Anyone interested in a 10 x 17 baffle with W.G.

[Pete Schumacher]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Wow! That is an object of desire you got there Pete! Have we done any measurements?

Thanks,

Dan

We did response and distortion testing at the beginning to develop a starting point crossover for voicing. The waveguide measurements for the RS28F are shown on the thread started by DanP, where this particular waveguide shape was investigated. It worked so well with the RS28F we had on hand that made us shift gears on a build and figure out a way to incorporate it.

The distortion plots we took of one crossover version showed amplifier-like distortion levels at greater than 90dB output, across the band. From there, its been subtle changes to some part values. No measurements since, only listening, and modeling to see what part value changes will do to certain bands. I think we're done at this point. I'm looking forward to hear what the guys in Chicago like and don't like about the sound. I'm sure they'll be stunned by the look of the paint job Ed's putting on these.

All the baffles he'll be making in reference to this thread, will use the same WG profile as shown in the picture. We worked out a few bugs in the original method, and as you can see, the results are the beautiful consistency you see pictured.

[dantheman]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Wow! That is an object of desire you got there Pete! Have we done any measurements?

Thanks,

Dan

[Pete Schumacher]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Hey guys. Ed's had a lot on his card recently. But I think he'll be ready soon. He reworked his setup to cut the baffles, and here's the latest result. I think he's ready to put his name on them now. I also believe he's bringing a few baffles to the Chicago DIY this weekend.

[TN Allen]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Can I get one of either the plastic or wood waveguides, either buy or borrow? I want to experiment with making a mold and this looks like the best combination of not too big/performance... Perhaps concrete will be the cheapest way to make these...

I can send one of the waveguides I turned, or turn another if you have a preferred arc and opening for the cross section. I don't have MDF, but have Advantech, which is somewhat porous but could be used to form a mold. I also have Baltic Birch blanks glued up, solid wood is also an option.

These could be temporarily mount in a cabinet, or glued permanently.

Would you be evaluating these as well?

tna


tna

[[email protected]]

Re: Anyone interested in a 10 x 17 baffle with W.G.

yes, where are we? are you able to make one full lenth? i want it for a tower. thirtysix or so inches tall.

[aarond]

Re: Anyone interested in a 10 x 17 baffle with W.G.

D, Rose,
Any update on your progress?

[critofur]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Can I get one of either the plastic or wood waveguides, either buy or borrow? I want to experiment with making a mold and this looks like the best combination of not too big/performance... Perhaps concrete will be the cheapest way to make these...

[[email protected]]

Re: Anyone interested in a 10 x 17 baffle with W.G.

That locks really nice.

[Pete Schumacher]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Sorry. I thought it was the somewhat oval. Shape that Pete liked so much.

The throat and opening are round, but the cross section is elliptical. This is the response of that WG with the RS28F mounted to the back with the flange. Absolutely gorgeous with only a tiny wiggle in the response above 10KHz.

I'd love to see an elliptical version of this, but DanP was only able to make a few versions. This profile proved to be the best for the rear mounted tweeter w/flange. The others might also do very well if the flange is removed and the dome pushed into the WG. That testing hasn't taken place yet.

.

[[email protected]]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Sorry. I thought it was the somewhat oval. Shape that Pete liked so much.

[greywarden]

Re: Anyone interested in a 10 x 17 baffle with W.G.

I'm thinking a 3.1 setup with MTMs would be pretty sweet.

[aarond]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Arlis,
I believe the "elliptical" part of the design is the profile/cross section of the waveguide not the shape of the profile as if you were looking at it from the front. I believe the profile you are referring to is an oblate spheroid.

Maybe someone else can confirm and give a quick explanation of the merits of each (which I cannot).

[[email protected]]

Re: Anyone interested in a 10 x 17 baffle with W.G.

i thought you were doing the elliptical?

[ryanbouma]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Yes, very nice.

Again I'd like to say good on you guys for pursuing some waveguide options. If you continue to make these, I'm sure I'll be a customer eventually ;) Wish I coulda grabbed a pair this go around.

[djg]

Re: Anyone interested in a 10 x 17 baffle with W.G.

Nice.