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Efficiency of radios - Page 4

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Posted by NotMe on January 26, 2009, 12:35 am

: NotMe wrote:
: > Speakers likewise are designed for performance not efficiency.
: Not true of Sound Reinforcement speakers.
: Graham

No personal experience with SRS but from 40+ years in marketing and
engineering I would expect the efficacy factory takes second place.

Posted by Eeyore on January 27, 2009, 2:11 am

NotMe wrote:

In SR ? No, it's a balance.

Top end cone speaker based SR speakers can easily reach 102 dB with 1 W
of input @ 1m. Cheaper ones will still manage 95 - 98dB. Compression
driver horns may be in the 106 - 112 dB range @ 1W @ 1m.


Posted by BobG on January 26, 2009, 11:41 am
 On Jan 25, 11:12pm, david.willi...@bayman.org (David Williams) wrote:

Naah. Most people statistically judge a 10dB increase as 'twice as
loud'. These studies are cited in the Journal of the Audio Engineering
Society. Sorry I can't remember the volume and issue off the top of my
head, but I do have about 30 years of the journal on a bookshelf.

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