Would this ohm matching be dangerous?

[lazerviking]

3 cabs. A 2x15 (4 ohm) a 4x10 (8 ohm) and a 1x18 (8 ohm).
Head is 700 watts @ 2 ohms. Would this explode?

[Rick Auricchio]

Using the three cabs at once will produce a net 2-ohm load, which the amp can handle.

The 215 cab will receive almost half the total power; the 410 and 118 will split the remainder (25% each).

You'll have to listen carefully to hear if any of the cabs is in distress (farting out). That's going to be your upper limit.

Since you don't mention power ratings of the cabs, we don't know whether there will be a thermal limit on any cab.

[elgecko]

It's dangerous to your back unless you have a roadie!

[MuzikMan]

It looks like your good to go based on the information you give. Your 3 cabs will present a 2 ohm load to your amp.

[Calaverasgrande]

as long as you hook up the cabinets correctly it should be fine.
That would mean running one speaker cable from the amp to the 410 and then from the second jack on teh 410 (they almost always have 2 jacks on a 410) to the 18.
Then run a second speaker cable from the amp to the 2x15.
More to the point, it will likely not sound very good for how much work you are doing to move this around. Also, a 4x10 and a 2x15 are roughly equivalent in efficiency (loudness). Almost all 18" cabs are not very efficient at all, so you may be just pouring watts into the 18 that essentially go nowhere.
If you have a solidstate head you may be able to get away with running just the 2x15 and 4x10. And it may sound better.

[billfitzmaurice]

Bag the 18, it won't add anything to the mix. Just the 215 and 410 should be enough for any gig.

[MuzikMan]

Originally Posted by Calaverasgrande

as long as you hook up the cabinets correctly it should be fine.
That would mean running one speaker cable from the amp to the 410 and then from the second jack on teh 410 (they almost always have 2 jacks on a 410) to the 18.
Then run a second speaker cable from the amp to the 2x15.
More to the point, it will likely not sound very good for how much work you are doing to move this around. Also, a 4x10 and a 2x15 are roughly equivalent in efficiency (loudness). Almost all 18" cabs are not very efficient at all, so you may be just pouring watts into the 18 that essentially go nowhere.
If you have a solidstate head you may be able to get away with running just the 2x15 and 4x10. And it may sound better.

Your suggestion that the cabs need to be hooked up in a certain order makes no sense to me. Why should they be hooked up in that particular configuration?

[BurningSkies]

Originally Posted by billfitzmaurice

Bag the 18, it won't add anything to the mix. Just the 215 and 410 should be enough for any gig.

Bill, this kind of reasonable and thoughtful advice is counterproductive to the OP having a monster rig. Please take your "facts" and intelligent feedback to a thread that is less fun than this one.

[lazerviking]

Cool, yeah just thinking out loud really. I want full power from the amp and good sound. What about 2x 8x10's? Ampeg's are 4 ohm and have a handling like 800-1200 if I can remember.

[MuzikMan]

Wait a minute..............you don't actually have the cabs in question? Well, in that case stick to matching cabs, they will always produce better results...............ALWAYS !!!

[BurningSkies]

Originally Posted by lazerviking

Cool, yeah just thinking out loud really. I want full power from the amp and good sound. What about 2x 8x10's? Ampeg's are 4 ohm and have a handling like 800-1200 if I can remember.

What are you trying to accomplish ? I mean, besides a back ache? Are you in a band with 2 guitarists with 8x12 rigs & high wattage heads?

[MuzikMan]

Originally Posted by BurningSkies

What are you trying to accomplish ? I mean, besides a back ache? Are you in a band with 2 guitarists with 8x12 rigs & high wattage heads?

I remember what it was like to dream big..................do you?

[billfitzmaurice]

Originally Posted by lazerviking

Cool, yeah just thinking out loud really. I want full power from the amp .

Bill, this kind of reasonable and thoughtful advice is counterproductive to the OP having a monster rig. Please take your "facts" and intelligent feedback to a thread that is less fun than this one.

Are we having fun yet?

[BurningSkies]

Originally Posted by MuzikMan

I remember what it was like to dream big..................do you?

I don't need to dream big. You're talking to someone with a 3kw amp. But big just for the heck of it because it "looks cool" isn't necessarily a good thing.

Call me the dream crusher.

Originally Posted by billfitzmaurice

Are we having fun yet?

Of course. I always am having fun. Aren't you?

[Aussie Player]

Originally Posted by lazerviking

3 cabs. A 2x15 (4 ohm) a 4x10 (8 ohm) and a 1x18 (8 ohm).
Head is 700 watts @ 2 ohms. Would this explode?

If you actually have the HA7000 head, it is 2 separate channels @ 350 watts each I beleive.

This means you simply plug the 215 into 1 side and and use the 2 separate speaker jacks on the other output side and you will be balanced a 4 Ohms per side.

This the preferred amp head Jack Bruce uses or at least used to use and it can take 4 Ohms per side for each output of 350 W.

[cheezewiz]

Originally Posted by lazerviking

Cool, yeah just thinking out loud really. I want full power from the amp and good sound. What about 2x 8x10's? Ampeg's are 4 ohm and have a handling like 800-1200 if I can remember.

So when is the stadium gig?

[lazerviking]

Head in question is a Peavey Max 700. Music is me + a drummer. Down tuning, slow tempo, overdriven. Loud volumes goes along with this kind of music, but I want to be able to have clarity over loud drumming. Would I be better off with 2x 4 ohm cabs?