12 replies to this topic

[jitesh_88]

Hi guys

i've heard about this forum a lot

i need some help regarding choosing the best aub+amp combo

i have done some research and chosen to go with kicker zx4001. amp working 400rms@2ohm and 200rms@4ohm

i have shortlisted a few subs can someone recommend me which will be the ideal sub to match with the amp making sure its not underpowered

i know i should be matching the rms for the amp and the sub. but the ohm factor makes the difference. not sure how that works

i mostly listen to RnB music if that helps

1) jl w3v2-4 300RMS@4ohm
2) jl cp112W0-4 200RMS@4ohm
3) kicker compvr CVR122 400RMS (not sure about ohm value) website says 2/4 DVC
4) jl w3v3 available in 2/4ohm @500RMS

[Ben DePellegrini]

Welcome,

Kicker Subs with a Kicker amp isn't ever going to steer you wrong for a first setup. Since you like them enough to want the ZX400.1, i'd get the CVR122 sub. Make sure you get the dual-4 ohm, so that you can wire the VC's in parallel down to 2ohms.

Impedances (resistances to current flow) when put in series will add up, i.e. 4ohm + 4ohm = 8ohm total, whereas impedances in parallel give the current twice the room to move, so the impedance is 1/x'ed with itself, i.e. 4ohm // 4ohm = 2 ohm total.

Most importantly, what box are you wanting to put the 12" in? As this will define what type of bass your sub makes

Ben

[jitesh_88]

i am going to put it in a std kicker box. it comes with the enclosure from jbhifi. would that be ok ?

so your saying i should get the kicker CVR 124 which runs at 4ohm instead of 122 which runs at 2ohm ??

will this work my amp at full capacity ?

if i am getting the above sub should i stick with zx400.1 or zx500.1 ?

they both work at 2ohm

[Ben DePellegrini]

The CVR124 is a dual-4 ohm sub, so you should get this sub. To reiterate what i've said above, a dual 4ohm sub will run at 2ohms total, so this will get the proper 400w rms out of your zx 400.1

[jitesh_88]

yep totally agree with you

but wouldnt this make the amp work at 100% capacity to generate 400rms at all times ?

someone told me the amp works efficiently at 80% capacity so the amp should always overpower the sub by a marginal value and not be the exact match

is that true ?

[Ben DePellegrini]

Uhh, not really.

Efficiency through the output and RMS values are two different things.

Output efficiency figures are related to the type of Op Amp circuitry inside (i.e., if its a Class A amp with low efficiency, class B, A/B, D, N etc). This stuff is way above the realm of what you need to worry about. Basically the efficiency of an amp at 80% will mean that for every 100w it outputs, it will consume 120w from your batteries in doing so (and almost 20w is lost in heat.)

An RMS value in simplest terms is the value at which the amplifier is happy to operate at 24/7. An amplifier is designed to be nice and happy while operating at its RMS value so long as it is getting the required current from your batteries. Pushing an amp to 100% capacity (or overdriving the input signal) will either cause clipping or distortion on the output signal, and you'll know about that if it ever happens. It never hurts to have an amplifier with a larger RMS value than the sub is rated at, provided you know what you're doing with gains and bass-boosts.

[jitesh_88]

hmmm ohk.thats good to know

so would you recommend zx400.1 or zx500.1 with this sub ?

well this is my first sub+amp pack so i wouldnt know much about tuning the gains or bass boost

i was considering getting it fitted by a professional maybe

do you know any good cheap installers ? also what wiring kit would be the best for the kickerpack ?

[Ben DePellegrini]

The ZX 400.1 will be very well matched for a CVR124. I can happily tune it for you, and if you like, we can install it for you one time, and i'll gladly teach you a few things about what we are doing. I have a small ebay shop, and I do "backyard" installs for people on weekends when available, so id happily give a new fella a hand if he wanted.

If you wanted it installed professionally, there are site sponsors here from Melbourne that will do an exceptional install job for you. You could use an 8gauge power wire kit for a 400w rms system, but I always prefer to use wiring that is larger than I need, so that there is no risk of error with its power handling

[jitesh_88]

oh yea that sounds great man

i would love to see how its done. i was really keen on doing it but people told me not to play with it when doing it the first time.

i havent got the pack yet. whats the link for your ebay store ?

[Ben DePellegrini]

I've sent you a private message mate,

I'm happy to talk you through an install and try and teach you a couple of things.

[Fever.tapaz]

we got 2 square boxes forr l7 kickers (empty) and 1 4ohms l7 aswell in single box (sub and box).. we also have the 12" cvr kickers in Dual boxes x 2 in our garage.. for more info pm instead of wasting your money at jb

Edited by Fever.tapaz, 28 May 2012 - 07:57 PM.

[Ben DePellegrini]

Where is your garage? I might pop in and say hi one day

[Fever.tapaz]

it's in cranbourne west