Go Big or Go Home - JBL System includes three JBL 3677s (Right Left Center) and one 3635 JBL Sub. This system was fully tested by DALAUDIO and is in good operating condition. It was previously hung with large steel mounts (available if you have an building or airplane hanger you can mount them in) but we removed them and installed matched washers/finishing screws to cover the mounting holes. What a system. Amazing efficiency of these speakers (see below) allow for a significant output with as few as 75-100 WPC RMS. If you can create the space this is a hell of a speaker system. The cost of these was north of $4K for this system without the mounts.

Cash Sale, No Holds, Call or Text for Local Pickup Only - Bring two men and a truck. Call in advance to hear them.

The JBL 3677 is a highly regarded two-way screen channel loudspeaker originally designed for small commercial cinemas, but frequently utilized for high-output home theaters and studio monitors. Featuring a 15-inch low-frequency driver and a titanium diaphragm compression driver on a Bi-Radial horn, it offers exceptional dynamics, cinematic slam, and 99 dB efficiency

JBL 3635 - The JBL 3635 is a professional, passive 18-inch cinema subwoofer system designed primarily to provide low-frequency enhancement for small commercial movie theaters, screening rooms, and high-end home theaters. It is highly regarded for its shallow-depth cabinet design, which makes it exceptionally easy to place behind an acoustically transparent projection screen. Due to its massive 100 dB sensitivity rating, it delivers immense, bone-rattling physical impact ("slam") in the 40 Hz to 100 Hz range using very modest amplifier power.

While designed to be placed behind cinema screens, the 3677 and 3635 have cultivated a strong following among audiophiles and home theater enthusiasts. Its shallow enclosure design (11.5 inches deep) makes it practical to mount near walls or inside custom cabinetry. Because of its high sensitivity, it can be driven effectively by a wide variety of receivers and amplifiers, delivering clear dialogue and massive dynamic impact.

JBL 3677 Key Specifications
Original Price $877/speaker
Low Frequency Transducer: One 15 in low frequency driver.
High Frequency Transducer: 1 in horn throat diameter, 1.75 in pure titanium diaphragm compression driver.
90° x 40° Flat-Front Bi-Radial® horn.
Passive network with driver protection circuit.
Shallow profile cabinet minimizes space requirements
Frequency Range: 40 Hz to 20 kHz (-10 dB)
Power Capacity: 250 W continuous pink noise
Nominal Impedance: 8 Ohms
Sensitivity: 99 dB (1W, 1m) - Incredible efficiency
Crossover Frequency: 1.2 kHz
Dimensions: 30.125" H x 25.625" W x 11.5" D
Weight: 85 lbs

JBL 3635 Key Specifications
Original Price $1390/speaker
Low Frequency Driver: Single 460 mm (18-inch) JBL 2042H transducer
Enclosure Type: Ported / bass-reflex deign
Power Handling: 300 Watts continuous program power (or 225 Watts AES 2-hour rating).
Frequency Range (-10 dB): 28 Hz to 500 Hz.
Frequency Response (±3 dB): 38 Hz to 100 Hz.
Sensitivity: Extremely high at 100 dB (1W @ 1m), offering incredible acoustic efficiency.
Nominal Impedance: 8 Ohms.
Maximum Peak Output: 130 dB SPL.
Input Connectors: Reliable barrier-strip screw terminals.
Dimensions (H x W x D): 46.0" x 25.6" x 14.5"
Net Weight: 113 lbs