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I think i have a problem

 

New member
Username: Ericclapton

Post Number: 1
Registered: May-05
i just bought a new infinity REF1211A amp and is rated at 1300 rms at 2 ohms and i got 2 infinity REF1242W subs. the subs have an rms of 300 watts each. i was wondering if there was a good chance that i will blow the speakers. is there anything that i can do? please help
 

Silver Member
Username: Fordpwr

Los angeles, CA Usa

Post Number: 241
Registered: Dec-04
just turn the gain down a bit
 

New member
Username: Ericclapton

Post Number: 3
Registered: May-05
the gain or the input level, cuz i dont think it has a gain
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 538
Registered: Nov-04
The level imput is the gain. Tell me the impendance of the speaker and ill come up with the best way to wire it.
 

New member
Username: Ericclapton

Post Number: 4
Registered: May-05
http://www.infinitysystems.com/caraudio/product.aspx?ProdId='REF1211A'&Ser=REF&Cat=AMP

go here and look at the amp and the speaker outs, its kind of confusing
 

New member
Username: Ericclapton

Post Number: 6
Registered: May-05
Specifications
MSRP U.S. $: $129.95
Power Handling, RMS: 300 Watts
Power Handling, Peak: 1000 Watts
Sensitivity: 93dB
Frequency Response: 23Hz - 400Hz
Mounting Depth: 5-1/16"
Impedance: 2 or 8 Ohms

 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 540
Registered: Nov-04
So The subs are DVC 4+4?

your gonna wanna wire it like this

http://www.rockfordfosgate.com/rftech/wiringwizard.asp?WoofQty=2+woofers&WoofImp =Dual+Voice+Coil+-+4+ohms+x+2&image.x=7&image.y=5&image=Submit

The second one down, that way you will get a 4ohm load and each sub will get 325 watts.
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 541
Registered: Nov-04
Im sorry the links not workin right just put in 2 woofers and DVC 4 ohm x 2 and it will be the second one down and it will be a 4 ohms load.
 

New member
Username: Ericclapton

Post Number: 7
Registered: May-05
how will it sound?
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 542
Registered: Nov-04
wait a minute is this the same guy that was called like fairly new to this or somethin like that?

and sorry for the mistake it will be 400 per sub.
 

New member
Username: Ericclapton

Post Number: 8
Registered: May-05
no, what kind of sub would u reccamend for my amp... 2 12 inchers?
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 544
Registered: Nov-04
https://www.ecoustics.com/electronics/forum/car-audio/137305.html

Read over this. And look at the problem we had with that amplifier.
 

New member
Username: Ericclapton

Post Number: 10
Registered: May-05
that all didnt make any sense to me, it was very confusing lol

so what kind of subs would u recamend for this amp?
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 545
Registered: Nov-04
OK this what you gotta do, I read over it and now understand. Wire it the way i told you to one Block. It will slighty overpower the subs but it should be fine. Or you can wire each subs voice coils in series to get a 8 ohm load and put one sub on each block and it will be 200 watts per sub.
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 546
Registered: Nov-04
Um what kind of subs? 12 like you asked would be fine and DVC 4+4 with 400 watts RMS. Or you can use the ones you were gonna use.
 

Silver Member
Username: Fordpwr

Los angeles, CA Usa

Post Number: 246
Registered: Dec-04
I own the Infinity 1210a( i think its lasts year's or something) All I can say is that nthis amp will put a little over its advertised power rating. No bull sh1t.
 

Bronze Member
Username: Ericclapton

Post Number: 11
Registered: May-05
so what do u recomend i do, i dont want to blow my subs, and i like what i got, and if i should get new subs, what should i get? 12 inches

also, thanks a lot for all of the help, it is greatly appreciated
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 547
Registered: Nov-04
Yes 12 inch subs are fine, Ok the simplest thing you can do is buy 2 12" single voice coil 4ohm subs with 400-500 rms and hook up one sub on each block.
 

Bronze Member
Username: Ericclapton

Post Number: 12
Registered: May-05
hey, what is the differeence between dual and single voice coil?
 

Silver Member
Username: Araknid

BOCA , FL U.S.

Post Number: 549
Registered: Nov-04
oh man..... The difference is single voice coil subs have 1 voice coil and can only be wired 1 way and called SVC for short. and Dual voice coil subs have 2 voice coils and can be wired 2 ways and called DVC for short.

examples

DVC 4+4 can be wired at 2 ohms when the voice coils are wired in parallel and 8 ohms when the coils are wired in series.

SVC 4 ohm can only be wired at 4 ohms
SVC 2 ohm can only be wired at 2 ohms
DVC 2+2 can be wired at 1 or 4 ohm

now remember you can wire two subs together which is more difficult to calculate off the top of my head but an easy one would be.

2 SVC 4 ohm can be wired 8 ohm series and 2 ohms parallel.

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