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810 louder than 215 cabinet?

jmpiwonka

Supporting Member
Jun 11, 2002
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Been playing an older mesa boogie cabinet with 2 ev15l's. Just got an svt2 and it not quite loud enough.

Just wondering if an 810 cabinet would work better with that head. I'm cutting back the bass some, turning up the mids a good bit and the treble a little bit.

I know adding another cab would be easiest but keeping it at one cab works best for hauling gear.
 
2 x 10" is equal to a 15". Well, not exactly but it's a good guideline.

For example, a 410 is a good match for a 215. A 115 is a good match for a 210.

Etc etc.
As far as air movement goes, this is true. As far as sounding good, it's very unpredictable how good it will sound due to phasing issues, and quite honestly, I've yet to hear a mixed cab rig I've enjoyed.
 
i thought he just meant one would hang with the other volume-wise; as far a running them together, yeah, that's often kinda less than the sum of the parts.

i'm a little surprised that a boogie 2x15 isn't loud enough for just about any gig, though. did they usually use the EVM "L"s rather than the "B"s?
 
JimmyM said:
As far as air movement goes, this is true. As far as sounding good, it's very unpredictable how good it will sound due to phasing issues, and quite honestly, I've yet to hear a mixed cab rig I've enjoyed.

What about cabs with mixed size speakers (e.g. 15/6)?
 
212 is roughly equal to a 310 or a 1 1/2 15.

Now mind you, accent on the word "roughly." All cabs have to be judged on their own merits, and especially with neo being popular, these rough estimates can be obliterated. The formula for air movement is based on cone size and displacement (xmax), and one with high xmax can outperform one with more normal xmax.
 
212 is roughly equal to a 310 or a 1 1/2 15.

Now mind you, accent on the word "roughly." All cabs have to be judged on their own merits, and especially with neo being popular, these rough estimates can be obliterated. The formula for air movement is based on cone size and displacement (xmax), and one with high xmax can outperform one with more normal xmax.

I'll buy that. Caveats included. Thanks.
 
What about cabs with mixed size speakers (e.g. 15/6)?

Different animal entirely....running the combination of say 1x15 and a 2x10 usually involves hooking them to the same amplifier output, meaning both combinations get the same signal. This is what leads to the problems people talk about.

However, in a 15/6 cab the two different sized drivers are running through a crossover network so the two drivers are getting different parts of the frequency spectrum. The lows go to the 15 and the mids/highs to the 6" driver, so they aren't in conflict with each other but rather compliment each other.