[Old Vid] Early JBL 4350 in Jazz cafe Cortez, Mito Japan - Produced by KENRICK SOUND 水戸・ジャズカフェ『コルテス』 

映画館ではほぼ同じの音質を味わう事ができます。 何故なら、映画館の音響機器は殆どJBL製品だからです。

Em português, pensei que era só eu que assistia esses vídeos.

This is a stereo, not a nightclub system.

Not sure about thin, I think lively would be a better descriptive IMO... at least, that's what I'm hearing (DT880 headphones, Lehmann Rhinelander amp). Probably the room acoustics as you say. Speakers sound gorgeous, wish I could be there to listen in person...

...and also, I think therefore that any live band in the same room would thus sound similar. Closing my eyes, I can definitely imagine a live band sounding that way in place of the speakers...

yes and no.. in most positions they will do fine but in some they can cause trouble. baffle mounting is the most correct but you can get away with placing it almost anywhere, topmount and you have a place little objects can fall into bottom or back you can get to close too the floor or wall(well you could do it as part of the design but then your screwed if you want to move the speaker away from the wall) the number of ports does not matter only total port area and length, with more ports you can have smaller ports in diameter

The 6 holes to the left and right of the two biq white bass woofers are air ports. The one hole to the right of the midrange woofer above the bass woofers in not a port. That is the mouth/throat opening of a high frequency horn with the vertical & horizontal slats there to attach for a louvered lens that comes with JBL's like this. Many owners like to take the lens off likevyou see here. The high horn behind that opening is about 8-10 inches long-4 inches wide at the magnet & weighs about 20lbs made of solid metal. These JBL long-throated very heavy horn & drivers are the magic that give JBL's like this the incredible projection & clarity of the voice, piano, strings, horns, percussion & other mid to upper mid-range sound programming.

Nit disagreeing on tubes with JBLs, but they sound pretty balanced with the Levinsons. Fly Me To The Moon is just right.