calhockey10 Posted February 9, 2016 Share Posted February 9, 2016 http://indianapolis.craigslist.org/ele/5439618524.html Quote Link to comment Share on other sites More sharing options...
jason str Posted February 9, 2016 Share Posted February 9, 2016 If 3/4 stock was used and still measures the standard 36" x 36" it was not built correctly. Take a pass on this one. Quote Link to comment Share on other sites More sharing options...
wvu80 Posted February 9, 2016 Share Posted February 9, 2016 How would you move a thing that big? I would not want to drag it up OR down those steps! What does it weigh? Quote Link to comment Share on other sites More sharing options...
jason str Posted February 9, 2016 Share Posted February 9, 2016 The standard one is not too heavy, just bulky. 3/4 stock would weigh 50% or so more. Standard model with stamped frame driver, well under 100 LBS. Add for 3/4 stock and/or cast driver if so equipped. Quote Link to comment Share on other sites More sharing options...
twistedcrankcammer Posted February 9, 2016 Share Posted February 9, 2016 Is the Tuba a tapped horn design??? Roger Quote Link to comment Share on other sites More sharing options...
Quiet_Hollow Posted February 9, 2016 Share Posted February 9, 2016 Nope. It's a folded, front-loaded horn....like the K-Horn, La Scala, Belle, and MWM. 2 Quote Link to comment Share on other sites More sharing options...
twistedcrankcammer Posted February 9, 2016 Share Posted February 9, 2016 How low does it play, and what is it's acoustic output? Roger Quote Link to comment Share on other sites More sharing options...
mustang guy Posted February 9, 2016 Share Posted February 9, 2016 I agree with Jason. It was not built with the right type of plywood, or the right thickness. 3/4" Baltic Birch looks like this: He used this: He should have used this: BB plywood is heavy, void free, and the 1/2" stuff is 9 ply. The 3/4 stuff is 13 ply. The driver door isn't very well secured and the amp is in an enclosure that probably isn't big enough to let it stay cool. 1 Quote Link to comment Share on other sites More sharing options...
Quiet_Hollow Posted February 9, 2016 Share Posted February 9, 2016 How low does it play, and what is it's acoustic output? When they're built correctly Fc is 22-25Hz depending on width and driver used. In a typical living space, usable in-room response can dip down to 16-18 Hz and accepts mild EQ boost below Fc. Acoustic output varies according to construction and setup, but they can get scary loud. The one I built does 117 dB SPL (from 20Hz to crossover) at the listening position all day long....from a single 12" driver into a 4600 cu foot room. The wider versions produce even more output. 1 Quote Link to comment Share on other sites More sharing options...
jason str Posted February 9, 2016 Share Posted February 9, 2016 When using 3/4 plywood to build one of these you have to add to the size of your sides (36" x 36") 1/4" for every panel from the inside out on the standard THT and adjust your layout for compensation. Its a lot of extra work and not needed in any way, just follow the plans they are very detailed. Quote Link to comment Share on other sites More sharing options...
jason str Posted February 9, 2016 Share Posted February 9, 2016 How low does it play, and what is it's acoustic output?When they're built correctly Fc is 22-25Hz depending on width and driver used. In a typical living space, usable in-room response can dip down to 16-18 Hz and accepts mild EQ boost below Fc. Acoustic output varies according to construction and setup, but they can get scary loud. The one I built does 117 dB SPL (from 20Hz to crossover) at the listening position all day long....from a single 12" driver into a 4600 cu foot room. The wider versions produce even more output. Its best not to EQ below Fc but i could see it for lower level listening. The 24"+ THT or THTLP should reach 126-127 dB with the recommended 15", the wider the flatter the response. Quote Link to comment Share on other sites More sharing options...
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