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Drew
Dodge Dakota
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3/04/2004
22:20:43
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 Subject: Component Positions, help me out
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Hey, I've got a 2000 Dakota SLT and I'm wondering about positioning my components. My system consits of an Alpine 7897 Mp3/CD, a Rockford 70 x 4 channel amp for the highs, a pair of Kicker Comp VR 15's in 2 sealed 2.5 foot boxes, an Xtant 1001 (1000 watts of mean class D power), farad cap, Xm, a set of Infinity Perfect 6.1s and a pair of Kicker Resolution 6.5 midbass and tweets (no comp. crossover, bought the two pairs seperate). I'm curious about putting the Kicker tweets on the A- pillar with the mids in the front doors while the Infinity's reside in the back since they're so close to my head when I drive with the tweets somewhere up high in the back part of the truck. I want it to sound as good as possible, and with the Alpine head having about 20 different sound shaping and crossover settings I think with correct speaker placement it will work. If anyone has any ideas about where to put my comps, please let me know. I've tried a few positions for them, and I just can't get great sound. Someone help me out if you don't mind, I'd really appreciate it. Peace.
-Drew
Dreww5689@aol.com
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DSW
Dodge Dakota
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3/05/2004
01:58:46
|  RE: Component Positions, help me out
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I have Infinity 605CS components front and rear. The front tweets are mounted high on the A pillar, pointing to the opposite seat. Meaning that the right front tweet is pointing at the driver and the left front tweet if pointing at the passanger. I think the placement realy helped balance out the tweets as one tweet doesn't over power the other one. The rears are mounted high in the side panels pointing to the center of the front seats.
I have a Orion 4x50w amp running the Infinity 605CS's and the deck's fader is to the front +1. The speakers sound realy balanced as I don't notice the back speakers unless I turn to look out the side windows.
One thing I should add, the Infinity tweeters were realy bright when I installed them. They were screaming realy loud and weren't balanced with the mids at all, even with the -3db terminal on the Xovers. I put a,,, I think it was a -2 db Lpad on all the tweeters and it realy helped balance out the highs. The Infinity's tweeets are known to be too bright, so I don't know if your going to run into this problem.
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Drew
Dodge Dakota
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3/07/2004
00:05:20
| RE: Component Positions, help me out
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Hey, thanks for responding. My infiniti's really got into my head until i turned them down to -4 dbs. now they sound really natural and accurate when compared to other comps ive heard. what is an Lpad? I've never heard of that, do you have any pics of your install? i dont quite understand where the tweets were mounted in the rear
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DSW
Dodge Dakota
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3/07/2004
17:41:22
| RE: Component Positions, help me out
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No pics of the install, but the rear tweets are mounted in the side panel between the side pop-out window and the back window, about 2 inches down fron the top of the panel. If you look at the back of the panel you can see where there is a good location for the tweeter.
An Lpad is a series/parallel network of resistors that drop the voltage to the speaker while maintaining a proper 4 ohm load for the speakers crossover. Adding just a parallel or just a series resistor to the speaker would drop the voltage, but it would change the load the crossover sees and throw off the crossover.
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Drew
Dodge Dakota
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3/07/2004
19:50:01
| RE: Component Positions, help me out
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Interesting... didn't know things like that were made. Where do I get one? I think I'm gonna try out the tweeters in the back and see how they sound. Thanks.
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DSW
Dodge Dakota
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3/08/2004
15:28:52
| RE: Component Positions, help me out
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Radio Shack has 8 ohm adjustable Lpad's, but they don't have 4 ohm Lpad's that youre going to need for car stereo stuff, at least I haven't seen them there. You can also make an Lpad out of a series and parallel resistor tied to the speaker. Just do an web search for "Lpad calculator" and you can figure out the values of the resistors needed for different Lpad's. Once you have the resistor values, just solder up some 5W, 10W or 20W resistors of the correct values and your set. I bought enough resistors from All Electronics to build four -1db, -2db and -3db Lpads, (12 Lpads) for $20.
The adjustable Lpads are nice since you can turn a dial to increase or decrease the speaker volume, but they are expensive $15-20 ea. Fixed Lpads are cheap, but a pain since you have to play with different values of Lpads to balance the speakers. I lucked out and guessed that -2db was the right Lpad to use for my stereo the first time.
Power drop, db, Rs, Rp
20%, -1db, .44ohm, 33ohm
37%, -2db, .82ohm, 15.5ohm
50%, -3db, 1.17ohm, 10.34ohm
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