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post #1 of 253 Old 12-14-2011, 12:17 PM - Thread Starter
 
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It seems that my Interest in this hobby is not really Passing after all.
So I decided on a new name. This one seems more appropriate.

I got a (nearly) last minute request for a pair of PA speakers for small venues.
Curt Campbell's Stentorians fit the bill pretty nicely.
I had to look it up, but here is what I found--STENTORIAN : extremely loud. I like it already.

I ordered the parts this morning and now I need to hit Home Depot for the plywood. Too bad it's raining.

I hope to get these done in time for Christmas.

Now, on to Home Depot.
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post #2 of 253 Old 12-14-2011, 12:19 PM
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Good luck. I love his Statements that I built.

The Stentorian is a lot of cuttin'

An audiophile likes to talk about how much they spent and how good it sounds.

A DIY'er likes to talk about how little they spent and how good it sounds.

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post #3 of 253 Old 12-14-2011, 12:21 PM - Thread Starter
 
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Quote:
Originally Posted by Jinjuku View Post

The Stentorian is a lot of cuttin'

Uh-oh! Maybe I should have looked at the plans first! Just kidding.
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post #4 of 253 Old 12-14-2011, 12:40 PM
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Quote:
Originally Posted by Jinjuku View Post

Good luck. I love his Statements that I built.

The Stentorian is a lot of cuttin'

Don't worry, this man is no stranger to cuttin' wood.

Btw, Sir Shopfloor, love the new name. Totally fits.
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post #5 of 253 Old 12-14-2011, 01:40 PM - Thread Starter
 
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Quote:
Originally Posted by goku14139268520 View Post

Btw, Sir Shopfloor, love the new name. Totally fits.

Thanks! Glad to see you're still around.
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post #6 of 253 Old 12-14-2011, 02:37 PM - Thread Starter
 
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I barely got started and I'm out of time for today already.
There are some Howitzer parts lurking beneath the workbench. They will get used next Spring if I don't get impatient this Winter.

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post #7 of 253 Old 12-14-2011, 02:50 PM
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funny, i was just surfing around the speakerdesignworks website today and i noticed that design for the first time.

can't wait for some inspiring build pics
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post #8 of 253 Old 12-14-2011, 02:55 PM
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Actually I prefer the nick >>> Fest-tool.....

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post #9 of 253 Old 12-14-2011, 03:06 PM
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Quote:
Originally Posted by Dusty Shopfloor View Post

I barely got started and I'm out of time for today already.
There are some Howitzer parts lurking beneath the workbench. They will get used next Spring if I don't get impatient this Winter.


Forget pics of the speaker. Put up some pics of the shop...

An audiophile likes to talk about how much they spent and how good it sounds.

A DIY'er likes to talk about how little they spent and how good it sounds.

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post #10 of 253 Old 12-14-2011, 03:53 PM
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YES.

PI (sorry, DSF) builds are one of the main reasons I check in here so often...

JSS
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post #11 of 253 Old 12-14-2011, 04:00 PM
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Mr. Dusty, I can't wait to see how these turn out for you.

Oddly enough, I just got back from PE and spoke to them about a flat pack for these and the MTM version. I figure I'll get the parts cut, deliver to PE and let them handle shipping. But that's for another thread.

Looking forward to your finished speakers.
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post #12 of 253 Old 12-14-2011, 04:00 PM - Thread Starter
 
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Thanks guys! If I keep this up, I just might have to buy a shop heater, so Winter doesn't slow me down so much.


Quote:
Originally Posted by maxmercy View Post

YES.

PI (sorry, DSF) builds are one of the main reasons I check in here so often...

JSS

That's awfully kind of you to say so, Max!


Quote:
Originally Posted by Jinjuku View Post

Forget pics of the speaker. Put up some pics of the shop...

All in good time, sir. But, there's really not much to see, since it's just my garage. But, thanks.
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post #13 of 253 Old 12-14-2011, 04:06 PM - Thread Starter
 
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Quote:
Originally Posted by Erich H View Post

Mr. Dusty, I can't wait to see how these turn out for you.

Oddly enough, I just got back from PE and spoke to them about a flat pack for these and the MTM version. I figure I'll get the parts cut, deliver to PE and let them handle shipping. But that's for another thread.

Looking forward to your finished speakers.

Well, with Erich H taking about 95% of the work out of it, I think a whole lot of Stentorians will be built this coming Spring.

Today, the pricing for just the parts (no enclosure) was under $200/pair, making these babies uber-affordable.
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post #14 of 253 Old 12-14-2011, 06:31 PM
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i don't understand how all these frequency responses are the same speaker.

http://speakerdesignworks.com/NS6project_5.html
LL
LL
LL

Listen. It's All Good.
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post #15 of 253 Old 12-14-2011, 06:58 PM
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Quote:
Originally Posted by maxmercy View Post

YES.

PI (sorry, DSF) builds are one of the main reasons I check in here so often...

JSS

I second that MAX! Like I have said, it gives me hope that SOMEDAY I will be able to replicate his awesomeness! I just worry about the name change...that is typically accompanied by a visit to some special doctor...and lots of cash.

A bigger hammer is only better until you hit your thumb with it.
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post #16 of 253 Old 12-14-2011, 07:07 PM
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Ha. I looked at this thread because I thought it was about the original British loudspeaker brand, Stentorian. Oh, well.

Kal Rubinson

"Music in the Round"
Senior Contributing Editor, Stereophile
http://www.stereophile.com/category/music-round

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post #17 of 253 Old 12-15-2011, 03:17 AM
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Quote:
Originally Posted by LTD02 View Post

i don't understand how all these frequency responses are the same speaker.

http://speakerdesignworks.com/NS6project_5.html

My guess is the first two are likely close to the same conditions with the design 'axis' mentioned in the text, and the difference between 1/12 and 1/3 smoothing becomes obvious. The HD graph could have been made under different conditions?

I dunno. But these speakers do represent a pretty good value for the $$ spent.

JSS
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post #18 of 253 Old 12-15-2011, 03:34 AM - Thread Starter
 
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Quote:
Originally Posted by LTD02 View Post

i don't understand how all these frequency responses are the same speaker.

http://speakerdesignworks.com/NS6project_5.html

I believe some of the sweeps were done before the design was finalized.


Quote:
Originally Posted by lacrojx View Post

it gives me hope that SOMEDAY I will be able to replicate his awesomeness!

I have been to the future and I can honestly say that you will soon be cranking out some fine designs.


Quote:
Originally Posted by lacrojx View Post

I just worry about the name change...that is typically accompanied by a visit to some special doctor...and lots of cash.

Haha! Not a chance! I plan on keeping all the original Factory Equipment.

Kal--Sorry to disappoint. Thanks for looking anyway. Have a good day.
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post #19 of 253 Old 12-15-2011, 03:42 AM - Thread Starter
 
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Actually I prefer the nick >>> Fest-tool.....

Fess-up Mike, you know you hope to find a Festool ETS 150/3 under the tree Christmas morning.
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post #20 of 253 Old 12-15-2011, 08:47 AM - Thread Starter
 
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I am building according to Curt's PA Column option.




I need 2 Tops and 2 Bottoms which run the full 15" front-to-back.
Set a stop (red tab on the left.




The cut looks good. The lighting is poor, so I get a lot of yellow. I don't feel like correcting for it.



Next, I need 4 internal shelves. Each mid-woofer pair is in its own sealed chamber. Since these are internal, I need to subtract out 1.5" for the thickness of the front and back (3/4" + 3/4"). Right?

Let's double-check, just to make sure.




Okay, the thickness is 1/16" short of 1.5". So, we'll compensate for that when we set our stop.




Looks good.



I need 4 internal shelves at this setting. So far everything has been 3/4" (approx) plywood. I'll use 1/2" plywood scraps for bracing. I need 4 braces cut at this same setting.
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post #21 of 253 Old 12-15-2011, 08:57 AM - Thread Starter
 
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Since the MTM portion of this cabinet has a little less depth than the rest, I need two braces that are a little bit shorter than the others. I can't use my built-in stop for a 9 1/2" cut, because it is too short. So I just drew a line instead.




4 sides, 2 fronts and 2 backs (rear stack).
2 tops, 2 bottoms and 4 shelves (middle stack).
4 braces and 2 MTM braces (front stack).

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post #22 of 253 Old 12-15-2011, 09:04 AM
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Very nice Dusty! I would really like to hear them once they're finished.

Dumb enough to spend lots of cash on this junk!
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post #23 of 253 Old 12-15-2011, 09:31 AM
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Hello, artist formerly known as PassingInterest!

Thanks for redirecting me from your Howitzer build. As I said over there I am planning to build a pair of these in the Spring. I have the same excuse as you do - I am building these as replacement PA speakers for a small venue (specifically, for the stage of my Church's parish house). I'm thinking about modifying the cabinets based on the design for your Howitzer build but I'll need to do some research first. Depending on how your cabinets look I might just stick with the standard design.

Just wanted to let you know I'll be following along with everyone else.

Chris

"It hurts to admit when you make mistakes - but when they are big enough, the pain only lasts a second."
--Despair, Inc. "Regret"

My AviaTrix TM Build
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post #24 of 253 Old 12-15-2011, 09:54 AM
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(waits patiently for hardcore veneer press pr0n...)
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post #25 of 253 Old 12-15-2011, 10:11 AM - Thread Starter
 
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flyng_fool--You're on, Fly Guy. I'll PM you when they're done, which will be soon, as I've got to deliver them on Christmas Eve.

BeerParty--Chris, I'd really like to see these in a curved cabinet and I really don't think it will be much extra effort.

Quote:
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(waits patiently for hardcore veneer press pr0n...)

Sorry to disappoint, but I'm not going for a fine furniture finish on these, due to time constraints and expected rough handling to and from gigs. So, I won't be veneering these cabinets.
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post #26 of 253 Old 12-15-2011, 10:14 AM - Thread Starter
 
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This is where a cross-cut sled comes in handy, since the 4 sides are too wide to cut on my miter saw.



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post #27 of 253 Old 12-15-2011, 11:21 AM - Thread Starter
 
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I used a 4 1/4" hole saw.




Tip: Mark your holes once and pilot the stack, before using the hole saw on each individual board.




It looks like I've got some feet for a future build.




I took the hole out to the edge, because these braces are centered over the tweeter. It looks like my 3 1/4" hole saw is dull--it produced a lot of burning and had more drag than the larger one.

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post #28 of 253 Old 12-15-2011, 12:15 PM - Thread Starter
 
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Here's a quick, easy way to do conversions, without leaving your shop.



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post #29 of 253 Old 12-15-2011, 12:19 PM
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Quote:
Originally Posted by LTD02 View Post

i don't understand how all these frequency responses are the same speaker.

http://speakerdesignworks.com/NS6project_5.html

It is strange, but Curt says right on the page he had a hard time measuring this speaker. Still funny that most of the anomolies between measurements are in the upper frequencies, where getting a reliable measurement shouldn't be hard.

I'm confused by some of the things said on his write up. He says the speaker is 92 to 94db/2.83V sens, and that 20watts yields 109db. That would take at least 32 watts??? I would think Curt can do math better than that. It's also a 4ohm speaker, so that further adds to 20 watts NOT netting 109db. Hmm.

He also says the sensitivity is approaching pro audio... I'm not so sure. Approaching I suppose, but still a ways off the mark.

Cool design anyways, and cheap too! Look forward to watching the build!
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post #30 of 253 Old 12-15-2011, 02:07 PM - Thread Starter
 
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tuxedocivic--I'm not sure if Curt has had a chance to update his measurements and conclusions yet, but he might if he gets the chance. The price for these makes them worth a try. And if they disappoint, there's always another build ahead, right? Yeah, that's what I'm talking about!

Edit: Okay, I shouldn't have been flippant in my reply. I guess I was tired. The fact is, I am fully confident that these babies will impress, or I wouldn't waste my time building them.
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