building the perfect system PART 2

[937DYTBOI 5,000+ posts]

what amp do u have

 

[Prowler573 5,000+ posts]

the lower the ohms the better performance out of your amp

I find the necessity to take issue with this post...

In very general terms the lower the resistance load that is presented to an amplifier the more output wattage that amp will produce but there are exceptions...

Some resistance loads are too low for a given amplifier and can either cause said amp to go into protection or in extreme situations can cause amplifier damage.

what is the difference?
2ohm or 4ohm?

which is better?

why is it better?

what is ohm for?

Neither is inherently "better" than the other - they simply are what they are. Speakers and subwoofers have voice coils of one resistance value or another and it is up to the end user to implement those values in the best manner possible for use with whatever gear he or she is running.
Example: If you have a Dual Voice Coil subwoofer which is built with 4 Ohm coils (meaning there are two 4 Ohm coils on this one individual driver) then when you combine those two coils you can get either a 2 Ohm load if the coils are wired in parallel OR you can get an 8 Ohm load with those coils wired in series.

To further complicate things let's say you have a pair of Dual Voice Coil subwoofers which use 4 Ohm coils. Now you have four 4 Ohm voice coils to contend with and the possibilities for overall nominal impedence are 1 Ohm total, 4 Ohms total, or 16 Ohms total. (see here for a fairly handy guide as a beginner's reference)

If you decide on what amp to buy first then you have to see what the lowest resistance load it will safely operate at is and then buy appropriate drivers for it. Ergo: If you have an amp that creates its biggest power when shown a 2 Ohm load you're not going to want to use that am to drive a pair of 4 Ohm Dual Voice Coil drivers as they cannot be combined to make a 2 Ohm load. A single 4 Ohm DVC driver can - but not a pair of them.

On the flipside of that same coin if you decide on the subwoofers first then you need to figure out what the wiring possibilities are then buy an amp that makes appropriate power for your drivers at whatever resistance load you need.

And as far as levels of power are concerned:

Completely disregard peak power ratings. They are an immaterial number good for little else than some marketing executive to use to sell products to novice enthusiasts. The RMS ratings are what you ought to be concerned with...find out what the total of your RMS ratings are (as in: if you have wo subs that the RMS ratings on each are 750 watts then you'll want to be looking for something that makes around 1500 watts or so at whatever resistance load those two subs combined create)

I'm sure there are some smallish details I've left out of this little diatribe but it ought to get you pointed in the right direction at any rate...

 

[mtdewelf 10+ year member]

why is this guy getting so much help, i fyou want to be loud then sound deaden your car and then you and your buddy go to a competition to figure out whose louder. don't base your stereo on how much you rattle or if you can be heard a block away.

 

[lifted95blaze 10+ year member]

why is this guy getting so much help, i fyou want to be loud then sound deaden your car and then you and your buddy go to a competition to figure out whose louder. don't base your stereo on how much you rattle or if you can be heard a block away.

b/c some ppl actoually help others on this site...........

 

[937DYTBOI 5,000+ posts]

u find what amp u want yet or the one u have

 

[dcg6 10+ year member]

what do you mean why im getting so much help? isnt this site to help others and support eachother? or im missing something here?

i dont have a amp, i dont have anything lol thats why im here to see what i should get

im just saying if i had a 1500watt amp hitting these 2 systems which you think would sound better

1 15" 2006 kicker l7

2 12" 2006 kicker l7

 

[SAG3 5,000+ posts]

amps dont hit subs they put out watts

 

[MrNiceGuy 10+ year member]

2 12 would mabe get louder for cone area and also if the get the same power then thats your decision man

 

[mtdewelf 10+ year member]

i careless for the music, i want the bang, the booooom booom outta it, ill still like to hear the music you know? so the people in my car or the cars next to me knows what im listening too (mostly rap) but then again i want the bboom booom part to make a role in this system

that is why i say, sorry but it's for your enjoyment not the other guys suffering. i can barely tell system is on until i'm in the car or doors are opened. It's not freakishly loud but loud enough that some people make me turn it down. just remember please. It's for your enjoyment not others.

 

[zachzchw 5,000+ posts]

that is why i say, sorry but it's for your enjoyment not the other guys suffering. i can barely tell system is on until i'm in the car or doors are opened. It's not freakishly loud but loud enough that some people make me turn it down. just remember please. It's for your enjoyment not others.

Well said......

Nothing worse than an ******* who's primary reason for a setup is so others can hear it.

Hopefully, your shit will get jacked- maybe next time you wont be so concerned with OTHERS being able to hear it.

 

[dcg6 10+ year member]

dont talk about my shit getting jacked when i never said what you thought i said

if you read it again, thats what i want my speakers to sound like, so everywhere in the 10-20ft range around my car will bang, not a mile away so people can hear me rolling, it says i like rap cuz i like the bass it has with it, this has notthing to do with others caring

if you dont want to help me then dont brother to post

 

[dkguitarist 5,000+ posts]

figure anything out yet bud?

 

[zachzchw 5,000+ posts]

dont talk about my shit getting jacked when i never said what you thought i said
if you read it again, thats what i want my speakers to sound like, so everywhere in the 10-20ft range around my car will bang, not a mile away so people can hear me rolling, it says i like rap cuz i like the bass it has with it, this has notthing to do with others caring

if you dont want to help me then dont brother to post

You never said what I think you said? Lets review:

"Originally Posted by dcg6

i careless for the music, i want the bang, the booooom booom outta it, ill still like to hear the music you know? so the people in my car or the cars next to me knows what im listening too (mostly rap) but then again i want the bboom booom part to make a role in this system"

Is it pretty clear now what you said? So yeah, I hope your shit gets jacked. You need to learn to have some consideration for other people, man. You think the people at stoplights want their 3 year old kid listening to rap, simply because its what you play?

Have some respect.

 

[MikeyB 5,000+ posts]

You need more than just the subwoofers and amplifier, do you have a headunit yet? Are you sure that the electrical system in your car will be able to support the amplifier you are going to be running. These are things that I would definately think about first before I go out buying subs and amps.

Between the two options you are presenting I personally would go with 2 12's but thats just me. My last setups have been single sub setups and I would just want to change it up, its all completely up to you. Either setup you can get to wang if you get it all together right.

BTW what vehicle is this setup going in?

 

[dcg6 10+ year member]

HEADUNIT - I didnt really take my time to thing on this one, but I was going to plan to buy a cheap one, is there something I should know buying headunits? whats the difference between a cheap one and a good one? or it just gives you the extra goodies?

WIRE/INSTALL/BOX - The wires dont really look like they cost alot, arent like 10 bucks for good wires? Installing, I dont know how to install a system or anything, my friends do but I rather take it to the dealers and let the pros do it. Its not like I dont trust them but they talk alot like they know it so it makes me feel unsafe or if anything goes wrong you know? For the Box, I have no idea on boxes, so far I heard ported makes your subs louder as in bass right? Isnt the ported the small ones? if anyone can help me on the types of boxes please do

SUBS - So far I'm nailing 2 12" 2006 Kicker L7's, I really wanted to get 1 good sub and 1 good amp and end the story but I looks like the 2 12"s are a popular combo, heres what I've planed tho

- 2 06 kicker l7 12"

- 1 kicker solo x 10" (2.5kw)

- 1 kicker l7 15"

So far most of the comments say the 2 12"s would be the best pick, if so I'll guess Ill go with it not unless something esle good comes out

AMP - I dont know what amp I should get, but once I find the right sub I will be getting then Ill just go with whatever matchs it or just fits it just right, Its not like I'm going to overpower it or unpower it, just going with whatever the subs can take

PRICE 700-800