Peak current delivery measurements on amps. - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

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 11th May 2006, 08:53 AM   #1
beppe61 is offline beppe61  Italy
diyAudio Member
 
Join Date: Feb 2005
Location: torino
Default Peak current delivery measurements on amps.

Dear Sirs,


I read, but I cannot remember where, of a new standard procedure for assessing the max peak current delivery of a car audio power amp.
Foolishly I did not save the link, because I think that this is very important datum that can say how anamp can drive demanding loads (i.e. low impedance and sensitivity).
Moreover I think it would be very advisable that the same procedure should be adopted for evaluating any audio power amp.
Anyone has read that article ?

Thank you so much.
Kind regards,

beppe
  Reply With Quote
Old 11th May 2006, 08:59 AM   #2
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
It should be quite easy. Drive a square wave or impulse into the amp loaded up and compare output vs input.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 11th May 2006, 09:04 AM   #3
beppe61 is offline beppe61  Italy
diyAudio Member
 
Join Date: Feb 2005
Location: torino
Quote:
Originally posted by richie00boy
It should be quite easy.
Drive a square wave or impulse into the amp loaded up and compare output vs input.
Dear Sir,

thank you very much for your kind and valuable reply.
As I said, I found very interesting that after having read how is important this value of the "max peak current" available from an amp someone has gone through the hassle to fix a standard procedure of measurements.
But I cannot find the link again.

Thank you very much again.
Kind regards,

beppe
  Reply With Quote
Old 11th May 2006, 09:22 AM   #4
beppe61 is offline beppe61  Italy
diyAudio Member
 
Join Date: Feb 2005
Location: torino
At last, and maybe, I have found it:

http://carsound.com/articles/publish/printer_293.shtml

Any opinions ?
It seems quite interesting to me.

Kind regards,

beppe
  Reply With Quote
Old 11th May 2006, 10:00 AM   #5
diyAudio Member
 
Join Date: Jul 2005
Location: North Derbyshire
Quote:
Originally posted by beppe61
At last, and maybe, I have found it:

http://carsound.com/articles/publish/printer_293.shtml

Any opinions ?
It seems quite interesting to me.
Why not use the honest RMS ratings that decent amplifiers have used since before WWII? - why invent another confusing 'standard', no doubt simply because it gives inflated values compared with RMS?.
__________________
Nigel Goodwin
  Reply With Quote
Old 11th May 2006, 10:22 AM   #6
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
I see your point, but I think it's valid to look at impulse responses because they will tell you a short term dynamic response. Granted, with the 20kHz upper bandwith limit and steep roll-off above that of CD, and modern pop recordings, there is little dynamics, but it's still worth looking at IMO.
__________________
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more.
  Reply With Quote
Old 13th May 2006, 12:29 PM   #7
micb is offline micb  United Kingdom
diyAudio Member
 
Join Date: Aug 2004
Location: UK
CES 2006 is not that a tough rating as it is measured at 14.4v with 1% THD....

You will often see 10-20% less power at 12v.
  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
Peak Current in SMPS microsim444 Power Supplies 6 3rd January 2009 03:14 AM
83 rectifier peak repetitive current? plovati Tubes / Valves 1 27th June 2007 09:01 PM
Peak repetitive forward current?? Nixie Parts 8 28th November 2006 04:44 PM
Sanken 2SC2922 - max peak current delivery. beppe61 Parts 3 26th January 2006 11:56 AM
Amplifier peak current YUTK Solid State 2 14th July 2005 05:51 AM


New To Site? Need Help?

All times are GMT. The time now is 08:56 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