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.
Sent: Friday, April 25, 2003 2:28 PM
To: Vic Rosenthal
Cc: Elecraft Reflector
Subject: [Elecraft] external speaker in EC2 cabinet?
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
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
problem is that the box is not tall enough to provide good base
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
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
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
it from prototype to production. Ideally we would integrate an
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....
Post by Vic Rosenthal Post by Lee Buller
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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