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16" Table Tuba
Posted: Tue May 17, 2011 1:24 pm
by Mr_keldor
Here are some pictures from my recent 16" Table Tuba Build. Pretty much followed Bill's instructions. Cut most panels using a panel jig on my table saw as per Bill's design. The panels turned out pretty accurate and after the first few panels I started contructing without screws. I simply glued and clamped.. including the final side. Installed the 8" Dayton recommended driver. Powerred the unit with a vintage Audio Design PA100 MOSFET 100 watt per channel mono bridged power amp. Sounds great!
Re: 16" Table Tuba
Posted: Tue May 17, 2011 1:26 pm
by Mr_keldor
more pics
Re: 16" Table Tuba
Posted: Tue May 17, 2011 1:28 pm
by Mr_keldor
and more...
Re: 16" Table Tuba
Posted: Tue May 17, 2011 1:29 pm
by Mr_keldor
the rest...
Re: 16" Table Tuba
Posted: Tue May 17, 2011 1:40 pm
by Ken Lustgarten
Have you tested it out yet? How does it sound? After I get done with my current builds dr's titians and wedgehorns I am going to build one of these. I got lucky and already have a tang band 8" driver that will work in a small ported sub that I build a few years ago.
Re: 16" Table Tuba
Posted: Tue May 17, 2011 3:08 pm
by Mr_keldor
CraigsAudio wrote:Have you tested it out yet? How does it sound? After I get done with my current builds dr's titians and wedgehorns I am going to build one of these. I got lucky and already have a tang band 8" driver that will work in a small ported sub that I build a few years ago.
It sounds amazing. It has replaced a ported down firing 8" Mission sub. As expected there is a big change in the low end sound. I have no equipment in to make any actual sounds measurements so I am restricted to what I can hear. The home theater now has a solid low end response that is both musical and heart stopping.
The sub is corner loaded behind the seating position. The Yamaha RVX663 receiver choose a crossover of 60Hz and that seems to work as I am getting no locational signals from the sub.
Here's a question:
I have not tried the TT in any but the one spot that I had had the old sub in. (That location was chosen by moving the old sub around the room until I found the spot that gave me a peak in the listening position.) Would you expect the TT to behave in a similar way to the old sub in terms of room nodes? There is one other location in the room that the TT can go but it is where I had previously found was not a good spot for the old sub.
Steve
Re: 16" Table Tuba
Posted: Tue May 17, 2011 4:48 pm
by DJPhatman
If it works well, leave it alone. Don't fix what isn't broke. However, I do suggest that you at least try and raise the crossover frequency to at least 80Hz, or higher. I think 60Hz is just too low, especially when the sub will handle the band better than the mains.
Re: 16" Table Tuba
Posted: Tue May 17, 2011 6:21 pm
by Bill Fitzmaurice
DJPhatman wrote: I think 60Hz is just too low, especially when the sub will handle the band better than the mains.
With the rising response of the TT that's about right, unless you've got 4th order filtering.
Re: 16" Table Tuba
Posted: Fri May 20, 2011 1:26 pm
by Mr_keldor
Bill Fitzmaurice wrote:DJPhatman wrote: I think 60Hz is just too low, especially when the sub will handle the band better than the mains.
With the rising response of the TT that's about right, unless you've got 4th order filtering.
Thanks Bill and DJPhatman for your comments. I will bump it up to 80Hz and see how that sounds.