Next Project: Arc 40 CBT Array

[Kevin K.]

Ok Roman, I understand your position a little better now. I agree with you, it doesn't seem like there are a lot of original designs on the forum now days, not sure why. So far, I haven't built any kits or anyone else's design for myself. It's not that I don't appreciate all of the designs and the designer's works, it's just in my nature to create things on my own. Some would view that as a mistake, perhaps, perhaps not. To me, it really all depends on why you are doing this in the first place. I enjoy this hobby for the creativity it allows me and it gives me an avenue to stay in practice on the CAD work which I also enjoy very much. I am learning "the basics" of audio design a little bit at a time, maybe not fast enough to suit some, but fast enough to suit me. I do appreciate your input.

[JavadS]

Why would it? Let me explain my position. Majority of the builds on this forum now days are either commercial kits or somebody else's designs. Considering your woodworking capabilities, I think you should have dived in to the design stage yourself and arrive to the conclusions, you yourself are happy with. And knowledgeable members, like Rick could steer you along the way. With use of DSP, changes in the x-over can be implemented instantly without additional investment in parts. This would be an interesting and challenging process.

I'll butt in where I shouldn't, but it's interesting how you have such strong expectations and opinions of what both Rick and Kevin should do. Why don't you give Kevin some space to share more about the project as it develops and I'm sure everyone will be happy with what comes about, there is no need to put such strong expectations or entitlement about someone else's project IMO. Javad

[r-carpenter]

Hopefully, my opinions about your opinions don't drive a wedge between us, it is not my intention.

Take care,
Kevin

Why would it?
Let me explain my position. Majority of the builds on this forum now days are either commercial kits or somebody else's designs. Considering your woodworking capabilities, I think you should have dived in to the design stage yourself and arrive to the conclusions, you yourself are happy with. And knowledgeable members, like Rick could steer you along the way. With use of DSP, changes in the x-over can be implemented instantly without additional investment in parts. This would be an interesting and challenging process.

[r-carpenter]

Due to the small sample number for most listeners I think forming an overall opinion on CBT's is difficult. One of the reasons for this project is to show what the format is really capable of with drivers that are neither ultra cheap or uber expensive. I'm sure in the process plenty of information will be shared that many will find beneficial and Kevin will have learned quite a bit as well.

It is not my opinion. I have not heard CBTs myself and only commented on other people's impressions.
Looking forward to the information your willing to share.

[rickcraig]

Sounds to me Rick that basically you are saying: I don't have to share anything (not an obligation) and if you want my knowledge, you got to pay. Fair enough.

Now, here's what I would have liked to see from this build.
Line arrays are fairly difficult to build. Good sounding line arrays, anyway. CBTs have had so-so response from many listeners already. So, to me, looking at the unfiltered response, logistics behind filter development and subjective impressions of the listener (Kevin) would be a useful and beneficial info. I am sure, not only to me but to may DIYers who contemplated building one of these. What is Kevin going to learn from the build? He already knows how to 3D model and CNC.
Well, I'll b.utt out. Have a good time.

Wrong assumption - I share things quite often without asking for anything in return. It is my full-time business though so I cannot give out everything for free. True, good sounding arrays are not easy to build. It takes a great deal of time and investing in parts and equipment. I've built more arrays than most so I have a pretty good idea how CBT designs compare to everything else. Due to the small sample number for most listeners I think forming an overall opinion on CBT's is difficult. One of the reasons for this project is to show what the format is really capable of with drivers that are neither ultra cheap or uber expensive. I'm sure in the process plenty of information will be shared that many will find beneficial and Kevin will have learned quite a bit as well.

[Kevin K.]

Sounds to me Rick that basically you are saying: I don't have to share anything (not an obligation) and if you want my knowledge, you got to pay. Fair enough.

Now, here's what I would have liked to see from this build.
Line arrays are fairly difficult to build. Good sounding line arrays, anyway. CBTs have had so-so response from many listeners already. So, to me, looking at the unfiltered response, logistics behind filter development and subjective impressions of the listener (Kevin) would be a useful and beneficial info. I am sure, not only to me but to may DIYers who contemplated building one of these. What is Kevin going to learn from the build? He already knows how to 3D model and CNC.
Well, I'll b.utt out. Have a good time.

Roman,

Not sure why you have chosen to take issue with this build thread. I've seen numerous threads on the forum where "the how's or why's" of many designs are never disclosed.

I respect your opinions but can't say I agree with everything you've said. Your first statement about Rick is totally out of line IMHO, and if it was true, then Rick would be charging me for his help on this build and that is not the case. Then you questioned what I will learn from it. There is well over a thousand miles in between Rick and myself and he will have to instruct me on a lot of the things to do with these to complete them. If I walk away from this build not knowing any more than I do right now, I need to get out of this hobby all together. Will I be able to design and build one myself next time, probably not. And that is fine with me, really. My only goal with each new build is to learn just a little more then I knew before, it doesn't have to be an "All or Nothing" adventure.

Rick and I have talked briefly about the details of this build and I believe Rick will probably share enough information about this build for someone else to duplicate if they so desired. As for the "how's or why's" of the details, that's the part I suspect Rick will prefer to keep to himself as do many designers on these type of forums, especially the ones who make their living from Audio.

Hopefully, my opinions about your opinions don't drive a wedge between us, it is not my intention.

Take care,
Kevin

[r-carpenter]

Sounds to me Rick that basically you are saying: I don't have to share anything (not an obligation) and if you want my knowledge, you got to pay. Fair enough.

Now, here's what I would have liked to see from this build.
Line arrays are fairly difficult to build. Good sounding line arrays, anyway. CBTs have had so-so response from many listeners already. So, to me, looking at the unfiltered response, logistics behind filter development and subjective impressions of the listener (Kevin) would be a useful and beneficial info. I am sure, not only to me but to may DIYers who contemplated building one of these. What is Kevin going to learn from the build? He already knows how to 3D model and CNC.
Well, I'll b.utt out. Have a good time.

[rickcraig]

Considering, the main porpoise of the forum is the learning and information share, I don't find this approach too awfully beneficial. But to each, his own, I guess.
Curious tho, have you listened to many other large format arrays and if so, what tilted the decision towards curved arrays?

Roman,

I appreciate your opinion and have taken time to think out a honest response. Yes, the forum is geared towards sharing information and helping other builders learn; however, I don't think that anyone should feel obligated to give out free advice (that includes hobbyists or those in the audio business like myself). I would post more but simply don't have the time and there are many others who are fully qualified to answer the majority of questions here.

When I started out as a DIY I first built a kit and then started experimenting with my own designs. Once the forums became available (Madisound primarily) it was much easier to share information and get input but I never expected help just because someone more experienced than I was posting. In the process of building different designs I made many mistakes but learning from them was a valuable experience.

[Kevin K.]

WIMP !

These were all cut by hand.

http://techtalk.parts-express.com/fo...clones-sort-of

Nice!! Have you started treatments for carpal tunnel yet?

Ever get around to applying the shading on the arrays?

[rhubarb9999]

Thanks guys.

If I had to cut all of these holes in the baffles with a hand router, that might change from love to hate real fast. It still seemed like it took forever even on the CNC. Can't imagine doing it by hand but know it can be. There are lots of shops where this kind of work could be sub'd out and the pricing gets more and more reasonable all the time.

Take care,
Kevin

WIMP !

These were all cut by hand.

http://techtalk.parts-express.com/forum/speaker-project-gallery/57363-cbt36-clones-sort-of

[Kevin K.]

Will do Rick!

[rickcraig]

You caught me off guard here - I was thinking of a segmented panel. If you can make it work with all of the drivers properly seated I'll be impressed! Use the DATS rub and buzz test to make sure each driver is working as it should once all are installed.

[Kevin K.]

Here is that picture promised. It's hard to get a good shot. Looks worse than it is because I set the openings up to allow for primer and paint build up. It really is minimal, like less than a "post it" thickness.

Also mounted these in a flat baffle and can say I'm not a fan of three hole mounts, they don't seem to apply the pressure evenly.

[careyink]

That's awesome and subscribed...

[mzisserson]

Goodonya' following!