Contour Enthusiasts Group Archives Forums Modifications Audio Can and how do you run 2 subs off 1 channel

So I have Mtx Blue Thunder Pro 752 amp. Rated at 37W per channel. Hooked to one 10" sub in bridged mono mode supposedly producing 150W. Can I hook another 10" to this amp in mono mode, what power am I looking at running to each sub and what will be my ohm rating?

I got this amp super cheap off Ebay, amp + 10" Legend in MTX box for $90 shipped. Good deal? I feel I stole it but not sure?

Christopher

If the amp can handle the low impedance: run the positive wire from the sub you have to the positive terminal of the new sub, and then do the same for the new sub's negative wire to old sub negative wire. When you run two subs like this you are running them in parallel. This cuts the impedance in half (two 4ohm subs in parallel equals the impedance of 1 2ohm sub) which will make the amp create about twice the normal power.

Judge told how to hook it up correctly but I would not run your MTX at 2 ohm mono.

To run 2 ohm mono the amp needs to be 1 ohm stable.

I would run a 4 ohm mono load which would require two 8 ohm subs wired in parallel.

You get 150W @ 150/2 watts per sub.

The amp doesn't need to be 1-ohn stable to run a 2-ohn mono load. bridging an amp does not cut the Ohm's in half, so there is no need to make sure the amp is 1-ohn stable. If you want to make hooking the amp up easy, just run a plus from each sub to the + on the amp, and a - from each sub to the minus on the amp.

Thanks for the help guys.

Will the Amp push 2 10's without a problem?
or am I facing disaster!

What Brand/Model 10's?
What Ohm?
What is your amp stable at in bridged mono?

Everything I have is used, saving up the cash for go fast mods!
I assume both subs are 4ohms and the MTX Pro Blue Thunder amps say 2ohm stable and gives power output at 2 ohms.

Do NOT hook up two 4ohm subs in parallel to that amp!

That amp is not 2ohm mono (same thing as 1ohm stereo) stable.

You WILL fry your amp. The tendancy for MTX amps to run hot due to their small size will only exaggerate the possibility.

To do it correctly, you need two 8ohm subs bridged in parallel. Your amp will see a 4ohm circuit, which is stable for mono/bridged operation.

BTW, I've got a MTX Blue Thunder Pro 502, one step below your amp. You did get a steal of a deal. It's a great amp. Did you get the birth certificate along with the amp? If you're curious, here are the ratings they spec'd off my amp at the factory (if memory serves correct):

52x2 @4ohms @12.5V
75x2 @4ohms @14.4V

100x2 @2ohms @12.5V
152x2 @2ohms @14.4V

THD = .005%

As you can see, MTX grossly underrates these amps. My brother-in-law has a Pro 1502 that greatly exceeded its ratings, spec'd at well over 400w.

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'99 SVT
Silver Frost/Midnight Blue

About as stock as they come these days.

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