I need a DB meter please. - diyAudio
Go Back   Home > Forums > Design & Build > Equipment & Tools

Equipment & Tools From test equipment to hand tools

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 29th December 2009, 06:19 AM   #1
diyAudio Member
 
Join Date: Jun 2009
Send a message via MSN to gadgeteer123
Default I need a DB meter please.

Does anyone have a DB meter I can buy or trade for that can read to at least 150db??
  Reply With Quote
Old 29th December 2009, 08:19 AM   #2
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Decibels are ratios, not units
Decibel - Wikipedia, the free encyclopedia
  Reply With Quote
Old 29th December 2009, 08:20 AM   #3
diyAudio Member
 
Join Date: Jun 2009
Send a message via MSN to gadgeteer123
??- I'd just like one that can read that loud so i can test my systems at home.
  Reply With Quote
Old 29th December 2009, 08:25 AM   #4
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
You mean a sound pressure meter (SPL) like these, some are quite cheap new,

Your Search Results | CPC

Anything over 95 to 100 db is "loud" for a domestic system... 150 db... that's like standing a couple of meters from a jet engine with the afterburners on... and you would be deaf
  Reply With Quote
Old 29th December 2009, 08:26 AM   #5
dhaen is offline dhaen  Europe
diyAudio Moderator Emeritus
 
dhaen's Avatar
 
Join Date: Jun 2002
Location: U.K.
Are you talking about sound pressure? In which case dBA is a common ratio.
I really think you should look up the meaning and relevance of your question:
Sound pressure - Wikipedia, the free encyclopedia
Or in simpler terms:
About Decibels (dB)
Then think about the value you have asked for...
  Reply With Quote
Old 29th December 2009, 08:26 AM   #6
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Look at these examples,
Sound pressure - Wikipedia, the free encyclopedia
  Reply With Quote
Old 29th December 2009, 08:32 AM   #7
diyAudio Member
 
Join Date: Jun 2009
Send a message via MSN to gadgeteer123
I am talking about the db rating they use in SPL competitions, and my stereo can hit 140-145db so thats why i need it to go atleast that loud.

Last edited by gadgeteer123; 29th December 2009 at 08:43 AM.
  Reply With Quote
Old 29th December 2009, 08:41 AM   #8
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Quote:
Originally Posted by gadgeteer123 View Post
I am talking about the db rating they use in SPL cometitions, and my stereo can hit 140-145db so thats why i need it to go atleast that loud.
Pardon
  Reply With Quote
Old 3rd January 2010, 03:56 PM   #9
tvrgeek is offline tvrgeek  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Md
If you hit 145 dB, don't worry, you are probably half deaf already. 135 dB peaks is enough to cause irreversible damage with half an hour. ( Please refer to the OSHA site) Just because you can jump off a cliff, does not mean you need to.

I believe they use calibrated instrumentation mics at the competitions. They cost more than your stereo and car but together. But if you must, just back off a few feet using a generic cheap SPL meter and do the math.
  Reply With Quote
Old 12th January 2010, 02:46 AM   #10
dangus is offline dangus  Canada
diyAudio Member
 
Join Date: May 2004
Location: Vancouver Island
Low frequencies are much less harmful than 1 kHz. The weighting curves reflect that. Otherwise you'd be deaf from a slammed car door or swimming underwater.

Some strain gauge pressure sensors can be used as microphones up to very high SPLs. I remember reading that in a Sensym application guide. 150 dB SPL is only about 0.1 PSI. 170 dB is about 1 psi.

If you have one lying around, try the sensor from a barometer or altimeter, a MAP sensor from a car EFI system, or one salvaged from some medical instrument.
  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
db meter speedie Equipment & Tools 2 22nd September 2009 01:55 AM
db or vu meter branet Parts 3 9th May 2009 12:14 PM
Leader LMV-1815 2 Ch Auto dB Lever Meter Mikewong Analogue Source 0 19th July 2007 07:27 AM
About DB Meter MatrixElect Swap Meet 1 12th January 2005 10:47 PM
About DB Meter MatrixElect Multi-Way 3 12th January 2005 04:54 PM


New To Site? Need Help?

All times are GMT. The time now is 01:46 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