Bridging amps into duel voice coil speakers

[SMIRK]

I will be running two MTX D8100 amps into two Kicker Solo Baric L7's (2 ohm duel voice coil). What would be the best way to wire the amps to the subs?

The amps are rated at 1000w RMS X1 into a 2 ohm load or 500w RMS X1 into a 4 ohm load. The speakers are rated at 750w RMS or 1500w peak.

If I bridge the amp should I run the voice coils in series or parallel? If I understand it right, with a bridged amp and the speakers wired parallel, this would put me at around 1 ohm and my equipment can't handle that. So, if I wired them in series, this would put me at 500w into a 4 ohm load-would that be best?

Would there be any benefit or draw back to running one channel of the amp to one voice coil and the other channel to the other voice coil?

//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

Click to read more...

 

[Horsemanwill 10+ year member]

first aren't those amps mono blocks? second if your running 2 12s and you want each sub to get its own amp the only option you have is to wire it 4 ohms.

 

[SMIRK]

Yes, the amps are monoblock. The subs are duel voice coil so, I believe I have the option of running the voice coils in series or parallel which would change the impedance.

 

[Horsemanwill 10+ year member]

so if they are monblocks you can't run a coil to each channel as they are MONOblocks meaning one channel. your only option is to wire the subs 4 ohms and run each to one amp, since you stated you have 2 amps.

 

[SMIRK]

My apologies if that was confusing. The amps are referred to as monoblock in the respect that they internally turn the stereo input into 2 mono outputs. The amps each have a left and right output that put out the same audible mono signal.

 

[TSGP]

...if it puts out the same mono signal....

then there isn't a left and right output //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

there are 4 connectors there because its easier for hooking up multiple woofers

 

[SMIRK]

Semantics, let me rephrase it! Each amp has two output terminals. If I ran one +- terminal to one voice coil and the other +- to the other voice coil; how would this convert to watts and ohms? Would it convert the same as running one set of wires to the speaker and then wiring the voice coils in series?

 

[Horsemanwill 10+ year member]

you need to look at the manual and find out if it's a stereo amp or a mono amp. on the ratings is there anywhere that says xxx amount of watts x2? if not it is only a mono amp with terminals to hook up 2 subs. regardless of the number of terminlas it's only stable into the ohms it says .

 

[n2audio 5,000+ posts]

Semantics, let me rephrase it! Each amp has two output terminals. If I ran one +- terminal to one voice coil and the other +- to the other voice coil; how would this convert to watts and ohms? Would it convert the same as running one set of wires to the speaker and then wiring the voice coils in series?

You've gotten good advice...

those two outputs on the amp aren't two seperate outputs, there is no left/right, and it's not a matter of semantics.. They're parallel connections to the same (MONO) channel.

If you wire one coil of your dvc 2's to each of the amp's outputs the amp will see 1 ohm, which is below its intended impedance, which will probably lead to thermal problems.

you should wire them for 4 ohms each if you want the amp to survive.

If you want 1000w to each you need dvc 4's.

 

[SMIRK]

Thanks for the input. I did a little more research on monoblock amps and think I have a better understanding. I will be running the amp bridged which will leave it at 500w RMS @4 ohm.

 

[TSGP]

you can't bridge this amp....its only got one channel.

When you bridge an amplifier you are using the positive of one channel and the negative of another channel and each channel sees half of the impedence.

In a mono amp if you have a 1 ohm load and you wire it to ANY of the speaker terminals...you still have 1 ohm //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif