Ohm Walsh F Hope of Resurrection

... er, that is, reviewing. 

Douglas, certainly you cannot compare your F's to the original F's, as none exist as a new F anymore. No one can be sure of its sound once the putty dries out, or the foam in the cone falls apart, as compared to a just-manufactured F speaker.

There are other ways to check, such waveform output. The F has the ability to output a "reasonable facsimile" of a square wave as one reviewer put it, and as shown in the Ohm literature. If one is able to restore the cone to like-new, it should be able to output this kind of waveform, to validate the restoration. If a speaker could pass this test, that would demonstrate phase accuracy over a wide range of frequencies.  

Since you hear a sound that you find not to your liking, like the treble response you noted, you took some of the foam out of the enclosure, and said that helped ("The rebuild was successful in the end mostly because of my foam removal. The driver was terribly constrained until I half emptied the cabinet to let the driver work more freely.") That action changed the system Q, and could reduce the damping to the driver in the bass frequencies, perhaps increase ripple in the frequency response.  

But as you said in the latter part of your posts, as long as it sounds good enough for you, you really don't care if the fixes approached the original F sound or not. I thought you wanted to preserve the F sound to as close to original as practicable. My comments were directed to assist in that direction. Sorry if I misunderstood your intent.

The HHR speakers use the platforms of the Ohm A and F designs, and take them farther that could be done in a commercial setting. I think Dale sells his speakers on a build-on-order basis. If I get the opportunity, I'd like to hear his speakers, as I've heard the first Ohm A's and later owned F's.

I was reading on another thread here - possibly even this one - that Bill Legall only does one pair per year and he's not happy about that because it's so labor intensive and time consuming. I have great respect for what John Strohbeen has done to keep the company going and remain viable, but the omf upgrade he offers is really just putting a new generation driver on the old cabinet, and requires you to send in your old Ohm F drivers. Speaker exchange in Tampa Florida still rebuilds them. I think they still sell the spiders in the foam but they no longer sell the voice coils. Properly rebuilt, they are a superb speaker. Yes there are modern speakers that are far more sensitive and have characteristics that are very desirable, but there's nothing quite like the F. Bill did the rebuild on mine for the previous owner. He was a guy who jumped around from one speaker to another, and I was lucky enough to snag them at a very good price. I actually had a guy here in Raleigh come and hang out this afternoon to listen to mine, because he has a pair of high-end monitor speakers that have phenomenal presents and imaging but the sweet spot is so small that if you move your head a few inches to either side, you lose significant amounts of sound. I don't think he has made a decision yet, but I think for his purposes the new model 2000 is probably a good fit.

Ohm F is the product of creativity.
CLS is the product of engineering.

One works in a fantasy world; the other in the real world.

The active board forum is a very useful and beneficial forum regarding education and technology.  Best Smart Tv Box And Dongles Online