Thanks for the replies...
[quote name='Bill Fitzmaurice' post='700452' date='Jan 4 2010, 01:52 PM']If you investigate further you'll find the differences between tens, twelves and fifteens in general are slight, while those between specific models of drivers are considerable. You'd also find that the 2x10 is, all things considered, the most versatile configuration when the drivers are vertically aligned (and most are not) while the 4x10 is the most intrinsically flawed.
Where tens are concerned my preference lies with the Eminence Basslite S2010 and Deltalite II 2510.[/quote]
Well, I'm not sure that is entirely what I was seeing from the specs... For the delta lites, the 10's are clearly less useful in terms of low-end frequencies (for bass), the 12's will be loudest (and true, the 15's don't look any better than the 12's, but are a bit less sensitive):
2510: Resonance 53Hz, Usable Frequency Range 60Hz-4kHz, Sensitivity 97.3
2512: Resonance 42Hz, Usable Frequency Range 54Hz-3.7kHz, Sensitivity 99.9
2515: Resonance 42Hz, Usable Frequency Range 54Hz-3.7kHz, Sensitivity 99.2
Basslite S2010: Resonance 46Hz, Usable Frequency Range 54Hz-4kHz, Sensitivity 96.2
There doesn't *appear* to be anything stand-out there (or against 10's in other ranges/brands either)... But I do appreciate your responses to my question.
I wondered if there was any other brand around that I hadn't spotted that might be more appropriate - but maybe there isn't...
I appreciate what you say about vertical alignment though - the old principle of the "column speakers" - it is odd how things come into and go out of fashion. Re the topic of my post, it looks as if a 2x12 would probably give most "bang per buck" (a better compromise) comparing power, frequency response, size, weight, sensitivity and cost, than 2x10, 4x10, or 1x15 = but they don't seem very popular at all...
[quote]Don't think going 4 ohm would make enough difference to be worth the change. The Sica drivers are kind of lame though, so upgrading for moe power handling and sensitivity is more viable. Is it a sealed or ported cab? Makes a fairly huge difference in driver choice.[/quote]
I wouldn't swap out just for that - I was looking for better sensitivity, better frequency response and maybe higher power rating - the impedance change was the icing on the cake... (and it's ported....)
Does anyone know what speaker is used in Ashdown's ABM series - they seem to boast 102dB sensitivity, versus the 98dB of the MAG series - that's double the volume right there...
Thanks again
Alan