M80 v2 active drivers
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htnut
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htnut
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Are the M80's still using active drivers? At least I think I recall at one point they were.
Regardless, I'm curious...what's the difference and benefit of active vs passive drivers? Is that how the M80 achieves it's great efficiency, making it relatively easy to drive, especially for a 4ohm speaker? Does it add or enhance anything to the actual sound reproduction?
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Re: M80 v2 active drivers
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
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Unless we have a different definition of active drivers, the M80s never used active drivers. As I understand active speakers, they have an amplifier built in.
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Re: M80 v2 active drivers
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Joined: Aug 2007
Posts: 3,488 Likes: 9
connoisseur
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Active drivers have voicecoil, passive don't. Active drivers does not mean active speakers. http://en.wikipedia.org/wiki/Passive_radiator_(speaker)
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Re: M80 v2 active drivers
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Joined: May 2003
Posts: 18,044
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Well, by that definition, yes, all the drivers in M80s are active. You'd be hard pressed to find a speaker that was all passive radiators!
The only speaker in the Axiom lineup that I'm aware of using a passive radiator is the EP0.
I am the Doctor, and THIS... is my SPOON!
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Re: M80 v2 active drivers
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htnut
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htnut
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I think some used to (still do?) use a combination. The active being the "main" drivers and the passive for "tuning" if I understood EFalardeau's link correctly. A designer could use either passive drivers or reflex ports for tuning apparently.
Last edited by htnut; 02/05/10 07:22 PM.
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Re: M80 v2 active drivers
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Joined: May 2003
Posts: 18,044
shareholder in the making
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Certainly, some do, but Axiom doesn't use passive radiators except in the EP0.
I am the Doctor, and THIS... is my SPOON!
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Re: M80 v2 active drivers
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Joined: May 2002
Posts: 10,654
shareholder in the making
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Nut, yes a passive radiator(it isn't really a "driver")is a tuning device for the enclosure which is sometimes used instead of an open port.
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Re: M80 v2 active drivers
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htnut
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htnut
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Thanks guys, I'm still trying to learn enough to warrant my stay on this fabulous forum
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Re: M80 v2 active drivers
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Joined: Jul 2008
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In recent years, the only place I have seen "passive radiators" at use is in some of the "small box" high-powered sub-woofers. Since many of the speakers in these subs can be 10" and smaller, I gather the passive radiators are there to be engaged by the air that is bouncing around in the cabinet along with the "active" speaker(directly connected to the internal amp) just to emphasize additional bass.
More drivers and higher-powered amps in these cubes make them usually significantly more expensive than a regular larger box sub.
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Re: M80 v2 active drivers
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Joined: Mar 2002
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connoisseur
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My Thiel CS3.6 towers have big passive radiators and my Klipsch LF 10 subwoofer with a pair of passive radiators.
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