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Mac audio mac attack 600, 6 channel amp / subwoofer filter

Hello.
Thankyou for yor kind offer.
I am meant to be setting this up for a friend.
When he told me I thought he just wanted a speaker wired up.
However when I came to look at the job I mfound this box was involved.
I believe all he basically wants to do, is to use this amp to drive a subwoof box. from his kenwood head unit (I have the details for this)
My querries are as follows:-
The ratings of the cables and power supply required.
Whether two or more of the channels can be "bridged", as we are only driving a single speaker, and how.
What is the use of the "hi" inputs with 3 pin miniture plugs,
as opposed to the expected "phono" inputs.
I shall take a look at the unit gain and come back with more specific info.

Best regards

pete

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  • james  boyone
    james boyone May 11, 2010

    Hello , need more info u can call me at 559-3015942

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Hi dougal,
The power cable size depends on how many watts the amp is rated at (realistic) RMS with all channels driven at 20 to 20K.
Buy the largest cable you can afford as you never know when you may add another amp,
Though with 6 channels it should handle almost any reasonable sound system configuration, such as, front, rear fill and the sub/s.
400 watts and less will do fine on 8 gauge wire. 500 watts or more should be using 4 gauge, with a distribution block. The ground should be the same size as the power wire, and solidly connected to BARE metal,
keep it as short as practical.
Use good quality terminal connectors throughout.

The (HI) inputs simply means, using the speaker output from the head unit, as opposed to the RCA connectors.When purchasing the RCA cables don't be fooled by all the fancy high dollar one's, unless cosmetics are important to you.
$5.00 cables will sound just as good as the $25.00 ones. ( The marketing dept. hates that truth. )

You can bridge any two channels as long as they are the matching right and left pair.
Look at the amp, usually the rears are the most powerful and have a low frequency crossover.
The woofer impedance and whether it is single or dual voice coil will determine the speaker wiring.

If the woofer is a single voice coil, 4 ohms...
The positive terminal on the speaker goes to left positive, on the amps left channel terminal. The negative speaker terminal goes to the right channel negative on the amp.

If the woofer has two 4 Ohm voice coils,
Parallel the terminals on the speaker.
Pos. to Pos. and Neg. to Neg. and then wire as explained above it will present a 2 Ohm load to the amplifier, any good amp can handle that. If in doubt check the specs.
I hope i was of some help.
Regards, S.

Posted on Jul 02, 2008

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