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Hear All-New Radiation Pattern in Utah 30 mins NE of Zu Audio, Kimber Kable

98.202.24.92

Posted on September 6, 2014 at 14:14:43
James Romeyn
Industry Professional

Posts: 126
Location: Cache Valley, UT
Joined: November 24, 2000
During any LCS audition we shall, upon your signal, turn off the LCS speakers to allow immediate A-B comparison, mono pole vs. LCS. After this test, check how anxious are you to return to mono pole, bipole, or dipole loudspeaker radiation pattern.

LCS Late Ceiling Splash reverberant field features the following desired qualities described by Drs. Floyd Toole and Earl Geddes:
1. Full range
2. High output relative to on-axis signal
3. Delayed 10ms-20ms relative to on-axis signal
4. Highly decorrelated from on-axis signal

No other radiation pattern provides LCS' unique magnitude and combination of the above qualities, especially #4. All ye who were underwhelmed with Constant Beamwidth, come hither! Welcome, ye who love omnipole except for its bloated image size and large front wall spacing.

Loudspeaker systems described below available for sales and audition in beautiful Cache Valley, Utah, 75 minutes NE of Salt Lake City, 30 minutes NE of Zu Audio and Kimber Kable. Speakers designed by Duke LeJeune of AudioKinesis. 25.5 x 15.5 x 8 room. Excellent, dispersive acoustics w/light treatment. Worth the time and effort. Age 60 retired SFFD Captain and lifetime audio/music industry professional.

Hear now:

$4900/pr Zephrin 46 one-box with LCS Late Ceiling Splash radiation pattern. Two separate full range systems per channel, each 16 Ohm and low 90 dB range. Drive each speaker channel with one amplifier channel (two 16 Ohm loads = 8 Ohm parallel or 32 Ohm series) OR two amplifier channels per speaker channel (each channel drives 16 Ohm load). Flat impedance curves above the bass range. 11W 300B tube amp never clipped at 2014 Newport THE Show. A 3-D dream come true for OTL lovers. See links at the end of THIS THREAD for comments (including pro reviewers) at 2014 Newport THE Show.

$5800/pr Jazz Module 2.0 quasi-bipole rear-firing waveguide-loaded compression driver. Solid wood baffle has rounded corners. $4800/pr for MDF baffle with square corners. JM 2.0 is front half/main speaker of Dream Maker LCS described below.

$2990/5-piece DEBRA Distributed Bass Reflex Array, cabinet design and materials by James Romeyn.

A Highly Refined Speaker-To-Line Level Attenuator: circuit by Jack Elliano of Electra Print Transformer fame. The answer for systems lacking unused preamp outputs to drive auxiliary amplifier + LCS speakers described below. Topmost grade employs eight Vishay S102 resistors. Price varies per wire, chassis, connectors, and resistors.

ETA early October:

$8700/4-box Dream Maker LCS system comprising Jazz Module 2.0 described above + separate LCS 2.0 loudspeakers. Subtract $1k for square baffle. A much improved version of 2008 TAS Golden Ear Award Winner (Professor Robert E. Greene).

$2900/pr LCS 2.0 Late Ceiling Splash loudspeakers. Upgrade any pre-existing loudspeaker including dipole/bipole to our Late Ceiling Splash radiation pattern with these two 92 dB LCS loudspeakers + power amp/level control. Enjoy the luxury of LCS reverberant field! Especially good for stand mount speakers because of low 30 Hz bass cutoff + 3-D Bass Mode Damping feature explained below.

Frosting on the LCS cake: two LCS + two "Main Speakers" comprise four separate bass systems. Because each bass system occupies a unique geographic space, users invert the speaker wire polarity of either the L or R LCS speaker (never both), whichever channel better damps bass modes.

Because LCS output delays at least 10ms vs. on-axis signal, inverting the polarity of one LCS channel has no effect above the bass range. This feature provides a portion of the natural 3-dimensional bass mode damping associated with Distributed Sub Array. (Side note for attendees at 2013 RMAF who sampled Dream Maker LCS: we did not confirm this bass mode damping feature till after that show.)

All speakers standard oak, maple, walnut real wood veneer. Custom paint finishes for extra cost.

James Romeyn

 

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