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#430293 - 10/07/18 05:19 PM Why do Axiomb subs stop at 12" driver size?
bman84 Offline
enthusiast

Registered: 09/29/18
Posts: 35
Loc: Toronto, Ontario
Just curious, why don't Axiom subs go any larger than 12"?
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#430294 - 10/07/18 07:33 PM Re: Why do Axiomb subs stop at 12" driver size? [Re: bman84]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 4915
Probably because they opted for a smaller cone with more excursion to reduce cabinet volume and hence increase WAF and lower production and shipping costs. It's cheaper to build a higher powered amp to give more excursion than use a lower powered amp with a larger cone area. It's easier to manage distortion with a smaller diameter cone as well. Ian has always said he's sacrificed some SPL to optimize linearity. With the v4 sealed subs, he's nailed it.

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#430295 - 10/07/18 11:02 PM Re: Why do Axiomb subs stop at 12" driver size? [Re: Mojo]
bman84 Offline
enthusiast

Registered: 09/29/18
Posts: 35
Loc: Toronto, Ontario
Originally Posted By Mojo
Probably because they opted for a smaller cone with more excursion to reduce cabinet volume and hence increase WAF and lower production and shipping costs. It's cheaper to build a higher powered amp to give more excursion than use a lower powered amp with a larger cone area. It's easier to manage distortion with a smaller diameter cone as well. Ian has always said he's sacrificed some SPL to optimize linearity. With the v4 sealed subs, he's nailed it.


Makes sense. WAF = wife acceptance factor?
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Ordered:
2 M5HPv4 In-Wall
1 VP180v4
4 M3v4 In-Wall
4 M3v4 In-Ceiling
1 EP600v4
1 ADA1000-3

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#430296 - 10/07/18 11:14 PM Re: Why do Axiomb subs stop at 12" driver size? [Re: bman84]
craigsub Offline
connoisseur

Registered: 12/15/03
Posts: 1639
If one considers all the factors, whether in a sealed or vented sub, a pair of 12's will have about the same output and extension as a single 18. It's easier to put the 12's into an elegant cabinet and it's cost effective as well.

Axiom could easily have an 18 - but when building drivers, building 2000 twelves at a time is more cost effective than building 1000 twelves and 500 eighteens.
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#430297 - 10/08/18 01:39 AM Re: Why do Axiomb subs stop at 12" driver size? [Re: bman84]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 4915
Yes to WAF. I think a 15 or 18 would also wreck Debbie if she's still assembling the drivers.

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#430298 - 10/08/18 09:08 AM Re: Why do Axiomb subs stop at 12" driver size? [Re: craigsub]
bman84 Offline
enthusiast

Registered: 09/29/18
Posts: 35
Loc: Toronto, Ontario
Makes sense. An 18" cabinet looks like a euro sized washing machine.
_________________________
Ordered:
2 M5HPv4 In-Wall
1 VP180v4
4 M3v4 In-Wall
4 M3v4 In-Ceiling
1 EP600v4
1 ADA1000-3

Top
#430299 - 10/08/18 09:17 AM Re: Why do Axiomb subs stop at 12" driver size? [Re: Mojo]
bman84 Offline
enthusiast

Registered: 09/29/18
Posts: 35
Loc: Toronto, Ontario
Haha. WAF is, sadly, part of my equation. WAF = 1/(cabinet size)^X , where X = WCF (wife chill factor, lower is better)
_________________________
Ordered:
2 M5HPv4 In-Wall
1 VP180v4
4 M3v4 In-Wall
4 M3v4 In-Ceiling
1 EP600v4
1 ADA1000-3

Top
#430300 - 10/08/18 04:43 PM Re: Why do Axiomb subs stop at 12" driver size? [Re: bman84]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1833
Loc: Canada
Lol
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Screen is going back to 4' off the front wall.
L/C/R's will be back at ~ 12' listening distance.




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#430301 - 10/08/18 04:52 PM Re: Why do Axiomb subs stop at 12" driver size? [Re: bman84]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1833
Loc: Canada
It would be pretty neat to see what they could do.
I've been daydreaming about multiple 10 inch arrays. I seen one on tv once. 4 or was it 5 10" woofers in one large/long/short cabinet.
Been thinking about the potential ever since.
Wonder if you could fit 4 10" woofers in the EP800 and just power it with external amps.
_________________________
Screen is going back to 4' off the front wall.
L/C/R's will be back at ~ 12' listening distance.




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#430313 - 10/09/18 12:37 AM Re: Why do Axiomb subs stop at 12" driver size? [Re: bman84]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1833
Loc: Canada
3 would fit.
Wonder how the numbers would work on paper.
3 10's would have more suface area than 2 12's, no?
Its already a nice size cabinet. Might need to shift around internal bracing...
Wonder if one ADA 1000 would be appropriate.
Or 3 built on/in amps.
I can imagine it'll be pretty tough to improve on the EP800 though.
Do it! Do it! Do it!
Just joking.
I'll just daydream over here in the corner.
Lol.
_________________________
Screen is going back to 4' off the front wall.
L/C/R's will be back at ~ 12' listening distance.




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