Car stereo cheap alternative to big hifi systems - Page 2 - 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 4th October 2003, 04:18 AM   #11
diyAudio Member
 
li_gangyi's Avatar
 
Join Date: Jun 2003
Location: Woodlands Circle
Cummon man...a crummy 1A wun kick it..especially for bass...you need at least 20A or something bigger...seend as much as 100A being used...
__________________
Kids in the back seat cause accidents...Accidents in the back seat cause kids...
  Reply With Quote
Old 5th October 2003, 08:04 PM   #12
diyAudio Member
 
Matttcattt's Avatar
 
Join Date: Feb 2003
Location: Bristol
Quote:
Originally posted by li_gangyi
Cummon man...a crummy 1A wun kick it..especially for bass...you need at least 20A or something bigger...seend as much as 100A being used...
Rod elliot said his power supply should be able to go up to 500A with enough output devices. Cool :P
__________________
If it aint broke, don't fix it. If it is broke, fix it.
If you can't fix it, take it apart and see how it "worked".
  Reply With Quote
Old 6th October 2003, 06:53 AM   #13
diyAudio Member
 
li_gangyi's Avatar
 
Join Date: Jun 2003
Location: Woodlands Circle
Yeah...and if anyone needs 3055s..gimmi a mail or a PM...I got a few here...
__________________
Kids in the back seat cause accidents...Accidents in the back seat cause kids...
  Reply With Quote
Old 6th October 2003, 08:33 AM   #14
jake is offline jake  Australia
diyAudio Member
 
Join Date: Aug 2003
Location: Brisbane, Australia
why not get an electriction to wire it into your electricity (i.e. wire it into the mains). It shouldnt cost that much really (maybe it does?). just a thought.

____
Jake
____
  Reply With Quote
Old 6th October 2003, 08:49 AM   #15
Jennice is offline Jennice  Denmark
diyAudio Member
 
Join Date: Jun 2003
Location: Planet Earth
Default 12 in house?

Hi Jake,

I don't know about your local laws, but here in DK you won't be able to have anyone legally install 12V along with the "ordinary" power line.

Apart from legal issues, it's pointless to make the 12V gneration as part of the house's electrical sytem. The long leads from source to appliance will create immense losses (and be terrible inductances, considering that a lot of car stereo equipment has SMPSU's built in. (especially the power-amp's)

Generally, you will need to be carefull if you use a PC PSU. It can indeed deliver a lot of current (although some types have the most juice at 5V), but powering a SMPS from a SMPS can (in worst case) lead to faults in one or both components, mainly during turn-on and turn-off.
During turn-on, some car power amps draw VERY high peak currents, which may stress or damage your PC PSU.
During turn-off, your PC PSU may have temporary states of high output impedance. The SMPS of a car power amp may not protect against (negative) voltage transients emmitting from the SMPS to the PC PSU. At work I had this problem, where one SMPS fried another one during certain power-down conditions.

Jennice
__________________
I get paid to break stuff. My g/f gets paid to play with children. Life is good.
  Reply With Quote
Old 6th October 2003, 08:59 AM   #16
diyAudio Member
 
li_gangyi's Avatar
 
Join Date: Jun 2003
Location: Woodlands Circle
I have tried shorting a PC smpsu...it will just shut itself off...in worst case senarios...the fuse should be adequate to protect you...if you are feeling unsafe...build a BIG linear PSU~!!!
__________________
Kids in the back seat cause accidents...Accidents in the back seat cause kids...
  Reply With Quote
Old 7th October 2003, 07:48 AM   #17
jake is offline jake  Australia
diyAudio Member
 
Join Date: Aug 2003
Location: Brisbane, Australia
hey guys

car cigarette lighters only provide either around 20A or 60A (I can t remember 4 sure) This is all the stereos are wirred to.

_____
Jake
_____
  Reply With Quote
Old 7th October 2003, 08:58 AM   #18
diyAudio Member
 
uvodee's Avatar
 
Join Date: Aug 2002
Location: Washington
Default interesting

Back in the very early 90' s I had fitting transformers installed in the distribution box while still living in Belgium These transfo's took 220 volt AC down to 12 v DC.

I did this in order to install the then very popular 12 volt halogen lighting. it took away the wall warts and even ceiling warts......

worked just fine and installing it was a piece of cake.
  Reply With Quote
Old 7th October 2003, 09:19 AM   #19
diyAudio Member
 
purplepeople's Avatar
 
Join Date: Mar 2003
Location: London, Ontario, Canada
Hey, how about those big halogen light wall warts. They give out 12VAC and 6A. Shouldn't that be enough for a GC monoblock. You could go to IKEA, get the cheapest tracklight for the transformer, throw the hardware in the future use pile, and still have 3 spare bulbs for your current tracklights.

With two of them, each one DC'ed with a bridge into a 317/337 or 78xx/79xx to get a just under +/-12VDC supply?

:)ensen.
__________________
Those who claim to be making history are often the same ones repeating it.
  Reply With Quote
Old 9th October 2003, 07:54 AM   #20
jake is offline jake  Australia
diyAudio Member
 
Join Date: Aug 2003
Location: Brisbane, Australia
is it just me or are ppl in this forum talking about garden lighting. guys, dont fill this room with rubbish, weve already established that we needj around 20-100 AMPs.

____
Jake
____
  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
List your favorite(cheap) test tools for audio systems clm811 Equipment & Tools 80 18th October 2010 09:15 AM
Cheap ERS Cloth alternative? zBuff Parts 1 16th May 2008 06:52 AM
Cheap alternative to EF86 Shoog Tubes / Valves 29 8th January 2008 11:15 AM
stereo hifi project with fm reciever gideon Chip Amps 2 24th October 2005 07:38 PM


New To Site? Need Help?

All times are GMT. The time now is 01:44 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