Sub woofer powering

[east electronics]

I am about to install 2 2X18" Renkous Heinz Qube sub woofers in a club B&C equipped...

I am some 25-30 meters away from the dance floor and the amplifiers, i have available 4 lines of 2X2.5 mm cables . I could locate the amplifiers one meter away from the subs but the Owner of the club will not do that ...

I have many good same amplifiers available though .... So the question is if it will work better to brake the connection behind the sub and operate 4 woofers distributed 1Woofer for one ch of amplifier . Each amplifier will operate at 8 Ohm load .

I expect less distortion when i am close to the peak less stress in the amplifiers and more total power

Is my estimation correct ?

 

[JonSnell Electronic]

How much power will be available after a 30mtr run of 2.5mm cable? Not a lot. The average 10mtr 2.5mm spur has 5volts drop at 1kW!
I have run Nexo Subs with 6mm cable over a maximum run of 10mtr. and the power drop in noticeable.
Insist the amplifier is next to the speaker. It is the only way. You will have poor bass otherwise.

 

[east electronics]

John in many of your answers you have made a sport on loosing the target .... As you can tell from my writing i am completely aware of that ....working on it though trying to convince the owner about it

That wasn't my question though

 

[mickeymoose]

Well, the 4th. line in your post #1 isn't clear. I think you ask: is it better to use 4 amps with one speaker each or all speakers on one circuit using a bigger amp.
I would go with 4 amps, one speaker each. If 1 of 4 fails you still have 75% of bass left. E

 

[east electronics]

I have the ability to drive the subs with one amplifier at 4 ohms each But i also do have the ability to drive the subs with two amps which means on amplifier channel for each woofer ...

Amplifier available is electrovoice P3000 and have like 4 available here is the specs

Continuous Rated Power (1 kHz, THD 1%) 2Ω 1800 Watts
Continuous Rated Power (1 kHz, THD 1%) 4Ω 1300 Watts
Continuous Rated Power (1 kHz, THD 1%) 8Ω 850 Watts
Continuous Rated Power (20-20 kHz, THD<0,2%) 4Ω 1200 Watts
Continuous Rated Power (20-20 kHz, THD<0,2%) 8Ω 750 Watts
DIM 30 0.01 %
Electronics Type Amplifier
Input Impedance (Balanced) 20 kΩ
Input Sensitivity 0 dBu / +6 dBu / +26 dB
Intermodulation Distortion (SMPTE) 0.01 %