Volfenhag ZX-8400 and 2 12" zx-4712

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=86807
Printed Date: May 13, 2025 at 3:06 PM

Topic: Volfenhag ZX-8400 and 2 12" zx-4712

Posted By: scottypwnage
Subject: Volfenhag ZX-8400 and 2 12" zx-4712
Date Posted: December 07, 2006 at 4:35 PM

I just bought a volfenhag ZX-8400 amplifier and 2 12" zx-4712 subwoofer's. Due to my lack of knowledge with the wiring and power output of the amplifier, i was looking for the best way to wire these up. Sorry for the lack of spec info on the products, i wasn't positive what was needed. Any input would be greatly appreciated.

Thank you,

Scott

Replies:

Posted By: jeffchilcott
Date Posted: December 07, 2006 at 4:40 PM

impedance of each woofer, if they are DVC or not

Specs on the amp

bridigable? channels? minimum load?

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Posted By: j_darling2007
Date Posted: December 07, 2006 at 4:57 PM

The subs are 4 ohm DVC an the amp is 2 channel bridgeable, or 2 ohm stable per channel. I couldn't find any rms wattage for him as I doubt they are published (just the peak were published).

Wire the subs like this and bridge them on your amplifier.

posted_image

This will be the only way to wire them since the amplifier is not 1 ohm stable.

Jacob

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There are 3 kinds of people in the world, those who can count and those who can't

Posted By: dabear1029
Date Posted: December 07, 2006 at 9:18 PM

I have a Volfenhag Zx-8400. Here are the RMS numbers that I found for them:

Bridged 4ohm: 600w x 1
Bridged 2ohm: Not Stable
Dual 4ohm: 200w x 2
Dual 2ohm: 300w x 2
Dual 1ohm: Not Stable
Peak Bridged: 2000w x 1
Peak 2-Channel: 1000w x 1

When I got my amp hooked up tested for the outputs, this is a little exaggerated, but rather close.

Hope this helps.

Swick

Posted By: dabear1029
Date Posted: December 07, 2006 at 9:22 PM

sorry, in the above post the last line should be
Peak 2-Channel: 1000w x 2

I also did a little bit of research on the subwoofers, here's the specs that I could find
Subwoofer Specifications:

    * Subwoofer Size   12"
    * Impedance   4 ohms
    * Dual Voice Coil   Yes
    * Peak Power Handling   1000 watts
    * RMS Power Handling   500 watts
    * Woofer Surround   Butyl Rubber
    * Woofer Composition   N/A
    * Sealed Box Volume   N/A
    * Ported Box Volume   N/A
    * Sensitivity   90 dB
    * Frequency Response   N/A
    * Xmax (millimeters)   N/A
    * Top Mount Depth   6-3/10"
    * Cutout Diameter   11-1/10"

I am sure that the RMS power handling is exaggerated a bit, more Volfenhag specs are.

Swick

Posted By: j_darling2007
Date Posted: December 07, 2006 at 9:35 PM

OK. That confirms what I found when i looked them up. Your best bet would be to wire them like that diagram I posted above. It is stable having a 4 ohm load bridged, so that is the only way I see to wire them.

Someone correct me if I am wrong though.

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There are 3 kinds of people in the world, those who can count and those who can't

Posted By: dabear1029
Date Posted: December 07, 2006 at 9:39 PM

That what I thought, I have too 4ohm DVC subwoofers hooked up to mine at a bridged 4ohm. Get's just about 600 watts, and have never had a problem with noice, or clipping. It's a pretty good sounding amp.

Swick