[Elecraft] external speaker in EC2 cabinet?

Fri Apr 25 15:37:01 2003

The simplest approach here might be to just mount a small computer speaker
cube inside the EC2 enclosure.  Mine are 3" cubes.  Quality is very good.
That would leave some space inside the EC2 for a power supply.

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Wayne Burdick
> Sent: Friday, April 25, 2003 2:28 PM
> To: Vic Rosenthal
> Cc: Elecraft Reflector
> Subject: [Elecraft] external speaker in EC2 cabinet?
>
>
> 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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