Bill Fitzmaurice

[quote name='MoJ' post='12657' date='Jun 5 2007, 02:58 PM']If its any help Bill, I play 4 string tuned down to low B so I was swinging toward the omni 15 for its lf (correct abbreviation?) and I know that that has internal 3 way crossover in it for the differing speakers. Would a Titan and Omni 10 bi-amped be feasible?[/quote] The O15 can easily be bi-amped, and doing so eliminates a lot of costly and from what I understand hard to find in the UK crossover components. T39 and O10 can go either way as well, and again, bi-amping would save a lot on the crossover parts. I'd only go with an O10.5 with a T39, two tens aren't necessary.

[quote name='MoJ' post='12132' date='Jun 4 2007, 05:44 PM']Does it make a difference Id be using say a 2 x10 and 1 x 15 of commercial cabs? Thanks Andy[/quote] All the difference in the world. Bi-amping (or tri or quad for that matter) is de reguer in the upper end PA genre, where speakers are designed to work with high efficiency, in terms of both SPL and pack space, over a relatively small bandwidth, with no overlapping coverage. That's pretty much the opposite of how most bass cabs are designed, so the advantage of bi-amping with typcal electric bass cabs is greatly reduced.

[quote name='pete.young' post='12164' date='Jun 4 2007, 06:10 PM']So in order to get the optimum bass response, you need a cabinet volume equivalent to the VAS ? It can't be that simple, surely.[/quote] It's not, and stop calling me Shirley. For instance, a Beta 10 with a Vas of 82l works best in a 156l Vb. But 'best' is to a 38Hz f3, which is far lower than electric bass requires. A perfectly adequate 55 Hz f3 can be obtained with only 60l. The bad news is that most manufacturers will use the Beta 10, or the equivalent thereof, in only 30l, so not only is f3 up above 60 Hz but there's also a response hump around 140Hz that results in a boomy tone.

The Basslite Vas is very large and makes the driver one of the least desireable of the Eminence neo line. The Deltalite II 2515 and Kappalite 3015 are far superior.

[quote name='OldGit' post='10987' date='Jun 2 2007, 07:11 AM']So I'm going to email Marco and ask him directly - hey why not.[/quote] It is a fault, one that wouldn't get past FCC regulations this side of the pond, I'm sure you've got a bevy of similar bureaucrats on your side who'd be similarly upset.

[quote name='dave_bass5' post='11013' date='Jun 2 2007, 08:43 AM']Thanks guys yeah, the matt idea is a good one. ill try and track some down.[/quote] Try sellers of power tools. There are mats made to hold wood stationary atop a bench whilst being sanded or routed.

[quote name='dood' post='10478' date='Jun 1 2007, 07:45 AM']I've not heard any stories of the Behri' cabs 'blowing up' or anything.[/quote] I have, many times. Behringer electronics tend to be quite good, but they cut corners on everything mechanical, which includes switches, jacks, pots, and drivers.

[quote name='BOD2' post='7039' date='May 26 2007, 05:56 AM']Can you connect both to the same wall socket to see if this eliminates the problem first ?[/quote] Even then the ground loop may persist, as there will still be two ground paths connecting the devices. Transformer isolation is the best bet for a cure.