Re: M100 max spl
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Joined: Mar 2014
Posts: 1,593 Likes: 1
connoisseur
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OP
connoisseur
Joined: Mar 2014
Posts: 1,593 Likes: 1 |
Yeah. The level of foolproof design in Ians stuff is pretty valuable if they dont audibly quit at high output. Kudos!
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Re: M100 max spl
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Joined: Mar 2001
Posts: 1,387 Likes: 8
President connoisseur
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President connoisseur
Joined: Mar 2001
Posts: 1,387 Likes: 8 |
Hi Mojo, Did you mean "under" the white dust cap?
Ian Colquhoun President & Chief Engineer
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Re: M100 max spl
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
No, "in". The black dust cap was acting as a black body and hence absorbed all radiation falling on it causing the driver to exceed thermal limits. Now it's a white body reflecting all incident radiation and hence it's cooler.
Sorry to be giving away all your design secrets.:)
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: M100 max spl
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Joined: Mar 2014
Posts: 1,593 Likes: 1
connoisseur
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OP
connoisseur
Joined: Mar 2014
Posts: 1,593 Likes: 1 |
Like water with ir?
You geek! I like it.
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Re: M100 max spl
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Joined: Mar 2014
Posts: 1,593 Likes: 1
connoisseur
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OP
connoisseur
Joined: Mar 2014
Posts: 1,593 Likes: 1 |
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Re: M100 max spl
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Joined: Dec 2003
Posts: 2,021 Likes: 1
connoisseur
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connoisseur
Joined: Dec 2003
Posts: 2,021 Likes: 1 |
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Re: M100 max spl
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: M100 max spl
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Like water with ir?
You geek! I like it. Geez! Water is like a notch filter. https://upload.wikimedia.org/wikipedia/c...iquid_water.png
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: M100 max spl
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Joined: Mar 2014
Posts: 1,593 Likes: 1
connoisseur
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OP
connoisseur
Joined: Mar 2014
Posts: 1,593 Likes: 1 |
Band pass filter. Doesn't like Visible as much as UV and IR. Loves to gobble up invisible wavelengths. Yum!!
Neato eh?! Like fire conducting electricity (DC rectifier.) Nature is weird.
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Re: M100 max spl
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
The max SPL of a speaker is a tough question to answer. Let's discuss this free space at one meter.
At 200 Hz and up, a single M100 will deliver 120 dB. As you go below 200 Hz, delivering high SPL becomes more difficult. But the triple 6.5's in an M100 should still do in excess of 110 dB at the 80 Hz crossover level.
What most don't understand is 110 dB will drive you from the room, and 120 dB will cause hearing damage fairly quickly.
Then add into the mix the room gain, and a pair of speakers, and I cannot imagine a scenario in a home in which a pair of M100's would not be able to generate 115 dB at the listening position from 80 Hz and up.
Back to "driving you from the room" ... in our blind tests here, I have run a 90 dB sine wave (measured from the listening position) and asked people to guess the SPL. It was so loud the lowest guess was 100 dB. The average guess was 107-108 dB.
Does this help answer the question? What I don't understand then Craig, is why there are talks of developing the T-Rex speaker that, anecdotally, is being conceived to deliver 130 dB anechoicaly. This sounds like insanity!
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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