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Author Topic: DIY attenuator pad wiring diagram?  (Read 7582 times)

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Offline lpmaskman

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DIY attenuator pad wiring diagram?
« on: October 04, 2013, 01:49:52 PM »
Is anyone have a simple passive attenuator wiring diagram for stereo jack cables? About 10 or 20 dB will be okay I think.
I'd like build one for my Zoom H2.
(I want use my mic in as line in if the situation needs it, because the line have the typical defect and I'm not rich enough to buy a new recorder...)
« Last Edit: October 04, 2013, 05:27:11 PM by lpmaskman »
Mics: AT853, ATM35
Inbetween: CA-9100, 3-wire battery box (homemade)
Recorders: Olympus LS-12, Zoom H2 (4 channel line input mod)
Video: Panasonic HC-V770 (x2), GoPro Hero4 Silver, Sony RX10mkII

Offline Chuck

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Re: DIY attenuator pad wiring diagram?
« Reply #1 on: October 04, 2013, 04:44:24 PM »
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Offline lpmaskman

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Re: DIY attenuator pad wiring diagram?
« Reply #2 on: October 05, 2013, 04:54:17 AM »
Here's a good source:

http://www.uneeda-audio.com/pads/
Thanks! I'm trying to figure out what I need, but I see it's mostly for XLR cables and I don't know how to use it for simple stereo minijack one.
Mics: AT853, ATM35
Inbetween: CA-9100, 3-wire battery box (homemade)
Recorders: Olympus LS-12, Zoom H2 (4 channel line input mod)
Video: Panasonic HC-V770 (x2), GoPro Hero4 Silver, Sony RX10mkII

Offline anr

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Re: DIY attenuator pad wiring diagram?
« Reply #3 on: October 05, 2013, 06:29:49 AM »
You definitely need one of these to, for example, record on a Zoom H2 from a soundboard.  You will find 10dB is adequate.   20dB is far too much.  In practice, the resistors will all fit inside the 3.5mm connector shell.   

Offline lpmaskman

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Re: DIY attenuator pad wiring diagram?
« Reply #4 on: October 05, 2013, 07:22:19 AM »
You definitely need one of these to, for example, record on a Zoom H2 from a soundboard.  You will find 10dB is adequate.   20dB is far too much.  In practice, the resistors will all fit inside the 3.5mm connector shell.   
I recorded well from SBDs with the line-in in the past. So you think the 10dB pad will be enough for the mic in as use as line in?
Mics: AT853, ATM35
Inbetween: CA-9100, 3-wire battery box (homemade)
Recorders: Olympus LS-12, Zoom H2 (4 channel line input mod)
Video: Panasonic HC-V770 (x2), GoPro Hero4 Silver, Sony RX10mkII

Offline anr

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Re: DIY attenuator pad wiring diagram?
« Reply #5 on: October 05, 2013, 08:02:21 AM »
I think the issue here is that the H2 Line Input does not cope, and is not designed to, with "pro" levels from soundboards.   It is only specified for "consumer" levels.  Therefore, it will not overload if you record from your CD player, but will from a soundboard.

Adjusting the record level on the H2 is perfectly adequate for mic in levels, so you don't need to worry. 


Offline lpmaskman

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Re: DIY attenuator pad wiring diagram?
« Reply #6 on: October 05, 2013, 10:28:08 AM »
I solved the problem. Found my old mp3 player's remote controller which has a volume controller too. I tried with it. Connected to my Tascam audio interface and blasted music on max level(very loud), without this it really distorted but I turned the level down on remote and I got clean signal. :D
Mics: AT853, ATM35
Inbetween: CA-9100, 3-wire battery box (homemade)
Recorders: Olympus LS-12, Zoom H2 (4 channel line input mod)
Video: Panasonic HC-V770 (x2), GoPro Hero4 Silver, Sony RX10mkII

Offline DigiGal

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Re: DIY attenuator pad wiring diagram?
« Reply #7 on: October 05, 2013, 11:11:56 AM »
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