alpine cva-1003 rca’s

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=16138
Printed Date: July 19, 2025 at 2:39 PM

Topic: alpine cva-1003 rca’s

Posted By: 91civicdx
Subject: alpine cva-1003 rca’s
Date Posted: July 10, 2003 at 7:08 PM

my friend just got this in-dash t.v. for his car and we r planing on running an alpine v12 for his highs and a directed 1100d amp for his sub. are problem is that his t.v. only has one output of rca's for the rear sub. my question is that if i get a crossover to split the rca's will it be all bass do to the input is the rear sub rca's?
thanks
carlos

Replies:

Posted By: esmith69
Date Posted: July 10, 2003 at 8:38 PM

The output can be set to either a full-range signal or a low-pass, level/phase adjustable subwoofer-type signal. What you'lll do is make sure it's set to the full-range output, and then just remember that if/when you fade the volume to the front of the vehicle it's going to affect the volume for the entire system (since the preamp outputs are only for the rear channels).

here's the brief instructions in case you don't have the user's manual anymore

1. press and hold the setup button for 2 seconds

2. press the preset 6 button to set to the "SYSTEM" setting mode. Press the preset 6 button again to select the "SUB W." mode

3. Press the DWN or UP button to select subwoofer on to off

4. Press the setup button to return to the normal mode.

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Ethan
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"Patience, persistence, and perspiration make an unbeatable combination for success"
Donate to the12volt.com

Posted By: 91civicdx
Date Posted: July 11, 2003 at 3:51 PM

thanks esmith69 what kind of crossover do u recoment

Posted By: esmith69
Date Posted: July 11, 2003 at 5:39 PM

Actually I'm almost positive the Alpine 4-channel amplifier will have a pair of full-range preamp outputs, which you would connect to the DEI amp's RCA inputs.

Since your head unit only has one set of preamp outputs, you would normally need to use a y-adapter for each of the two input channels coming from the head unit, to give all 4 channels of the amplifier signal inputs. However, this alpine amp has an input selector switch which lets you use just one set of RCA inputs and still have all 4 channels being output. You lose the ability to fade front to rear but that's not really that big of a deal in my opinion.

Because both amplifiers will be getting a full-range signal input, you'll just need to make sure you adjust both amps' crossover settings accordingly.

-------------
Ethan
-----
"Patience, persistence, and perspiration make an unbeatable combination for success"
Donate to the12volt.com