ag0240

iTrader: (1)

i have two 10in type R subs in the zenclousers box. the amp i am using the the mrp-1000 watt v power alpine amp. the amp is 1000 watt by 1 at 2 ohms and 600 watt by 1 at 4 ohms. the subs are 4ohm subs so id be using the 600 watt dividing it by 2 making it around 300 each sub. my question is when i turn my gain to about halfway the subs start to clipp and sound bad. is this due to the fact that i have the wrong ohm setup with the subs and amp? apline does have the 10in type r sub that is at 2 ohms. what that let me turn the gains and lets these subs hit, becuase right now they are nowhere near hiting the way they should.

ProperID

How do you have them wired? If you have 2 4ohm subs wired in parallel, the amp will see a 2ohm load (and you would be splitting the 1000 watts between them). If you have 2 4ohm subs wired in series, the amp will see an 8ohm load (then you will really be starving the subs for power).

Which of these is how you have them wired:





Which zenclosures box are you using? The 2-10s box under the strut bar comes in 2 sizes. One is 0.75 cubic feet total and the other is 1.40 cubic feet. The TypeRs in a sealed box need a recommended 0.5-0.8 cubic feet each....so if you have the smaller box, you might want to consider stuffing the inside with polyfill to make the woofer perform better (I just did this with 1lb of polyfill in my zenclosure box for my IDQ10s and it was a huge improvement).

Also, what are you using as a head unit?

ag0240

iTrader: (1)

im pretty sure i have them wired in paralel. i am using the avic 90bt. im not sure what size my box is. my concern this that they clipp and i dont know why.

ProperID

If you have them wired in parallel, you prob don't want to turn the gain up that much. If you have the zenclosure box that fits under the strut bar and doesn't extend out past it (the bigger box has part of the box stickout out toward the front of the car and is covered by their amp rack), so that should tell you which box you have. It might just be that the small box isn't giving you the performance from those subs that you would like. That's where the polyfill can help.

Also, try to be conservative using the bass boost on the amp. (you should have it set to zero when you are setting the gain on the amp...not sure if you're using it or not) I've read "every 3 decibels of EQ gain causes the amplifier to try to put out DOUBLE the power at that frequency", so if you're using the bass boost (yours goes up to +12db), you could be asking the amplifier to make anywhere from 1,000 watts to 16,000 watts (which would definitely cause it to clip).

If you're still concerned that your amp is not delivering the power you are expecting, take a look at the power connections. What gauge power/ground wire are you using? Are you sure you have a strong ground connection?

ag0240

iTrader: (1)

so do you think the subs should work with that amp? i was thinking about getting the 2 ohms subs but i dont know anymore. i feel this amp makes these subs clip way to soon. i just dont get it. can an underpower sub clipp?

StreetOC192

iTrader: (7)

Your subs are dual 4ohm voice coil correct? So you want them to be wired in series from voice coil to voice coil, then in parallel from sub to sub..... like this:



^ That will show your amp a 4ohm load. If you have all 4 voice coils wired in parallel, you will be showing your amp a 1ohm load which is NOT good for your model amp and will probably be the cause for your troubles.

I had recommended the acoustastuff in your last thread about your subs.

Where are you in Jersey?

ag0240

iTrader: (1)

i live in somerset nj. so under a 4ohm load they should hit decently right? im guna take them apart when i get home an look at the wiring

StreetOC192

iTrader: (7)

Yeah, just make sure you are all wired up to show the amp a 4ohm load. If you are still having issues, I might be in the Somerset area soon and could help you out if needed.

ag0240

iTrader: (1)

im pretty sure im wired up like you said but what happens if i am and i am still having my problem of the sub clipping at halfway

ProperID

Do you have SVC or DVC subs? I noticed that the newest Type-R subs only come in DVC (but I think the older ones were available in SVC). edit: Looks like StreetOC already beat me to the SVC/DVC question...

Any amp can be driven to clip--"Driving an amplifier into clipping causes it to put out power in excess of its published ratings" But if you were clipping this amplifier at 2ohm, you would be pushing over 500 watts to each speaker (which I'm sure would be more than adequate to get the sound you want).

I think that amplifier should be able to handle 2 10s when everything is wired correctly. I'm running 2 10s in the same box as you with only about 3/4 of the power that your amp puts out. Of course, our expectations may be very different...what are you expecting from them? And how would you describe the sound coming from the subs before they start to clip?

ag0240

iTrader: (1)

yeah these subs are definitly clipping. its hard to explaine. in the cars with the door shut n the stero blasting, they hit hard. but if you where to open the hatch n doors you wouldnt evenknow subs where in the car. when the stero is at a normal level like 25, they dont even move.

ag0240

iTrader: (1)

the polyfill worked great thanks properID