Ohm Walsh Micro Talls: who's actually heard 'em?

Mapman...
The amps  are the big Emotiva mono blocks that will put out close to
1kw at 4ohm. The test software is in my iPad mini with a outboard mic.
Let me dig in to my files and see what I have saved.

Later.....🇸🇪

What is the mic?

Also are these series 2 or 3 drivers and new when acquired?

I ask because older drivers could easily not perform as well for a variety of reasons.

Also room acoustics typically provide bass boost versus measuring in something more like an anechoic chamber to whatever extent that might be a factor here.

Also I’ve seen measurements of series 2 Walsh speakers from teh 80’s and curves were reasonably flat with typical deviations. Of course that was entire speaker and no way to know how one set of test gear and conditions compare to another.

I would not listen to the Walsh speakers without the tweeter. Listening from behind with no tweeter exposure confirms that.

I would expect the bass driver to roll off as frequency goes up to some significant extent.

if original response with tweeter was reasonable flat as it should be that would indicate the tweeter and crossover together with the bass driver provides that. No surprise there.

No commercially sold Walsh or Walsh style driver I know of can cover everything and operate reliably over time. Dale Harders newer models are the most recent attempt I know of. Original OHM Fs did it to 16khz or so when working but that was very tenuous.

I would only judge the sound and performance as measured of the complete package, not the parts. In a project like yours however its of course important to know what each part is doing.

Interesting stuff.

Bondman,

I’ve never heard OHM Fs. How did what you heard compare to what you get at home?

peter I’m no expert in crossovers by any stretch but based on your chart of the OHm Walsh bass driver alone, it would seem that the crossover JS uses provides a very gradual transition over an extended frequency range in order to deliver a typical reasonably flat response in the end.

I’m curious if you change the crossover how would you accomplish that and with what end goal in mind?

Of course with a different tweeter its a somewhat different ballgame as well.

I wish I could find the old measurements of older OHM Walsh speakers I had seen a while back but it appears the site’s publisher retired and the site is no longer available. It is referenced at the end of the Wikipedia article on Lincoln Walsh still.

One thing I find interesting too, is that I keep hearing that the CLS tweeter/super tweeter supposedly comes in around 5-7 khz depending on what one reads. Is this really true or just here-say? I often wonder how the large main drive of the CLS could fill that frequency gap in enough to sound right. Just one of those things that makes me wonder. Again, the Ohms sound good, so who am I to question?