AC Power Connections

LSR6328P Biamplified Studio Monitor System

The LSR6328P can accommodate power from 100 to 250 VAC 50/60 Hz by way of an autosensing power supply. This requires no atten- tion on the part of the user.

The ground terminal of the IEC plug is required by wiring codes and regulations. It must always be connected to the electrical installa- tion safety ground. The LSR6300 Series models have carefully designed internal grounding and balanced inputs and outputs to reduce the possibility of ground loops (hum). If hum or buzz occur, see Appendix A for suggested correct audio signal wiring and system grounding.

Audio Level Adjustment

The audio level sensitivity of the LSR6328P can be adjusted for almost any situation. Monitor outputs of consoles and work stations are normally at a nominal level of +4 dBu or -10 dBV.

The LSR6328P can be set up for fixed or variable gain. As shipped from the factory, a nominal signal input of -10 dBV (0.3 volts) will produce an output of 94 dB SPL at 1 meter in an anechoic environment. This allows the user to get a good match when using either professional or semiprofessional equipment. Using the DIP switches on the back as shown below in Figure E, the system can be set for +4 dBu, +8 dBu or +12 dBu sensitivity.

Switch 1 enables the Trim Control. With the switch in the down position, the Trim Control is out of the circuit and does not affect the input sensitivity. In the up position, the input trim is added to the circuit and will attenuate the input level from 0 - 13 dB relative to nominal.

•Switch 2 lowers the input sensitivity to +4 dBu sensitivity when in the up position.

•Switch 3 lowers the input sensitivity to +8 dBu sensitivity when in the up position.

•Switches 2 and 3 in the up position lower input sensitivity to +12 dBu.

Figure E

Low Frequency Adjustment

The low frequency response of the LSR6328P can be adjusted to increase or reduce the low frequency output level. With all bass adjustment switches off, the unit is set to a 36 dB/octave roll-off with a maximally flat characteristic.

Switch 4 - VLF, Very Low Frequency Protect: Switch 4 changes the low frequency roll-off to a 24 dB/octave slope, which extends the low frequency capability, while slightly reducing maximum sound pressure level. This is useful for spotting subsonic signals that could other- wise go undetected. For example, extreme low frequency rumble will be visible as a pronounced "fluttering" motion of the woofer cone. To protect the low frequency transducer, normally switch 4 is set to Off.

LSR6300 specifications

The JBL LSR6300 series of studio monitors is renowned for its exceptional sound quality and precision, making it a preferred choice for both professional studios and passionate audiophiles. With advanced technologies and meticulous engineering, the LSR6300 series delivers a clear, accurate listening experience that is vital for mixing and mastering.

One of the standout features of the JBL LSR6300 is its Image Control Waveguide technology. This innovation ensures not only a wide sweet spot but also excellent off-axis performance. This means that no matter where you are positioned in relation to the speakers, you'll receive a balanced and consistent sound. This technology allows for an even distribution of sound across the audio spectrum, making it easier for engineers to make informed decisions about their mixes.

In terms of drivers, the LSR6300 series boasts high-performance woofers and tweeters that are specifically designed to provide an extended frequency response. The 8-inch woofers replicate low frequencies with impressive depth, while the 1-inch neodymium tweeters deliver crisp high frequencies without introducing distortion. The result is a full-range output that captures the nuances of any audio material.

Another notable characteristic is the room tuning controls on the back of the monitor. These controls enable users to optimize the sound output based on the acoustic environment of their studio. By adjusting the low-frequency and high-frequency settings, you can compensate for any acoustic anomalies in the room, ensuring your mixes translate well to other playback systems.

Furthermore, the LSR6300 is equipped with JBL's patented Slip Stream port design. This rear-firing port minimizes turbulence and enhances low-frequency response. The design ensures that bass notes are rendered with clarity and punch, allowing for a dynamic listening experience without excessive boominess.

The robustness of the LSR6300’s construction is also noteworthy. With a solid enclosure that reduces resonance, the monitors are built to withstand the rigors of daily use. The sleek, professional appearance adds to their appeal in any studio setting.

In conclusion, the JBL LSR6300 series integrates advanced technologies and thoughtful design elements, making it an exceptional tool for audio professionals. With its accurate sound reproduction, flexible room control options, and thoughtful engineering, the LSR6300 continues to set a high standard in the field of studio monitoring.