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Sound Reinforcement - Forums for Live Sound Professionals - Your Displayed Name Must Be Your Real Full Name To Post In The Live Sound Forums => LAB Subwoofer Forum => Topic started by: Tony Pubelo on June 04, 2014, 08:34:25 am

Title: Powering Subs
Post by: Tony Pubelo on June 04, 2014, 08:34:25 am
I have (6) EV MTL2B subs. Each cabinet is  loaded with (2) EVX180B drivers, making each cab a 4 ohm load. I am told powering these cabs is 1200 watts.

Looking a for advise on amplifiers to power these subs.

Crest CA18 or Crown MA5000 - I am told these amps will run all day long at 2 ohms which would run (4) cabinets. The MA5000 runs in a mono-parallel mode down to 1 ohm - could I tie all the subs together @ 1.3 ohms and run them too?

I was also looking at the Crown 12000i  I could run 3 subs a side @ 2.7 ohms or bridge the amp and run all 6 subs @ 5.4 ohms.

Or is the best option 3 amps, each amp running stereo @ 4 ohms. If so, what amps do people recommend for any of the applications of running these subs.

There will be times I only run 2 or 4 subs.
Title: Re: Powering Subs
Post by: Art Welter on June 04, 2014, 08:53:51 pm
There will be times I only run 2 or 4 subs.

Tony,

No experience with those Crowns, the CA -18 is a brute, but won't do all 6 cabs. My choice for old school power would be three CA-9 rather than putting all your eggs in one old basket.
If you want to save a lot of weight and still hit them hard, three SpeakerPower SP4001 would do well too, and could be mounted in three of the cabinets.

Art
Title: Re: Powering Subs
Post by: Richard Turner on June 04, 2014, 09:43:10 pm
also the ca18 really requires a 30 amp outlet to use to its full potential and meet code whrn operating.

Will you always be using in rooms with access to this?
Title: Re: Powering Subs
Post by: Tony Pubelo on June 05, 2014, 12:04:20 pm
No, 30 amp is not at all venues. I was looking at the QSC RMX 5050 & the QSC PDL 4.5 anyone use these for subs.
Title: Re: Powering Subs
Post by: Tony Pubelo on June 06, 2014, 07:30:52 pm

I just purchased off eBay (3) EV CP4000 amps. One channel per sub 1800 watts @ 4 ohms. I also purchased online the QSC PDL 4.5 which is a four channel amp. It will put out 1250 watts at 4 ohms per channel. I'll test it out on the subs but I will be using that for my high/mid packs.

I have (6) EV MTL2B subs. Each cabinet is  loaded with (2) EVX180B drivers, making each cab a 4 ohm load. I am told powering these cabs is 1200 watts.

Looking a for advise on amplifiers to power these subs.

Crest CA18 or Crown MA5000 - I am told these amps will run all day long at 2 ohms which would run (4) cabinets. The MA5000 runs in a mono-parallel mode down to 1 ohm - could I tie all the subs together @ 1.3 ohms and run them too?

I was also looking at the Crown 12000i  I could run 3 subs a side @ 2.7 ohms or bridge the amp and run all 6 subs @ 5.4 ohms.

Or is the best option 3 amps, each amp running stereo @ 4 ohms. If so, what amps do people recommend for any of the applications of running these subs.

There will be times I only run 2 or 4 subs.