6X12 build?

[Matt O]

Tecamp made a lightweight 6x12, it was a one handed lift. But if had a funny impedance so I ditched it because valve amps. It isn't a great configuration if you are trying to build for practicality, staggered vertical 4x12 comes out a much more useful form actor and impedance.

So I was right, oddball impedance is what killed the 612? 4ohm tube amp won't play well with 5.34 ohm cab?

 

[Clivus58]

I kinda like the idea of running two cabs.... One on each side of the stage. It seems to create a lot of presence, but I can still hear everyone else. If I need more juice in the room, I DI to the PA system.

 

[Matt O]

I'm just having some fun with ya. I now I'm a weeny. Last year I sold my 150 pound Trace Elliot rig, and now my total rig (head, 2x12 cab) is under 50. At 2am, I am a happy man.

It's all good buldog, I'm just having fun too. But I'm serious about Sheryl, playing an embassy makes her cool. Sorry, but that song doesn't, but YMMV.

 

[buldog5151bass]

I had to do it with one band.

 

[Mr. Foxen]

So I was right, oddball impedance is what killed the 612? 4ohm tube amp won't play well with 5.34 ohm cab?

Prob work fine, but probably use the 8ohm tap. Just more comfortable with a straight match.

 

[iualum]

... I was thinking a ported 6x12

6x12 cabs are a rare-ish bird, but a few companies have made them Sunn, Peavey, um, some others?

Does anyone have any experience with a 6x12? Good, bad, mud? Are they rare because they suck? Super great? Meh?

Also, what 12s for bass do you recommend? I'm thinking neo to bring the weight down.

You want to build but you don't have any idea what drivers you want? Sounds like a poor plan. Neo to keep the weight down? Well of course neo. But which ones? That's the question.

A 612 makes zero sense to me, but it's your bread.

The suggested 12PR310 is a wonderful driver. For just a few bux more, though, I'd do the 12PR300 (5.3 lbs. vs. 9.3 lbs.) Each one displaces 240 cc. Air movement for 6 is 1440 cc. At $215 a pop, that's $1290. Tops out at 5 kHz. Pretty high.
Faital Pro 12PR300 12" Mid-bass Speakers - Faital Pro 12PR300 mid-bass speaker and bass 12" speaker that has a lightweight neodymium magnet - Faital Pro 12PR300 600 watt 12" high efficiency of 99dB SPL woofer for all high power mid-bass and bass applications. Faital Pro 12PR300

2 other 12s I'd consider; the Eminence Delta Lite II 2512 & Kappa Lite 3012HO.

The 2512 is an excellent driver that comes very, v-e-r-y close to 12PR300 performance for just under 2/3 the price. Driver displacement is 250 cc. 6 is 1500 cc. At $135 each, that's just $810. It goes to 4 kHz.
Eminence Delta Lite II 2512 neodymium speakers - Eminence Delta Lite II 2512 12" neodymium speaker. Eminence Delta Lite II 2512 lightweight neodymium speakers.

The 3012HO displaces more air. Its Vd is 330 cc. That's 1980 cc for 6. Pretty serious. Each is $190. 6 are $1140. It goes to 3.5 kHz.
Eminence KappaLite 3012HO speakers - Eminence KappaLite 3012HO 12" neodymium mid-bass speaker. Eminence KappaLite 3012HO lightweight neodymium speakers.

What you should really do is build a 218 (or better still, two 118s) employing the Faital 18FH500. Each moves 1080 cc, 2160 cc for 2. And at $345, 2 are only $690. It goes to 3.15 kHz. Not high enough for you? Add 2 18Sound 6ND410s for another $290 & you're still at just $980. Massive displacement for small money. And like the proverbial saying goes, there ain't no re-placement for dis-placement. This 218 or two 118s makes tons more sense that a 612. Much better, smaller, lighter, less money. Total domination .
Faital Pro 18FH500 Speakers - Faital Pro 18FH500 bass guitar speaker and subwoofer 18" speaker that has a lightweight neodymium magnet - Faital Pro 18FH500 1,200 watt 18" high efficiency of 99dB SPL woofer for all high power bass applications. Faital Pro 18FH500 and other Faital Pro speakers

Eighteen Sound Speakers - Eighteen Sound 6ND410 - Eighteen Sound 6ND410 6.5" midrange speaker has a lightweight neodymium magnet and is 102dB SPL. Eighteen Sound 6ND410 6.5" midrange speakers are available here. 18 Sound speaker components.

 

[bearfoot]

This kind of thread reminds me of the Grateful Dead's ridiculous sound system, and that makes me happy. I think the 6x12 will be great, which string are you going to run through it, and what cabs will you build for the other strings?

 

[Matt O]

Preliminary drawing has the outer dimensions at 45x33x16" which is actually a pretty manageable size.

I've decided to go sealed, saves time and tuning troubles.

Internals will be 3 sets of 2 - horizontal baffles isolating each set and solid wood bracing.

 

[Matt O]

This kind of thread reminds me of the Grateful Dead's ridiculous sound system, and that makes me happy. I think the 6x12 will be great, which string are you going to run through it, and what cabs will you build for the other strings?

I'm thinking low F#

That'll be my next build

 

[Matt O]

You want to build but you don't have any idea what drivers you want? Sounds like a poor plan. Neo to keep the weight down? Well of course neo. But which ones? That's the question.

Eeeasy there, that's why I asked.

A 612 makes zero sense

That is one of the main reasons I want to build it.

...the Eminence Delta Lite II 2512...

This is most likely the driver I'm going with, if I go neo.

I appreciate the info you laid down on the other drivers, thanks!

What you should really do is build a 218 (or better still, two 118s) employing the Faital 18FH500. Each moves 1080 cc, 2160 cc for 2. And at $345, 2 are only $690. It goes to 3.15 kHz. Not high enough for you? Add 2 18Sound 6ND410s for another $290 & you're still at just $980. Massive displacement for small money. And like the proverbial saying goes, there ain't no re-placement for dis-placement. This 218 or two 118s makes tons more sense that a 612. Much better, smaller, lighter, less money. Total domination .
Faital Pro 18FH500 Speakers - Faital Pro 18FH500 bass guitar speaker and subwoofer 18" speaker that has a lightweight neodymium magnet - Faital Pro 18FH500 1,200 watt 18" high efficiency of 99dB SPL woofer for all high power bass applications. Faital Pro 18FH500 and other Faital Pro speakers

Eighteen Sound Speakers - Eighteen Sound 6ND410 - Eighteen Sound 6ND410 6.5" midrange speaker has a lightweight neodymium magnet and is 102dB SPL. Eighteen Sound 6ND410 6.5" midrange speakers are available here. 18 Sound speaker components.

I had a brief experimentation phase with 18s. Not my cuppa as they say.

 

[iualum]

I had a brief experimentation phase with 18s. Not my cuppa as they say.

An 18 ain't an 18 ain't an 18. This 18 is excellent. 2 of them are superior in every way/shape/form to the 612. If you prefer to spend more to much more for larger/heavier/inferior, then have at it .

 

[Matt O]

An 18 ain't an 18 ain't an 18. This 18 is excellent. 2 of them are superior in every way/shape/form to the 612. If you prefer to spend more to much more for larger/heavier/inferior, then have at it .

Not doubting it's an excellent speaker, it's made by an excellent company.

Just curious though, not trying to start a rumble here, but how is 36" superior to 72" in a single box?

You have a point on cost though, a 612 is a costly build.

 

[Hamish MacCleod]

....not trying to start a rumble here...

Nice pun.
Rondo

 

[Matt O]

Nice pun.
Rondo

Thanks, I'll be here all week.

 

[CL400Peavey]

Yep. Interesting.

And size wise, 612 tucks nicely between 215 and 810, with more than twice the surface of a 215 and almost the same speaker surface as 810. Makes me wonder why there aren't more 612s out there. I'm guessing oddball impedance scared people off maybe?

Its because a 612 is a horrible design. It beams like crazy, sourcing drivers is tough, and its width sucks. An 810 is slightly less crappy, and a 215 is superior.

If you do go with a 612, I would get a power amp as well.

 

[iualum]

Not doubting it's an excellent speaker, it's made by an excellent company.

Just curious though, not trying to start a rumble here, but how is 36" superior to 72" in a single box?

You have a point on cost though, a 612 is a costly build.

Because you're thinking in just 2 dimensions. 3D is where it's at. It's surface area times Xmax. That's called displacement. Air movement. I listed it with each driver. How'd you miss it?

 

[Matt O]

Because you're thinking in just 2 dimensions. 3D is where it's at. It's surface area times Xmax. That's called displacement. Air movement. I listed it with each driver. How'd you miss it?

Ah, got it.

Now you have me second guessing myself with reason.

Not cool.

Edit:

 

[Omega Monkey]

Just curious though, not trying to start a rumble here, but how is 36" superior to 72" in a single box?

Oh dear.

You don't just add the diameters of the speakers. You have to get the area, which means pi*r^2. An 18 is 9*9*pi, a 12 is 6*6*pi. So right off the bat you're looking at 81pi vs 36 pi, so an 18 is almost 3 12s, just from nominal surface area. When you add in that 18s are typically going to have much higher xmax (which means higher displacement per square inch of area) and also a lower Fs, plus weigh and cost a fraction of the 12s, all that stuff adds up.

Anyway, if *I* was going to build a 6x12 for bass (which I doubt I would), I would be doing it to get that vintage sound but with some modern upgrades. So I would use 1/2" plywood with a moderate amount of bracing, and use 6 bass friendly guitar 12s (ie decent xmax, in the 3-5mm range hopefully and 50-75+ watts each of power handling).

 

[Omega Monkey]

Because you're thinking in just 2 dimensions. 3D is where it's at. It's surface area times Xmax. That's called displacement. Air movement. I listed it with each driver. How'd you miss it?

Actually, he's thinking in ONE dimension, just diameter.

 

[Spector2112]

Omega Enclosures in Ohio makes them, custom finishes, etc.


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