Question about Phoenix Gold QX 4075 Car Audio Amplifier

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Connection how do i connect my amp to my bass box and car stereo

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There's no simple answer. You need to understand what you're doing so you don't create a fire hazard. Read through the following page. It should help. If you have specific questions, let me know.

Basic Car Audio Electronics

Posted on Jul 16, 2008

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I have a 04 Silverado and the stereo always sounded great a lot of bass and clear. I got in one day and it sounds like the bass is off. I assumed it was the factory amp and replaced it and is still the...

could potentially be a blown fuse in your trucks interior fuse box. I had a loose ground connection from mine and i hit a bit bump one time while driving and kept blowing the fuse when the connection would break. maybe worth checking those if u havent already

May 25, 2014 | Car Amplifiers

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How do you hook up an Alpine Amp 1000 watt mono

I can only tell you the way amps are usually set up because you haven't given much details. If you need to know anything else just ask.
It's always smart to disconnect your battery before installing accessories and if you put the effort in to properly terminate and support all your wires it will last much longer with less hiccups, try and use carpet along the edges of the floor to hide your wiring.
Find where you are going to mount the amp and sub, Usually under one of the front seats is ideal for the amp and in the boot for the sub. With my older vehicle (landrover ute) i mounted the amp to the sub box and then the sub box to the tray. Make sure however when you mount them that they are securely fastened
Then you will need main power wires. Usually three terminals next to each other. One positive (live), one source (or control/antenna), one negative (earth). You'll need around 2 or 0 gauge wire to handle an amp like that, one from the battery positive to the amp positive (it would be recommended to have an in line fuse on this wire, they're sold at most car audio places. For 1000 watts you will need an 85 amp fuse), one from amp earth to an earth point on the car (anywhere metal connected to the chassis). The antenna wire will need to either come from the antenna cable on the back of your head unit (usually blue, Try to use wire with a similar diameter to this wire) or a positive wire with a switch on it. I ran it off the antenna cable on the head unit but i have a switch in the middle of the wire so that it turns off with the car but also with the switch, incase i didn't want the sub for some reason (alot of radioplay doesn't have good bass lines)
Next you'll need your Audio in. This is usually 2 rca plugs (red and white audio sockets) you'll need a stereo rca lead long enough to reach the amp (some songs use different channels for the bass so stereo guarantees that you will get all the bass lines).
Last but not least you will need to run your audio out to the sub box. This will be 2 terminals similar to your power ones labeled with a horse shoe image, a number and + or - (refers to OHMS). Use a good quality figure 8 speaker wire to connect these up. Make sure to keep negatives and positives seperate. The wire will have colours to help you distinguish each line, the sub will be run from the back of the cone to the sockets on the side of the box (internally), these will also need to be kept true to positive and negative.
Good luck and let me know if you need more help.

Feb 07, 2011 | Alpine Car Amplifiers

1 Answer

Just bass through speakers attatched to amp

there is probably a switch that says lpf-full-hpf those are your low pass filter(only low tones) full which is all ranges of sound and high pass filter which when you want to hook up a set of mids or highs I hope that this helps u out

Apr 01, 2009 | Car Amplifiers

1 Answer

Thumping speakers - no power light is on - wired correctly

the amp is going into protect mode due to something wrong in the amp or some thing in the wiring to it ooh yea if you are getting 18v power to the amp that is way to high it should not be higher then 15v if the amp is in protect mode it will not play at all.

Nov 02, 2008 | Visonik Dual Bass Box with Amplifier Car...

1 Answer

Amp Power light will not go on. Protection light is lit- Thump sound in speakers

It probably has shorted output transistors. To eliminate other possible causes, read through the following page.

Amplifier in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Oct 31, 2008 | Visonik Dual Bass Box with Amplifier Car...

1 Answer

Bass control stopped working

on rockford amps, the bass control knob needs to be connected to get the maximum output (+18 db gain i believe). If you did this to the power wires, then yes, you may have at least damaged the bass control knob. Try replacing this to see if you get all of your gain back. If not, then you have damaged something inside the amp...maybe a capacitor or power supply inside. If that's the case, you'll need to get the amp looked at by an electronics repair technician or local stereo shop.

Aug 10, 2008 | Rockford Fosgate P3001 Car Audio Amplifier

1 Answer


short in the system, or bad ground, or connections?

Oct 22, 2007 | Pioneer GM-5200T Car Audio Amplifier

2 Answers

Powers on but no sound

Check the main amp fuse under the hood, even if it looks good just change it. Often times that light on the amp can come on just from the power amp tunon wire. Try a friends subwoofer box just to make sure the connectors on your box are good, and if that doesn't work then give me some more details....year/make/model of car, what kind of sub, what types of things do you see on the side of the there a green light as well as a red light?

Aug 18, 2007 | Xtant A3001 Car Audio Amplifier

1 Answer

Protection mode override

If you have your subs wired to the amp in a bridged configuration, try wiring one to each stereo channel instead. Also, make sure your ground wire is secure and connected to a clean, solid metal part of the vehicle body with the paint scraped off. If this doesn't work, disconnect both subs and try connecting only one at a time; one of the subs may have a problem that is shutting down the amplifier.

Mar 11, 2007 | Sony XM-2002GTR Car Audio Amplifier

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