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trucky
Dodge Dakota
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8/15/2006
08:02:23
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 Subject: crossover?
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i have a 4 channel amp with a low and high crossover. i have two crossover units that came with my alpines to hook the wires into... i have a head unit and 4 speakers, along with two tweeters. now...how do i do a crossover...cuz i dont know which wires go where.
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Audiophile72
Dodge Dakota
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8/15/2006
08:47:11
| RE: crossover?
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The two crossovers that came with the Alpines are used for hooking the woofer and tweeter up together. They should be marked as to which inputs are for what. 2 leads for the tweet, 2 for the woofer and 2 going back to the head unit. If you don't have a sub, then don't use the low/high pass filters on the amp cause you're gonna want full range to your other four in the cab.
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trucky
Dodge Dakota
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8/15/2006
18:18:58
| RE: crossover?
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oh so you cant bridge the wires for speakers...only for subs?
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Audiophile72
Dodge Dakota
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8/16/2006
10:27:31
| RE: crossover?
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Well, I won't say you can't because you can, although I don't see any reason why you would want to. : ) If you were building a home system and had 2 midranges, you would likely 'bridge' them in series and run to the crossover from there. The x-overs that came with the speakers are specifically tuned for particular frequencies to work with the woofers and tweeters. These are what are more commonly known as 'components'. Tear a good home speaker apart and you will also find x-overs in the box. It's just a way of isolating the different components in the system for peak perfomance.
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trucky
Dodge Dakota
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8/16/2006
10:31:42
| RE: crossover?
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so theres no way to get more power out of the amp from wiring it a certain way...i should just get a better amp...
p.s. thanx for the help
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Audiophile72
Dodge Dakota
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8/16/2006
10:45:10
| RE: crossover?
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Not with your cab speakers. You can bridge subs and amps together to run a 2 ohm load which increases your power. Running at 2 ohms is more effecient so it is able to generate more useable power easier. How many watts is your amp?
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trucky
Dodge Dakota
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8/16/2006
17:29:48
| RE: crossover?
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its only a 400W max which is relly 200 W....the problem is i have alpine type R's which take up 1200W max
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Audiophile72
Dodge Dakota
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8/17/2006
08:46:01
| RE: crossover?
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1200 watts? It sounds like you are talking about subwoofers. What model Alpines do you have? The Alpine SPR-17LS components are only 70 wats RMS (350 peak).
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trucky
Dodge Dakota
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8/17/2006
12:17:41
| RE: crossover?
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yes im talking about the speakers that peak at 350 each...i have two of those (700W total) and 2 of the other type R's (500W total) making 1200 watts max with a 400 watt max amp... the bass is horrible but the highs are good...thats why im looking for more power from a crossover... but i didnt know it didnt work that way for speakers....so...new amp only way?
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Audiophile72
Dodge Dakota
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8/17/2006
14:32:12
| RE: crossover?
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No, No! It doesn't work that way. You don't add up each speaker. That is just the handling capabilities of each speaker. The peak handling remains constant. Your 400 watt amp should be sufficient to power them. It could be more a problem with the way it is configured. Tell me what models of speakers and amp you have and I will come up with a configuration.
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trucky
Dodge Dakota
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8/17/2006
15:07:22
| RE: crossover?
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alright sweet...in the back i have two alpine type R SPR-17LS (the 350 watt max ones)
and in the front are the SPR-17LP (250 watt max)
aaaand i have the clarion APA450 which has 400W max power... and the back two speakers came with crossovers and tweeters... all i know is they sound great except i cant get ANY good bass...the stock speakers sounded better when it came to rap and stuff with deep notes...can u help?
oh yah i have a battery capacitor its 1 farad up to 1000 watts...im just afraid to install it cuz peeple always say they are dangerous
anyways thanx
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trucky
Dodge Dakota
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8/17/2006
15:09:26
| RE: crossover?
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oh i almost forgot...i have a kenwood head unit that puts out the average 50x4 watts too... hope that helps
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Audiophile72
Dodge Dakota
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8/18/2006
11:32:56
| RE: crossover?
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What model of Kenwood?
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trucky
Dodge Dakota
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8/18/2006
11:40:50
| RE: crossover?
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KDC-MP332
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DSW
Dodge Dakota
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8/19/2006
15:58:32
| RE: crossover?
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I see a couple of problems;
- Your good set of mid-tweet speakers should be in the front, swap the speakers front to back.
- when you are refering to the speakers and amp it appears the numbers are a mix or "peak" and "RMS" ratings, this confuses the issue since different manufacturer's rate thier peak power differently. Plus,,, the peak rating is probably only 1/3 the RMS rating. It's best to only refer to the RMS rating since this is the true power rating, peak power is basically a marketing tool.
- you have installed highend mid-tweet speakers which should have a subwoofer to support the low frequencies, the mid-tweets you have installed are not designed to play low frequencies well, just mid-high frequencies really loud.
Is sounds like you have a good start on a system, just need to change a few things and add a subwoofer.
This is what I would do;
1- Move the good mid-tweet speakers to the front and the lower power ones to the back.
2- Connect the mid-tweet speakers to the 400W amp with the amps crossover set to high pass at 80hz. Add a 300-500WRMS sub amp and subwoofer(s) with enclosure, set the sub amp's crossover to low pass at 80-50hz...or
2a- Connect the front speakers to the amp's front channels and set the amp's front channel crossover to highpass at 80hz. Connect the rear speakers to the deck's rear speaker wires. Add a 200 Wrms sub and connect it to the bridged rear channels of the amp, cross the amps rear channel over at 80-50hz. This would be the less preferred option.
Just my $.02, but I really don't think your going to be satisfied with the system until you add a sub.
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trucky
Dodge Dakota
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8/19/2006
20:41:56
| RE: crossover?
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i agree cuz im all about bass..but do you have any idea how impossible subs are in the 05 models?
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trucky
Dodge Dakota
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8/23/2006
07:51:33
| RE: crossover?
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audiophile??
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Audiophile72
Dodge Dakota
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8/23/2006
09:48:36
| RE: crossover?
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Sorry trucky...very busy weekend. I would agree with most of the above assessment. If you like the bass (don't we all?), you're not going to be totally satisfied without a sub. Definitely move the components up front. My only other suggestion if you truly cannot go with the sub would be to ditch the 2-way coaxials in the rear and throw a good set of 6.5 mid-bass speakers in. Kicker has a decent set with a good reponse of 30-500 hz. It's a little more dedicated to the lower/mid spectrum of bass rather than keeping the mid-range speakers. If installing a sub, l wouldn't go as low as 50hz on the low-pass though...cut it about 80. Drivers tend to have a secondary (although not as strong) resonant frequency. Additionally, not all enclosures/drivers resonate below 50hz. It's something to play with but I find I usually always set at 80, occasionally at 60.
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