Sub Woofer Question

[ozzy150]

I have 2 10" 600 watt RMS subs and no amp. Do i need to get a 2 channel amp, or can i use a mono amp. What is the min. watts i should use for a 2 channel amp, or for a mono amp. My subs are dual voice coils, and can run at 2 or 8ohm. I try other posts, but this one is the most friendly and has a great reply time. thanks for any help and happy holidays.

[Hatchman]

You can use either one. A mono amp is usually more suited for a pair of subwoofers, since a two channel amp will need to be bridged to send more power to both subs. And there is no need for 'stereo' sound coming out of the subs, so two channels isn't needed, and will be better off bridged mono anyway. But either one will 'work', but the mono amp would be better.

If it's a 2 channel, I would get atleast a 200W RMS per channel, so bridged into about 400W RMS, and should work fine as a 'minimum'. Same for a mono amp, I'd also get at least a 400W RMS X 1. Also depends on the manufacturer, some are under rated, some are over rated.

What kind of subs do you have?

[ozzy150]

2 audiobahn 10" AW1000Q. Right now i am thinking of going with a HIFONICS Z6000 amp that runs 300W x 2 @ 2ohm RMS, 600W x 1 @ 4ohm RMS. But from what you are telling me this is no good. Hopefully someone will out bid me on Ebay, although it is only 150 for a 300 dollar amp. Any specific suggestions on brand and ideal numbers for my amp. FYI The subs will be in a sealed box with .6 cuFt of air. thank you for an already helpful post.



Model # AW1000Q
Fs 30.0 Hz
Qts 0.41
Qes 0.44
Qms 5.3
Vas (Liters) 23 Liters
Vas (Cu. Ft.) 0.80 Cu.Ft.
Re 3.2 ohms
Le 1.95 mH
Mmd 143 Grams
Xmax +/- 12 mm
RMS 600 watts
Sd 0.030 M2
Freq. 23Hz-500Hz
Efficiency 91.1 dB

[TIsTAN]

you have two subs that can take 600w rms each, but what is the resistance value? i checked and these should be dual 4 ohms right? so depending on how you wire the voicecoils within one sub, and then wire the two subs together, the final resistance is what you will have to consider when choosing an amp.

if you wire the voicecoils in parallel to create 2 ohms and then wire the subs in parallel, you get 1 ohm. so you need to find an amp that puts out 1200w@1ohm. of course the amp has to be 1 ohm stable. only a mono amp will work here.

if you wire the voicecoils in parallel to create 2 ohms and then wire the subs in series, you get 4 ohms. so you need to find an amp that puts out 1200x@4ohms. most amps are 4 ohm stable and you can take two channels and bridged them down to one.

of course you can choose to get each sub it's own amp or you can choose to pump less rms power to each sub.

[ozzy150]

WOW am i learning alot...you are correct they are DVC. So if i buy a 1200 watt amp stable at 1ohm i am in buisness huh. will do. Any diagrams on how to hook these up would be awsome.

Originally Posted by TIsTAN

you have two subs that can take 600w rms each, but what is the resistance value? i checked and these should be dual 4 ohms right? so depending on how you wire the voicecoils within one sub, and then wire the two subs together, the final resistance is what you will have to consider when choosing an amp.

if you wire the voicecoils in parallel to create 2 ohms and then wire the subs in parallel, you get 1 ohm. so you need to find an amp that puts out 1200w@1ohm. of course the amp has to be 1 ohm stable. only a mono amp will work here.

if you wire the voicecoils in parallel to create 2 ohms and then wire the subs in series, you get 4 ohms. so you need to find an amp that puts out 1200x@4ohms. most amps are 4 ohm stable and you can take two channels and bridged them down to one.

of course you can choose to get each sub it's own amp or you can choose to pump less rms power to each sub.

[ozzy150]

what is the difference between digital class X and Class D amps?

[ozzy150]

Originally Posted by ozzy150

what is the difference between digital class X and Class D amps?

And does it matter if the power supply is unregulated?

[TIsTAN]

if you don't have a preference, you can brand match the amp. mono means one channel so look for one of their amps that puts out around 1200wx1channel@1ohm. you can put a lil less or lil more, up to you. www.audiobahninc.com

parallel wiring means connecting all the positive terminals together, and negative to negative. series wiring means connecting one positive of one voicecoil or one sub to the negative of another vc/sub and then to the amp.

if you are going with the parallel-parallel wiring, you need to do the following
- connect the positive terminals of each voicecoil (on each sub) together, choose one of these positive terminals on each sub and wire to the positive side of the amp
- connect the negative terminals of each voicecoil (on each sub) together, choose one of these negative terminals on each sub and wire both subs to the negative side of the amp

when the power supply of an amp is unregulated, it means the power output will also be unregulated. therefore if your vehicle's electrical system is weak (ie less than 12v normally) then power output will be lower than quoted. if you make it stronger, you can get even higher output. for the most part, just get a regulated amp if you are new to this.

as for classes, not really up on it. basically a/b, d and i guess x now. it's about how the amp is normally off and always on. a/b is good for cabin speakers. d for bass, maybe x too. but you can use a/b for bass too.

[ozzy150]

I can't thank you enough for solid simple advise like this. Here is the amp that i got. MA AUDIO HK1000D 1000WATT DIGITAL MONO AMP It is 1000 watt RMS @ 1ohm. Class X unregulated power. I will make sure my TITAN gets a good ground kit put on, and also i will get a CAP to help push a solid flow of power to the amp. Thanks again. And any more suggestions are always apreciated, espcialy on how to keep the power strong to the amp.