SVT-810E cab & OBC115 cab...out of SVT Pro 4?

kwantize · #1 01-14-2011, 12:50 AM

I've just started in a new project, and the stage rig they are using is an SVT Pro 4 head and an SVT-810E cab. The guitarist that owns the rig asked me if it would be possible to run one of my Orange OBC115 cabs along with this. I've owned a Pro 2 for about 10 years, but have pretty limited knowledge with the Pro 4. Would the best way to do this be running the 115(8ohms) from power amp A, and running the 810E (split in stereo 8ohms) with two of the outs from power amp B?.....Any knowledge is much appreciated

JimmyM · #2 01-14-2011, 12:52 AM

i can't think of anything more useless than running a 115 with an 810e. you won't even be able to hear the 115 by comparison.

kwantize · #3 01-14-2011, 01:31 AM

Could I not even the cabs out with the crossover if I ran the biamp lo out to power amp A (which would be the power amp powering the 115) ?

Sartori · #4 01-14-2011, 05:36 AM

Why? I don't think the obc115 really goes much, if any, lower than the 810. And like Jimmy said, it will be inaudible. It has only a quarter of the speaker area of an 810. That's just silly.

georgestrings · #5 01-14-2011, 06:15 AM

Quote:

Originally Posted by JimmyM

i can't think of anything more useless than running a 115 with an 810e. you won't even be able to hear the 115 by comparison.

+1... I don't know why someone would want to do it, tbh...

- georgestrings

kwantize · #6 01-14-2011, 03:12 PM

Thanks for the input guys. Like I said, my knowledge is limited. I was hoping for a little more technical info on the split power section of this amp, and a little less of getting hated on for my question, but the feedback is appreciated

christw · #7 01-14-2011, 03:21 PM

Quote:

Originally Posted by kwantize

Thanks for the input guys. Like I said, my knowledge is limited. I was hoping for a little more technical info on the split power section of this amp, and a little less of getting hated on for my question, but the feedback is appreciated

It isn't an attack on you. These guys know their stuff and get asked the same thing every day so occasionally the answers come across the wrong way.

Anyways, there's a lot more speaker area and a lot more power handling on the 810's side. It'd be much better suited to the lows.

Ps- I'm guessing it has a crossover or is crossed over for biampimg?

Sartori · #8 01-14-2011, 03:23 PM

You're not getting hated on. You're being told it's a bad idea, because it is. It has nothing to do with the power section of the amp, and everything to do with the speaker cabs.

One fifteen inch speaker has similar speaker area to two ten inch speakers. This means they will be, more or less, similarly loud. Hence why of the mixed speaker rigs, a pairing of a 15" cab and a 2x10" cab is one of the more sensible.

An 810 has, obviously, eight ten inch speakers. That's roughly four times the speaker area of a single fifteen inch speaker.

Being loud is not all about watts. An increase in speaker area means an increase in volume. Which is why the 810 will be so much louder than the 15 that the latter will pretty much be inaudible, and so, pointless.

OldHack · #9 01-14-2011, 03:26 PM

IME, the best way to use that rig is with the 4 Pro running in bridged mono into the 810E. You need the correct cable for that. I'd recommend searching the threads here for more info and tips on how to run the 4 Pro and also recommend downloading the manual from Ampeg's site to see how the separate amps work. It's a great sounding rig!

sapienerabass · #10 01-14-2011, 03:37 PM

If the Orange is going to be a stage monitor/side fill, for say the drummer or another "loud" band-mate on stage then I kinda get it.

I own an SVT2 Pro + 810e and no-one ever complains about not hearing me! I imagine the SVT4 would be equally stage dominant. But in the interests of band politics/diplomacy in a new project just try their idea...sometimes it's not worth the argument!

JimmyM · #11 01-14-2011, 11:20 PM

Quote:

Originally Posted by sapienerabass

If the Orange is going to be a stage monitor/side fill, for say the drummer or another "loud" band-mate on stage then I kinda get it.

here's why i don't get it if it's for a stage monitor for the drummer. two point sources blasting low end located close to each other can cause the waves to bounce off each other and create cancellation zones. is it possible to hook both up to your 4 pro? certainly. but your 810e can take 3-4x the wattage of the orange, so the orange will be a limiting factor. plus it won't have a separate eq and it could sound wildly different to your drummer.

now if you want to do it right, i would recommend running a line out of the 4 pro into a separate amp so he can roll off the low end and let your rig give him those lows, and then you won't be creating dead zones onstage or in the crowd. even better is if you run through the pa and he has a monitor that he can have you playing through. but if you don't have that kind of pa, then this will work but i really believe you should use two amps.