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RALPH MORRIS' SYSTEM

Ralph morris' system

HOME
UP
D130E
ROBERT HAMEL'S SYSTEM
TOM LOIZEAUX'S MONITOR'S
RALPH MORRIS' SYSTEM
KEN P'S 4345's
DAVE PLATEK'S SYSTEM
SOUND AND COMM. INC.

 

 


Ralph Morris' Home Theatre System
 

 

Ralph Morris is a former Director of Marketing for Tycobrahe Sound, one of the pioneering tour sound companies. His recollections of his involvement in the professional market can be found here.


Above is a photo of my new home entertainment system. My digital camera isn't very wide-angle, so I could only get one side of the system  in the frame!

The Tycobrahe M-2 speakers consist of JBL studio monitor components  mounted in custom enclosures of my own design. The 2215 low-frequency transducer operates in a bass-reflex enclosure of 13-cubic feet internal volume, with the port area equal to the effective piston area of the transducer. This provides optimum rear loading, and results in the enclosure having a tuned frequency at 50 Hz. The bi-amp system has a 2420 driver with 2391 horn and acoustic lens, plus a 2405H (slotted) tweeter. The enclosures stand six feet tall, and measure 22-1/2 inches wide by 20 inches deep.

Power for the 15-inch transducer is provided by a Phase-Linear 400, and a Dynaco ST-120 powers the mid-range driver and tweeter. A home-made 12 dB/octave passive crossover with an adjustable L-pad is used to cross over the mid-range driver and tweeter at 10 KHz.

The line-level crossover is also home-made, and provides 12 dB/octave slopes at 900 Hz. The front end is a Dynaco PAT-5 preamplifier and Dynaco FM-5 tuner, plus a Dynaco SE-10 graphic equalizer.

The sound is just about as close as it gets to live. As a retired concert sound engineer, I like to be able to turn it up and still hear what I call "the quiet between the notes."

© 2003 Ralph Morris