Search found 12 matches

by casey
2016-10-28 4:55 AM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

Ben wrote:Next, I'm thinking of a table-top cajon with port and two resonant sides.
I'm psyched to turn a tall speaker cabinet into a marimbula...
by casey
2013-12-03 3:07 AM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

You've convinced me on one point: that the tapa is much more relevant to the bass kick sound than I thought. Did some tests on mine and it's definitely not just the air spring. Glad to clear that up, thanks. "...could be that they don't take into effect a floppy tapa lowering the overall air spring ...
by casey
2013-12-02 9:03 AM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

I am happy with the cheap plywood. The grain on it really pops with danish wood oil. Yeah, maybe i'm not enough of a wood snob, but i'm in to plywood too. :-) But...we're not doing the same calculation or maybe even discussing the same theory. The practical limits for the vent tuning of your box wi...
by casey
2013-12-01 4:32 AM
Forum: Design and Building
Topic: Snare (fixed)
Replies: 3
Views: 17638

Re: Snare (fixed)

If the snares touch the tapa loosely, I imagine that would mean not much snare sound and more ringing. But I didn't really experiment with that. Interesting. I'd like to play with snares more... I have two in mine, about 10" long each. They sound great to me, but I like a ton of snare sound (not wi...
by casey
2013-12-01 4:26 AM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

" the tapa doesn't vibrate at all -- not even once cycle -- it's fully damped." Then the result would be complete silence! We could argue about this a lot! The dead hand slapped tapa surely is vibrating, just less and at a higher pitch now that your hand is there. The result would not be silence, i...
by casey
2013-11-29 4:48 AM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

I'm building one now for maximum resonance, with an 1/8" tapa front and back, so I can play the back without snare. I suspect this will be louder than a thicker back, since the back will resonate along with the tapa, granted there are cancellations at some frequencies when you do this. It sounds li...
by casey
2013-11-27 7:43 PM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

Thanks! I base that on the formula used to determine the vent length of a ported loudspeaker. http://www.mobileinformationlabs.com/HowTo-1Woofer-Box-CAL%20Port%20lenth%201.htm Using volume 1.3L, frequency 92Hz and port diameter 4", you get 0.125", the typical 1/8" back. If you put the port on a 1/2"...
by casey
2013-11-26 9:06 PM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

The port acts somewhat like a Helmholz resonator...and with the typical volume/dimensions, the tuning is around 100Hz. You can lower that by using some 4" PVC as a port tube, but that will only work if you have the hole on a thicker side panel. Do you have a source or math on that 100Hz? I ask beca...
by casey
2013-11-26 3:07 PM
Forum: Design and Building
Topic: Cajon sounds like a tom
Replies: 16
Views: 71883

Re: Cajon sounds like a tom

I think i know the tom sound you're describing. I don't care for it either, though i could see how some would like it. I have heard it in a few "fancy" cajons made by stringed-instrument luthiers who make a cajon one day... they seem to think of it like a real drum head that needs to sing, where I (...
by casey
2013-11-22 11:10 PM
Forum: Design and Building
Topic: custom-made plywood, other ideas
Replies: 1
Views: 14304

custom-made plywood, other ideas

An email conversation had recently with a friend: ----------- I have some sitka spruce guitar tops, I wonder what would happen if I made my own plywood out of them, maybe with a thin flexible membrane of some sort in between to add durability, but maintain flexibility to get the air oscillating. ---...
by casey
2013-08-26 7:07 PM
Forum: Design and Building
Topic: Snare (adjustable)
Replies: 5
Views: 25065

Re: Snare (adjustable)

I purchased a guitar sting cajon before I started building. I like the "drum snares" much better. Agreed. The whole guitar-string thing seems to be a very different sound (perhaps more traditional) from the "kick"/"snare" kind of cajon most people are looking for these days (myself included). I'd l...
by casey
2013-06-23 10:45 PM
Forum: Design and Building
Topic: Comments from the main article
Replies: 0
Views: 31435

Comments from the main article

These are the comments from the main cajón building article. Once these forums were created, those comments were disabled, so you can now read them here. --------------------------- Subject : instead of using guitar strings or a snare From : nate Date : 2010-01-28 13:13:56 a different way of making ...