Suitable for IB?

[iansr]

I have a pair of subwoofers that were used in a Bastani Atlas speaker set up. They are 15" and the specs I have for them are as follows:
Qts: 0,27
Vas: 165L
Fs:35Hz
Xmax: +/- 8mm
Nominal impedance 8 Ohms
Minimal impedance 6,2 Ohms

I'm wondering whether these would be suitable for an IB installation. Comments welcome.
(It is relevant to mention that these will be part of a 2 channel hi fi system, not HT. I will be having 3 sub sources in total as per Earl Geddes advice, so this pair of drivers are potentially one of those sub sources.)

[ThomasW]

Any box modeling program will tell you how loud the drivers will play at a given frequency.

Limited to 8mm of Xmax, IMO they'd be best put to use as the woofer in a ported box. In an IB you'll bottom the drivers with the first big bass transient..

Statements regarding use of drivers for music and not HT or using the Gedde approach aren't all that helpful when no information is provided about the size of the listening room, distance from the mains to the listening position, desired output levels, etc....

[chrisbee]

Some modern electronic music "composers" use very low frequencies without a thought to the dangers of driver over-excursion. The crime is further compounded by the total inaudibility of these ULF pulses on any subwoofer on the planet. Except perhaps the fan subwoofers.

It makes great hype to claim the use of ULF on a track even if it is pointless and potentially dangerous to some subwoofers. Quite often all it means is that the maximum permissible playing level is heavily curtailed for the end user. Without the ULF pulses the music could be played at much more realistic levels.

Similar problems exist for those who listen to vinyl. Normal cone excursion is easily exceeded if an IB is asked to play record warp or inadvertent footfalls. A high pass filter becomes mandatory to protect the driver cones. So music is not always innocent, light exercise compared to film LFE. You still need four, long throw drivers to handle the unexpected.

[iansr]

thanks for the replies.
Re ULF signals, the sgnals to my subs will be going through a DCX 2496 and I will certainly be setting a HP filter.

[twisterz]

Well said Chrisbee, Build it to withstand the unexpected so you can enjoy it when it comes around.