How much WRMS with a 1.5 Ohm load?

[ilovesplandsq]

Hey Guys.

I have a pair of JL Audio 8 Inch W6-D4's. These two drivers require 200 WRMS EACH and have DUAL voice coils.

I want to wire the coils AND the drivers in Parallel as diagramed by JL Audio themselves to present a 1.5 Ohm load

The specifications of these drivers are as follows:

Pt (Continuous thermal power handling): 200 WRMS

Re (DC resistance): 10.6 OHM (in series)

Znom (nominal impedance): 6 Ohm

Voice coils: 2

My questions are the following:

If what I have read and discovered is correct, wiring both of the drivers in the above mentioned configuarion will give me a 1.5 Ohm load. Is this correct?

AND, if so... With the below mentioned Amp, if I do have a 1.5 Ohm load, driving them from one amp with the following Specs would give me a total of 525 WRMS X 1, or 262.5 X 2????????????????

Amp: Alpine MRD-M301

350 X 1 WRMS (2 Ohm @ 14.4V)

175 X 1 WRMS (4 Ohm @ 14.4V)

The conclusion I drew is that with a resistance with this Amp at 1.5 Ohms, the Amp will produce 525 WRMS. Am I correct?

Also, just a quick one... is 14.4V produced when the engine is on, and is it only 12V when the engine is off?

Thankyou to anyone who replies...

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[ANeonRider 10+ year member]

if they are D4's, then the impedance is not 6 ohms, its 4 ohms. Therefore the load you can get is 1 ohm, or 4 ohms. No matter what, you cannot run Alpine mono amps below 2 ohms.

Also, your car when on, is theoretically at 14.4V (but never is), and when the key is off, at 12V.

 

[rippinitup7 10+ year member]

i second that on the 1 or 4 ohm load for the pair. that amp is not going work for those two subs.

you could wire one sub in parallel to that amp for a 2 ohm load and it would power it fine.....but thats about it.

 

[n2audio 5,000+ posts]

...your car when on, is theoretically at 14.4V (but never is)...

Some are, some are even closer to 15.

 

[ilovesplandsq]

hey one problem, not to argue, but it says on the box the subs came in AND on the web site that they are 6 ohm. remember that these are D4's and are probably 3 years old now, perhaps new W6's are 4 ohm? and therefor these amps WILL run of this amp. thoughts???

also, i may be able to wire the subs differrently to gain a different oad that would be 2 ohm or higher, would this work?

any help would be appreciated, this is driving me nuts!

ta guys...

 

[rippinitup7 10+ year member]

hey one problem, not to argue, but it says on the box the subs came in AND on the web site that they are 6 ohm. remember that these are D4's and are probably 3 years old now, perhaps new W6's are 4 ohm? and therefor these amps WILL run of this amp. thoughts???
also, i may be able to wire the subs differrently to gain a different oad that would be 2 ohm or higher, would this work?

any help would be appreciated, this is driving me nuts!

ta guys...

you say they are d4's....D4=dual 4 ohm, but then you say 6 ohm too. thats making this confusing...

but...

after looking at jl's subwoofer line up, it appears the 8w6 only came at a dual 6 ohm, never dual 4 ohm.

so...

assuming they are dual 6 ohm, you can wire them both to either 1.5 ohms, or 6 ohms. so again, your amp isn't going to work for this setup. the dual 6 ohm subs work best in a configuration of 3 because then you can wire them at 1 or 4 ohms and its easy to find an amp for that setup.

 

[ilovesplandsq]

oh, starting to make sense.... any ideas why they say 6 ohm???? pretty weird..

so, in summary, i need an amp that will reciprocate with the subs @ 1.5 or 6 ohm, yes?

hey btw, i like ur stez setup but i LOVE your car! id love grand cherokee's!