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AudioKinesis 112 Cab

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Duke also makes an 8ohm larger box with the stock 3012LF and a lower tuning like the 12/6. If you have the power at 8ohms, and want a deeper, wider low end, that would be a good option, as would the 12/6 type build.

Yeah, I'm not pushing that cab, which is called the "MRL" (pronounced "Merle"... stands for multi role loudspeaker), because it really doesn't offer a worthwhile difference relative to the fEarful 12/6/1. The difference is bighorn vs cone+little horn. To borrow from Passinwind's metaphor, they're both apple pie, just made with different apples.
 
I'm guessing the 2x12 design will use a stock 8 ohm woofer for a total 4 ohm load.

That is probably the plan.

The modified 4ohm driver that Duke acquired for the ThunderChild seems to have a unique voicing to it that I'm pretty sure I'd prefer over the stock 8ohm Kappalite 3012LF -- not quite as deep, but tighter (with a cabinet tuning to match).
 
That is probably the plan.

The modified 4ohm driver that Duke acquired for the ThunderChild seems to have a unique voicing to it that I'm pretty sure I'd prefer over the stock 8ohm Kappalite 3012LF -- not quite as deep, but tighter (with a cabinet tuning to match).

I don't know enough about electro-acoustics to know if stuffing a 3012LF in a smaller box with a higher tuning would result in the same tone or not -- I'm just making an assumption.
 
So wait, is that actually in the works? Because I was already imagining a TChild with two woofer cones instead of one, at 4 ohms, in a tall-but-narrow box, would be sheer awesomeness.

Yeah, the 2x12 version is the cab JimmyM has been raving about all this time after playing the prototype, and Duke is tuning it for PA use as well as bass guitar.

Although, there is apparently some "secret design feature" that he is under strict orders not to reveal. I'm curious myself, as I have some theories, but I don't know anything for sure.
 
The modified 4ohm driver that Duke acquired for the ThunderChild seems to have a unique voicing to it that I'm pretty sure I'd prefer over the stock 8ohm Kappalite 3012LF -- not quite as deep, but tighter (with a cabinet tuning to match).
I don't know enough about electro-acoustics to know if stuffing a 3012LF in a smaller box with a higher tuning would result in the same tone or not -- I'm just making an assumption.

Actually the key is often to tune LOWER if one wants to achieve what some define as "tight". I've talked about it in my threads, and a little bit here too: http://www.talkbass.com/wiki/index.php/Shelf_extension . Some real time and understanding in a cab sim program will illustrate what goes on... Once you get to a certain threshold in size for any particular driver it's difficult not to have a boomy midbass, but I believe Duke is well south of that, as am I with the fEarfuls in stock tuning, and even more so when you lengthen the porting (which I personally do).

With commercial cabs of too small size for the driver, it becomes apparent, because even when you roll off the lowest bass EQ they will tend to boominess still, and if you do not, are more prone to driver farting because of tuning too high relative to the incoming content's energy distribution.

But with the right driver, enclosure size, and tuning it is possible to have good bass extension and yet a perception of deeper bass. Of course in bass player circles it is very hard to discuss this stuff since many are still convinced they are hearing primarily fundamentals when in fact they are hearing an octave or more above the fundamental and calling that "deep".
 
Yeah, the 2x12 version is the cab JimmyM has been raving about all this time after playing the prototype, and Duke is tuning it for PA use as well as bass guitar.

Although, there is apparently some "secret design feature" that he is under strict orders not to reveal. I'm curious myself, as I have some theories, but I don't know anything for sure.
i wouldn't say "strict." but i gave my word and duke's my bro. it is two 8 ohm 3012lf's, though, unless duke did something different recently, but that's no big secret.
 
I'm guessing the 2x12 design will use a stock 8 ohm woofer for a total 4 ohm load.

Yup, the 212 will use the stock 3012LF.

You know a 2x12 cab with the same woofers and voicing as the ThunderChild would be right up my alley.

Once the 212 has been launched, a semi-custom 2x12 with Thunderchild woofers could probably be done using the same box - your choice of 2 or 8 ohms. But I'm not inclined to buy a production run of 8-ohm versions of the Thunderchild woofer when the 3012LF is available off-the-shelf. The voicing won't be identical, but I'm pretty confident there will be a fairly strong family resemblence.

So wait, is [the 2x12] actually in the works?

I designed the prototype 212 cab over a year ago and sent it to JimmyM, who discovered the PA possibilities of the cab. He is also the one who suggested the switch to gently roll off the top end (not in so many words, but the switch was my translation of his comments). Jimmy said he wanted a pair, so when I got the prototype back I redesigned the crossover, changing to a more PA-friendly compression driver along the way. Since then I've made a few other changes to the design as I've learned things here and there. I'm quite embarassed to say that Jimmy is still waiting for his pair, but at least I didn't take money from him so he hasn't been out-of-pocket all this time.
 
btw, thanks for that, duke! money's been a little scarce lately with the kids in ac school ;) should get better really soon since they're done at the end of the year, though, so it's actually quite fortuitous that it worked out that way. i'm really looking forward to them but all in good time.
 
The modified 4ohm driver that Duke acquired for the ThunderChild seems to have a unique voicing to it that I'm pretty sure I'd prefer over the stock 8ohm Kappalite 3012LF -- not quite as deep, but tighter (with a cabinet tuning to match).

The cabinet tuning I'd really like to do would be a vented box tuned so that its response approximates a good sealed box, but goes considerably deeper. The Thunderchild is fairly far removed from that ideal, but the characteristics of the stock 3012LF woofer will allow the 212 will come a bit closer.
 
Interesting discussion!

To help readers of this thread get a better feel regarding the size of the Thunderchild, here is a picture of the TC next to a 'typical sized' 212 cab. And by the way, the TC really 'likes' that Markbass F500.... really nice match-up regarding low end response, size and EQ power IMO!

As has been discussed above, I really like the nice 'compromise' Duke achieved between a more standard two way 'mass market' 112, and the 12/6 'stock' 8ohm 3012LF boxes. Much more real low end and max SPL than any production 12 I've heard (with the better mid dispersion bonus), but smaller and 'tighter' than the stock LF loaded boxes, and more appropriate for the typical micro head. And, a bit more going up way up top without having to go with a 3 way design (i.e., 12/6/1). Pretty cool, and again, a very impressive stand-alone small cab that can IMO and IME get almost anyone through any type of gig when needed.

I again think once people talk about needing 'more' volume or low end, there are many other options, and combining two TC's doesn't make that much sense to me (i.e., a 12/6/1 with a head that puts out some real power would get you to the next level of low end and volume, at the expense of some size and convenience).

This cab is really designed nicely to be what it is... a 112 sized box that puts out enough volume and low end with a moderately powered head to cover most gigs nicely. It is a dream cab for me personally!

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