I tried to keep the boxes everything but a few non speakers boxes got tossed out. gotta have your own place to save them. Then my lg Blu-ray player broke because instead of it being in the box that got tossed the power cable was crammed in a plastic box. Or old age broke it.
how tall are those towers diy is probably the only way to get transmission lines there so rarely built it seems for mass market . So much bass you don’t need subs is impressive even for high end drivers 10” + are uncommon also these days.
The drivers are 10" SEAS metal cone drivers, two in each bass line. These have an Fs of 20 Hz and ideal Thiel/Small parameters for use in transmission lines. However the upper of the two 10 drivers, is driven above sub range to handle the baffle step compensation for the mid drivers. This BSC is continuously variable so it can be set precisely for room and speaker position. This is possible as the speakers are active triamped. The center speaker also has variable BSC. Pipes are very efficient at converting air pressure to air displacement, so the bass drivers do not need high displacement, although they are no slouches in this regard.
Total enclosure height on the right and left main speakers is 5'9".
Their inspiration was the famed dual transmission lines custom designed and built for the BBC studios Maida Vale. This studio no longer exists as the BBC had to sell those studios to raise cash. I did manage to purchase two of the custom Quad 405-II power amp cards when they appeared on eBay, just for nostalgic reasons.
The rear dual lines are even taller, at 6'2 1/4". The bass drivers are two very capable KEF B139 drivers, which are now capable of handling some of the LFE channel as those B 139 drivers are very capable.
As far as I know, the BBC lines and mine are the only dual transmission lines ever designed and built. There may be others but I don't know of them.
So, lets taunt Lovin, with a picture of the 3,200 watt power amp case with 18 audio channels.
