canuckerjay

You guys are STILL helping me, believe it or not!

I can't find much on Kaption amps. So, stopped into a JL dealer today. He recommends the XD600.1, which he says should be wired in parallel, then wired to bring it down to 2 ohms per sub, which he says should throw more than enough power at each sub.

I'm hoping to pick up an amp this weekend. . .but I've never used JL before. Heard great things about their subs; don't know thier amps at all. Thoughts on that amp? on the dealer's assertions?

Denonite

iTrader: (1)

^^you have 2 voice coils per sub that are 2 ohms each...there is no way to bring the load down to 2 ohms on one sub by wiring parallel, series or any other way except by only hooking up one voice coil (which is not recommended by Alpine). Either the dealer misunderstood you, or he/she does not understand wiring. Your wiring has to be either: each sub wired parallel for a 1ohm load (2 ohms + 2ohms parallel= 1ohm), and then both wired in series to one another (1 ohm + 1 ohm series= 2ohms final load)....or...each sub wired in series to 4ohms (2 ohms+ 2 ohm series= 4ohms) and then both subs wired parallel to each other to deliver a 2 ohm final load...really doesn't matter how you end up at 2 ohm so pick one. Secondly, why would the dealer recommend a 600 watt amp for 2 subs that can easily handle 1000 watts rms? Don't get me wrong, it'll sound fine and get plenty loud with 300 watts each, but the best match would be an amp closer to the total rms of the two subs to get maximum output if you desired. Also, I'm suspect of the dealer's knowledge, as he states the amp should be wired parallel...the speakers determine the load and are wired in certain configurations...the amp could care less how they are wired as long as it's able to drive the load properly. Sounds like he wants to sell you whatever he has and can make a quick buck on...even with just one of those subs that amp would be a less than optimal choice as it delivers 400 watts rms into 4ohms and is not stable into 1 ohm...the sub is rated for 500 rms and honestly they can handle much more (I've owned a few of that version and the current version).
If you want a jl amp look at the jx 1000/1d (1000 watts at 2 ohm mono) or the more expensive slash 1000/1v2 (1000 watts at 1.5 ohms to 4ohms).

Allan74

iTrader: (-1)

Fair enough.

Could you remind me again what an 8 ohm voice coil, a 6 ohm voice coil and a dual-1.5 ohm voice coil subwoofer, with all voice coils connected in parallel together would yield ? (8 ohm + 6 ohm + 1.5 ohm + 1.5 ohm, all parallel=)......
Would you also mind sharing your math ?
Thanks for your help.

Allan74

iTrader: (-1)

Edited above to ask you to SHARE YOUR MATH.....as I wouldn't want you to try 'outsmart' me using an online impedance calculator.

Let's see your method/formula/equation.

DnK

iTrader: (1)

holy **** buddie like give it up

Denonite

iTrader: (1)

just ignore him, and for general knowlwdge the calculation for multiple impedance for parallel circuits is quite simple: calculate amps first and then ohms as per ohm's law, in this case: 1volt/8 ohms +1/6 +1/1.5 +1/1.5= 1.63 amps (using 1 volt as your reference voltage..you can use whatever voltage you want as long as you use the same amount all the way through), you then use 1 volt again and divide by the 1.63 amps to get 0.61 ohms final load. Your final load should always be less than your smallest ohm rating, if it's not you did something wrong (remember you're adding more components in a parallel configuration which means more current flow at a set voltage, therefore the impedance has to be lower).