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Walsh 300 Mk-2, SMR Guide to Home Theatre, John R. Potis

Tuesday, May 1, 2001 Walsh 300 MK-2
Publisher: SMR Guide to Home Theatre | Author: John R. Potis

“To thine ‘Ohm’ self be true “…The first pair of ‘High End’ speakers I ever owned were a pair of Ohm Walsh 4s. While my fickle audiophile nature had me selling them some years ago, the fact is they went to my Father-in-law and I still get to enjoy them on a regular basis. So, when I was surfing and came upon Ohm Acoustics’ web site [www.OhmSpeakers.com], a huge light bulb went off in my head. What had the makers of one of my more fondly remembered speakers been doing all these subsequent years? We had to go after a pair. By the way, Ohm Acoustics doesn’t sell through a dealer network anymore so it was the only way for me to get to hear them. They are sold only factory direct.

“The Ohm Walsh 300 Mk 2s are designed around the ‘Walsh’ driver developed by the late Lincoln Walsh. Years of refinement have created what Ohm calls the ‘CLS’ (Coherent Line Source) driver. Where typical cone drivers propagate sound in one direction because their backs fire into a box, the CLS driver faces down into a cabinet from the top. Sound is propagated from the back of the driver rather than the usual front. As the driver is ‘cone’ in shape, and it faces the floor, it propagates sound in an omnidirectional pattern, which is to say that it radiates in 360 degrees (visit their website to read in detail about the theory involved, it’s too much to go into here). In addition to the CLS driver, there is a one inch ‘super tweeter’ mounted at the driver’s top and angled inward so as to cross axis well in front of the listener. This tweeter is reportedly in full operation by 8 to 10 kHz. The CLS driver does most of the work, from the bass up through the critical midrange (avoiding crossovers and their potential deleterious effects on driver blending) on up through the upper midrange / low treble.”