LBB 1925-10 Bosch Plena System Pre-Amplifier

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LBB 1925-10 Bosch Plena System Pre-Amplifier Specification

Alarm
No Alarm Function

Speaker
External speaker output

Channels
6 Mic/Line Inputs, 3 Auxiliary Inputs

Noise Control
Less than 1 mV (output noise)

Impedance
Mic: 1.2 k, Line: 20 k

Use
Audio pre-amplification for PA systems

Sensitivity
Mic: 3 mV, Line: 200 mV

Product Type
Pre-Amplifier

Material
Metal chassis with front panel

Power Supply
230V AC, 50/60Hz

Output Power
Max 2V RMS

Input Power
Not applicable (pre-amplifier)

Rated Power
Max 2V RMS

RMS Power
2V RMS

Dimension (L*W*H)
430 x 100 x 270 mm

Color
Silver/Black

Weight
7.5 kg

Total Harmonic Distortion
<0.5% at 1 kHz

Tone Controls
Bass and Treble control

Frequency Response
50 Hz to 20 kHz (+1/-3 dB)

Input Connectors
XLR, RCA jack

Signal to Noise Ratio
>60 dB (line)

Phantom Power
Available for Mic channels

Mounting Type
Rack mountable (2U)

Output Connectors
XLR, RCA jack

About LBB 1925-10 Bosch Plena System Pre-Amplifier

The Plena system pre-amplifier is a versatile, high performance unit with call and mono BGM(background music). It fulfills a wide variety of publicaddress requirements at a surprisingly low cost. It canprovide dual channel operation for simultaneous callsand BGM for up to six different zones, using two Plenaamplifiers.

Six-zone system pre-amplifier, with single or dualchannel operation

Two input channels for call stations

Universal input for microphone/line, with speechoptimized tone control

Three inputs for BGM selection and music optimizedtone control

Front panel zone selection for BGM and call stationzone selection for calls

High-Performance Pre-Amplification

Engineered for optimal sound quality, the LBB 1925-10 maintains a signal-to-noise ratio of over 60 dB and minimal output noise (<1 mV). It ensures distortion-free audio, making it ideal for demanding PA environments where clarity and reliability are essential.

Flexible Connectivity and Controls

Equipped with XLR and RCA connectors for both input and output, plus dedicated bass and treble controls, this pre-amplifier accommodates a variety of microphones, line sources, and auxiliary devices, allowing users to finely tune audio for their specific setting.

Rugged Build and Rack Mountable Design

Constructed with a durable metal chassis and finished in silver/black, the 2U rack mountable format simplifies professional installations in studios, halls, and AV racks, providing both functional protection and aesthetic versatility.

FAQ's of LBB 1925-10 Bosch Plena System Pre-Amplifier:

Q: How do I connect microphones and auxiliary devices to the Bosch Plena LBB 1925-10 pre-amplifier?

A: You can connect up to six microphones or line inputs using the XLR or RCA jacks, and three auxiliary devices via RCA inputs. Each mic input is equipped with phantom power for condenser microphones.

Q: What are the main benefits of using this pre-amplifier in a PA system?

A: The LBB 1925-10 offers high-fidelity sound with a wide frequency response, low distortion, and effective tone controls. It enables precise audio tailoring, reliable signal amplification, and easy integration into professional audio setups.

Q: Where can the Bosch Plena LBB 1925-10 be installed?

A: This unit is suitable for installation in rack-mounted setups within auditoriums, conference rooms, places of worship, and commercial audio environments due to its standard 2U rack-mountable design.

Q: When should I use the phantom power feature?

A: Phantom power should be activated when using condenser microphones that require external power. It is available on the mic channels of the pre-amplifier.

Q: What process ensures optimal noise control with the LBB 1925-10?

A: Bosch's engineering maintains output noise under 1 mV and a signal-to-noise ratio above 60 dB, ensuring clear audio with minimal interference during operation.

Q: How do the tone controls enhance audio output?

A: The bass and treble controls enable users to adjust the frequency response, allowing customized sound output to suit varied acoustic environments or personal preferences.