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Product  Review  –  Thiel  CS2.4  Floor-Standing
Speakers – July, 2003

Introduction

Thiel  Audio  is  a  medium  sized  speaker
manufacturer,  co-owned  by  Jim  Thiel,
who  is  Chief  Engineer  and  CFO,  and
Kathy  Gornik,  who  is  President  and
Marketing  Director.  Located  in
Lexington, Kentucky, the company is 25
years  old  and  has  garnered  many
awards for their various models.

The Design

This is our first review of Thiel speakers,
with  the  newly  released  model  CS2.4.
They  are  a  floor-standing  speaker,  with
a  tweeter  and  midrange  driver  that
share the same voice coil.

  This  results  in  a  coincident  sound  for
the  highs  and  mids,  meaning  that  they
are  coming  from  the  same  spot  on  the
enclosure.  It  is  a  technology  developed
in  1997  for  the  CS2.3s,  and  has  also
been  used  in  their  PCS  and  MCS1
speakers.  The  version  in  the  CS2.4  is
improved over the one in the CS2.3.

The  photo  below  shows  a  close-up  of
the  tweeter/mid  driver.  The  center  1"  is
the  tweeter,  with  a  small  black  rubber
surround, then the midrange driver, and
its surround. The crossover between the
midrange  and  tweeter  is  mechanical
rather  than  having  capacitors  and
inductors in the signal path.

The woofer is 8" in diameter, and below
this is a 7 1/2" x 11" passive radiator. All
the drivers use metal cones.

Electrical crossover between the woofer
and tweeter/mid is first order, at 1 kHz.

Summary of Contents for CS2.4

Page 1: ...n a coincident sound for the highs and mids meaning that they are coming from the same spot on the enclosure It is a technology developed in 1997 for the CS2 3s and has also been used in their PCS and MCS1 speakers The version in the CS2 4 is improved over the one in the CS2 3 The photo below shows a close up of the tweeter mid driver The center 1 is the tweeter with a small black rubber surround ...

Page 2: ...e speaker binding posts are of very high quality are extremely heavy and gold plated They are not bi wirable If you notice from the photos the speakers are angled back This aligns the voice coils of the drivers in a vertical plane since the woofer voice coil would otherwise be farther back than the voice coil of the tweeter if the speaker were straight up and down As a result the sound from the tw...

Page 3: ... very tall as if the whole wall were alive almost like listening to my planar speakers However planar speakers sometimes tend to lose a bit of detail because the sound is coming from such a large surface The CS2 4s on the other hand although having a large soundstage still maintained a magnificent amount of detail probably in part because of the coincident tweeter and midrange drivers The bass was...

Page 4: ...g sections here No mushiness or bloated midrange that would be suggestive of high THD I found I needed about 30 watts for the listening level that I like with peaks from 60 watts to about 120 watts as indicated on the McIntosh MC 602 level meters that measure voltage and current to display the watts On the Bench Distortion at 40 Hz and 100 dB microphone was 8 away from respective drivers for disto...

Page 5: ...w The frequency response is quite flat The dips and peaks are somewhat larger than what I get with some smaller speakers because I have to put the microphone farther away I use a distance equal to the distance between the outer edge of the upper driver and the outer edge of the lower driver which in this case includes the passive radiator See how the response fluctuates around the 20 dB line This ...

Page 6: ... soundstage and have marvelous detail They will undoubtedly be one of the great speaker introductions of 2003 At their price I have never heard anything better and many are not nearly as good They are beautifully constructed and pleasing to the eye Recommending the CS2 4s is one of the easiest jobs I have had to date John E Johnson Jr Specifications _ One 1 Metal Tweeter One 3 1 2 Metal Midrange D...

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