I've got plans on building a new system with an emphasis on being portable and scalable. My current system includes two extended LAB Horns (12pi horns by Wayne Parham) - and while the performance is phenomenal, I'm tired of moving them.

Here's my design using a PRV 15SW2000 in a 145 liter enclosure tuned to 40hz. Dimensions are 17.5" x 26.5" x 26.5" - to match up with Weltersys' Syntripp.

My goal is to be small+light enough to carry up stairs alone (I have two second floor venues in our town with no elevator) and also small enough to easily fit a pair in a mid-size SUV for smaller gigs. I plan to start with 4, but eventually build 8 boxes for a full stack for raves/dance events. I will also make port plugs to block half the slot port to drop the tune to 28hz for genres that need the extension.

I recently built a new compact amp rack with DSP and two CVR D-1004 amplifiers. The D-1004 is rated to 89v RMS per channel, which will just push these 8ohm drives to their 1000w RMS rating and 12.5mm xmax. But PRV also makes the 15SW2000 in a 4ohm version. If I were just going to build 4 subs, I would get the 4ohm version so I didn't have to run the amps right up to their volt max to get 100% out of my subs, but if I decide to run all 8 subs, I don't know how well the CVR amps will do at 2ohm (the amps are rated to 2ohm). I will split the subs between both 4 channel amps (each amp runs 1 high, 1 mid, and 2 sub channels) so the load is evenly distributed on two circuits and two power supplies.

So my questions are:

Would you build 4 or 8 ohm cabs?

Does anyone have experience with their CVR D-Series at 2ohms?

Does anyone with CVR D-Series have experience running their amps right up the the built-in limiters?

Anyone have experience with PRV drivers? By their spec sheet, they seem to be an incredible value - almost too good to be true.

Thanks for any critical feedback!

 

I had not considered the current side of the equation like that! The 8ohm version requires 85 volts to reach 1000 watts, which ohms law says requires 11.23A of current. The 4ohm requires just 65 volts to reach 1000 watts, but requires 15.38A of current. Considering I'm mostly limited to 120v mains, keeping current down will probably keep the amps happy. Thanks!

So the PRV audio spec is

12.5 mm Xmax, 36 mm peak-to-peak excursion before damage

So 18mm one way x-damage

So your sims show up to 28mm one way - You have not shared your input screen so not so easy to run the sim to see what Hi-Pass filter you would need to run, but I would suspect that you are going to run out of excursion.

You may find that you can raise the tuning frequency to gain efficiency  - Or you could reduce the power and be limited by excursion. But as is I think the speakers may not have a long life span

I expect that in a slightly smaller cabinet tuned slightly higher, using that driver you will get a good general purpose bass cabinet, usable (not flat) down to around 40Hz. But, if you're looking for low extension, I probably wouldn't recommend it.