Cabs - Ohm/Speaker Power Question

[mlove]

Thinking of a buying the following cabs to go with my GK Legacy 800 amp to give me the most options.
212 at 4 ohms
112 at 8 ohms
I think all 12” speaker will receive the same power/be at equal volumes when both cabs are hooked up.
Am I correct?

Thanks

 

[2saddleslab]

Thinking of a buying the following cabs to go with my GK Legacy 800 amp to give me the most options.
212 at 4 ohms
112 at 8 ohms
I think all 12” speaker will receive the same power/be at equal volumes when both cabs are hooked up.
Am I correct?

Thanks

No, with both cabs connected you'll be at 2.67 ohms. Does the GK amp take anything under 4 ohms? Both cabs will receive equal power but the 212 will handle it better than the 112.

The 212 w/ the GK Legacy 800 should be more than enough on its own to carry almost any size stage.

 

[mlove]

No, with both cabs connected you'll be at 2.67 ohms. Does the GK amp take anything under 4 ohms? Both cabs will receive equal power but the 212 will handle it better than the 112.

The 212 w/ the GK Legacy 800 should be more than enough on its own to carry almost any size stage.

The head is 2 ohm stable.

 

[gtirard]

Both cabs will receive equal power but the 212 will handle it better than the 112.

Wrong. The 4 ohm cab gets 2/3 of the power and the 8 ohm cab gets 1/3.

 

[2saddleslab]

Wrong. The 4 ohm cab gets 2/3 of the power and the 8 ohm cab gets 1/3.

 

[Redbrangus]

Presuming the 4Ω cab is two 8Ω drivers connected in parallel, which it almost certainly is, each of the three drivers will dissipate 1/3rd of the power. It's really just 3 drivers connected in parallel, yielding, as previously noted, a 2.67Ω total load.

 

[mlove]

Wrong. The 4 ohm cab gets 2/3 of the power and the 8 ohm cab gets 1/3.

Wrong. The 4 ohm cab gets 2/3 of the power and the 8 ohm cab gets 1/3.

This is kind of what I thought.
Each of the 3 x 12” speakers will be of equal volume is what Im hoping for.

 

[S-Bigbottom]

Go for it!

The 2x12 4 Ohm 1x12 8 Ohm is a very flexible rig that I love having. Together it is the same as three single 8 Ohm cabs, an even power distribution to all drivers at 2.67 Ohms.

2x12 will do most everything, 1x12 for small places and all together... well... because you can.


If you and your drummer have a great relationship (or others in the band) and you want to help them out. With your 3x12 you can turn the 1x12 their direction.

 

[Wasnex]

Presuming the 4Ω cab is two 8Ω drivers connected in parallel

FYI, The way power is shared in the 212 would be exactly the same if it had a pair 2 ohm drivers connected in series.

 

[michael_t]

Thinking of a buying the following cabs to go with my GK Legacy 800 amp to give me the most options.
212 at 4 ohms
112 at 8 ohms
I think all 12” speaker will receive the same power/be at equal volumes when both cabs are hooked up.
Am I correct?

Thanks

This is exactly the setup I have. When you stack the two cabs, each driver gets 1/3 of the power.

 

[michael_t]

212 at 4 ohms
112 at 8 ohms

Just for clarification, are you talking about the GK Neo IV cabinets?

 

[mlove]

Just for clarification, are you talking about the GK Neo IV cabinets?

Yes

 

[michael_t]

Yes

I haven't had a chance (or the need) to stack the two yet, but I'm very happy with the overall set up. My initial plan was to get two 112's and be done with it. I'm glad I went for the 4ohm 212 as it's actually easier to haul around than two 112's. One 212 when I need the full power (800w) and one 112 for lighter duties (400w). And when I want to get wild and crazy, I have the option to stack the two!

 

[mlove]

I haven't had a chance (or the need) to stack the two yet, but I'm very happy with the overall set up. My initial plan was to get two 112's and be done with it. I'm glad I went for the 4ohm 212 as it's actually easier to haul around than two 112's. One 212 when I need the full power (800w) and one 112 for lighter duties (400w). And when I want to get wild and crazy, I have the option to stack the two!

Do you have these cabs and if so what do you think?
Not sure how often I'd use the 3x12's together but having the option is a big plus.
It would give me 212s for band practice/shows and 112 for home practice is the most likely use of them.

 

[michael_t]

Do you have these cabs and if so what do you think?
Not sure how often I'd use the 3x12's together but having the option is a big plus.
It would give me 212s for band practice/shows and 112 for home practice is the most likely use of them.

Yes I do. Legacy 800 + Neo IV 212 (4ohm) + Neo IV 112 (8ohm). I've only owned this rig for a few months so haven't had the chance to explore its full potential yet, but so far it's been working out extremely well.

I play at various church campuses ranging in size from 100 people up to 1500 people. Nice to have different options. By the way, I also own Mesa Subway D350 and Traynor SB500H.

 

[mlove]

Yes I do. Legacy 800 + Neo IV 212 (4ohm) + Neo IV 112 (8ohm). I've only owned this rig for a few months so haven't had the chance to explore its full potential yet, but so far it's been working out extremely well.

I play at various church campuses ranging in size from 100 people up to 1500 people. Nice to have different options. By the way, I also own Mesa Subway D350 and Traynor SB500H.

Currently running my Legacy 800 with an Ampeg 212AV Cab - 4 ohm.
Sounds great but there are a couple things about it that bug me - not speakon inputs, 20 pounds heavier than gk 212, the top of the cab has foot holes for at the V4b or SVT. Bought it when I owned a SVT CL.

 

[michael_t]

Currently running my Legacy 800 with an Ampeg 212AV Cab - 4 ohm.
Sounds great but there are a couple things about it that bug me - not speakon inputs, 20 pounds heavier than gk 212, the top of the cab has foot holes for at the V4b or SVT. Bought it when I owned a SVT CL.

I also own an old Ampeg SVT-610hlf cabinet, which I keep at one of the churches I play at off and on. A very different animal from the GK Neo IV's. I've used the 610 with the Mesa and the Traynor, but not the GK. I feel the GK amp needs GK cabs to show its true character.

 

[ctmullins]

This is kind of what I thought.
Each of the 3 x 12” speakers will be of equal volume is what Im hoping for.

The three drivers will consume equal power (in Watts). Watts is not a measure of volume; that’s deciBels.

If all three drivers are the same make/model, and if they are all mounted in identical enclosures, then you can expect them to produce the same deciBels.

 

[Rip Van Dan]

Thinking of a buying the following cabs to go with my GK Legacy 800 amp to give me the most options.
212 at 4 ohms
112 at 8 ohms
I think all 12” speaker will receive the same power/be at equal volumes when both cabs are hooked up.
Am I correct?

Thanks

Yes, because the 4Ω cab will receive twice as much power as the 8Ω cab. Splitting that 4Ω load into 2 speakers will indeed give each speaker the same amount of power in that rig as the 8Ω 112 speaker cab. Since your amp can handle a 2Ω load you should be fine. looks like it will send each of those 3 speakers 266.67 watts.