Question about Visonik V408XT 250W x 2 Car Amp Car Audio Amplifier
I just purchased a Visonik V408XT. I have hooked it up to an MTX Sledgehammer box with 3 - 10" Thunder 4500 subwoofers. The box is wired up to one channel at 4 ohms. It has an RMS rating of 635 watts.
I purchased this amp because the bridged power is 800 X 1 @ 4ohms. What I was told is - using an amp that pushes more power than the RMS power of your subwoofers was a good thing. I was told that by doing this, it would eliminate the amp "overheating" because it could "push more, but didn't have to work so hard, which in turn would not overheat the amp". I had this set up installed by circuit city.
I do not have the gains turned up to the max at this point. Currently, they are about halfway. I have used 4 gauge wiring from the battery to a 1.2 farad Tsunami capacitor. (The capacitor is usually between 12.1 & 13+ volts) From the capacitor I have 8 gauge wiring powering the amps. (I also have a Visonik 204XT 4-ch amp that is running the components and coaxials, and it seems fine) I have 4 gauge ground wire as well, with 8 gauge ground wire routed through the capacitor to the amps. Looking at it, the ground doesn’t seem to be very good. They grounded it to a spot in the trunk, but it doesn’t look like they removed hardly any paint from the spot they grounded at? I’m not sure if that makes a difference?
My problems that I am having are –
1. The amp gets EXTREMELY hot after about 20 minutes of continuous play?
2. When I am listening to it at any level, I hear a popping noise or a flicker noise when I push the button to roll down my car windows. Or if I push the sunroof button, to open that, it affects the amp. It also makes a noise if I hit the power door locks button.
3. When I turn on my car, the sub amp makes a sudden “thump” noise? As if a sudden jolt of music is going through it? (but nothing is on yet, no music playing or anything) Its like it happens when it powers up or something?
I hope I have provided enough info to hopefully get my questions answered. I don’t want to have to take my car back to the shop if it’s a simple fix?
Thanks so much!!
I have the same amp that i just bought but mine dont do that. do you ever think that youu are a dumbshit and didnt know what the ******** were doing.
Posted on Jul 23, 2009
1) Visonik= ewww... i had a kit of theese and ew. i tried to call em, email them and notthiiing ever worked.
2) amp needs its space.
3) try little fans.. u can search in audio stores, they are arround 6 bucks each. not any fan, but AMP fans.
4)check rca's. ur power and rca cant be in same side.
5) seek profesional install if it doesnt help out..
Posted on May 24, 2008
First i have to ask if you ran the rcas on the same side as you did your power wires. that would result in the interference you're recieving. the rcas should be on one side of the vehicle and the power wires on the other. if you're unsure of the grounding site then take the time to properly clean it and reinstall. also understand that you amp having adequate breathing room is very important. without enough airspace your amp will surely overheat.
Posted on Dec 05, 2007
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Posted on Jan 02, 2017
Hi jimmyjames, How do you have the wires hooked from the sony reciever to the inputs on the mtx? Sounds like your Remote wire is way too big. it should be 14 guage. It only sends a low voltage low amp signal. Another thing that could be messing up the sounds is the routing of the wires. you should have the power supply wires separate from the Audiop signal wiring. Power should run down the Driver side and Audio down the passenger side. When you answer I may be able to tell you more.
How do you have the wires hooked from the sony reciever to the inputs on the mtx?
Sounds like your Remote wire is way too big. it should be 14 guage. It only sends a low voltage low amp signal.
Another thing that could be messing up the sounds is the routing of the wires. you should have the power supply wires separate from the Audiop signal wiring. Power should run down the Driver side and Audio down the passenger side.
When you answer I may be able to tell you more.
Posted on Oct 19, 2007
hello ..try this ...www.eserviceinfo.com...takes a bit of working out how to get them .when you do .you have to download bitzipper (these are a rar file)...then adobe 8 ..bitzipper can convert to a pdf flie so you can read them...hope you have some luck
Posted on Feb 12, 2008
if the lights on and there is no sound it's either a cd player issue or your rca issue or the inputs for rca's on the amp are no good. or you have your subs wired at a wrong load to your amp and it is in a constant protection to avoid burning up.
Posted on Jun 14, 2009
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