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Running 3 amps, Remote Wire..
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<blockquote data-quote="Prowler573" data-source="post: 2152294" data-attributes="member: 561023"><p>Remote turn-on lead:</p><p></p><p>When you're looking at running more than 2 accessories from the HU's remote activation output you can potentially be looking at trouble. The amount of voltage present in that particular output for most head units is measured in milliamps. If you're going to ask that circuit to activate three or more items then your best best would be to get a simple Single Pole, Single Throw 30amp relay (available for around $5 or so pretty much anywhere that sells electronic components...Radio Shack, Wal-Mart, any auto parts store will have them, etc)</p><p></p><p>Use the head unit to activate the relay and then have the relay serve remote turn-on duties. This will prevent overloading and burning up the remote output on your HU ($5 is cheap insurance IMO to keep from damaging your deck)</p><p></p><p>Daisy-chaining RCAs:</p><p></p><p>You technically <em>can</em> do what you've proposed but it can possibly be problematic as well. Do any of those three amps have any sort of processing on their RCA outputs at all? If so is that processing defeatable? If it isn't the signal being output from those particular connections may or may not be appropriate for the next amp in line depending on its intended usage.</p><p></p><p>Additionally going this route will completely eliminate any possibility of having any usable fadar function as you'd be feeding all three amps from a single output from the HU so whatever output you use (front, rear, whatever) is the ONLY signal those amps will be able to use.</p><p></p><p>Just my $0.02</p></blockquote><p></p>
[QUOTE="Prowler573, post: 2152294, member: 561023"] Remote turn-on lead: When you're looking at running more than 2 accessories from the HU's remote activation output you can potentially be looking at trouble. The amount of voltage present in that particular output for most head units is measured in milliamps. If you're going to ask that circuit to activate three or more items then your best best would be to get a simple Single Pole, Single Throw 30amp relay (available for around $5 or so pretty much anywhere that sells electronic components...Radio Shack, Wal-Mart, any auto parts store will have them, etc) Use the head unit to activate the relay and then have the relay serve remote turn-on duties. This will prevent overloading and burning up the remote output on your HU ($5 is cheap insurance IMO to keep from damaging your deck) Daisy-chaining RCAs: You technically [I]can[/I] do what you've proposed but it can possibly be problematic as well. Do any of those three amps have any sort of processing on their RCA outputs at all? If so is that processing defeatable? If it isn't the signal being output from those particular connections may or may not be appropriate for the next amp in line depending on its intended usage. Additionally going this route will completely eliminate any possibility of having any usable fadar function as you'd be feeding all three amps from a single output from the HU so whatever output you use (front, rear, whatever) is the ONLY signal those amps will be able to use. Just my $0.02 [/QUOTE]
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