DIY Waveguide loudspeaker kit

[pooge]

Maybe Waveguide Mode Absorber for short.

[gedlee]

Originally posted by pooge
Maybe Waveguide Mode Absorber for short.

I like it. I'll use that - WMA for short! Could almost just drop the Waveguide and call it a Mode Absorber. The waveguide part is obvious from the application.

[peufeu]

Your patentese describes the thing very well. I wonder what title Microshaft used in their double click patent ?

You should use a name that has audiophile appeal... However if it includes the words "clarifier" or "purifier" I will personnally come spank you

Standing Mode Absorber ?

[gedlee]

Originally posted by peufeu
However if it includes the words "clarifier" or "purifier" I will personnally come spank you

If you are a French woman - please do! Probably not, but its worth a try

[gedlee]

I may be able to offer the kits with two different sets of drivers, B&C and Eminence. The B&C are clearly the better, but the Eminence would allow me to drop the price by maybe $100. Any point in doing this? $600 vs. $500 - I'd pay the differential, what about others?

The kit thing is going well and I'll have pictures by next week.

People who only buy the baffle - will you want the edges routed? There is a potential problem with that and that is that the baffle is 3/4" thick but the corner round is 1" so there is 1/4" left on the cabinet sides.

[Patrick Bateman]

Wouldn't the design of a 2nd crossover be a total time killer?

[gedlee]

Originally posted by Patrick Bateman
Wouldn't the design of a 2nd crossover be a total time killer?

The computer time isn't a big problem, its the setup time to do the polars thats a pain. I'm already setup for that and Eminence gave me the drivers to try so its only about 1/2 day to swap drivers, and measure. I will probably do the design anyways, but I wouldn't "tweak" it in to the last 1/2 dB if there is no interest. Who knows, the Eminence could work better I guess. The B&C woofer is not ideal - but what is?

I've got some down time right now waiting for the gloss coat to dry on the molds (this has to be very hard in order to polish it). Then polish and pull some parts. If that goes well then I am ready to ship. First parts run is basically sold - unless I do a lot.

[peufeu]

If you are a French woman

Ah, you got one right out of two

If changing the drivers halved the price, well, it would be worth it, but going from 600 to 500 and get worse sound ? No, thanks, I'd rather pay $600 and get the "director's cut" instead of the PG-13 version lol. Now, if the Eminence woofer is better...

[gedlee]

Originally posted by peufeu


Ah, you got one right out of two

If changing the drivers halved the price, well, it would be worth it, but going from 600 to 500 and get worse sound ? No, thanks, I'd rather pay $600 and get the "director's cut" instead of the PG-13 version lol. Now, if the Eminence woofer is better...

Problem is that I can't mix the driver suppliers. The business model doesn't work like that.

[publius]

Originally posted by pooge

Try here:
Waveguide plug

Still don't like the title, Earl.

Thanks for the link Pooge.

Interesting read gedlee.

I'm in the market for something like your kit and haven't found much other than the 4Pi. I was even considering something like the JBL PRX pro-series, but I'd prefer more bass extension (something like down to 35-40 hz, where I can cross to a high-mass, high-power subwoofer).

I was thinking about a DIY system with Beyma 15LX60 and CP380M (with either the TD250 horn or, more likely, the DDS ENG 1-90), but then I'd have to go active because I don't have passive crossover design skills. A kit would make life easier.

I look forward to learning more about it.

If I may, one problem that I see is that the high end will need to compensate for when the speakers are run without the foam. Over time, the foam may go bad or may be lost, and the buyer will be left with a speaker that is too bright. Will the crossover have a way to adjust for running without the foam?