This listing is for a set of three JBL Professional 3678 speakers.

Designed with a slim profile to enable them to be housed behind a cinema screen without taking up much space. I think they were probably the highest end model sold by JBL that had a depth of less than 12".

Equally at home in various Professional Audio settings.

The 3678 is 98db sensitivity and only an 8ohm load, so very easy to drive, even to high listening levels.
THX (Lucasfilm) certified in cinemas up to 45,000 ft3 when bi-amped.

Specs can be found here:

https://jblpro.com/en/site_elements/3678-spec-sheet

Each cabinet houses one 2226H woofer providing the low frequencies, these are one of JBL's legendary 15" woofers and highly renowned for their performance and sound quality.

The high frequencies are supplied by a very high quality 2425 1" exit titanium dome compression driver, this same driver was used in the uber high end JBL Project Everest D66000 Speakers.

When I got them one was missing it's horn support, unfortunately spares were unavailable from JBL at the time so I commissioned a new one to be made up. It holds the horn in the right location but is beefier than the original, as I thought it didn't hurt to make it more robust.

They are in generally good condition with just a few marks here or there as can be seen from the pictures and a few scuff on the base from being moved around. 

Probably worth more than the starting price for the drive units alone.

Due to the size and weight these are for collection in person only, sorry no postage offered on these.