Can I run an 18" cab and two 15" cabs off of crown xls1000?

[two fingers]

I'm not just trying to get under your skin or anything. I guess I'm just really curious as to your choice of speakers/amp in combination. What brought this about? In other words, why do you think that the power amp with 3 miss-matched big speakers is the way to go? Do you need more volume and you think this is the way to get it? Do you think it would just look cool to have a rig that big in a VH band (if so just leave the 18' unplugged)?

[Jaguar]

As you can tell I haven't run this combo before and tfm is vague on instrument hookup.sorry I asked too many questions.Thanks for the help.

[Jaguar]

Nothing is for looks,if that was the case a pedal powering a crown would not be my first choice for looking cool

[Downunderwonder]

Originally Posted by Jaguar

With just the 15's do I run bridge mono?

You could but all you would get out of it would be blown speakers. Afaik they aren't heavy duty. If you find the amp clips without the speakers farting out go to one cab on each channel. If it still clips then you can use bridge mode but LOOKOUT, they will be exposed to a lot more power being pushed.

[makohund]

Originally Posted by Jaguar

With just the 15's do I run bridge mono?

No, they're saying not to. Run both on a single channel and leave the other unused. (Or if you must add the 18, put it on the other channel.)

Or you could run one 15 on each channel.

You could bridge the amp (which results in a single higher powered channel) and put both 15s on that... But probably not the best idea. Too much power for the cabs to handle, would have to be very careful. Easy to slip up and push 'em too hard, and blow 'em up.

At least that's what they're saying, haven't looked at the numbers myself.

[Jaguar]

Like I said before I wanted to know the best mode for just the two 15's.there are five different modes in the menu.stereo bypass,bridge-mono,Crossover,high pass and low pass.I have the 18 and was thinking of using it for a large outdoor gig in the summer 3000+ people

[Jaguar]

Thank you makohund

[Jaguar]

NOW I got it.I'm sorry I asked a lot of questions,but better to be sure and understand than to blow **** up.
Thanks again

[makohund]

Nothing wrong with asking questions.

They're just wondering what you're hoping to gain by adding the 18. Because sometimes the gain can be other/less than hoped for, and can come with losses as well.

Adding the 18 is unlikely to make a big volume difference. (Unless it is an actual subwoofer, in which case it could add significantly down way low. But that can also come with yet another set of drawbacks.)

What is more likely, is it could clash with the 15's... ultimately muddying up your sound. It *might* not, or you might like how the result sounds, but chances are it'll sound better with the 15's alone.

Between those two points, adding the 18 could very well end up a net negative, rather than positive result. That is why they're asking why you want to do it.

Since you already have it, and everything you need to try it... go ahead. I personally agree that you'd be better off with just the 15's, but no harm in giving it a go. If so, make sure to check it out in a band mix at gig volume if possible, and listen to it from all over, not just standing in front of it.

Good luck. And as stated by others, you could just leave it unplugged and stack the others on top cuz it looks awesome that way on a big stage.

[makohund]

Originally Posted by Jaguar

Like I said before I wanted to know the best mode for just the two 15's.there are five different modes in the menu.stereo bypass,bridge-mono,Crossover,high pass and low pass.I have the 18 and was thinking of using it for a large outdoor gig in the summer 3000+ people

Probably use stereo bypass mode. Either one 15 on each channel, or both on one.

If the high pass can be set whereever you want, say 50Hz or lower, you could try that. (If could be set at 35 or 40Hz, I'd definitely try it.) But if it is fixed at a standard (for tops/subs) 100Hz or so, don't.

If your 18 is a sub (I mean an actual high-powered PA sub, not a full range bass cab), you could try low passing it. But watch out... too much sub frequencies from your rig can put you in conflict with the PA subs, if there are any. This can be worked out, but you'd need to know what you're doing, and the solution is probably going to mean dialing down those lows. (Defeating the purpose of doing it to begin with.)

Anyway, there you go. Have fun with it, hoped that helped a little.

[Downunderwonder]

Voice Coil: 2.5”
Magnet Weight (each): 80 oz
RMS Power Handling: 200-Watts
Frequency Response (-3dB): 50Hz-3kHz
Usable Low Frequency (-10dB): 33Hz
Nominal Impedance: 8-Ohms
Sensitivity: 98dB
Maximum SPL: 123dB
Dimensions (W x H x D inches): 24 x 22 x 16
Weight: 72 Pounds

Ampeg is supposed to be honest real bass power rated, so 200W of vanilla rock.

Looking at XLS1000, one channel 350W or one on each channel 215W each, they probably clip a good bit higher than the RMS rating which would be thermalling your cabs so don't go there. No bridging 1100W unless you have a deathwish.

[Bassmec]

Originally Posted by two fingers

You can. But you shouldn't. You just....... shouldn't. Why exactly does a VanHalen tribute band justify such a setup? I never thought MH's tone was a total mud fest.

Speaking of mud fest's here is another no account mudslinger that has insanely decided to stand between an Acoustic 408 loaded with JBL ki40's and a 301 cab loaded with a single reverse firing Cerwin Vega 18.
The OP never realised when he came here that he would come across the rabid dogmatic don't mix driver sizes posse.
http://m.youtube.com/#/watch?v=JnpyC...yCEUESEw&gl=GB
This lot here would tell Jaco if he was still alive, that he was a twat, in fact he probably got stabbed to death in that bar arguing about why he mixed 18" and 15" speakers.