Box size for xl12s and 7k?

[juicemane]

I'm putting 7k to 2 xl12s m1 subs. Speakers have 5 medium + 1 stiff spider what size enclosure should the subs be in 3 cubes after total displacement or less.

[OrionStang]

What 7k amp are you using?

Thats a tad much for M1 xl's.

[CJ18]

I would say about 1.25 net per sub

[juicemane]

Bc5500 at 16volts

[Robert8252]

I'd aim for 4-4.5 net with 15 per. Go easy on the gains if you can't clamp it.

[CJ18]

I'd aim for 4-4.5 net with 15 per. Go easy on the gains if you can't clamp it.

WTF!? Did you miss the part about 7k to 2 m1 XL 12s. That is way to big.

[mrd6]

I think this is going to depend alot on where he tunes to and goals for the set-up...need more info OP

[CJ18]

I am considering 2 thing. a) subs power

XL 12s on rated power are recommended for 1.5-1.75ft3 per sub. Now lets double that power, my box recommendation now becomes 1-1.25ft3 per sub to help handle the extra power.

[Robert8252]

I ran a single m1 xl 12 on a 3.5k in 2.3 cubes with a shit ton of port. Did just fine daily.

[juicemane]

Thanks for the help when I build the box should I go less than 16sqinches of port per cube for cone control?I want the box tuning at 32hz. My xl18 lasted 5 months on the bc5500. Box was 5.30 cubes and port was 92 sq inches tuned at 36 did a 149.5 on music.