car amp usable as sub-amp? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 10th April 2003, 12:53 PM   #1
diyAudio Member
Join Date: Feb 2003
Location: Leuven
Default car amp usable as sub-amp?

I've seen a second hand car poweramp (2x200W) for 69$.

Can I use this amp for a subwoofer?

Do I need some extra electronics? filter?
  Reply With Quote
Old 10th April 2003, 11:44 PM   #2
diyAudio Member
mikee12345's Avatar
Join Date: Nov 2002
Location: NZ
it may be rated 200watts at 5% THD

u mite get only 100watts at 0.5% THD(like my amp which is 0.01% THD at half the Rms rating)

running a car amp in house = 240v/110V ---14v (or similar)convertor

= expensive

some ppl use batteries but they suck them dry before the charger can charge it fast enough.

computer power supplies do it,but in tiny amounts!

u could build a power supply for lots of money $ urself,switch mode supply.

if u live in US just buy a partsexpress plate amp -cheap

if u live outside US ur unlucky,like me.high shipping.


OR do u mean run as a sub amp in your car????

if so, run your sub off it. if high notes come out, likevoices,u know u need a filter,an active Low pass filter.

dont pay lots of money $$$ for a low pass filter.
probably crossover at 70hz is good or lower.:-D

u can either buy a kit,or a working filter.
  Reply With Quote
Old 11th April 2003, 12:55 AM   #3
Kay is offline Kay  Germany
diyAudio Member
Join Date: Nov 2001
Location: Emden
You can do what you want, of course,

but do you think the power rating 2x200W is correct?

best regards
best regards
  Reply With Quote
Old 11th April 2003, 05:55 AM   #4
diyAudio Member
Join Date: Feb 2003
Location: Leuven
Ok, that was a bad idea

Hadn't thought about that 12V...
  Reply With Quote
Old 12th April 2003, 05:29 PM   #5
CarMan is offline CarMan  United States
diyAudio Member
Join Date: Mar 2003
Location: Reno
Yes, DC instead of AC. If you can get an AC-DC converter that is rated at as many amperes as the car amplifier is rated you can use the power fully. I did some looking into this a few years back and I think the power supply I needed for my 2x150rms (@ .05%THD, I did check first) was going to cost me something like $180. Unless they are a lot cheaper now...
  Reply With Quote


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
Cheap sub usable? dhias Subwoofers 1 28th May 2009 02:56 AM

New To Site? Need Help?

All times are GMT. The time now is 02:22 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2