Philips Sq 45 Power Amplifier Lbb 1348/40

The Philips SQ 45 Power Amplifier LBB 1348/40 is a strong, high-quality audio amplifier made for professional sound reinforcement and public address systems.

Important Features and Description:

Model: LBB 1348/40

Power Output: 400 watts for each channel of the amplifier

Voltage for the main supply is 110/127/220-230/240 V ~ 50/60 Hz with a 30 A inrush current limiter.

Emergency Battery Supply: +48 V DC with a current limiter (1 A) and safety against polarity changes

Balanced audio inputs: Music input with configurable sensitivity (0.5–10 V), priority input (1 V), and surveillance/test input (500 mV at 20 kHz)

Signal-to-Noise Ratio: At least 87 dB, but usually more than 91 dB

Response to Frequencies: 50 Hz to 20,000 Hz (-3 dB)

Total Harmonic Distortion (THD): at 1 kHz and rated power, less than 0.5%

Cross Talk Attenuation: More than 70 dB at 5 kHz

Output Protection: The circuit is safe from misloading, short circuits, and oscillations at any frequency driving

Power Use: 1200 VA at rated output power (-3 dB), 500 VA at -8 dB, and 55 VA with no audio signal at all

After being turned on, the unit is ready to use in no more than four seconds.

Meets the European EMC standards EN 55013 and EN 55020

Weight: About 16.4 kg

Made in the Netherlands (Holland)

Made to work well in professional PA projects with several channels: ability to put out 1 x 400 W

The amplifier has monitoring outputs like a headphone jack and a VU meter. It can also work with loudspeakers that have line voltages of 100 V, 70 V, or 50 V. The amplifier works well with public address systems that need excellent fidelity, dependability, and smooth operation.