Outdo B&C 21DS115 and upgrade to modular subs

Crashpc wrote: Elliot:  Yes, one 21DS115 cannot keep up with horde of other drivers. That is established math. But that approach is a joke, as it loses on all aspects. Volume - much larger. Price - much larger. Efficiency - much lower. Again, I struggle to see how anything of it is any better. I can only get "up to" two pieces of Eminence Lab12 for one 21DS115 for the price. It has more motor force than two, hell three or four of these, more cone area, more displacement volume than two/three of these. Labs are a joke compared to this driver.

Two Double Twelve Bins (Eminence LAB 12) offer a displacement of 2610 cc Vd
One B&C offers a displacement of 2483 cc Vd
 

This is what you wrote:

Crashpc wrote: Hey. Seems you guys missed I mentioned it can be more bins. Not just one. I meant less than 180l for each box, not 180l for the whole system. I was thinking IPAL too, but it is still big and heavy. I need something I can move around, troll with multisub solution for my room, be safe if one driver dies on me suddenly, and so on. That´s also why I´m also looking at multisub solution. When I do some smaller gigs, one sub is too risky to work with. Now there are plenty of subs able to go flat down to 25Hz, but if I would grab first thing on sight, like few pieces of 15" Ultimax drivers, it wouldn´t be efficient, cheap enough, small enough system. I would like to keep multiple aspects good. Like Price and efficiency, but not volume. Volume and price, but not efficiency. I´m afraid Ultimax is neither cheap, efficient or small... I´m aware I will have to pay more than what I payed for DS115. it´s a miraculous driver for what it is....

I offered multi-sub solution that fell within 180 Litres per unit, achieved 25 Hz and, offered more output in multiples than a single B&C 21 DS115 and, does not weigh a lot. That is what you requested based on your quote above.

If you want to talk about price, only someone who lives in Czech Republic will be able to determine the exchange rate of importing drivers. I live in the States. However, I do recall stating

Elliot Thompson wrote: I understand the issue of price. I would suggest finding twelve inch drivers very close to the Eminence LAB 12 TS Parameters within your vicinity.At least you have an idea what parameters will give you 25 Hertz in a 180 litre box.

Best Regards,

Forget Lab12. BMS 12S330 is much more affordable, more powerful and more sensitive.

MarjanM: Thanks. I will look into that. It has smaller Xmax, but it is cheaper, and has more powerful motor. I´ll do some sims etc...

I´ve played with tapped horns. Firstly with very, very "unusable" driver, then 8$ 6.5" driver, and it turned out quite well, and I might experiment some more. Handling of those horns is not best, due to its dimension, but it is still way better than 21DS115.

mobiele eenheid: The description is rather up to you. I´m trying to follow and understand why you say this. From your current response, I cannot agree in general. Keep in mind, that this driver, giving for example 1.5db less output power doesn´t give it at the same input power as the high Q driver. It is more likely than not, that the driver is just underpowered (for example due to the higher impedance in that particular frequency) so if you EQ it up 1.5db, it will get to the same power as the high Q driver.