Product description
The J8 is a 3-way design housing 2 x 12" LF drivers, one hornloaded 10" MF driver and two 1.4" exit HF compression drivers with 3" voicecoils mounted to a dedicated waveshaping device. The mechanical and acoustical design enables flown vertical columns of up to 24 loudspeakers to be suspended using vertical splay angles between them of 0° to 7° with a 1° resolution. The cylindrical wave segments produced couple coherently in the vertical plane. Due to the dipolar arrangement of the neodymium LF drivers the exceptional 80° horizontal constant directivity dispersion control is nominally maintained down to 250 Hz. The J8 is acoustically and mechanically compatible with the J12 loudspeaker. It can be used in columns of purely J8 loudspeakers or combined with J12s and / or with J-SUBs. The J8 cabinet is constructed from marine plywood and has an impact and weather protected PCP (Polyurea Cabinet Protection) finish. The front of the loudspeaker cabinet is protected by a rigid metal grill, the side and rear panels incorporate four handles, and two NLT4F/M, EP5 or NL8 connectors wired in parallel are also mounted at the rear.
Amplifiers
The d&b D80 and 30D amplifiers are recommended to drive the J8. The 2-Way active J8 requires two channels of the D80.
System data
Frequency response (-5 dB standard)
48 Hz - 17 kHz
Frequency response (-5 dB CUT mode)
85 Hz - 17 kHz
Max. sound pressure1
with 30D
with D80
145 dB
145 dB
Cabinets per D80 (ArrayProcessing)
2
Cabinets per D80 (Line or Arc mode)
4
Loudspeaker data
Configuration
Large format 3-way line array loudspeaker
Nominal impedance
6 Ω (LF) / 12 Ω (MHF)
Power handling capacity LF (RMS/peak 10 ms)
500/2000 W
Power handling capacity MHF (RMS/peak 10 ms)
200/800 W
Nominal dispersion angle (h x v)
80°2
Splay angle settings
0 - 7° (1° increment)
Components
2 x 12" driver / 1 x 10" driver
2 x 1.4" exit compression driver
passive crossover network
Connections
2 x NLT4 F/M
optional 2 x EP5 or 2 x NL8
Dimensions / weight
Dimensions (H x W x D)
360 x 1100 x 570 mm
14.2 x 43.3 x 22.4"
1 1 m, free field, SPL max peak test signal: pink noise with crest factor 4
2 ≥ 250 Hz
