Bose Freespace 6201 Manual

The Bose Freespace 6201 is a commercial-grade, multi-channel power amplifier designed for distributed audio systems in commercial and residential applications. It features six independent amplifier channels, advanced protection circuitry, configurable inputs and outputs, and is engineered for reliable, high-quality sound reinforcement in demanding environments. Below are key sections covering safety, features, installation, configuration, operation, and troubleshooting.

Features at a Glance

Key components: Six independent amplifier channels, Input/Output terminal blocks, Status LEDs, Power switch, Cooling fan, Rack-mount ears.

Installation

Unpack and inspect contents. Ensure proper ventilation and rack space.

1. Rack Mounting: Attach included rack ears to amplifier sides using provided screws.
2. Power Connection: Connect the included power cord to the IEC inlet on the rear panel and to a grounded AC outlet.
3. Audio Inputs: Connect balanced line-level audio sources to the INPUT terminal blocks (Channels 1-6).
4. Speaker Outputs: Connect speaker wires to the OUTPUT terminal blocks, observing correct polarity.
5. Remote Turn-On: Connect a 12V trigger wire to the REMOTE terminal if using remote power control.

WARNING! Ensure amplifier is powered off during installation. Use appropriate gauge speaker wire for the run length and impedance. Provide adequate clearance for ventilation.

First-Time Setup

Power on the amplifier; observe startup sequence and LED indicators.

1. Initial Power-Up: Switch the rear panel POWER switch to the ON position. The main Power LED should illuminate.
2. Channel Verification: With no input signal, all channel Signal Present LEDs should be off. Fault LEDs should be off.
3. Input Level Setting: Send a test tone or program material. Adjust source or preamp levels so the amplifier's Signal Present LEDs illuminate steadily during peaks, without the Limit LEDs activating constantly.
4. Speaker Check: Verify audio is present at all connected speakers.

CAUTION! Do not operate the amplifier without proper ventilation. Ensure input levels are set correctly to avoid clipping and potential speaker damage.

Specifications

• Channels: 6 independent channels.
• Amplifier Technology: High-efficiency Class-D.
• Total Harmonic Distortion (THD): <0.05% typical.
• Frequency Response: 20Hz - 20kHz (±0.5dB).
• Signal-to-Noise Ratio: >100dB (A-weighted).
• Input Connectors: Balanced 3-pin Phoenix-style terminal blocks.
• Input Impedance: 20k ohms balanced.
• Output Connectors: Phoenix-style terminal blocks for speaker connections.
• Cooling: Temperature-controlled variable-speed fan.
• Power Requirements: 100-240V AC, 50/60Hz, auto-sensing.
• Rack Height: 2U (3.5 inches / 89 mm).
• Operating Temperature: 32°F to 104°F (0°C to 40°C).

Controls and Connections

Front Panel: Power LED (blue). Rear Panel: POWER switch, IEC power inlet, INPUT/OUTPUT terminal blocks, REMOTE trigger terminal, FAN exhaust.

LED Indicators (Per Channel): - Power (Blue): Illuminates when amplifier is powered on. - Signal Present (Green): Illuminates when an input signal is detected. - Fault (Red): Illuminates if the channel is in protection mode due to overload, short circuit, or thermal issue.

Terminal Blocks: Use a small flat-head screwdriver to secure wires. Inputs are balanced (+, -, GND). Outputs are for speaker connections (+, -).

Configuring the Amplifier

The Freespace 6201 is designed for straightforward operation. Configuration is primarily via physical wiring and source level control.

1. Input Configuration: Each channel is independent. Wire balanced audio sources to the desired channel's input block.
2. Output Configuration: Connect speakers to the corresponding channel's output block. The amplifier is stable into 4-ohm and 8-ohm loads.
3. Remote Turn-On: Apply a 12V DC signal (≥5mA) to the REMOTE terminals to automatically power on the amplifier when the control system is activated.
4. Channel Pairing (Bridging): Not recommended or supported for this model. Use channels independently.

Tip: Label all input and output wires during installation for easy identification and future service.

Operation Modes

The amplifier operates in a fixed-gain mode. Level control should be performed at the source (preamp, mixer, or system controller).

1. Normal Operation: Power LED on. Signal Present LEDs flash with audio signal. Fault LEDs off.
2. Standby (via Remote): When remote trigger voltage is removed, the amplifier enters a low-power standby state. The main Power LED may dim or change color.
3. Protection Mode: If a channel enters protection (Fault LED on), it will mute its output until the fault condition is cleared and the unit is power-cycled.

WARNING! Do not attempt to drive the amplifier into continuous clipping. This can overheat speakers and the amplifier itself.

Protection Features

Comprehensive protection safeguards the amplifier and connected speakers.

• Thermal Protection: If internal temperature exceeds safe limits, the affected channel(s) will mute until the unit cools.
• Short-Circuit Protection: Detects a direct short on the speaker outputs and mutes the channel.
• Overload Protection: Guards against sustained excessive input levels that could cause amplifier clipping.
• DC Fault Protection: Protects speakers from harmful DC voltage at the output.

If protection engages, identify and resolve the cause (overheating, shorted wire, faulty speaker) before powering the unit back on.

Care & Maintenance

Unplug the amplifier before cleaning. Keep vents clear of dust and obstructions.

1. Cleaning: Use a dry, soft cloth to wipe the exterior. Do not use liquid cleaners or aerosols.
2. Ventilation: Periodically inspect and vacuum dust from the intake and exhaust vents to ensure proper cooling.
3. Connections: Periodically check terminal block screws for tightness to ensure secure connections.

CAUTION! Do not block ventilation openings. Do not operate in an enclosed space without adequate airflow. Internal servicing should only be performed by qualified personnel.

Regulatory Information

This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. This Class A digital apparatus complies with Canadian ICES-003. For EU markets, complies with applicable CE directives. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the literature accompanying the appliance.

Copyright © Bose Corporation. Bose and Freespace are trademarks of Bose Corporation. For support, visit www.bose.com or contact Bose Professional support.

Troubleshooting

Reset: Power cycling the amplifier (turning it off and on) will clear temporary fault conditions.

Service: Do not open the chassis. All service must be performed by qualified Bose Professional service personnel. Contact Bose Professional support for assistance.