JBL PRX412M Technical Manual

Specifications

Acoustic & Electrical Specifications

Nominal Impedance: 8 Ohms
System Power Rating, Pink Noise: 300W/600W / 1200W, 2 hrs (Continuous/Program/Peak)
Frequency Response (±3 dB): 62 Hz - 19 kHz
Frequency Range (-10 dB): 50 Hz - 20 kHz
Maximum SPL: 120 dB SPL peak (126 dB SPL peak)
System Sensitivity: 95 dB SPL 1 watt @ 1 meter
Crossover Frequency: 2.0 kHz

Aural Sweep Test Specifications

System Aural Sweep Test: 7V Input, 40 Hz to 20 kHz
L.F. Aural Sweep Test: 2.83V Input, 43 Hz - 3.8 kHz
H.F. Aural Sweep Test: 0.75V Input, 500 Hz to 1.5 kHz

Physical Specifications

Enclosure Dimensions (H x W x D): 645 x 380 x 345 mm (25.25 x 15.0 x 13.5 in.)
Net Weight: 38 lb (17.5 kg.)

Warranty Information

Refer to Warranty Statement packed with each product.

System Components

Cabinet: Enclosure (Not For Sale)
Grille: 444685-002
Low Frequency Transducer: MB112-8, 305 mm (12 in) Cone woofer
D.C. Resistance: 5.0 ohm
High Frequency Transducer: 2414H-C, 25 mm polymer diaphragm compression driver
D.C. Resistance: 3.60 ohm +/- 0.2 ohm
Input Cup Assembly: 5011406

Package Contents

Warranty Card: 59660
Manual: 5011443
Carton: 5013389
Filler: 5013390
Filler, Bottom: 5011448
PKG, Microfoam (4): 49790P

Wiring Diagram

The wiring diagram illustrates the connections for the low and high frequency drivers. The low frequency driver (5013391) is connected via yellow/black and green/black wires. The high frequency driver (2414H-C, 5000169X) is connected via a yellow wire. Both drivers connect to the Input Cup Assembly (5011406).

Note: Individual parts for the crossover are not available. A complete replacement assembly should be ordered.

Component Exploded View

The exploded view shows the assembly of the JBL PRX412M speaker. Key components include:

Enclosure Assembly for PRX412M (Not Available for Sale)
Grille Assembly (444685-002)
Grille Support (2) (444708-001)
Horn (338800-001)
Gasket, Horn (351577-001)
Driver, Low Freq. (5013391)
Driver, High Freq. 2414H-C (5000169X)
Input Cup Assembly (5011406)
Input Cup (5011410)
Input Cup Gasket (5013128)
Handle Cup (444686-001)
Gasket, Handle (444827-001)
Handle Bar Assembly (364855-003)
Feet (8) (444707-001)
Bracket, Side (6) (444777-002)
Various screws, bolts, and T-nuts are also listed with their respective part numbers and specifications.

Input Cup Assembly Schematic (5011406)

The schematic for the Input Cup Assembly (5011406) details the internal circuitry, including resistors (R1, R2, R3, R4), capacitors (C1, C2, C3, C4), and inductors (L3, T2). It shows the connections from the Neutrik Connector (NLJ2MD-V) to the high and low frequency drivers, with specific wire gauges and lengths indicated.

Note: Individual Parts for the above crossover are not available. A complete replacement assembly should be ordered.

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