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07-19-2006, 12:17 PM
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#1
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Low Bitrate
Join Date: May 2005
Posts: 58
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Umm... how do I power my amps?
I went to a car audio store to get my amps installed and I told the guy that I will be using a carputer instead of the factory hu. Then he asked me how will it power on. That was a good question. How do I power the amps? Im using a laptop and a external sound card.
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07-19-2006, 12:21 PM
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#2
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Constant Bitrate
Join Date: May 2005
Location: Monterey, CA
Posts: 223
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I think he means how are you gonna turn on the amps. I use my DC-DC power supply to send the remote turn on.
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07-19-2006, 12:38 PM
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#3
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FLAC
Join Date: May 2005
Location: Conyers, GA
Posts: 1,417
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I just took a wire off the ACC wire behind the radio, ran it through a switch so I could turn the amps off when I don't want them. That way they'll turn on with the key in ACC, or you can keep them off.
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07-19-2006, 12:43 PM
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#4
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Constant Bitrate
Join Date: May 2005
Location: Monterey, CA
Posts: 223
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If you use the ACC line, then you might get that thump when the computer boots. The DC-DC has delay to avoid that. It works well for me.
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07-19-2006, 12:58 PM
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#5
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Newbie
Join Date: May 2006
Location: San Jose, CA
Posts: 34
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Depending on how he wires his laptop he may not be using a DC-DC PSU. psptibby is right. You will most likely get a thump through out all the speakers connected to the amp when the PC boots. So I would also suggest using the DC-DC PSU with the 20 second delay. If you aren't going that route then use the 12V wire on the ACC side of the key.
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07-19-2006, 01:03 PM
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#6
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Maximum Bitrate
Join Date: Aug 2005
Location: Anaheim Hills, Ca
Posts: 847
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Two options...
1. Find a switched power source in your car that turns on and off when you turn the key. This is also known as an ignition wire. With this setup, you will need a delayer installed so that you don't get that pop sound when your computer boots up. You can get a pop stopper from david navone's website.
2. Use the amp turn on wire off of your power supply. Almost all power supplies have this wire comming out of it. They are usually set to a small delay that will prevent turn on pops.
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07-19-2006, 01:50 PM
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#7
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Low Bitrate
Join Date: May 2005
Posts: 58
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Quote: Originally Posted by Jahntassa
I just took a wire off the ACC wire behind the radio, ran it through a switch so I could turn the amps off when I don't want them. That way they'll turn on with the key in ACC, or you can keep them off.
That could work, but the guys thats gonna install my liliput said they will use that ignition acc power for the screen. So i guess i will have to look into the dc-dc option.
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07-19-2006, 01:52 PM
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#8
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Constant Bitrate
Join Date: May 2005
Location: Monterey, CA
Posts: 223
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You could slipt the acc line.
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07-19-2006, 01:55 PM
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#9
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Low Bitrate
Join Date: May 2005
Posts: 58
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Basically I will be running the 2 amps and the liliput. I was told by a guy at compusa that has a carputer to get a .5 farad cap, an inverter, and a surge protector and run everything off there. Then a 1.5 farad for my amps.
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07-19-2006, 01:58 PM
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#10
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Constant Bitrate
Join Date: May 2005
Location: Monterey, CA
Posts: 223
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Well i doubt the guy has as much experiance with carpc's as guys on here.. I would get a DC-DC ps. You get a lot more features and dont have to mess with a inverter and all that.
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07-19-2006, 02:04 PM
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#11
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Low Bitrate
Join Date: May 2005
Posts: 58
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I will have to research on the dc-dc.... i thought they were exclusive for pc's not laptops.
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07-19-2006, 02:04 PM
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#12
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MySQL Error
Join Date: Dec 2004
Location: Los Angeles Ca
Posts: 3,703
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Quote: Originally Posted by 3onDubs
Two options...
1. Find a switched power source in your car that turns on and off when you turn the key. This is also known as an ignition wire. With this setup, you will need a delayer installed so that you don't get that pop sound when your computer boots up. You can get a pop stopper from david navone's website.
2. Use the amp turn on wire off of your power supply. Almost all power supplies have this wire comming out of it. They are usually set to a small delay that will prevent turn on pops.
yup...
welcome back dubs. how was the honeymoon?
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My Car Pc Install
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07-19-2006, 02:06 PM
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#13
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Constant Bitrate
Join Date: May 2005
Location: Monterey, CA
Posts: 223
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Didn't realize you where using a laptop. But you could wiring the power button to the dc-dc and probably the power too depends on the power requirment for the laptop.
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07-19-2006, 02:12 PM
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#14
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MySQL Error
Join Date: Dec 2004
Location: Los Angeles Ca
Posts: 3,703
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just wire off the the acc line and put a delay on it to avoid the pop.
__________________
New System in progress:
M10k
Phaze TD1500 ~> Dynaudio MD130
Phaze TD1500 ~> Seas g18rnx/p
Zapco Ref 500.1 ~ 12" tc-9
Behringer DCX2496 ~ Envision Electronics psu
Transflective Xenarc
My Car Pc Install
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07-19-2006, 02:14 PM
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#15
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Low Bitrate
Join Date: May 2005
Posts: 58
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Its a ibm 570e... not a new machine but does the job. It says 16v---3.36A on the bottom of the base
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