best way to install subwoofer and amp?
Thread Starter
Junior Member
Joined: Dec 2009
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c350
best way to install subwoofer and amp?
i've been doing a lot of research and still a little confused about some of the step. what is the best way to get power to the amp?
some people said run it to the fuse box and the original way is run it to the battery? which way would you do it?
the part where im really confuse at is tapping into the two rear speakers? whats the reason for doing that? so the aftermarket sub will work?
where do you run the remote wire from the amp to?
and why do i need the RCA hi to low converter? when tapped into the two rear speakers, i wire the two negative and two positive together right? then wire them to the high to low converter and plug the male end of the converter to the amp?
if anyone can help id appreciate it. thanks
some people said run it to the fuse box and the original way is run it to the battery? which way would you do it?
the part where im really confuse at is tapping into the two rear speakers? whats the reason for doing that? so the aftermarket sub will work?
where do you run the remote wire from the amp to?
and why do i need the RCA hi to low converter? when tapped into the two rear speakers, i wire the two negative and two positive together right? then wire them to the high to low converter and plug the male end of the converter to the amp?
if anyone can help id appreciate it. thanks
Member
Joined: Jan 2009
Posts: 238
Likes: 2
From: Montreal, Canada
2011 E550 Coupe
The rear SAM module has a maximum of 30A if I recall correctly and both cigarette lighters are on it as well as other things, it will tap out very quickly unless you have a very small amp and subs usually require larger amps. Best to run separate power wire to the battery, sized as per the amplifier recommendations.
You tap into the rear speakers for a high level input to your amp as no RCA's are available, note you need to buy an amp that will accept a high level input otherwise you will need the high to low converter.
The amp turn on signal would normally come from the head unit but that would be a pain, you can simply wire it to an accessory wire in the rear SAM, this will turn the amp on when you start the car however it will not turn off when you turn off the radio and keep the car running.
You tap into the rear speakers for a high level input to your amp as no RCA's are available, note you need to buy an amp that will accept a high level input otherwise you will need the high to low converter.
The amp turn on signal would normally come from the head unit but that would be a pain, you can simply wire it to an accessory wire in the rear SAM, this will turn the amp on when you start the car however it will not turn off when you turn off the radio and keep the car running.
Thread Starter
Junior Member
Joined: Dec 2009
Posts: 66
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c350
newbie question.. what is the rear SAM?
is this the high to low converter?
http://www.amazon.com/GSI-GGLOC2-Hig.../dp/B001O0MT54
how do i know if the amp has high level input? and what is high level input?
so from what you are saying..
run the power to the battery
ground wire to any ground metal in the trunk
tap into the two rear speakers and then run them to a hi low converter and then run the converter to the amp?
what about the remote wire? where does that go?
is that all?
thanks
is this the high to low converter?
http://www.amazon.com/GSI-GGLOC2-Hig.../dp/B001O0MT54
how do i know if the amp has high level input? and what is high level input?
so from what you are saying..
run the power to the battery
ground wire to any ground metal in the trunk
tap into the two rear speakers and then run them to a hi low converter and then run the converter to the amp?
what about the remote wire? where does that go?
is that all?
thanks
