ETI Sound Systems, INC US-4000 Front Panel Controls, Blue illuminated strips, Signal Indicators

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US SERIES AMPLIFIERS

THE BEAUTY OF POWER

FRONT PANEL CONTROLS

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1.Rack Mounting pointS Points to bolt your amplifier into a rack.

2.Air Vents

US-Series amplifiers are cooled by two rear-mounted fans (US-1200 has one fan) and open cell foam filters mounted behind the front vents.

CAUTION: Never block the front or rear vents and keep them clean at all times.

NOTE: Periodically clean the foam filters using a vacuum cleaner to avoid dust from blocking the vents. If the filters become too dusty, it may decrease your amplifier’s ability to dissipate and remove heat efficiently. If the filters become too dusty and too difficult to clean externally, you can access the filters and remove them for cleaning. Refer to the cleaning procedure later in this manual.

3.Blue illuminated strips

These two blue illuminated strips glow when your amplifier is turned ON.

4.Channel 1 and channel 2 LEVEL controls

Use these 21-position detented controls to adjust the output levels of Channel 1 and Channel 2. When the LEVEL controls are set fully counter-clockwise, the signal is attenuated by more than 80dB (marked -∞). When the LEVEL controls are set fully clockwise, the

signal is amplified with maximum gain. When the LEVEL is set fully clockwise, the amplifier produces its rated output power at a 4 Ohm load with +4dBu (1.23Vrms) signal applied to the inputs. All detents are marked in dBs showing the attenuation of

the output signal with reference to the fully clockwise position.

NOTE: In PARALLEL MONO mode, both of the Channel 1 and Channel 2 LEVEL controls are used to adjust the signal level for their respective channels. The signal should be routed only to the Channel 1 input in this mode.

NOTE: In BRIDGED MONO mode, only the Channel 1 LEVEL control is used to adjust the signal level. The signal should be routed only to Channel 1’s input in this mode.

5.SIGNAL Indicators

These green LEDs will illuminate indicating that a signal is being received through the input and that the signal is being amplified. There are three LEDs on each channel: SIGNAL, -20dB and -10dB.

6.CLIP Indicators

These red LEDs will illuminate at the clipping threshold. If the CLIP LEDs light frequently, you are overloading the amplifier, causing gross distortions on the outputs. Heavy clipping is bad for both your speakers and amplifiers and should be avoided.

8 B-52 US Series Professional Power Amplifiers - Instruction Manual

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Contents US-1200 US-1800 US-3000 US-4000 Contents Unpacking and Installation Welcome to the B-52 FamilyImportant Information WHAT’S the Meaning of THIS?Important Safety Precautions Power Ratings AT a Glance US-1200 US-1800 US-3000Amplifier Features Signal Indicators Clip IndicatorsFront Panel Controls Blue illuminated stripsProtect Indicators AC Power SwitchInput connectors Link connectorsHPF High Pass Filter switch Rear Panel ControlsLimiter switch US-3000 and US-4000 models only Binding Post outputsSpeakon output connectors Rear Panel ControlsAC input ProtectionCircuit breaker Clip Limiters US-Series amplifiers have built Setting UP Your US-SERIES Amplifier Bridged Mono Mode Stereo ModeParallel Mode Connecting Your Speakers SPK- to PIN Wiring Specifications US-1200 US-1800 US-3000 US-4000Limited Warranty Incidental or Consequential DamagesBeauty of Power Beauty of Power Professional

US-3000, US-4000, US-1800, US-1200 specifications

ETI Sound Systems, INC offers a range of powerful audio solutions designed to meet various sound reinforcement needs. Among their prominent offerings are the US-1200, US-1800, US-3000, and US-4000 models. Each model showcases a blend of advanced technologies and robust characteristics aimed at delivering high-quality sound.

The US-1200 is an entry-level model that makes waves in the audio landscape with its compact design and impressive performance. It features a lightweight cabinet, making it easy to transport and set up for events. The system delivers 1200 watts of peak power, ensuring clear and powerful sound reproduction. It includes a built-in amplifier, meaning users can connect their sound sources directly without needing additional equipment. The US-1200's integrated protection circuitry prevents damage from overloads, ensuring longevity and reliability.

Moving up the line, the US-1800 offers enhanced capabilities, boasting an output of 1800 watts. This model incorporates advanced digital signal processing, allowing for tailored sound adjustments to suit various environments. It features Bluetooth connectivity for wireless audio streaming, providing users the flexibility to play music from devices without the complications of cables. The US-1800 is ideal for mobile DJs and small venues looking for a powerful yet portable solution.

The US-3000 brings even greater power and sophistication to the table with 3000 watts of peak performance. It features advanced crossover technologies, optimizing the sound output across different frequency ranges. This model is designed for larger events, ensuring that every corner of the venue can experience high-quality audio. With multiple input options, including XLR and RCA, the US-3000 can accommodate various audio sources, making it a versatile choice for professional setups.

Lastly, the US-4000 stands as the flagship model in the ETI lineup. It boasts an astonishing 4000 watts of peak power and features cutting-edge audio processing technology. This powerhouse is equipped with a sophisticated feedback elimination system, ensuring clarity even at high volumes. The US-4000 is designed for large-scale events and professional installations, providing unparalleled reliability and sound quality. Its rugged construction is built to withstand the rigors of touring and extensive use.

In summary, ETI Sound Systems, INC has curated a diverse lineup with the US-1200, US-1800, US-3000, and US-4000, catering to different audio needs while incorporating advanced technologies that ensure exceptional sound quality and performance.
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