Alpine PDX amp update
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=79213
Printed Date: July 07, 2025 at 4:56 PM
Topic: Alpine PDX amp update
Posted By: tcss
Subject: Alpine PDX amp update
Date Posted: June 16, 2006 at 5:37 PM
Finally fired up our BMW M-3. It has an Alpine IVA-D310, PXA-H701 processor, (2) PDX-1.1000s, PDX-4.150, (2) pair JL ZR-525csi and (2) 12" W6V2 in a custom fiberglass enclosure. There were some questions here about the power ratings on the PDX amps. Disregaurd those questions, these things CRANK! We are still tuning this thing, but right out of the box it sounded amazing. I think when all is said and done it will be the best SQ car that has ever left this shop. Hamfist, come and gettum'!
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There is no such thing as free installation!
Replies:
Posted By: dwarren
Date Posted: June 16, 2006 at 11:17 PM
Sounds good there, but I need some in person confirmation. Perhaps you should make an appearance at the next 12volt gathering.
I'd like to play with that h701, thats for sure. Who likes Eclipse any way, bunch of flea market crap.
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Posted By: haemphyst
Date Posted: June 17, 2006 at 1:13 AM
OK, Bob! Lemme know how much for 2 1.1000's for the subwoofer, and 2 4.150's for the doors! Two of those thousand watters drive the SW9122 pretty good, ya think?
Ow... Dan... flea market crap? wow... 
For sale! Eclipse amps! DA7232 2 channel, 34230 stereo, 32440 4 channel, 3122 stereo amps... PM me for prices! ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: Steven Kephart
Date Posted: June 17, 2006 at 2:21 AM
I'd still like to bench test one to see how much power supply sag there is. They are just so small. I got one of our demo units to cut out with a pair of 10W6's running at 1 ohm. There's one going into a customers Hummer at work right now, so I will see how they do in a proper install.
Posted By: tcss
Date Posted: June 17, 2006 at 12:21 PM
Steven, I've learned that anything a fraction below 2 ohms is death to Alpine D block amps. A 10" W6V2 actually is 1.8 ohms with the coils in parallel and it shuts off all of my Alpine demo amps. The 12" W6V2 measures 2 ohms exactly ( I don't know why ) and the amps have no problem. Dave, I'll PM you with prices and they are in stock. Guys, lets do the get together, times a wasten'. I've even conviced the fiance to leave for the weekend. Good times are between now and the third week of July. Dave, Dwarren, Dyohn,Forbidden, Velocity and any body else who wants to come to Caly, get off your butts it's time to make this thing happen! First round is on me! ------------- There is no such thing as free installation!
Posted By: Steven Kephart
Date Posted: June 17, 2006 at 12:43 PM
Are you using a multimeter on ohms to measure that resistance? Because if you are, then you are measuring the DC resistance. Impedance is an AC resistance that varies with frequency, and nominal impedance (what the subwoofer is rated at) should be the lowest resistance the subwoofer will go. If rated correctly the nominal impedance will be higher than the DC resistance. That's why most 4 ohm rated speakers have a DCR of around 3.2 ohms.
Posted By: tcss
Date Posted: June 17, 2006 at 1:37 PM
Didn't know that Steven, but thinking about does make sense. But why would the 10" W6V2 read differantly then the 12" when they are both rated the same? You should join us at the 12 volt first annual get together/BBQ. ------------- There is no such thing as free installation!
Posted By: haemphyst
Date Posted: June 17, 2006 at 1:58 PM
4th of July weekend! Mine is open, free, and I have Monday the third off! Sound off, y'all! Dan, Dave, you guys can ride with me! Save gas money! I'll bring the tequila and sam DAMN fine wine!
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: dwarren
Date Posted: June 17, 2006 at 2:07 PM
haemphyst wrote:
4th of July weekend! Mine is open, free, and I have Monday the third off! Sound off, y'all! Dan, Dave, you guys can ride with me! Save gas money! I'll bring the tequila and sam DAMN fine wine!
Ok, what day? Some one needs to finalize it. Ten bucks says David will be busy. -------------
Posted By: tcss
Date Posted: June 17, 2006 at 2:16 PM
Ouch! No can do that weekend ( have the fiance's kid ) How about the weekend after? Arrive Saturday afternoon, leave Sunday? The water in the pool is 81 degrees, the ice chest will be full!
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There is no such thing as free installation!
Posted By: haemphyst
Date Posted: June 17, 2006 at 6:05 PM
tcss] wrote:
Ouch! No can do that weekend ( have the fiance's kid ) How about the weekend after? Arrive Saturday afternoon, leave Sunday? The water in the pool is 81 degrees, the ice chest will be full!
OK... the following weekend is OK as well. I am in. All we need to do is get actual NAMES and responses from others! I'll be there with bells on my tequila! LOL ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: tcss
Date Posted: June 17, 2006 at 6:25 PM
Come on guys, step up to the plate, who's in?
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There is no such thing as free installation!
Posted By: Steven Kephart
Date Posted: June 18, 2006 at 12:55 AM
tcss]< wrote:
>Didn't know that Steven, but thinking about does make sense. But why would the 10" W6V2 read differantly then the 12" when they are both rated the same?
I find that strange as well. I would expect JL to use the same exact coil on the different driver sizes.
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