J-INFRA subwoofer J-INFRA_subwoofer J-INFRA_subwoofer

dbaudio-j-infra-subwoofer-back_755455640
dbaudio-j-infra-subwoofer-back_755455640dbaudio-j-infra-subwoofer-front_1753479632
0.00 2040-01-02 USD InStock


Call for price : 973-731-7131

Contact us for more information


 

 

Product description

The J-INFRA is a cardioid infra subwoofer that can be used to supplement J-Series systems consisting of J8, J12 and J-SUB cabinets. It extends the frequency response of a J-Series system down to 27 Hz and can only be used in ground stacked configurations in conventional left/right set-ups, as well as arranged in an infra subwoofer array. It has two bass-reflex chambers containing three 21" drivers, two facing forward in one chamber that are driven from one channel of the d&b amplifier and one facing backwards driven by another amplifier channel. Through this driver set-up its cardioid dispersion pattern avoids unwanted energy behind the system and greatly reduces the reverberant field at low frequencies, providing highest accuracy in low frequency reproduction. Selecting Hypercardioid mode in the amplifier optimises the tuning of front and rear channels for a maximum rejection at the left and right sides behind the cabinet. The J-INFRA cabinet is constructed from marine plywood and has an impact and weather protected PCP (Polyurea Cabinet Protection) finish. The front and rear of the loudspeaker cabinet are protected by a rigid metal grill and the side panels incorporate eight handles. The cabinet front is fitted with four catches for securing an optional wooden lid.

Amplifiers

The d&b D80 amplifier is recommended to drive the J-INFRA. The d&b 30D can also be used. The 2-Way active mode for the J-INFRA requires two channels of the D80.

System data

Frequency response (-5 dB standard)
27 Hz - 60 Hz
Max. sound pressure1
with 30D
with D80

141 dB
144 dB
Frequency response (–5 dB 70 Hz mode)
27 Hz - 70 Hz
Cabinets per D80
2

Loudspeaker data

Configuration
Large format cardioid subwoofer
Nominal impedance
3 Ω (front) / 6 Ω (rear)
Power handling capacity front (RMS/peak 10 ms)
1200/4800 W
Power handling capacity rear (RMS/peak 10 ms)
600/2400 W
Components
3 x 21" driver
Connections
1 x NLT4 F
optional 1 x EP5 or 1 x NL8

Dimensions / weight

Dimensions (H x W x D)
685 x 1180 x 10402 / 1158 mm
27.0 x 46.5 x 41.03 / 45.6"
Weight
152 kg
335 lb

1 1 m, free field, SPL max peak test signal: pink noise with crest factor 4
2 dimensions without wheels

Connect With dB Sound Store Today

Please contact dB Sound Store using the Contact form to the right. We will respond to you quickly by email or telephone regarding Sound Equipment purchases, maintenance, repair, custom Sound System Design and expert installations. Let us know how we can help you today!

 
Since 1992, dB Sound Store has worked with some of the biggest artists, producers and commercial studio owners in the music industry to meet all of their diverse needs. The extensive client list of top industry professionals speaks to dB Sound's commitment to excellence. Unlike many of our competitors we listen to what you want, provide it at a reasonable cost and support the end result long after the job is finished.  OUR CLIENT LIST
 
dB Sound Store, LLC
33 Yale Terrace
West Orange
New Jersey, 07052
Call Us: 973-731-7131

Contact dB Sound Store