Question about MA Audio Car Audio & Video

# I have 2 18"compation speaker ma audio xl 180 4 ohm speaker.y the visonic amp act like its not getting power.keep cutting off

I had speaker hooked up in seres pos neg pos neg keep cutting off.does it take 17 volts to get 4000 watts out this amp.will it push the 2 18 speakers

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Posted on Jan 02, 2017

SOURCE: crate spa 400

you might need to see what your volts are if there 14.4 at the amp thats good but see what they drop to ....

Posted on Jan 01, 2008

The easiest way to think of wiring voice coils and subs is this:

• Two items of the same impedance in parallel = Half of the impedance
• 4 ohms in parallel with 4 ohms = 2 ohms
• 8 ohms in parallel with 8 ohms = 4 ohms
• Two items of the same impedance in series = Double the impedance
• 4 ohms in series with 4 ohms = 8 ohms
• 8 ohms in series with 8 ohms = 16 ohms
In this case, you want to wire two subs, each with dual 4 ohms voice coils, so that the total equals 2 ohms. Your options are:
• DVCs in parallel, 2 subs in series = 4 ohms
• DVCs in series, 2 subs in parallel = 4 ohms
• DVCs in parallel, 1 sub = 2 ohms
With two, dual 4 ohm subs, you can only have 1 ohm or 4 ohm total impedance.

Posted on Mar 17, 2008

SOURCE: Kenwood KAC-9152D monoblock

The amp says it's 1 ohm stable, so assuming the DVCs are dual 4 ohm, you should be able to connect all "+"'s together and all "-"s together, like the picture below:

As for the amp shutting off for a few seconds, it sounds like it's either:
A) Not getting enough power at high volume.
OR
B) Overheating.

The cap on the +12V to the amp should help, but putting a meter on the +12V might tell you whether it's dropping too low (<11V).

When you first turn the volume up, how long does it work fine before shutting off? Is it with the vehicle running or not?

Posted on Mar 25, 2008

SOURCE: my amplifier keep clipping

Posted on Jul 06, 2009

Placing the speakers next to each other face down, you will notice that the connection points run in sequence +- and +-. Now connect the - (negative) from the one speaker, to the + (positive) of the other speaker. Now connect the open + from the one speaker and the open - from the other speaker to your amp. Your amp should have a bridging indication. On the connection points of the amp, you should see a mark pointing to the first + and the last -. That will be your bridge and thus utilizing the full potential of your amplifier

Posted on Jun 09, 2010

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