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Old 04-01-2006, 12:39 AM   #1
SlipKnoT
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Need a good amplifier...

Im looking for a good amp to give extra power to 2 Infinity Reference 960i 6x9's, and 2 Infinity Kappa 32.7cf 3 1/2's. The References are in the rear windows, and the Kappas are in the doors.

Any ideas? Not anything too expensive, but it has to has pretty good power, and sound good.
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Old 04-01-2006, 01:11 AM   #2
davsmitty
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sorry bub, i can tell you how to wire & check things, but Im not good with different products. Kicker makes rock solid amps, but you can probably find cheaper stuff. Im sure Thunderbird or Dodgerforlife will show up and help you out. Im guessing that you need a good 4chnl amp though? Kicker has a mulitupe of multi channel amps to choose from. I think a KX350.4 could do for you (90Wx4 at 4ohm) and you can probably find it for fairly cheap cause its discontinued. The ZX line of 4chnl. are the same as the KX, just different look (and new so $$$). thats all I can tell you.
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Old 04-01-2006, 02:30 AM   #3
thunderbird1100
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Quote:
Originally Posted by SlipKnoT
Im looking for a good amp to give extra power to 2 Infinity Reference 960i 6x9's, and 2 Infinity Kappa 32.7cf 3 1/2's. The References are in the rear windows, and the Kappas are in the doors.

Any ideas? Not anything too expensive, but it has to has pretty good power, and sound good.

What you need to do is get bigger/better speakers for up front then amp them.
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Old 04-01-2006, 05:21 PM   #4
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hey T-bird, does wireing set of crossovered tweeter and limiting the freq. to a pair of coaxles make it a componet set? Also, you told me in another thread that i need to set my 6.5s in a good enclosure, would a metal coffee can work? I could line it with some spray dynamat and bump out the bottom so its not flat. what do you thinK?
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Old 04-01-2006, 06:01 PM   #5
SlipKnoT
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Quote:
Originally Posted by thunderbird1100
What you need to do is get bigger/better speakers for up front then amp them.

Well, what I really am wondering is do I really need an amp for this kind of set up? I havent bought the components yet, but Im working on it. The CD player Im going to be getting is an Alpine CDA-9856 and its power output is 50 x 4. Do you think I could just run the speakers off of the head units power and still have it be loud and sound good? (clear, non-distorted, etc.)
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Old 04-01-2006, 07:17 PM   #6
thunderbird1100
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Quote:
Originally Posted by davsmitty
hey T-bird, does wireing set of crossovered tweeter and limiting the freq. to a pair of coaxles make it a componet set? Also, you told me in another thread that i need to set my 6.5s in a good enclosure, would a metal coffee can work? I could line it with some spray dynamat and bump out the bottom so its not flat. what do you thinK?

Technically no, since you are still using the mid of the coaxial speaker which has a big hole in the middle so it doesnt produce as good midbass as a true 6.5" mid. But it's definatley a step closer to a component setup and probably will produce better highs (Separate tweeter always better than coax tweeter), but obviously the midbass will be exactly the same.

To make it easy you could just fabricate an MDF spacer (like 1/2") to mount the mid on then mount that to the door, it will improve the sound acoustically and reduce rattling. A metal coffee can wont sound good...
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Old 04-01-2006, 07:25 PM   #7
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Quote:
Originally Posted by SlipKnoT
Well, what I really am wondering is do I really need an amp for this kind of set up? I havent bought the components yet, but Im working on it. The CD player Im going to be getting is an Alpine CDA-9856 and its power output is 50 x 4. Do you think I could just run the speakers off of the head units power and still have it be loud and sound good? (clear, non-distorted, etc.)

The head units power is really only about 15-18rms on an Alpine head unit. Remember, you never go buy max power ratings. And no, you will have very bad distortion if you turn up the HU volume. Aftermarket speakers require aftermarket amp power. 3.5" speakers are very small up front and what I would do is get some decent 5.25" components then amp them. Dont worry about rear fill speakers, just power them with the HU or if you want to put a small amp on them (like 35x2 rms). But you want the sound to come from the front, not the back.

Here some cheap decdent 5.25" components I found...

http://www.ikesound.com/product-product_id/3791
http://www.ikesound.com/product-product_id/2067
http://www.ikesound.com/product-product_id/4697
http://www.woofersetc.com/index.cfm?...duct_ID=26 81
http://www.onlinecarstereo.com/CarAu...roductID=16455
http://www.onlinecarstereo.com/CarAu...roductID=15119
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Old 04-01-2006, 08:26 PM   #8
davsmitty
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Quote:
Originally Posted by thunderbird1100
To make it easy you could just fabricate an MDF spacer (like 1/2") to mount the mid on then mount that to the door, it will improve the sound acoustically and reduce rattling. A metal coffee can wont sound good...

so back preasure dosent matter on mid ranges then? So i dont realy need to build an air tight enclosure for my 6.5s? Just brace them to the doors well and eliminate rattle? Tell me if I got that right. thanks
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Old 04-01-2006, 08:59 PM   #9
SlipKnoT
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Quote:
Originally Posted by thunderbird1100
The head units power is really only about 15-18rms on an Alpine head unit. Remember, you never go buy max power ratings. And no, you will have very bad distortion if you turn up the HU volume. Aftermarket speakers require aftermarket amp power. 3.5" speakers are very small up front and what I would do is get some decent 5.25" components then amp them. Dont worry about rear fill speakers, just power them with the HU or if you want to put a small amp on them (like 35x2 rms). But you want the sound to come from the front, not the back.

Here some cheap decdent 5.25" components I found...

http://www.ikesound.com/product-product_id/3791
http://www.ikesound.com/product-product_id/2067
http://www.ikesound.com/product-product_id/4697
http://www.woofersetc.com/index.cfm?...duct_ID=26 81
http://www.onlinecarstereo.com/CarAu...roductID=16455
http://www.onlinecarstereo.com/CarAu...roductID=15119

Sounds good to me. I think I'll go with a 5.25 Infinity component system. One last question: If I was to buy a good 4-channel amp, would I be able to amp all four speakers? I was thinking something like this. . .

http://www.onlinecarstereo.com/CarAu...roductID=13116

Sorry about the questions. When it comes to car audio, I know hardly anything about what to do and how to hook it up and shit. I just know what brands sound good and thats 'bout it.
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Old 04-01-2006, 09:26 PM   #10
thunderbird1100
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Quote:
Originally Posted by davsmitty
so back preasure dosent matter on mid ranges then? So i dont realy need to build an air tight enclosure for my 6.5s? Just brace them to the doors well and eliminate rattle? Tell me if I got that right. thanks

For high end applications it would make a big difference, but for lower end applications it probably wont make much of a difference, the soft MDF will give better acoustic quality and reduce rattling from the metal doors significantly. IT should sound fine.
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Old 04-01-2006, 09:36 PM   #11
thunderbird1100
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Quote:
Originally Posted by SlipKnoT
Sounds good to me. I think I'll go with a 5.25 Infinity component system. One last question: If I was to buy a good 4-channel amp, would I be able to amp all four speakers? I was thinking something like this. . .

http://www.onlinecarstereo.com/CarAu...roductID=13116

Sorry about the questions. When it comes to car audio, I know hardly anything about what to do and how to hook it up and shit. I just know what brands sound good and thats 'bout it.

Personally I wouldnt send an even band of power to the front and rear, you more sound coming from the front than the rear so I'd just amp the front components and run the rear off the HU. Makes sure to get a GOOD 2-channel amp to power the front. If you dont like that sound buy a very cheap 2-channel to power the rears (can pick them up a cheap 2-channel for $50-$60).

For instance if you want the Infinity Reference components I'd power them with this...
http://www.ikesound.com/product-product_id/3530

Then if you want to power the rear 6x9's by an amp later on get something cheap like this...
http://www.ikesound.com/product-product_id/4236
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Old 04-01-2006, 10:10 PM   #12
SlipKnoT
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Quote:
Originally Posted by thunderbird1100
Personally I wouldnt send an even band of power to the front and rear, you more sound coming from the front than the rear so I'd just amp the front components and run the rear off the HU. Makes sure to get a GOOD 2-channel amp to power the front. If you dont like that sound buy a very cheap 2-channel to power the rears (can pick them up a cheap 2-channel for $50-$60).

For instance if you want the Infinity Reference components I'd power them with this...
http://www.ikesound.com/product-product_id/3530

Then if you want to power the rear 6x9's by an amp later on get something cheap like this...
http://www.ikesound.com/product-product_id/4236

I was thinking these instead of the References. . .

http://www.onlinecarstereo.com/CarAu...roductID=15365

For an amp I'd really like to go with a Hifonics. I really dont want to go that cheap on anything. . .and I think i just leave the power to the HU on the rear 6x9s, and if I think they need more I pick up one later.
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Mods: Airbox delete w/ K&N cone, hollowed cat, Fidanza short throw.
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