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Single Input into Macro Tech 1200


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#1 dgarner

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Posted 13 November 2005 - 01:13 AM

Hopefully a simple question... I have a Macro Tech 1200 and want to drive two subs from a single input... what is the best way to do this... simply a Y cable into channel 1 and 2, bridged mono, or parallel mono?

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#2 DGlass

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Posted 14 November 2005 - 08:27 AM

A "Y" cable would be the easiest way to do this.
The other choice is to take a short jumper cable and jump channel 1 to channel 2 with the other set of input jacks.

#3 Blade

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Posted 15 November 2005 - 01:08 AM

I would run the single input to Ch.1, run the amp in BridgeMono, then piggyback the banana plugs of the speaker wires that run to each sub.

#4 DGlass

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Posted 15 November 2005 - 01:27 PM

QUOTE(Blade @ Nov 15 2005, 01:08 AM)
I would run the single input to Ch.1, run the amp in BridgeMono, then piggyback the banana plugs of the speaker wires that run to each sub.
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The best way is to first decide if you are better power matched for two channel operation, Bridge-Mono mode or Parallel-Mono mode for the impedance and power handling of your speakers. See previous postings.

In two channel operation you would use a "Y" cable on the input to get the same signal to both channels and connect one speaker to each channel.

In Bridge-Mono you connect the mono signal to the channel 1 input and the speakers cables across the two positive output terminals. Piggy-backing the speaker cable banana plugs if necessary.

Parallel-Mono mode is a special output mode our Grounded Bridge amplifiers have that no other amps have. In this mode the two outputs are strapped together Positive to Positive and Ground to Ground so that they are pushing the output together. This allows for Grounded Bridge amplifiers to be able to drive a lower load impedance at a higher output power. Input in this mode likewise goes to the channel 1 input only. The speaker wires would connect like normal, across the positive and negative output terminals, but a jumper wire would be connected between the two positive outputs terminals.

Grounded Bridge amps include the MA, MT, PB, PT and CT amplifiers.

All three of these methods will give you a mono output signal it just depends on which one is the best for your application and speaker requirements.