberflas"

Valve PCB:
1 7805 regulator for heater ( I think)
and 1 12AX7 tube

Just wondering - have you found yet what supply voltage is used for the tube ?
Does this unit have phantom-power ? Who knows - perhaps tube & phantom fed from the same supply.

Quote
2 IC´s with this numbers 339, I think are for leds drive


That'll be the LM339, with four comparators per IC. Yes indeed, often used for LED-bars.

Thanks,

  Peter


Yes this unit have phantom power at nominal voltage of 44V, with a 20kOmh digital tester.
The voltage for tube, phantom and ssymetryc rails voltage come from voltage tripler (condensators and diodes) in main pcb, all from 9VAC external adapter.
I will make some test for voltage values in various points.

clintrubber

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Re: behringer mic 100 Schematic?
« Reply #17 on: March 11, 2013, 11:36:12 AM »
Hello,

Old topic indeed! :-)

Just wondering, any drawn schematics that anybody is aware of ?

I'm curious if the Hi-Z input is done by a dedicated buffer-stage or that it is simply a seriously attenuated input going into the mic-stage.

I figure I can also perhaps have a look at one of the ART-schematics (if available) to get an idea...

Best regards


 

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