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crossover mounting location

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Old Oct 12, 2005 | 10:31 PM
  #1  
Gummie's Avatar
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From: Readington, NJ
Car: 88 GTA
Engine: 350 TPI
Transmission: T-56
Axle/Gears: 9 bolt w/ 3.73
crossover mounting location

Just wondering where people stash their crossovers. I don't think that mine will fit under the dash because they're freaking huge (7.5" x 5" x 2") and weigh too much to be supported by the cheap plastic that's up there (they weigh roughly 3 pounds each).

I'm thinking about doing what I've seen a few import guys do and mount them in the back of the car next to the amp. Aside from having to run twice the speaker wire and having them in plain view, do you guys foresee any problems with this? I will run the speaker wire on the opposite side of the car as the power wire (same side as the RCAs).
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Old Oct 12, 2005 | 11:42 PM
  #2  
REZN8R's Avatar
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From: Enumclaw, WA USA
Car: '96 M3
Engine: 3.2L V-6
Transmission: 5-sp
I put mine above the cheap plastic covers. They aren't as heavy as yours, but there should be room up there if you use zip ties, or some other way to keep them secure.
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Old Oct 13, 2005 | 12:00 AM
  #3  
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From: Readington, NJ
Car: 88 GTA
Engine: 350 TPI
Transmission: T-56
Axle/Gears: 9 bolt w/ 3.73
You mean up under the dash, above the cover that's designed to divide your feet from the car's wiring? I’m not sure that I will have enough room/anything to tie them too, but I will take a look tomorrow when the sun gets up.

I'm not really sure how much I like the idea of zip tying them down, but it makes more sense than leaving them out in the open. I will report my findings later tomorrow.
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Old Oct 13, 2005 | 07:47 AM
  #4  
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Mine are in the back near my amplifiers. In my old firebird I mounted them above the lower dash panels, and did not find that to be an ideal environment. Initially I had the passenger one double-back-taped to the ECM, and it would cause the ECM to throw service engine codes all the time. A crossover as big as yours will be very tough to fit securely in the dash. If you mount them in the back, you've got to run 2 sets of speaker wire instead of 1 set up each side of the car, but since you have to go through all of the same motions anyway, it's really not any harder.
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Old Oct 13, 2005 | 09:25 PM
  #5  
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From: UTAH
Car: 1982 Z28 & 1967 RS & 2002 Z28
Engine: 388 ci SB / 454 ci BB / LS1
Transmission: 4 speed / TH350 / T56
Axle/Gears: '91 "1LE" rear, posi w/ 3.23's
I mounted in in the amp rack...
Attached Thumbnails crossover mounting location-carstereoz28-sept-3rd-2005  
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Old Oct 13, 2005 | 10:04 PM
  #6  
1meanGTA's Avatar
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From: Wichita KS
Car: 1987 GTA/1998 Explorer
Engine: 355, trick flow heads, zz409 cam, 3
Transmission: 700r4, shift kit, valve body
Axle/Gears: precision 3.73's, auburn diff
thats pretty slick. details on that amp rack? wood or fiberglass? you make it?

still not sure what im going to do with my xovers, got word today though that my components have been shipped to me, should have em monday or tuesday
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Old Oct 13, 2005 | 11:43 PM
  #7  
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From: Readington, NJ
Car: 88 GTA
Engine: 350 TPI
Transmission: T-56
Axle/Gears: 9 bolt w/ 3.73
I defiantly wouldn't want to use double sided tape because I would fear the tape giving away eventually. That and having a layer of foam between the two surfaces would amplify certain gyrations of the car, which would mean that the crossovers would sometimes have a rougher ride than they other wise would be subjected to. Zipties looked out of the question when I looked earlier today unless I want to cut/drill holes in things so that the ties will have something to go around. It looks like I will probably mount them in the hump area.

I don’t really want to start another new thread (I have enough going now as it is ), so I will ask this here: What advantage would bi-amping give you over using a single amp for your average component set?
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Old Oct 14, 2005 | 09:40 PM
  #8  
1meanGTA's Avatar
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From: Wichita KS
Car: 1987 GTA/1998 Explorer
Engine: 355, trick flow heads, zz409 cam, 3
Transmission: 700r4, shift kit, valve body
Axle/Gears: precision 3.73's, auburn diff
if you have a 4 channel amp, or 2 2 channel amps, you can run the mids and tweets seperately.

im doing that with my alumapros, which came today, and sounded awesome hooked up freeair. couldnt believe it, guy sent it fedex yesterday 4pm and i got it about 5pm today. was ground too, not next day or anything.

anyway, bi amping is where the crossover has 2 hookups for input from the amp. so with my 4 channel orion im bridging 2 channels for 200x2 to the mids, and putting 275-300 watts to them. i dont know how much the tweets handle, but they'll be hooked up to the other 2 channels, only not bridged, should be 100x2 but i dont think they'll need more than 20 watts. anyone know how much high end silk rainbow tweets will handle?

most crossovers have a jumper or something to attenuate the tweets, so they dont play as loud but its better to use different channels for them if you can.
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Old Oct 16, 2005 | 02:17 AM
  #9  
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From: Readington, NJ
Car: 88 GTA
Engine: 350 TPI
Transmission: T-56
Axle/Gears: 9 bolt w/ 3.73
Originally posted by 1meanGTA
if you have a 4 channel amp, or 2 2 channel amps, you can run the mids and tweets seperately.

im doing that with my alumapros, which came today, and sounded awesome hooked up freeair. couldnt believe it, guy sent it fedex yesterday 4pm and i got it about 5pm today. was ground too, not next day or anything.

anyway, bi amping is where the crossover has 2 hookups for input from the amp. so with my 4 channel orion im bridging 2 channels for 200x2 to the mids, and putting 275-300 watts to them. i dont know how much the tweets handle, but they'll be hooked up to the other 2 channels, only not bridged, should be 100x2 but i dont think they'll need more than 20 watts. anyone know how much high end silk rainbow tweets will handle?

most crossovers have a jumper or something to attenuate the tweets, so they dont play as loud but its better to use different channels for them if you can.
I understand how the concept of bi-amping works, but I just don't understand what one would gain from it if you're using a nice clean amp to begin with. BTW, congrats on getting your speakers If the person that shipped them to you was close, that would explain the fast delivery. I ended up getting my comps about 4 days before you, but it will be a little while before I get to listen to them because the kicks are not done yet.

BumpaD82: I'm not sure how I missed your post, but that's a really nice install. Right now I'm thinking about mounting my future amps (currently just have one, will be buying at least one more once decide on what to get ) in the back of the rear seat. I'm not sure how I could get the crossovers in there, but I might be able to because I have a non-split rear (I could put them over the drive shaft hump in between the two amps). I’m trying to make my system as obtrusive as possible (and hopefully not that eye grabbing) while still running a fiberglass box and kicks. I’m planning on covering the sub box in carpet to match with the rest of the car when I build it to make it blend in more. I’m also going to run metal mesh grills over all of my speakers to protect them some and to take away from their flashiness. At a glance it shouldn’t be that obvious that anything cool is going on.
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Old Oct 16, 2005 | 09:58 AM
  #10  
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Joined: Apr 2001
Posts: 482
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From: UTAH
Car: 1982 Z28 & 1967 RS & 2002 Z28
Engine: 388 ci SB / 454 ci BB / LS1
Transmission: 4 speed / TH350 / T56
Axle/Gears: '91 "1LE" rear, posi w/ 3.23's
Originally posted by 1meanGTA
thats pretty slick. details on that amp rack? wood or fiberglass? you make it?

still not sure what im going to do with my xovers, got word today though that my components have been shipped to me, should have em monday or tuesday
It's wood, screws, kity hair, bondo, & resin and then covered in Vinyl...

And yes I did do it myself.
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Old Oct 16, 2005 | 06:42 PM
  #11  
1meanGTA's Avatar
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Joined: Mar 2005
Posts: 960
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From: Wichita KS
Car: 1987 GTA/1998 Explorer
Engine: 355, trick flow heads, zz409 cam, 3
Transmission: 700r4, shift kit, valve body
Axle/Gears: precision 3.73's, auburn diff
well bi-amping is good because you can push your mids to their limits without worrying about blowing the tweets. or set the tweets only as loud as you want them if they're too piercing or whatever.

guy was in new jersey, im in west virginia. still can't believe it got here in 1 day. my kicks should be here anyday, within a week for sure. have all the wiring and everything else ready to go, just waitin on the kicks and i'll be set.
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Old Oct 22, 2005 | 04:24 PM
  #12  
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From: Key West, FL
Car: 1991 Pontiac Firebird
Engine: TBI 5.7L v8
Transmission: Modified T-5
Right now I have some tweeters in a A-Pillars and 4" mids in the dash... I mounted my crossovers on the kickpanels... which didn't turn out to be such a good idea. I kept kicking the cover off on the one on the drivers side whenever I went for the clutch pedal. Eventually I broke the crossover, and now I'm at the part of redoing them with 6.5". Probably end up mounting my crossovers either behind the radio pod somewhere, or back by the amp. My deck's already pretty full, but I'll figure something out.

When I worked installing audio, we usually mounted them behind the door panel if possible. Unfortunatly, there's not a real good spot to do such a thing in our cars.
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Old Oct 22, 2005 | 05:00 PM
  #13  
1meanGTA's Avatar
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Joined: Mar 2005
Posts: 960
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From: Wichita KS
Car: 1987 GTA/1998 Explorer
Engine: 355, trick flow heads, zz409 cam, 3
Transmission: 700r4, shift kit, valve body
Axle/Gears: precision 3.73's, auburn diff
how about under the rear, or front seats?

thats what im probably going to do, anyone done it?
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Old Oct 22, 2005 | 10:41 PM
  #14  
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From: Key West, FL
Car: 1991 Pontiac Firebird
Engine: TBI 5.7L v8
Transmission: Modified T-5
I wouldn't mount them under the back seat on account of people sitting on the seat. I also personally wouldn't mount them under the front seats either because of them moving up and down, and because of people getting in with wet shoes. I'm sure they'd be okay, but IMO, it'd be better to mount them either under the dash, if they were small enough, or back on the back deck.
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