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

Multi-Way Conventional loudspeakers with crossovers

speaker response mesurement
speaker response mesurement
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 15th April 2006, 07:17 PM   #1
AR_sound is offline AR_sound  Israel
diyAudio Member
 
Join Date: Jun 2004
Location: Modiin
Default speaker response mesurement

In order to go active with my Zanszen Z2-CF speakers, I have started to mesure the drivers (10" closed suspension woofer + electrostat mid/tweeter, crossed at 800Hz with the passive old crossover).

I'm intend to use Jens and Bob Ellis active crossover from the diyAudio group buy.

software I used was Speaker Workshop,
with dynamic microphone and laptop (using the mic input- there is no line input in the lapptop PC).

I have took the sound card calibration while Instead of wire link from line out to line in, I used voltage divider (10K--100R) from the line out into the mic input of the laptop (1% of the signal from line out goes to mic in), this seems to be OK.

Problems/ questions:

1- MLS signal clipps - taking the volume output down in the Audio control panel making no change.

2- I did first mesurements with Audio-technica AT834-2 dynamic microphone, It have a 600Ohm impedance and it is too low output and too low impedance for my soundmax sound card in my Compaq nc6000 lapptop.

From reading here I learned it's better to use a flat respone with calibration file, condenser microphone like the Pansasonic WM-61.

I now VIKASH from the forum have these, but he now in holiday.

My question: is it necessary to use the WM-61 electret with the external mic amplifier? (As we can see at the Madaboutsound.com).

If I callibrate the software from the line output to the mic input, Means I can correlate the internal mic amplifer in my sound card- so why should I use an external mic amp?
(one more- do I have to correlate from the speaker workshop (calculate) or the software does this automaticely).

If it is not necessary I can connect the electret mic directly into the mic input at my laptop (Do I need 6v battary for the WM-61?).

If I have to use external mic amp. I will have to use my pentium3 450 old PC and probabely have to buy a modern sound card).

Last question regardings mesuring Dipole electrostat-
I found it diffecult (take this as understatment) to mesure correctly the high region of the dipole, from the fact that the microphone can be as close as say 40-50 cm from the dipole, and the response vary a lot from moving the microphone position.
Any help from experianced dipole users?

I now I had too many questions for a single post,
but any help will be welcome.

Thanks,

Avi.
  Reply With Quote

Reply


speaker response mesurementHide 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
Why the emphasis on flat speaker response? jmikes Multi-Way 46 8th August 2017 02:31 AM
Mesurement tools for sound. King Nothing Everything Else 0 19th December 2008 02:37 PM
Mesurement electret mic problems Bazukaz Parts 1 27th August 2006 03:13 PM
Speaker Response Problem sma Multi-Way 13 16th July 2004 10:56 PM
speaker frequency response sardonx Multi-Way 8 3rd December 2003 12:30 AM


New To Site? Need Help?

All times are GMT. The time now is 06:39 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki