Multimeter for T/S parameter - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 5th May 2008, 02:23 AM   #1
Buzzy is offline Buzzy  Singapore
diyAudio Member
 
Join Date: Apr 2007
Default Multimeter for T/S parameter

I would like to test the T/S parameter with speaker workshop. I have read guides regarding this and found http://www.claudionegro.com/

However i don't have a multimeter.

May i know what i should look for when buying a multimeter for measuring the t/s parameters ? I don't wanna spend too much money on a multimeter as its not worth spending over $100 on a meter to test a $50 woofer. Thankz
  Reply With Quote
Old 5th May 2008, 05:37 AM   #2
Buzzy is offline Buzzy  Singapore
diyAudio Member
 
Join Date: Apr 2007
Is this the wrong thread to post this ?
  Reply With Quote
Old 5th May 2008, 06:56 AM   #3
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Nope, you just need to give people time to answer.

Any meter that measures true RMS would be perfect, but to be honest, you can use just about anything. I've achieved reasonable results with a £5 el cheapo special. Much more important is an accurate signal generator.
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 5th May 2008, 11:33 AM   #4
Buzzy is offline Buzzy  Singapore
diyAudio Member
 
Join Date: Apr 2007
pinkmouse to what accuracy must the meter measure ? I got confused by the measuring range and accuracy. In this link http://www.sanwa-meter.co.jp/oversea...x360trf_e.html
I see some ranges and stuff what should i look for when buying the meter for my purpose ?
  Reply With Quote
Old 5th May 2008, 12:29 PM   #5
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
depends on Fs of your driver.

If Fs is very low then your meter may waver (or worse) trying to read voltage on very low frequency signals.

Similarly, reading the test frequency becomes difficult when trying to go below about 25Hz. FL can be significantly below Fs. FH is a bit easier to measure since it is above Fs.

None of my handheld DMMs can work with Fs~=22Hz.
__________________
regards Andrew T.
  Reply With Quote
Old 5th May 2008, 12:33 PM   #6
Buzzy is offline Buzzy  Singapore
diyAudio Member
 
Join Date: Apr 2007
I need to measure Fs of a subwoofer driver too which i expect it to be arnd 20Hz. So its impossible to do that ?
  Reply With Quote
Old 5th May 2008, 12:39 PM   #7
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
certainly not impossible.
But, ask the retailer how well it measures low frequency voltages. Specifically in the range 10 to 15Hz, 15Hz to 20Hz and 20Hz to 30Hz.
If it can't do that then you're wasting your money buying the instrument for Bass driver testing.
My Bench meter does it beautifully. 50 secondhand from Ebay.
__________________
regards Andrew T.
  Reply With Quote
Old 5th May 2008, 01:41 PM   #8
Buzzy is offline Buzzy  Singapore
diyAudio Member
 
Join Date: Apr 2007
Its kinda confusing. I don't know how voltage is related to frequency. I went to a store to check out the meter just now and it does not state anything abt the frequency.
  Reply With Quote
Old 5th May 2008, 05:02 PM   #9
Buzzy is offline Buzzy  Singapore
diyAudio Member
 
Join Date: Apr 2007
I shld be looking for something that measures mVac and resistance right ? What other impt features other than the freq shld i be looking for ?
  Reply With Quote
Old 6th May 2008, 04:16 AM   #10
diyAudio Member
 
Join Date: Nov 2004
Location: sk
Send a message via AIM to ocool_15 Send a message via Yahoo to ocool_15
I bought a mastech MS8202A a while ago for $16 american + shipping.
at 2.81V
From 10Hz -1500hz it measured
1.7% high to -1.4% low( at 10Hz)
when compared to a Fluke 867 I had access to.
I checked Ebay and I couldn't find one right now but Electronnix was his username. The numbers would fluctuate a bit below 20Hz though. You may have difficulty with your amp/source being flat well below 20hz also.
  Reply With Quote

Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
speaker's BL parameter MisterTwister Multi-Way 24 29th January 2008 02:58 AM
Which is the most important TS parameter? Wombat2 Multi-Way 7 18th July 2006 11:27 PM
T/S Parameter unknown muhy3 Multi-Way 7 7th November 2004 01:18 PM
Tube parameter ? woody Tubes / Valves 2 7th April 2004 06:35 AM
Req. What does this parameter mean? stigla Tubes / Valves 9 7th March 2003 07:40 AM


New To Site? Need Help?

All times are GMT. The time now is 06:22 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2