[Elecraft] external speaker in EC2 cabinet?

[Daniel Reynolds]

How about an outboard speaker with power supply, ... and AF DSP?

- Daniel/AA0NI

--- Wayne Burdick <n6kr@elecraft.com> wrote:
> Vic, Lee:
> 
> An external speaker kit is a great idea, but personally I would want it to be
> in
> an EC2 cabinet, not something taller. (It always annoyed me that my IC730's
> speaker was taller than the IC730 itself--this is true of some other
> transceivers and their accessory speakers, too.)
> 
> We tried putting a front-facing speaker into an EC2 cabinet quite a while
> ago.
> What we found is that you get lots of high end but poor bass and midrange.
> The
> problem is that the box is not tall enough to provide good base "backing"
> when
> the speaker is mounted on the front panel. When the speaker is mounted on the
> top, bass and midrange is quite strong because the larger dimension of the
> box
> and the top cover itself provide good low-end emphasis.
> 
> What we concluded is that to use an EC2 as a speaker cabinet, you'd have to
> either use "porting" techniques (as in the Bose speakers, among others), or
> include an active EQ network and audio amplifier. The latter is OK, although
> it
> would require a 12V supply so it's a little less desireable than a
> non-powered
> speaker with similar performance. Can this be done with porting or other
> acoustic design techniques? I'm not sure.
> 
> While we don't have time in our present schedule to delve into this deeper,
> we'd
> certainly like to encourage others' efforts to put a speaker in an EC2. This
> would, as you mentioned, be a very viable product, and we'd get involved
> taking
> it from prototype to production. Ideally we would integrate an optional power
> supply into the same cabinet, so the speaker and related electrical and
> mechanical components should take up the minimum possible space. 
> 
> Anyone game? There are EC2 cabinets in stock just itching to be used by audio
> experimenters....
> 
> 73,
> Wayne
> N6KR
> 
> 
> Vic Rosenthal wrote:
> > 
> > Lee Buller wrote:
> > 
> >  >  Quality speaker for the K2.
> >  > Designed to look good, but also designed to sound good.
> > 
> > I think this is a good idea from a commercial point of view.  People
> > have always been willing to pay a premium for the 'matching' speaker for
> > their rig.  A speaker with an Elecraft emblem on it would sell well.
> > Technically, I've found that it's hard to get a speaker that sounds good
> > on CW.  Maybe it could have a switch and some passive components to
> > optimize response for CW or SSB.
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