A Test. How much Voltage (power) do your speakers need? - Page 4 - 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
View Poll Results: I measured the test tone at:
2 volts or less 143 37.34%
Between 2-5 volts 130 33.94%
Between 5-10 volts 51 13.32%
Between 10-20 volts 23 6.01%
Over 20 volts. 36 9.40%
Voters: 383. You may not vote on this poll

Reply
 
Thread Tools Search this Thread
Old 20th January 2012, 07:23 PM   #31
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
I'm not in a position today to do your test, but with the last proto, 6V into a 97dB MB (Re=6.3) driver was unbearable in room with tones or noise within it's passband (<300hz). Measured, 2 speakers and with a Fluke 287 at the terminals.
  Reply With Quote
Old 20th January 2012, 09:55 PM   #32
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Thanks Brett. Hard to say from that, but I might put you right at 2V for the -12dB.
If 6V rms is as loud as you ever want it, then that would be 8.5V peak. Drop that down 12dB and you're at 2.12 volts. Ballpark, anyway.

I hope that some more of you get a chance to do the test this weekend. It's nice to know all the different configurations and voltage ranges out there.
  Reply With Quote
Old 20th January 2012, 10:03 PM   #33
diyAudio Member
 
tuxedocivic's Avatar
 
Join Date: Jan 2011
Location: Ladysmith, BC
Wow, 10 votes for 2V or less already. So what does that mean? Most everyone only needs an 8 watt amp?

I feel bad for the people who got over 20V. They'll need 800 watts or more if I'm not mistaken!
  Reply With Quote
Old 20th January 2012, 10:06 PM   #34
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
Quote:
Originally Posted by Pano View Post
Thanks Brett. Hard to say from that, but I might put you right at 2V for the -12dB.
If 6V rms is as loud as you ever want it, then that would be 8.5V peak. Drop that down 12dB and you're at 2.12 volts.
That's the loudest I could stand being near them with a tone, which I would equate to an average level for dynamic content. Peaks could easily exceed that by 20dB and still be bearable, providing the system is still within it's linear range.

See Bob Cordell's dynamic content and power tests to get what I mean.
  Reply With Quote
Old 20th January 2012, 10:22 PM   #35
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Quote:
Originally Posted by Brett View Post
That's the loudest I could stand being near them with a tone, which I would equate to an average level for dynamic content.
Yeah, hard to say and it depends on the tone. I can stand a lot louder tone at 220Hz than at 1000Hz, that's for sure! But I do find that I can play music at a higher average level than most tones, so agree with you. Just hard to say. Do you think that puts you in the 5-10V range, then?
  Reply With Quote
Old 20th January 2012, 10:24 PM   #36
diyAudio Member
 
revboden's Avatar
 
Join Date: Feb 2011
120Hz
Sub 5.62vac
Mains .556vac

220hz
sub .9vac
mains 1.4vac

Last edited by revboden; 20th January 2012 at 10:34 PM.
  Reply With Quote
Old 20th January 2012, 10:24 PM   #37
forr is offline forr  France
diyAudio Member
 
forr's Avatar
 
Join Date: Dec 2004
Location: Next door
Quote:
Originally Posted by weltersys View Post
Unfortunately, the integration time on multimeters is far to slow to read musical peaks with any detail or accuracy.
My peak-hold capable multimeters are three Metrix MX57EX ASYC II and a Fluke 867. The Metrix can detect peaks of duration below 1/100000 s.

Click the image to open in full size.

With a standard multimeter for calibration at 200 Hz, using a sound card, a stepped attenuator, recording and analysis software, it may certainly be possible to do a very fine analysis of what goes really to your speakers.






  Reply With Quote
Old 20th January 2012, 10:27 PM   #38
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
That's great, do it! If you find your peak values this way, please divide by 4 (-12dB) and contribute to the poll, thanks.
  Reply With Quote
Old 20th January 2012, 10:37 PM   #39
diyAudio Member
 
revboden's Avatar
 
Join Date: Feb 2011
Pano,
do you want just the mains mesurment in the poll, or vote twice with both measurements?
  Reply With Quote
Old 20th January 2012, 10:48 PM   #40
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
If you can vote twice, do it. I don't know if the poll will let you. Choose the one you want to post most and do it first, in case you can't do the other.

Thanks for your input!
  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
LM3875 power up test.. and it crackles w/o speakers attached? Keyoke Chip Amps 9 2nd March 2012 01:39 AM
how to test chokes for current and voltage speakerfritz Tubes / Valves 10 20th October 2010 11:32 AM
Aleph 30 problem - half of power supply voltage on speakers output yoke Pass Labs 18 15th March 2009 05:18 PM
How to test speakers? zaydenam Multi-Way 2 27th August 2008 01:02 PM
Test speakers? Ryssen Multi-Way 3 2nd March 2004 10:54 PM


New To Site? Need Help?

All times are GMT. The time now is 05:17 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2