Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Instruments and Amps Everything that makes music, Especially including instrument amps.

how to attenuate a speaker as a mic?
how to attenuate a speaker as a mic?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 12th February 2007, 12:42 PM   #1
newmz is offline newmz
diyAudio Member
 
Join Date: Dec 2001
Location: Perth, Western Australia
Default how to attenuate a speaker as a mic?

I want to make something like the Yamaha Subkick microphone for recording my bass-drum. Check it out here .
It's very simple, wire the speaker terminals + and - to the hot and cold terminals if a mic socket and mount it somehow.
The main problem I anticipate after googling a bit is that the output will be very high and needs to be attenuated. I've also looked at that but all the information I find assumes you are working with mic impedances (around 600 ohms I think).
Can anyone tell me how to calculate say 10dB or 20dB attenuation given that the speaker has an impedance of 8 ohms (source) and my mixer is at about 2.6k ohms (input)?
__________________
"There's no greater sign of genius than the scorn of fools"
-Albert Einstein.
  Reply With Quote
Old 12th February 2007, 12:57 PM   #2
cliffforrest is offline cliffforrest  United Kingdom
diyAudio Member
 
Join Date: Sep 2004
Location: South Coast, UK
how to attenuate a speaker as a mic?
Put a 100R pot across the speaker with the centre pin going to the preamp. (and groundy end!)

Adjust for correct volume then either leave the pot in place or measure the up and down sections resistance and replace pot with two resistors.

Precision and excessive concern over the sound is not really appropriate here.
  Reply With Quote
Old 14th February 2007, 06:29 AM   #3
neutron7 is offline neutron7  Canada
diyAudio Member
 
neutron7's Avatar
 
Join Date: Dec 2003
Location: Toronto Canada
nice powerful output is great though. cant you plug it into a line input and use a pad?
  Reply With Quote

Reply


how to attenuate a speaker as a mic?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Attenuator doesn't attenuate. Not enough impedence? CigarBoxAudio Solid State 4 30th July 2009 12:58 AM
How to attenuate the alt kerrysun Full Range 1 30th October 2008 10:12 AM
Attenuate tweeter level by 2 db bastek Multi-Way 8 27th May 2008 11:08 PM
how to attenuate aleph p 1.7 elviukai Pass Labs 13 9th March 2007 06:47 PM
Attenuate? muhy3 Multi-Way 3 24th October 2004 02:53 AM


New To Site? Need Help?

All times are GMT. The time now is 11:56 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki