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AudioKinesis 112 Cab

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#921
Kringle77, I'm actually pretty excited about what the new woofer will do for the 212. I wasn't looking forward to the 212 being only marginally more efficient than the 112, especially since I intend for the 212 to be my flagship model.
 
#922
DukeLeJeune said:
Kringle77, I'm actually pretty excited about what the new woofer will do for the 212. I wasn't looking forward to the 212 being only marginally more efficient than the 112, especially since I intend for the 212 to be my flagship model.
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Yeah, a 4ohm 2x12 that has basically the same tonal character as the Thunder Child 1x12 along with higher usable max SPL will probably appeal to a lot of bass players (of course, the 4ohm 1x15 will as well).
 
#925
Joebone said:
So what's gonna happen if you run a 4-ohm and 8-ohm Thunderchild 12 off of the same amp?
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shrigg said:
2.67 ohms... Dunno if I'd recommend it.
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Shrigg's answer is the correct one in general, and he had no way of knowing the Thunderchild might be a borderline exception because I've never gone public with this information before.

The Thunderchild might be described as a "high 4 ohms" cab; the impedance curve actually stays above 5 ohms across most of the spectrum, with a single dip down to 4 ohms just south of 2 kHz. A more strictly accurate description would be that it's a "5 ohm cab", but my marketing department vetoed that, so don't tell anybody I told you.

Now if the "8 ohm" Thunderchld woofer ends up being a "high 8 ohms", which is what I've requested, we might possibly end up with, in effect, 5 ohms + 10 ohms = 3.3 ohms. And some beefy 4-ohm-capable amps might be happy with a 3.3 ohm load.

Until I know what the impedance curve of an 8-ohm Thunderchild actually looks like, this is all speculation, though not goundless speculation. But don't spend any money based on it just yet.
 
#926
Help me understand this concept further: Would the 4 ohm cabinet be louder than the 8 ohm if they were wired parallel? Or would each cab be equally loud, working together as a combined 2.67 ohm load?
 
#928
shrigg said:
Help me understand this concept further: Would the 4 ohm cabinet be louder than the 8 ohm if they were wired parallel? Or would each cab be equally loud, working together as a combined 2.67 ohm load?
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The lower impedence cab would get more power (& sound louder) than the higher impedence -- how much more depends on the amp(s) you're using.

p.s.edit -- unless you're using two (one for each cab) conventional all-tube amps (or at least tube power amps).
 
#929
JimmyM said:
i've waited this long, i can wait a little longer ;) duke will sell no wine before its time, and i'm down with that.
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I dunno... since you've been running around with the Micro VR, it might be too big for you!

Although I've always thought the Micro VR brought a rather, erm, "cinematic" impression when used live :D

stonehenge_2.jpg
 
#933
Just tuning into this thread after hearing glowing praise for the Thunderchild.

Here is my wish list for aesthetics. (Trivial ,but hear me out)

Design and build the cabinet so you can put some type of speaker grill or grill cloth over the entire face of the cab (Horn included)

I know it's trivial, but then it would look less like a PA speaker and more like a bass cab. Plus, I've never been a fan of the speaker grill that screws on over the driver. That looks like garden variety auto (car) subwoofer to my eyes. Effective and it works (and probably cheap and easy) But somehow it looks cheap to me.

Packaging can go a long way to the over all vibe. Just sayin.'
 
#934
GRoberts said:
Packaging can go a long way to the over all vibe. Just sayin.'
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Your suggestions would necessitate compromising sound quality at the target price point, unfortunately. Duke and I discussed this a lot when he showed me the prototype, otherwise I would just let him give you his take. Hopefully he will do that anyway though...:cool:
 
#935
Passinwind said:
Your suggestions would necessitate compromising sound quality, unfortunately. Duke and I discussed this a lot when he showed me the prototype, otherwise I would just let him give you his take. Hopefully he will do that anyway though...:cool:
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I understand that answer and thought someone might say that.
There is already a grill over the woofer so this answer must be more about the horn I have to imagine. I find it hard to believe however with all the bass cabs on the market (that have grill cloth) that adding grill cloth over both drivers would be significant.

I have an audiophile background, so yes I am familiar with the concept that grill cloth affects the sound. But in my experience, the different was hair splitting and you had to 'critically' listen for it. You know?

Just kicking the idea around for edification. Not trying to be argumentative.
 
#936
GRoberts said:
I understand that answer and thought someone might say that.
There is already a grill over the woofer so this answer must be more about the horn I have to imagine. I find it hard to believe however with all the bass cabs on the market (that have grill cloth) that adding grill cloth over both drivers would be significant.

I have an audiophile background, so yes I am familiar with the concept that grill cloth affects the sound. But in my experience, the different was hair splitting and you had to 'critically' listen for it. You know?

Just kicking the idea around for edification. Not trying to be argumentative.
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I made every one of those points to Duke, and I'm sure I'm not the only one to do so. Grill cloth will not really work well with that woofer, IME with the stock 3012LF and 3015LF in my own DIY builds. And Duke was adamant about not using a recessed baffle, again for sound quality reasons. It's all about prioritizing compromises, always a tough balancing act.

These cabs are really targeted at people who are into critical listening more than hearing with their eyes, IMHO. The horn configuration alone is pretty indicative of that, I think. ;)
 
#937
Passinwind said:
I made every one of those points to Duke, and I'm sure I'm not the only one to do so. Grill cloth will not really work well with that woofer, IME with the stock 3012LF and 3015LF in my own DIY builds. And Duke was adamant about not using a recessed baffle, again for sound quality reasons. It's all about prioritizing compromises, always a tough balancing act.

These cabs are really targeted at people who are into critical listening more than hearing with their eyes, IMHO. The horn configuration alone is pretty indicative of that, I think. ;)
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Thanks for sharing. Recessed baffles can create sound wave traps I suppose. Just trying to learn how. For the record, it's not that I think the Thunderchild looks unacceptable or cheesy. I am just one of those people that like clean lines as part of the vibe. Thanks again Passinwind!
 
#938
GRoberts said:
Thanks for sharing. Recessed baffles can create sound wave traps I suppose. Just trying to learn how. For the record, it's not that I think the Thunderchild looks unacceptable or cheesy. I am just one of those people that like clean lines as part of the vibe. Thanks again Passinwind!
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Duke is doing everything he can to minimize diffraction effects, which a recessed baffle creates in spades.

You're welcome. The cab looks nicer in the flesh, again IMHO.
 
#940
GRoberts said:
Thanks for sharing. Recessed baffles can create sound wave traps I suppose. Just trying to learn how. For the record, it's not that I think the Thunderchild looks unacceptable or cheesy. I am just one of those people that like clean lines as part of the vibe. Thanks again Passinwind!
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in a way, i kind of agree with you...i love the look of cabs with grillcloth. but duke has a design goal with his cabs...maximizing dispersion, and it's true that dispersion does get cut down somewhat with a cab with grill cloth and a recessed baffle. to some it's no big deal, like i'm not at all bothered by my cabs with recessed bafflles. but it is noticeable enough to where duke decided to do it this way. not every cab is made for everyone, and that's cool.
 
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