Cornscala/Bob Crites/Style C

[hifisucks]

Hi, just finished these great speakers. I suggest them to anyone who seriously listens to music...either loud or quiet... with a few watts they serve for unleashed enjoyment!

 

[DrDyna]

Did you get any construction pics or anything? We like gear porn!

 

[hifisucks]

I put pics to the thread start... either they are in progress or went down the drain...
here

 

[hifisucks]

here

 

[hifisucks]

and here

 

[DrDyna]

Bonus points for Carl Sagan Looks like solid wood, pretty cool.

 

[hifisucks]

3 more

 

[hifisucks]

one

 

[hifisucks]

two

 

[hifisucks]

threeeee

 

[hifisucks]

Thought I build with real wood...pine...like most instruments...hahaha

 

[DrDyna]

threeeee

Looks very nice. Good idea on the wooden slats, that woofer is in foot-range while they're sitting on the floor.

 

[DavidL]

Pine isn't the best wood for speaker boxes, I've seen pine furniture rip itself apart due to humidity and temperature changes, making the wood expand and contract.
Also those wooden slats while providing protection will mess up the frequency response with all that refraction going on.

 

[LafeEric]

...Also those wooden slats while providing protection will mess up the frequency response with all that refraction going on.

I would argue that at long wavelengths that would be pretty unnoticeable - but has anyone ever taken any measurements to try to quantify?

 

[DavidL]

I'm guessing that woofer is playing up to the 400-500Hz range, hardly long wavelengths. As for measurements, don't hold your breath.

 

[badman]

hm. 500Hz is what, a 2' wavelength? A 1" boundary is pretty small. I'd not worry overmuch about it- I'd think of it as more of a high-frequency diffusor, which will only come into play meaningfully with stop-band artifacts.

I'm sure it'd be audible listening to just the woofer, but not necessarily audible in a negative sense.

I agree with the concerns about the use of pine, nevertheless, it's a nice looking build- very attractive.

 

[LafeEric]

Looking at the Cornscala site Cornscala Style C | Critesspeakers.com it looks like the Xover points are 500/5000. The D-405 driver does play down to 500 Hz.



The Cornscala does look mighty fine... Might think about doing a pair myself some day!

 

[hifisucks]

Pine isn't the best wood for speaker boxes, I've seen pine furniture rip itself apart due to humidity and temperature changes, making the wood expand and contract.
Also those wooden slats while providing protection will mess up the frequency response with all that refraction going on.

Take it easy! That sounds like pieces of wood flxing all around!
I worked a long time as a carpenter and wood is such a magnificent material, you can glue it together again!
And I am not living in the jungle or sub tropical area...
The box is glued so good you could probable use as a boat and it wouldn't crack...hahaha
I made many experiments with those wooden slats my friend...maybe a dog could hear a difference...hahaha

 

[DavidL]

It doesn't take much difference in humidity or temperature to cause pine to contract or expand. I live the southern USA and have seen tables split right in two with the grain running in opposite directions and not allowing the pieces to "float".
Also pine isn't very good for speaker cabinets. If it was more manufacturers would be using it.
You made many experiments with the slats? Then I guess you have before and after measurements showing how they don't cause any changes in the frequency response. Care to share? How could a dog hear any difference if the woofer is rolling off at 500 Hz? Seems like an odd thing to say.