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Bench test setup

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=24715
Printed Date: March 29, 2024 at 10:40 AM


Topic: Bench test setup

Posted By: Autos4U
Subject: Bench test setup
Date Posted: January 16, 2004 at 4:23 PM

I am sorry if this has been discussed. I searched various ways to describe my question with no results.

Here goes. I have built a test bench to test sub enclousures, amp performance, speakers, etc...

I am currently powering a head unit and 2 amps (one 4 channel and one MONO block) at about 800W RMS total. I am running these from a deep cycle marine battery, connected to a 6a battery charger.  I am never seeing over 12.8V under load,  I want to add a wall power supply   (13.8v) to replace the batery charger.

Do I need to purchase a 30a + if I plan to keep the battery connected, just to keep it charged? I can't remember if the battery will carry the current draw and a power supply will recharge the battery from wall voltage like an alternator. If this was the case, could I use  something like a 13.8vdc, 15a (continuous) and get away with it? It would be much cheaper.

If anyone has tried this, let me know the results.

Thanks!

Tucker

Autos For You, Inc.




Replies:

Posted By: dcgc
Date Posted: January 16, 2004 at 7:57 PM
Myself I wouldn't use the wall socket, the charger would be all I would want. If you decide to do this that way I suggest you get yourself a fire extinquiser, quick absorbant compound (for battery acid), a cordless phone charged and ready, and last but not least, Your local fire department number.

Seriously, why can't you just have the 13.8 volt AC adapter wired thru a 50A fuse to your amp? no need for battery.


-------------
2003 Silverado Ext. cab
Kenwood mp922
Kenwood kgc6042a EQ
JL Audio xr650-csi
MB Quart PSC 213
JL Audio 300/4
pair of JL Audio 12w6v2
JL Audio 1000/1




Posted By: Basscoholic23
Date Posted: January 16, 2004 at 8:28 PM
I have to agree with dcgc with this one. Thats what i'm using for my bench test...... https://www.etronics.com/product.asp?stk_code=pyrps52kx&store=&catid=4071




Posted By: Autos4U
Date Posted: January 20, 2004 at 7:38 AM

Thanks for the input.

Thats what I was trying to find out. If  I had to go with a 50a power suppy or if I could get away with a smaller one if I used a battery along with it.

I don't see if the bench was only hooked up as I was using it, how it would be any different than an alternator recharging the battery when the car is on as far as fire hazards.

But oh well,  a power supply looks like the easier way to go anyway.

Thanks,

Tucker





Posted By: oldencnile
Date Posted: February 04, 2004 at 2:28 AM

Would that 40/50 (peak) unit power an 1100Watt RMS 1500 Watt Peak Directed audio Amplifier? I'm running a diamond audio TDX 15" sub, and would like to have constant power to it, I figured I'd need at least 100 amps (seeing how my 91 Probe with it's 60 amp peak alternator can't handle it) Whatdya all thinK Thanks!

-Jordan





Posted By: geepherder
Date Posted: February 04, 2004 at 10:00 AM
No, do the math and it'll come up short.  It'd play fine at moderate volumes, but when you decide to crank it, the power supply will fall short.

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My ex once told me I have a perfect face for radio.




Posted By: customsuburb
Date Posted: February 04, 2004 at 3:49 PM
My local car audio dealer Car-FI seams to have two power supplys that are rack mounted in their demo room that look like seperate amps in a home theater system. I know these are definitely power supplies though because they already have two Rockford amps to power their subs. You might want to call them and see what their setup is. Heres the link to their site: https://www.car-fi.com/mobile_video/mobile_video.html




Posted By: customsuburb
Date Posted: February 04, 2004 at 3:54 PM
ohh yeah ,you probobly need area code: 417-882-5511





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