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#433983 - 10/26/19 05:06 AM Weird dream
bridgman Offline
axiomite

Registered: 08/25/04
Posts: 6228
Loc: Bowmanville, Ontario, Canada
Was tempted to put this in "What's new at Axiom"...

So without pre-amble I found myself in an Axiom listening room, with Ian and <someone I didn't recognize> about to show off some new mains. LFR1100 size but not sure what they were.

What caught my eye though was the subwoofers. One in each corner, with what appeared to be an 18-24" woofer in each. The woofer cone seemed relatively conventional, but the surround was more like the kind of material you see wrapped around the hose you plug into a built-in vacuum cleaner system.

Electronics were switched on, and the cone slowly pulled back maybe 2 feet into the subwoofer enclosure, then pushed out almost as much before settling back into normal position.

I asked Ian how that could possibly work and how the cone stayed in the correct position... he didn't say anything about why the cone didn't fall over but pulled out some plots and explained that all the new subs had this driver surround, and that without it you got distortion here and here (points to glitches on the charts) at 7 Hz and high SPLs.

The system sounded great though, and the cones didn't move anywhere near as much as they did during power-on.

If Ian ever *does* make those subs, we'll have to get a couple out to Mojo for a video shoot. Or a dance-off.


Edited by bridgman (10/26/19 05:06 AM)
_________________________
M60ti, VP180, QS8, M2ti, EP500, PC+ 20-39
M5HP, M40
LFR1100 actives picked up Friday 13th

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#433986 - 10/26/19 10:38 AM Re: Weird dream [Re: bridgman]
Mojo Offline
axiomite

Registered: 01/21/07
Posts: 6496
Memories, dreams, reflections...as teens we dream of fleshy things. As we age, pulsating drivers take over.

I think when you first asked Ian your question, that was your brain hinting that the dancing M100 drivers in my video were experiencing severe distortion. That is actually very true because drivers are not supposed to roll around like that. I can play that same tune on the 800, feed it all my Onk has got, and both voice coils stay within their respective magnetic gaps leading to linear pistonic action rather than gyrations.

The M100s are simply not rated to operate down to 10Hz. The fact I can pump that tune into them, in 2.0, at 1800W+ peaks per channel and not rip apart the drivers from their surrounds or cook their voice coils is a testament to their engineering.

Edit: they also didn't sound bad. That's another Axiom secret. You hear it in their speakers and amplifiers. You're simply not offended or surprised when their products are pushed beyond specified limits.


Edited by Mojo (10/26/19 10:42 AM)
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5x2,M3,M50 v4
had v2
N2, N3 someday

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#434003 - 10/27/19 02:35 AM Re: Weird dream [Re: bridgman]
brendo Offline
aficionado

Registered: 10/14/14
Posts: 505
Loc: West coast Canada
Reminds me of a thread a couple years ago where some one was worried about running a pair of M3 as large in a 2 channel.

At one point Ian chimed in. And very scientifically said something along the lines of You can not damage our woofers due to design foresights of such occurrences.

It was very straight forward and very confident {Years of facts/studies}
Now that you've resurfaced the vid I'm sure they would have contacted you if you needed to worry.

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#434023 - 10/27/19 09:26 PM Re: Weird dream [Re: bridgman]
Mojo Offline
axiomite

Registered: 01/21/07
Posts: 6496
I don't think you can cook an M3 with a typical receiver unless you play test tones but I can sure as shit light it on fire with a 1500 and good ol' music. Not a 1000 though. I tried. smile
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5x2,M3,M50 v4
had v2
N2, N3 someday

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#434025 - 10/27/19 10:25 PM Re: Weird dream [Re: Mojo]
craigsub Offline
connoisseur

Registered: 12/15/03
Posts: 1848
One of the dream systems that one can do with Axiom is 5 or 7 M3's and an EP800. A seamless soundstage and 13 Hz bass, with not a hint of congestion at even high level SPL.
_________________________
LFR1100 actv, LFR1100, M100, M50, VP180HP, VP150, 3xEP800, M3, EP350, ADA1000-5, ADA1500-4 + 1500-6

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#434028 - 10/27/19 10:40 PM Re: Weird dream [Re: bridgman]
Mojo Offline
axiomite

Registered: 01/21/07
Posts: 6496
I'd do that for movies. Music needs improved mids though unless you like your music to be more "M3-like".
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5x2,M3,M50 v4
had v2
N2, N3 someday

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#434029 - 10/27/19 10:44 PM Re: Weird dream [Re: craigsub]
rrlev Offline
local

Registered: 09/25/09
Posts: 247
Loc: Boston Area
Originally Posted By craigsub
One of the dream systems that one can do with Axiom is 5 or 7 M3's and an EP800. A seamless soundstage and 13 Hz bass, with not a hint of congestion at even high level SPL.

Are you thinking 5.1 / 7.1 or something else? And why not an EP600? (same low end just not as loud).

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#434030 - 10/27/19 10:50 PM Re: Weird dream [Re: rrlev]
craigsub Offline
connoisseur

Registered: 12/15/03
Posts: 1848
From 80 Hz and up, 5 M3's will play louder than a single EP800. Keep in mind, it requires 16 times the movement of air at 20 Hz than it does at 80.
_________________________
LFR1100 actv, LFR1100, M100, M50, VP180HP, VP150, 3xEP800, M3, EP350, ADA1000-5, ADA1500-4 + 1500-6

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#434031 - 10/27/19 10:59 PM Re: Weird dream [Re: bridgman]
Mojo Offline
axiomite

Registered: 01/21/07
Posts: 6496
Most posts on here go non-linear and this one thankfully is no exception.
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5x2,M3,M50 v4
had v2
N2, N3 someday

Top
#434036 - 10/28/19 12:11 AM Re: Weird dream [Re: craigsub]
rrlev Offline
local

Registered: 09/25/09
Posts: 247
Loc: Boston Area
Originally Posted By craigsub
From 80 Hz and up, 5 M3's will play louder than a single EP800. Keep in mind, it requires 16 times the movement of air at 20 Hz than it does at 80.

What is the proposed set up for the M3s?
And are we talking reasonable volumes for a reasonable use case?

I was assuming you were originally proposing a cost effective great sounding system

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