General Discussion General discussion about all things car audio, from pioneer, orion, alpine and eclipse.

Measuring Frequency

Old 10-06-2006, 10:10 AM
  #1  
50 Watt CAFz'r
Thread Starter
 
Join Date: Apr 2004
Posts: 85
Measuring Frequency

Anyone know if a device is available to measure frequency output on an amp. I have an amplifier that I would like to set at 90 hz. lp but the amp has no marking for that freq. only a from 30-350 hz. I can do some math and go halfway and halfway to reduce the numbers but feel more comfortable with true measures instead of guessing if I am anywhere near close to the freq. on the dial. Any input would be appreciated. Thanks
SPLHertz is offline  
Old 10-06-2006, 10:24 AM
  #2  
50 Watt CAFz'r
 
M.C. Ryan's Avatar
 
Join Date: May 2004
Posts: 467
Well, you could play pink noise and have an RTA in the car, adjust the x-over until you see it start to drop off at 90 hz...?
M.C. Ryan is offline  
Old 10-06-2006, 11:39 AM
  #4  
4000 Watt CAFz'r
iTrader: (3)
 
Haunz's Avatar
 
Join Date: Jun 2002
Posts: 4,218
if you had an RMS meter you can measure output versus tone frequency to determine when it starts to drop off.... many also have frequency counters... my fluke 111 was only like $200 and handheld oscopes can be found on ebay for alittle more...

anyway, make sure you measure using a non inductive load similar to the DC resistance of your subs or the measurement won't mean much.....
Haunz is offline  
Old 10-06-2006, 12:19 PM
  #5  
500 Watt CAFz'r
 
SweetnLow91SC's Avatar
 
Join Date: Mar 2005
Posts: 883
Well. . . you could use a LOC network to drop the amp output level to line level, then plug it into the line in of the RTA. then feed the amp pink noise..... and just watch the display while you adjust.
SweetnLow91SC is offline  
Old 10-06-2006, 01:56 PM
  #6  
50 Watt CAFz'r
 
smpl_gy's Avatar
 
Join Date: Jul 2006
Posts: 322
Check out Stereo System Test & Analysis Tones by Nino B.
This website offers free individual test tones you can download and burn...Choose whatever frequency / frequency range you want, burn it, play it and tune accordingly...
smpl_gy is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
87Accord
General Discussion
15
07-06-2011 01:25 PM
hott-nix
Car Audio Technical Discussions
8
06-05-2007 07:19 PM
Sterling
General Discussion
17
03-19-2005 12:09 PM
Fishbone
Enclosure Design & Construction Help
6
03-10-2005 12:31 PM
Muckaluck
General Discussion
15
06-27-2004 02:49 AM


Thread Tools
Search this Thread
Quick Reply: Measuring Frequency


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.