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.

Thanks for that. It is a stack but the waveguide still has a round mouth rather than an elliptical or some other shape? I was asking because a few months before having to put the project on hold (which it still is at the moment) I asked a couple of machine shops on this side of the pond about CNCing waveguides with elliptical(ish) mouths into a stack of MDF panels. They raised the need to finish the waveguide surface by hand and I was hoping to get an idea of by how much from this exercise.

This is a round waveguide, with an elliptical profile. Cut into MDF, it will need to be "finished," hand sanding and a bit of lacquer/epoxy sealer to give it the smooth finish you need for paint. Overall, the WG is 8" in diameter, which gives frequency control to around 1200Hz according to the plots we took. With crossover applied, we're getting a 1000Hz LR4 acoustic HP function.

[andy19191]

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

Here's the waveguide profile in question.

http://techtalk.parts-express.com/showpost.php?p=1750881&postcount=224

This all stems from that thread, and this particular one had really easy to work with results.

The baffle would be 1" thick, with a disc on the back for the tweeter to mount to. The WG is 2" deep overall.

Thanks for that. It is a stack but the waveguide still has a round mouth rather than an elliptical or some other shape? I was asking because a few months before having to put the project on hold (which it still is at the moment) I asked a couple of machine shops on this side of the pond about CNCing waveguides with elliptical(ish) mouths into a stack of MDF panels. They raised the need to finish the waveguide surface by hand and I was hoping to get an idea of by how much from this exercise.

[jcpahman77]

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

I currently reside in the Greater Suburbia of the thriving Metropolis of Detroit. My 110 pound German Shepard is well behaved, my shotgun is cleaned and loaded, and my steel IS sharp!:D

As a fellow Michigander this post made me smile. The Army has stuck me in El Paso, TX; which is about as different from Michigan as you can get. If I ever get home I'd love to see your work.

[D, Rose]

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

I currently reside in the Greater Suburbia of the thriving Metropolis of Detroit. My 110 pound German Shepard is well behaved, my shotgun is cleaned and loaded, and my steel IS sharp!:D

[[email protected]]

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

Can you make the cut for my silverflute too?
Where do you live Mr rose?

[Pete Schumacher]

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

I'm very tempted to take a pair. Any chance of knowing if these mate to other tweeters? I just don't want to be stck using the rs28. Definitely seems like a good deal considering you get a baffle out of it.

It would be nice considering the AC offset of the hr08w Pretty far back.

They will more than likely work with a number of different 28mm tweeters. Smaller one's will have a more difficult time. We'll be trying a couple different tweets here shortly, to pair with the Usher 8948A on Ed's baffle.

[ryanbouma]

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

I'm very tempted to take a pair. Any chance of knowing if these mate to other tweeters? I just don't want to be stck using the rs28. Definitely seems like a good deal considering you get a baffle out of it.

It would be nice considering the AC offset of the hr08w Pretty far back.

[Pete Schumacher]

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

Here's the waveguide profile in question.

http://techtalk.parts-express.com/showpost.php?p=1750881&postcount=224

This all stems from that thread, and this particular one had really easy to work with results.

The baffle would be 1" thick, with a disc on the back for the tweeter to mount to. The WG is 2" deep overall.

[andy19191]

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

Give me some feed-back, guys.

I think I might be confused about the type of waveguide to be included in the baffle. Is it round, elliptical,...? How deep? Is the baffle a stack of CNCed MDF or a single piece.

[D, Rose]

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

Questions for those interested. I have a 1" round-over. I could put that around the 10x17 baffles. I also have a 3/8ths round-over. Also, I'll sand down the baffles to 220 grit. Sound good? I'd like to get 4 guys to order before I pick up sheets of 1" plum creek MDF. Give me some feed-back, guys.

[ryanbouma]

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

Just waiting for a proper waveguide. Pete knows the one I want.

So this waveguide... it's a secret?

Another question to add to the list, ship to Canada? Might be expensive. I have a MN address if the difference is big.

[[email protected]]

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

Great minds think alike. I have those exact parts sitting in front of me. Ordered them about a month ago, but haven't built anything yet. Next week hopefully. I'll probably be doing a 2.5 way though. Using the PE HR08W right? Hoping for 90db/w/m. We might be able to bounce ideas off each other.

As for this project. I'd be interested. I have a hard time comparing a $10 WG to a $37.50 WG/baffle. Can you post your results of this profile? And do you have results for any other tweeters, other than just the RS28? Thanks.

I'm sure they will be smooth or he would not bother.

I bought the 8" last November at idiy. Got the sb about the same time. Just waiting for a proper waveguide. Pete knows the one I want.

[andy19191]

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

Can I ask about the roughness of the waveguide surface after machining?

[ryanbouma]

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

Was actually planning on using sb29 with the Silverflute 8".

Great minds think alike. I have those exact parts sitting in front of me. Ordered them about a month ago, but haven't built anything yet. Next week hopefully. I'll probably be doing a 2.5 way though. Using the PE HR08W right? Hoping for 90db/w/m. We might be able to bounce ideas off each other.

As for this project. I'd be interested. I have a hard time comparing a $10 WG to a $37.50 WG/baffle. Can you post your results of this profile? And do you have results for any other tweeters, other than just the RS28? Thanks.

[critofur]

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

It's not that $75 isn't a reasonable price - in fact, it's better than similar projects I've seen where people have offered waveguides in small quantities. I'm just saying, for some of us cheaper will mean affordable, and, we may want a different size baffle.

So, if anyone is willing to make and sell some of these as smaller squares (how wide is the waveguide part exactly again?) for us to integrate into our own baffles that would also be much appreciated.

I guess regardless, I would want to buy one pair of whatever is available soonest as I'd like to test a pair before school starts on the 21st.