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From: kimr@tektronix.UUCP (Kim Rochat)
Newsgroups: net.audio
Subject: Re: JSE-1 description (Corrections for model-2)
Message-ID: <5309@tektronix.UUCP>
Date: Mon, 22-Apr-85 14:26:51 EST
Article-I.D.: tektroni.5309
Posted: Mon Apr 22 14:26:51 1985
Date-Received: Wed, 24-Apr-85 03:01:47 EST
References: <346@lcuxc.UUCP>
Organization: Tektronix, Beaverton OR
Lines: 45

> The JSE-2 is similar in shape to the JSE-1 but a bit larger (about 48" high).
> It has a dual 12" woofer, a 6.5" midrange, a 1" tweeter (I believe these same
> drivers are used in the 1), and a .75" super-tweeter.

Actually, the Model 2's have 12 inch and 10 inch woofers, crossing over at
180 Hz to the 6.5" midrange.  There is a 2" dome midrange, and a .75" tweeter.
The only driver in common with the Model 1 is the 6.5".  

The tweeter in the Model 1's is the same tweeter found in the $1900 Thiel CS-3!

I would like to put in my 2 cents worth on the Model 2's.  When I was shopping,
I wanted a full-range speaker in a single box.  As you have probably seen, 
add-on stereo subwoofers often cost $1000 or more, so the Model 1's with 
subwoofers would cost as much as Model 2's.

I disagree with Bill's comments about "the Model 2's have a little more bass".
The Model 2 has a LOT more bass.  I had to replace my Thorens 125 turntable 
because of acoustic feedback at the tonearm/cartridge resonant frequency 
flinging the cartridge out of the groove - at 10 Hz!

The JSE's image differently than most other speakers.  They image like dynamite
between the speakers, but there is very little imaging outside and above the
speakers, so you tend to place them near the side walls.  Part of the reason
for this is that the grill assemblies were designed with no regard for 
diffraction effects.  The Model 2's are designed for flat frequency response 
with the grills, and are too bright without them, so I added felt baffles 
to the inside of the grill assembly which produced a dramatic improvement in
the size of the soundstage.  

The Model 2's will reproduce orchestras at about 1/2 actual size.
In small groups, standing performers appear to be about 5' tall (the speakers 
are really 42" tall), so there is a slight reduction of the actual size.

Anyway, I recently had an opportunity to listen to the Model 1's with similar
associated equipment.  I could recognize the similarity in the midrange
clarity, but was completely turned off by the miniature sound stage 
(36" performers) and the lack of bottom end. (This was with the grills off,
as JSE now recommends for the Model 1's).  My first reaction was that they
needed to be placed on stands.

They are both good values for the money, but for me the increased image
size, bass response, and dynamic ease are well worth the additional bucks.

Kim Rochat
tektronix!kimr