"I haven't listened to the Dayton woofers, they may really sound good. Maybe their distortion levels are very low."

What type of distortion are you describing? If it is displacement generated then I would counter by saying that I have two 97 dB/w/m 15 inch woofers wired in parallel and even at loud volumes the motions are so small they are not visible. Where would distortion be generated?

I believe that these Dayton drivers are made by Eminence, but I might be wrong, which indicates quality to me. When I compared the Dayton's T/S parameters, and the physical description, I was convinced they were identical at that level to the JBL 2226. You have worked with many drivers so I am looking for an opinion on where I can improve, I have only worked with these Daytons. What would I be missing that might make them behave differently then the JBL drivers below 200 Hz?

Martin

It is completely different, but also the same...
still wavelengths to contend with, no BSC is a big bonus but plenty of baffle issues to think about.

A lot of musical instruments are dipole radiators especially kick drums!

How would you model a man with a tape recorder up his nose?

Regards Philip

"still wavelengths to contend with, no BSC is a big bonus but plenty of baffle issues to think about."

OK, couple of questions. What waveguides are you referring to and what are the baffle issues?

"A lot of musical instruments are dipole radiators especially kick drums!"

Good observation, I had not thought of that before.

"How would you model a man with a tape recorder up his nose?"

Not sure what this means, why would I want ot model a man with a tape recorder up his nose?

Martin

Martin

I've heard good drivers without shorting rings, but all the speakers that sound really great to me have this technology. At moderate power levels, I can tell 'em right away, as soon as I hit the door when one is playing. It's that apparent to me.

You must think I'm mad. It was a very bad joke. We are very familiar with British TV in Australia.

I was talking about the Monty Python sketch. (from memory) And now for something completely different ...a man with a tape recorder up his nose, (then a man with a tape recorder up someone elses nose and finally in stereo)
I was wondering how it might really sound. If you were really keen it could be modelled. You have the (nasal) cavity then the nasopharynx leading to the throat perhaps it would work like a BLH. It's not very funny at all..

When I read your post, I was thinking about wavelengths in relation to the dimensions of the (open) baffle. Dips and nulls can be predicted at wavelength multiples. Its funny how something so different to a ML TL or a ML TQWT can be also the same. Optimising the dimensions according to wavelengths involved. it's all a bit deep and meaningful really...

I have played with a few open baffles with a variety of speakers although my wife thought they were too big. I love the "articulation" of the fundamental frequencies.

Regards Philip