Question about Reality VRA2.0 Car Audio Amplifier

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We tried adjusting the VR2.0 bass amp gain but it barely pushes sound before reaching 20 or more and cuts off. I have 6 speakers but wired it just using 2 cables. Can that be an issue?

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Not enough info 1). What is the impedence load of the speakers? I'm assuming you've wired three per channel. 2). Is your amp stable at 4/2/1/ or very rarely .5 ohms. Check the owners manual for the info.

Posted on Jun 25, 2009

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Posted on Jan 02, 2017

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You can put just about any instrument through any amp. The difference in sound will be whether or not that amp was designed for the particular frequencies of that instrument. Also whether or not the speakers you are using are designed for those frequencies. When playing bass you need speakers designed to carry low frequencies (40 - 400 hz); mid-ranges and tweeters don't cut it. Set your instrument volume on the guitar at 70 - 90 % to get the most signal from the instrument. Set output volume on the amp at 50 - 70 %, then adjust gain on the amp to get required sound level. You're not likely to blow the amp, but you could blow the speakers if the amp delivers more power than the speakers can handle. With a micro amp check the output rating. It's possible you may not have enough power to get the sound you want and as you turn up the gain the sound will distort.

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It sounds like you have your gain to high. best way to solve this is by turning the gain way down to - or lowest number , then turn everything on and upto the volume you desire, then slowly up the gain. also avoid using bass boost, I agree it sounds great but it puts strain on the amp and shortens life in the amp. with the bass boost off, you can adjust others (not the gain) to get bass.

Hope this helps

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How to adjust Dg11100 car amp


If your head unit has an amp gain, turn it up as high as it will go. If it is hooked up to subs, the head unit will say subwoofer output in the menu. Then take a small screwdriver and turn the amp gain on the side of your amp counterclockwise to zero. Turn your freq. up to about a third. Crank your system up, with a song with good bass, and slowly turn your gain up till the bass from the subs sound distorted, and back it back down. If the bass is drowning out the other speakers in your car, then turn the gain down some more. I find it works best if you have your trebble up high, your mid range at a little less than half. And your bass at zero or one. Your amp is cranking up the bass, so let your other speakers handle the rest. This allows it to sound clearly at higher volumes.

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Are you sure you don't have any shorted wiring or defective speakers?


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best way to do this to preserve your amp and speaker is to wire the speaker Voice coils in series.

VC1 = Voice coil 1

AMP + to VC1 +
VC1 - to VC2 +
VC2 - to Amp -

Set you amps bass gain down very low. Crank up the volume with a bass test audio track. Turn the switch to LPF or Low pass filter. Adjust a LPF to about 60 hz Adjust the bass gain up until your Sub begins to sound sitorted or choppy. Then tune the bass gain just below where it distorts. Then you are set.

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1 Answer

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Hi JJerky,

I suggest we go for 2 ohm to preserve the amp and not heat things up so bad.
Your Subs are Dual Voice Coil(DVC) and 2 ohms each coil. I am going to tell you the wiring to insure you get balanced response from both Subs. We will wire the Subs Voice coils in Parallel to make them 1 ohm each. Then we will wire the Amp to the subs in series to make the total load on the amp 2 ohms. When you have series to both subs each sub gets the same current.


Example of my coding :SUB1VC1+ = Subwoofer 1 Voice Coil 1 Postive terminal.

SUB1VC1+ to SUB1VC2+
SUB1VC1 - to SUB1VC2-

SUB2VC1 + to SUB2VC2 +
SUB2VC1 - to SUB2VC2 -

AMP + to SUB1VC1 +
SUB1VC1 - to SUB2VC1 +
SUB2VC1 - to AMP -

This should give you a good repsonse.

Adjust your Bass Gain down very low at first. Also cut you LPF to about 60 hz. Crank up the volume on a bass test Audio track, Adjust the Bass Gain up unitl you get distortion. The turn it back a little. This is proper setting for your Gain.

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Soung prob


Tune the gain on your amplifier powering the sub. Turn the Bass Gain on the amp all the way down and crank up your system to as loud as you can stand. Adjust the bass Gain until the Speaker begins to distort, then back off a little bit. This way you can crank it up and not get Bass Distortion early.

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