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Detailed technical specifications for the dividing networks, including gain, output, distortion, and frequency response.
Procedures for connecting the network and configuring it for bi-amplification or tri-amplification.
Steps for installing the electronic frequency dividing network within a sound system.
Visual guides for bi-amplification and tri-amplification system configurations.
Crucial checks for correct connections, transducer phasing, and preventing damage.
Procedures for balancing driver levels for optimal sound system performance.
Instructions for installing crossover cards and converting operating voltage.
Information on building custom crossover networks using blank cards.
Recommendations for protecting drivers from switching transients.
Detailed technical specifications for the dividing networks, including gain, output, distortion, and frequency response.
Procedures for connecting the network and configuring it for bi-amplification or tri-amplification.
Steps for installing the electronic frequency dividing network within a sound system.
Visual guides for bi-amplification and tri-amplification system configurations.
Crucial checks for correct connections, transducer phasing, and preventing damage.
Procedures for balancing driver levels for optimal sound system performance.
Instructions for installing crossover cards and converting operating voltage.
Information on building custom crossover networks using blank cards.
Recommendations for protecting drivers from switching transients.
The JBL Professional Series 5233 Single Channel and 5234 Dual Channel Electronic Frequency Dividing Networks are designed for use with studio monitor or sound reinforcement loudspeaker systems where bi-amplification or tri-amplification is desired. These devices serve to separate an audio signal into high and low frequency bands, which are then fed to appropriate power amplifiers for driving loudspeaker system components.
The 5233 (single channel) and 5234 (dual channel) units feature differential high impedance inputs, unity gain in the passband, and unbalanced low impedance outputs. The 5233 provides a single channel crossover, while the 5234 offers two separate channels with independent crossover action, making it suitable for stereo installations. The crossover frequency for each channel is determined by plug-in modules, which are available for various commonly used frequencies. Filter slopes can be either 12 dB or 18 dB per octave, with high and low frequency outputs attenuated by 3 dB at the crossover point. Special crossover cards are also available for specific JBL bi-amplified studio monitors like the 4343 and 4350. Blank cards can be used to construct custom crossover networks for other frequencies.
The network receives program signals from a line-level source (e.g., preamplifier, studio console, or portable mixer) and divides them into high and low frequency bands. These outputs then drive the respective power amplifiers and loudspeaker components. Input connections can be balanced or unbalanced, while output connections are unbalanced, requiring shielded cable. For longer output cable lengths (greater than 4.5 to 6 meters), isolation transformers are recommended to reduce radio frequency interference or hum. The outputs can deliver +18 dB (6.2 V into 600 Ω) and can drive the line inputs of conventional amplifiers, with two or more power amplifiers being driven from each output.
The 5234 dual channel network can also be configured for tri-amplification by connecting the low frequency output of Channel 2 to the input of Channel 1. This allows Channel 1 outputs to drive midrange and low frequency amplifiers. When a midrange or high frequency driver is directly connected to a power amplifier, a series capacitor is recommended to attenuate unwanted low frequency "on-off" switching transient signals that could damage the driver. Passive, high-level frequency dividing networks in JBL studio monitors designed for bi-amplification already include these protective attenuation capacitors.
General| Brand | JBL |
|---|---|
| Model | 5233 |
| Category | Network Accessory |
| Language | English |
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