My first MTM project. Kablaah Audio

[DaytonPioneerRules]

This was my first project during my membership on this site. I had decided to go with an MTM to compete with the several subwoofers I already have in my room.

The drivers are Dayton DA175-8 7 inch aluminum cone mid woofers.

The tweeters are Dayton DC28F-8 1 1/8 Silk dome tweeters.

The crossover is a Dayton at 2kHz, yes its a prebuilt and yes i know those are bad. I may one day make my own, i left the bottom of the towers removeable and that is what i have the crossover mounted to for easy access.

The towers stand 49 3/4 inches tall.

The towers have a final Qtc of .707 when taking all inner volume and subtracting driver and cleat volume.

They are made of 3/4 inch MDF with 1 1/2 inch cedar cleats inside for rigidity. The entire tower is sealed from the inside with Titebond and then sealed on the outside with bondo. I used screws from the cleats into the MDF for the front and everywhere else the screws are countersunk into the MDF and then screwed into the cleats. Bondo was used to cover up all cracks as well as every screw hole being filled.

They have been finished with two cans of car primer(two cans each tower) and painted with gloss black. The camera gives it a strange look in the flash, i do not know why but i can assure you that after some dusting they are very smooth.

The tweeters have an offset of 1 1/2 inches from center and rest at ear level from my listening position.

The screws are not painted but left as galvanized to give the towers a better look.







I think they sound amazing. They definantly destroy everything i have or have had. I had a 5.1 system set up with junk speakers but i find myself fully content with only a 2.1 now. (well, i suppose its a 2.3 since i have 3 subwoofers running) With my own decibel meter i was getting a reading of 100db at 1kHz before I was unable to take the noise any longer.

I decided to call them Kablaah Audio. It has been a spontanious saying of mine for years similar to Homer's "Doh" and I fealt it was appropriate since these speakers were made rather spontaniously. I began thinking about them three weeks ago and after two weeks of designing and one week of building I already have them up and running.

[bigbardmusiq]

These are beautiful, they turned out great. I actually like the galvanized screw look and the finish turn out great. I plan on building a pair very similar but wall mountable, maybe the "Overnight Sensations" mainly because I can understand the crossover layout, there cheap, and have good bass!

[johnnyrichards]

Pete Schumaker seems to have a deeply personal understanding of those woofers, he could probably sort out a crossover for you.

[johnnyrichards]

They look nice, by the way.
(Shiny screws don't bother me, either)

[DaytonPioneerRules]

I forgot to ask in post but...

If I already have a Qtc of .707 is it necessary to polyfil the interior of the towers? And, could polyfil be dangerous if resting on a crossover?

[arlis_1957@yahoo.com]

your ctc looks to be more than 6.5 inches. am i wrong? they probably will never get that hot, but a little breathing room could not hurt.
i have the same woofers crossed at 2k to the vifa alumanum tweeter.

[badman]

I forgot to ask in post but...

If I already have a Qtc of .707 is it necessary to polyfil the interior of the towers? And, could polyfil be dangerous if resting on a crossover?

Polyfill is fine resting on an XO. You definitely want to stuff them and stuff them well- the tall tower format will have a lot of top-bottom resonance if you don't stuff them, but you can get away with a fairly heavy fill in just the bottom half, so as not to obstruct the drivers.

[DaytonPioneerRules]

Polyfill is fine resting on an XO. You definitely want to stuff them and stuff them well- the tall tower format will have a lot of top-bottom resonance if you don't stuff them, but you can get away with a fairly heavy fill in just the bottom half, so as not to obstruct the drivers.

Thank you for the answer.

[Redneck Texan]

Nice.

..... how much power are you hitting them, and your 3 subs, with?

[DaytonPioneerRules]

Nice.

..... how much power are you hitting them, and your 3 subs, with?

got three ten inch subs with 400 watts total and then the two towers are being given 40 ea.

two of the three subs are directly behind the towers and run the left and right accordingly between 50-150 hz (100 watts ea). Then one sub behind me does 25-60 hz (200 watts). The subs behind the speakers integrate perfectly with the towers while the lower one in the back fills the room.

[arlis_1957@yahoo.com]

so the da175 does not take over until 150? mine did distort at 60, but at 80hz they sound nice.

[DaytonPioneerRules]

so the da175 does not take over until 150? mine did distort at 60, but at 80hz they sound nice.

nope. the towers get full signal and play full signal with an active equalizer for removing 60 and below when going to higher volumes. my primary listening does not even use the subwoofers, just the towers since they make enough bass for most songs. only when i watch movies or really want to defen myself that i turn on the subs.

[martyh]

Shiney screws can make the project cool!