Sony buyout project

[r-carpenter]

Re: Sony buyout project

So its going to look something like this?

http://www.parts-express.com/pe/show...umber=264-1028

Yep.
Not going to affect the sound too much so if you want to get your DX25 and just router them in, it's fine. Just increase the width of the front panel by 1/4". Sides are 5.5 including thickness of the front baffle.

Vifa front plate mounting screws are M3 0.5
I got a few longer screw in Lowe's today.

[r-carpenter]

Re: Sony buyout project

some German humor to go. :D

http://www.youtube.com/watch?v=CNi9b9SsWJg

http://www.youtube.com/watch?v=pmxP8jb4DtE&featur

http://www.youtube.com/watch?v=Se_l_kUAPuc&feature

http://www.youtube.com/watch?v=ydSVVyLVO6A&feature

http://www.youtube.com/watch?v=BD3Ru2Xe3v0&feature

http://www.youtube.com/watch?v=gdW1-929JzU&feature

https://www.youtube.com/watch?v=fN8OLsVAn9w&feature

[Soundslike]

Re: Sony buyout project

I've looked through the string and can't find the distance between the two groups of six drivers. Sorry if I missed it, but I thought I'd better ask for clarification. For sake of clarity, lets number the drivers from top to bottom, not including the tweeter. According to my calculations/guestimate the center to center distance between six and seven, is 8". I'm referring to the space where the tweeter is to be mounted. Is that correct?

Not going to affect the sound too much so if you want to get your DX25 and just router them in, it's fine. Just increase the width of the front panel by 1/4". Sides are 5.5 including thickness of the front baffle.

Are you saying the two groups could be spread apart, by 1/4" (top and bottom for a total of 1/2") to make room for the DX25 faceplate? Does the 5.5" refer to the side wings that form the U?

If you don't mind, I could submit a drawing for your design showing these dimensions.

I apologize for all the questions -- hope it's not too early to ask. By the way; I'm with Johnny -- this is the most interesting thread going. Thanks for the great project and thread...

Ron

[XtremeRevolution]

Re: Sony buyout project

Yep.
Not going to affect the sound too much so if you want to get your DX25 and just router them in, it's fine. Just increase the width of the front panel by 1/4". Sides are 5.5 including thickness of the front baffle.

Vifa front plate mounting screws are M3 0.5
I got a few longer screw in Lowe's today.

Couldn't I just make the whole array a bit taller to fit the tweeters into the center? Where on the baffle exactly are these going to be placed?

Somewhere, I'm not understanding where the fitment issue is. Its probably something obvious or simple. :(

[XtremeRevolution]

Re: Sony buyout project

I've looked through the string and can't find the distance between the two groups of six drivers. Sorry if I missed it, but I thought I'd better ask for clarification. For sake of clarity, lets number the drivers from top to bottom, not including the tweeter. According to my calculations/guestimate the center to center distance between six and seven, is 8". I'm referring to the space where the tweeter is to be mounted. Is that correct?



Are you saying the two groups could be spread apart, by 1/4" (top and bottom for a total of 1/2") to make room for the DX25 faceplate? Does the 5.5" refer to the side wings that form the U?

If you don't mind, I could submit a drawing for your design showing these dimensions.

I apologize for all the questions -- hope it's not too early to ask. By the way; I'm with Johnny -- this is the most interesting thread going. Thanks for the great project and thread...

Ron

I would love to see a drawing. I'm having a bit of a hard time visualizing this whole thing.

[r-carpenter]

Re: Sony buyout project

let me clarify a few things.
The speaker is 73" tall. That's not including the base.
It's 10" wide and 5.5" deep. These are exterior dimensions.
Tweeter is located at 36.5" high from the base and 2.5 (center) from the edge of the front panel. I am going to post some more pictures.
I was trying to say that if you don't want to bother with waveguide, you could either spread two groups of woofers by an additional 1/4" or make the front panel wider.
Let me go step by step here.

[r-carpenter]

Re: Sony buyout project

This is the first step to making a waveguide and mounting the tweeter.
I'll check on CTC of the woofer groups tomorrow but the issue was that with a large faceplate of DX25 it would either overlap in to the woofers round-overs or the edge of the faceplate would line up with the outer edge of the panel.

I don't mind at all if you guys make the drawing.
2.5" is the distance from the edge to the center of the tweeter hole.

[r-carpenter]

Re: Sony buyout project

I was about to cut the waveguide roundover and then realized that the bearing is going to be in the air. This a 1.5" radius router bit and 1" panel.
So, I screwed an additional 3/4" panel on the back and drilled it through using existing hole as a pilot.

[r-carpenter]

Re: Sony buyout project

I also realized that I better pre-drill tweeter mounting holes. Original faceplate was used for drilling. 1/8" through hole and 1/4" counter-bore later.

[r-carpenter]

Re: Sony buyout project

waveguide is cut. I did it with the 5hp shaper in one pass. If you are using router, suggestion is to do it in a few passes.

[r-carpenter]

Re: Sony buyout project

counter bored holes for the mounting screws. I kinda spaced out and did it after the waveguide was cut. I own a large enough drill press and could line up the speaker. If you don't have a big drill press, easier to do it while the surface is square.

[r-carpenter]

Re: Sony buyout project

unpainted.

[r-carpenter]

Re: Sony buyout project

As far as the painting and finishing goes, that's about it. I'll use black grill cloth sold by PE.

That's it for today. I am ready for questions.

[bkeane1259]

Re: Sony buyout project

Nobody knocks out a set of speakers like Roman!! You painted those in 5 minutes flat :eek:

Seriously though...very nice. Thanks for sharing all the steps.

[ROTECH]

Re: Sony buyout project

Roman,
Or anybody else who can learn me about line arrays..I see that the tweeter is at ~36'' from the base, this would be the average height for seated listening. How would this tweeter location contribute to us physically moving around the listening area? What are the listening characteristics on-off-above-below for a line array such as this? I know this is a budget build, and I know some arrays use 72 tweeters for example....how would they differ for the above mentioned reasons?