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Car Audio. Quick guide. - Page 2

post #11 of 62
Okay with amps, the mono is specifically made for subwoofer. The two channel's are for either subwoofers or two speakers. And the 4 channel's are for 4 speakers i.e. your interior speakers. Each channel is a speaker. The more watts the better because you will get good volume with minimal distortion.

As for ohms, most all interior speakers will be 4 ohms so no real decision there. With subwoofers it's all about how they will hooked up. So say you are hooking up two subwoofers to a mono amp that is rated to run at 2 ohms, you will want to get two 4 ohm subs so , when bridged in parallel, will equal a two ohm load. If you get a 2 channel and want to hook up two subs, you want to get either two 2 ohm subs, or two dual 4 ohm voicecoil subs, to run each sub at 2 ohms.

As for brands, Alpine, Kicker, Kenwood, JL, PPI, Orion are a few. I'm not a big fan of the lower end Pioneer stuff, or really anything from Rockford Fosgate, though some like it. Stay away from generic brands like they are the plague.

Any other questions, let me know. I've been in the buisiness for 8 1/2 years.
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post #12 of 62
I'm running 4 12's, 3 amps, an equalizer, multiple batteries, multiple sets of speakers, 250 amp alternator.
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post #13 of 62
Quote:
Originally Posted by Truambitionz View Post
Thanks guys. So if I'm going to have two sub's, I would need a duo-channel amp?

If each subwoofer is rated 150rms (as an example). Then I would need a duo channel amp rated at 300 rms which will be split evenly? Am I understanding this correctly?
correct. ok this is what i did. i have 2 dual voice coil subs whis acts like 4 subs. i need300 watts RMS to each post on the subs so i use a 4 channel amp to drive each post. look at my pic you will notice it has 2 speaker hookups.
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post #14 of 62
Or a monoblock that's rated at 300 watt @ what ohms you're looking for. If it's two single 4 ohm coils, you'd want a monoblock that'll do 300@2 ohm. Class a/b amps like a 4 channel amp aren't recommended usually for driving subs because a class D monoblock is more efficient.
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post #15 of 62
So far some good advice!

I'd also add that it's possible to run your entire stereo with a single 3 channel amp. Two channels run my 4 speakers (allowing for left/right balance but not front/rear fade) and the 3rd channel runs my sub.

Ignore an peak specs that you see - as lanman points out above, that's the peak power spike that an amp can generate or that a speaker can handle. A stereo rarely, if ever, hits those numbers. RMS is a much more accurate rating of how many watts a speaker can handle or an amp can put out. Also, you want to make sure that you have enough amp for your speakers. If you have a set of 50w RMS speakers, you'd probably want to make sure your amp gets as close to that as possible without overdoing it. If you get a 10w amp, your speakers aren't going to live up to their full potential.

Bring a CD of some of your favorite music with you so that you can listen to the speakers play YOUR music and not their stupid little demo CD or the radio. Different speakers sound good for different types of music.

As for speaker build quality, make sure you get speakers with a poly or plastic cone (not paper) and a rubber surround (not foam). The cone is the main part of the speaker, and the surround is the part that goes around the main edge of the speaker and attaches the outer edge of the cone to the metal rim which holds the speaker in place.

Also, don't forget about the speaker box. Custom boxes can sound *great* but will cost a pretty penny. There's nothing wrong with a pre-made box if you can find one which fits in the space you have. I personally have an older version of this one (I've had it for 6-7 years now) - http://www.bostonacoustics.com/car/c...product_id=381

A box with ports in it will tend to sound louder and deeper but floppier - good for rap and hip hop. A sealed box without any ports will sound tighter and snappier - good for every other style of music.

Likewise the smaller the sub, the tighter the bass. A 12" sub will sound loud and deep but be floppy sounding. A 8"-10" sub will sound tight with a good snappy hit.

EDIT: Just saw that you're looking at 2 subs - you can run them off of the same channel but you'll probably need a pretty big amp. A 2 channel amp would be good if the subs you choose are rated at 4ohms since few amps are stable down to 2 ohms (when you combine 2 speakers on one channel, the resistance cuts in half). You'll be better off with two 8 ohm speakers if you're going to run them on the same channel.
     
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post #16 of 62
Quote:
Originally Posted by e_dogg View Post
So far some good advice!

I'd also add that it's possible to run your entire stereo with a single 3 channel amp. Two channels run my 4 speakers (allowing for left/right balance but not front/rear fade) and the 3rd channel runs my sub.

Ignore an peak specs that you see - as lanman points out above, that's the peak power spike that an amp can generate or that a speaker can handle. A stereo rarely, if ever, hits those numbers. RMS is a much more accurate rating of how many watts a speaker can handle or an amp can put out. Also, you want to make sure that you have enough amp for your speakers. If you have a set of 50w RMS speakers, you'd probably want to make sure your amp gets as close to that as possible without overdoing it. If you get a 10w amp, your speakers aren't going to live up to their full potential.

Bring a CD of some of your favorite music with you so that you can listen to the speakers play YOUR music and not their stupid little demo CD or the radio. Different speakers sound good for different types of music.

As for speaker build quality, make sure you get speakers with a poly or plastic cone (not paper) and a rubber surround (not foam). The cone is the main part of the speaker, and the surround is the part that goes around the main edge of the speaker and attaches the outer edge of the cone to the metal rim which holds the speaker in place.

Also, don't forget about the speaker box. Custom boxes can sound *great* but will cost a pretty penny. There's nothing wrong with a pre-made box if you can find one which fits in the space you have. I personally have an older version of this one (I've had it for 6-7 years now) - http://www.bostonacoustics.com/car/c...product_id=381

A box with ports in it will tend to sound louder and deeper but floppier - good for rap and hip hop. A sealed box without any ports will sound tighter and snappier - good for every other style of music.

Likewise the smaller the sub, the tighter the bass. A 12" sub will sound loud and deep but be floppy sounding. A 8"-10" sub will sound tight with a good snappy hit.
very nice info on that. and you are right stay away from paper coned get poly. and foam surrounds are nice at first till the rot out. and keep your rubber lubercated LOL. oh and make sure you get subs with a large magnent. that is one marketing scam. "hey this sub has 1200 watts but it only has a 50 oz magnent." the best i have found is 120 double stacked
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post #17 of 62
Thread Starter 
Quote:
Originally Posted by G|F.E.A.D|Killa View Post
correct. ok this is what i did. i have 2 dual voice coil subs whis acts like 4 subs. i need300 watts RMS to each post on the subs so i use a 4 channel amp to drive each post. look at my pic you will notice it has 2 speaker hookups.
I didn't even know that existed. Cool.
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post #18 of 62
While there is a bunch of great info here, there seems to be a major oversight. Before determining components and brands you'll need to look at 3 things:

1) The purpose of the system (ie. to sound good vs. shake neighbourhoods)
2) The type of music you'll use it for
3) The amount of space you have available in your vehicle (sub enclosures are just as important as the drivers).

The brands, sizes, and quantity of components will vary greatly depending on your answers to 1, 2, and 3.
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post #19 of 62
Thread Starter 
Quote:
Originally Posted by C-bro View Post
While there is a bunch of great info here, there seems to be a major oversight. Before determining components and brands you'll need to look at 3 things:

1) The purpose of the system (ie. to sound good vs. shake neighbourhoods)
2) The type of music you'll use it for
3) The amount of space you have available in your vehicle (sub enclosures are just as important as the drivers).

The brands, sizes, and quantity of components will vary greatly depending on your answers to 1, 2, and 3.
1. Sound good. Not looking to win competitions or anything.
2. Hiphop, Trance/Techno.
3. Average trunk space.
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post #20 of 62
A single 12" sub will probably do you good. I listen to the same type of music and am very happy with my single 10" sub. Two 12" subs will probably overpower the rest of the stereo for techno - plus royally piss off your neighbors.
     
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