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09-13-2010, 06:03 PM | #23 |
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technic, do I need to pm you to get on "the list"? |
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09-13-2010, 06:59 PM | #24 | |
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09-13-2010, 11:01 PM | #25 |
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Count me in too!
I'm guessing this harness will allow me to connect an aftermarket amp AND power interior speakers without any cutting/custom work?
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09-14-2010, 02:14 AM | #26 | |
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You'll never be able to pull more than 1/2 the battery's reserve rating long enough to blow a fuse with that same rating. For instance, a battery with a reserve capactity if 100Ah should be fused your main fuse should be 50A, no matter the amount of current your amps can pull. It was weird when i heard it but it makes sense and it's never done me wrong. |
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09-14-2010, 02:15 AM | #27 |
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09-14-2010, 02:16 AM | #28 |
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09-14-2010, 03:35 AM | #29 | |
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Now since audio is transient that means the current draw is changing very rapidly. It is highly unlikely that you would ever draw the max rating of any amplifier all at once because of the transient nature of music. The only time it would be remotely possible is if you were playing pink noise or sine waves for long periods of time at very high volumes. With music material, the transient peaks are too short to cause an large demand for an extended period of time. The fuse probably would have enough time to blow even if there was an overcurrent condition due to a transient peak however, you probably wouldn't want to allow the amp to see that on a regular basis because you will eventually burn out the output devices. Typically the fuse will blow on a fault condition like a short or an amp failure which causes an overcurrent condition at the amplifier's power input. I have also ran smaller than usual fuses on some high powered systems. In my last, the recommended size for my amps were 125A each amp of which I had 2. The main circuit breaker at my battery was 150A. It never did trip because the instantaneous demand was always a lot lower than the max fuse rating of the amp. Still, even though it would take a fault condition to burn that fusible link in the OEM distribution block, it would be nice to know what it's rated for. I'm guessing its somewhere between 50 and 70A since the connector is made for a 6 or 8 AWG conductor.
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09-14-2010, 08:24 AM | #30 | |
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Think about this, it takes twice the current rating of a fuse to pass through it for two seconds before it will blow. And that's a normal "fast blow" type fuse. A slow blow fuse needs to see double the current for even longer. That's why you fuse at half the reserve capacity. As you said, music is transient so there is no need to ever run fuses over 60A or so. I've never run a fuse larger than 60A and I've never blown one. Ever. And you know i've run some serious power. Plus it keeps your car safer since less current will have to flow to blow the main fuse. |
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09-14-2010, 11:01 AM | #31 | |
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09-17-2010, 01:32 AM | #32 |
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09-17-2010, 05:13 AM | #33 |
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09-21-2010, 07:19 PM | #35 |
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Bazinga! Okay....gimme gimme! Where do I send payment?
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09-21-2010, 07:23 PM | #36 | |
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BTW, what pin are you pulling the +12V from for the remote turn on relay. I think I want to go back and do this. Right now my remote is a direct tap off the OEM remote. Actually what I want to do is make it so that the amp doesn't turn on when the door opens. I only want it to turn on when the ACC is on. Is that +12V constant or ACC?
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09-21-2010, 08:11 PM | #38 | |
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09-22-2010, 04:17 AM | #39 |
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09-22-2010, 09:16 AM | #40 | |
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how long are the wires? and can you make some with male RCAs? because then i would just hook up all those speaker wires/RCAs straight to the amp no need for connectors |
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09-22-2010, 10:24 AM | #41 |
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09-22-2010, 11:34 AM | #42 |
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That wouldn't make any sense because then he would have to make 10 different versions of the harness to accommdate all the different lengths of interconnects people might need. What's so hard about plugging in an interconnect cable? The female RCA is a standard connector on the back of any aftermarket head unit.
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09-22-2010, 06:48 PM | #43 | |
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just makes sense to just plug all the ends straight into the amp Vs plugging more stuff into the connector that then goes to amp plus he wouldn't have to make 10 different versions i mean he chose 6" for the speaker wires what if you need more? well then you'd have to extend it, same as if the RCA was male |
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09-22-2010, 07:56 PM | #44 | |
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The reason of those lengths is very simple... I don't know where the customer will install the aftermarket amp. |
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