Comments, my new system
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=75875
Printed Date: July 14, 2025 at 4:22 AM
Topic: Comments, my new system
Posted By: mukrainetz
Subject: Comments, my new system
Date Posted: April 07, 2006 at 11:32 PM
I have just hooked up my new sub and head unit system and tested it out at a fairly reasonable volume and thanks to everyone here works as good as expected. The box took some final finessing to get to fit with the back seat up and my steel amp rack had to be torched back into shape and re-bent to fit behind the hatch. I have not finished the box or rack yet as it will be coming out in a couple of weeks for our vacation. I have wired everything as recommended by the various guides and input on this site but still have a couple of questions. My amp again is a Volfenhag zx-8400 with a posted 2000w (600w rms bridged) supply and the subs are two 12 inch Volfenhag 1000w (500w rms). I have bridged the subs and run the in series (I think). I tested the resistance on the subs and its 3.8 ohms (they are 4 ohm DVC subs) is this decent? Also, I have adjusted the gain to about halfway and the bass boost on the amp itself to about half. It has a remote bass boost controller but I can turn it all the way up or all the way down and it doesnt seem to make a difference, does this have something to do with the bass boost setting on the amp? Does it need to be turned all the way up to control it from the remote? The head unit is a 2006 sony cdx-f605x specialty series piece which sounds awsome and also has a subwoofer bass control in the menu. On the diagram for the H/U the rca's with the leads out the back are subwoofer leads but it doesnt show an amp in the diagram just a sub, does the subwoofer bass control on the H/U control this? The audio out on the back of the H/U is what I have run to my amp. I have included two photos of the setup please comment and / or ask any questions. I would like to post more photos of the whole thing but dont have enough posts yet. 

Replies:
Posted By: coppellstereo
Date Posted: April 08, 2006 at 12:01 AM
I would really like to see more pics of this amp rack! and closer of your setup!
Looks cool!
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Posted By: geepherder
Date Posted: April 08, 2006 at 4:38 PM
3.8 ohms DCR (dc resistance) per voice coil is fine. Do a search in this forum (upper right of this screen) on setting gain and bass boost. Do you have a link to your bass control knob? Also, how is this hooked up? It's just a simplified diagram. Yes, the sub bass controls in the head unit will control these outputs. ------------- My ex once told me I have a perfect face for radio.
Posted By: mukrainetz
Date Posted: April 08, 2006 at 9:14 PM
The bass boost control on the amp itself is the same control for the gain and other filters, a recessed rotary control. The remote bass control has a cat5 or similar cable run from the amp to under my dash, the LED on the remote is lit when the ignition is turned to "acc" or "on" so I know its getting power but like I said, it doesnt seem to do anything. So the leads to the sub as per the diagram - the subwoofer bass control on the H/U then uses its internal amp to power the sub and the "audio out" connections are 'pre-amp' then? So I do have it hooked up correctly. I have read quite a bit about setting the gain, I will have to refine it a little better at some point but I cant have the system full blast where I live - guess I could take it out somewhere else. The whole idea of this setup was to conceal it unless necessary like a car show or something. I have a sponsorship and would like to take it to car shows this spring/summer but dont need someone ripping off a huge system thats displayed right out in the open. My wifes car has been broken into 7 times in the past two years - i dont need that. I will post more photos shortly, please note though that it still needs a lot of finishing.
Posted By: stevdart
Date Posted: April 08, 2006 at 9:34 PM
It looks like your bass remote simply doesn't work. If it worked, its function should be totally different than the bass boost set screw on the amp. The set screw, when turned up to any degree, boosts a band of frequencies usually centered on about 45 Hz. The remote bass controller is not really a "boost" in the same way...it doesn't select a band of freqs to boost. Its function is to lower the sub bass response; all the way up is full sub bass output, attenuated down to varying degrees lowers the sub volume in relation to the rest of the system. When it works it can provide a better overall system quality depending on the types of music you listen to. All the way up to be obnoxiously loud, slightly attenuated for rap, more attenuation for blues, all the way down for bluegrass ;)
------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: mukrainetz
Date Posted: April 19, 2006 at 11:07 AM
I took me forever to find my posts but I would like to add a couple pics - my net connection was hooped so I hope some of you are still following this thread. 
My new sony H/U less trim ring, add in later post. I have built a lexan filler which will be lit by LED from the back of the deck coming on with the switched power supply. 
The bass remote, after hours of running wires through the carpet, dash, seats etc etc I find out its defective. It does have a kickass blue LED on it...... 
This sort of shows the amp rack, a little dark, I migh have to take a better photo, the other photo I have of the rack i cant make small enough to post. Again, the amp rack are two bent pieces of steel fixed to the top and bottom of the box, right now they are just screwed in but I will have brushed or polished aluminum on the top and the box will be carpeted or painted a blue. Its so tight between the wheel tubs that I dont think I can get carpet in there. If you want a couple larger photos please email me or reply to this post (mikeukrainetz@hotmail.com) 
This is just a photo of the Neon switch in the console, it lights up the neons under the dash and seats. So post comments, the more the better.
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