Bose 135 Series 2 Manual

The Bose 135 Series 2 is a high-performance speaker system designed for superior audio reproduction, featuring advanced driver technology, a built-in amplifier, and versatile connectivity options. It supports multiple input sources, includes tone controls for precise audio adjustment, and is engineered for both home audio and professional applications. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Audio Adjustment 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-excursion woofer, tweeter, built-in amplifier, Input selector, Volume control, Tone controls, Protection circuitry.

Feature	Description
Woofer	High-excursion driver for deep bass response
Tweeter	Precision driver for clear high frequencies
Built-in Amplifier	Integrated power amplifier for each driver
Input Selector	Switch between multiple audio sources
Volume Control	Master volume adjustment knob
Tone Controls	Bass and treble adjustment knobs
Protection Circuitry	Prevents damage from overload or overheating
Input Connectors	RCA and 3.5mm audio input jacks
Power Switch	Turns system on/off
Indicator Light	Shows power status and protection mode

Installation

Unpack and inspect contents. Place on stable surface away from heat sources.

Position speakers: Place left and right speakers at ear level, angled toward listening position.
Connect audio sources: Use RCA cables or 3.5mm cable to connect to audio source.
Connect power: Plug power cord into AC outlet.
Secure connections: Ensure all cables are firmly connected.

WARNING! Do not place near water or moisture. Ensure proper ventilation around amplifier section.

First-Time Setup

Power on system; verify all connections.

Select input source: Turn INPUT SELECTOR to desired source (AUX, CD, etc.).
Set volume: Turn VOLUME knob to minimum before playing audio.
Adjust tone: Set BASS and TREBLE controls to neutral (12 o'clock position).
Test audio: Play audio source and adjust volume to comfortable level.

CAUTION! Avoid turning volume to maximum immediately to prevent speaker damage.

Specifications

Speaker Type: 2-way bass reflex system.
Woofer Size: 5.25 inches.
Tweeter Size: 1 inch soft dome.
Frequency Response: 55Hz - 20kHz.
Amplifier Power: 50 watts per channel (RMS).
Inputs: RCA stereo, 3.5mm stereo jack.
Controls: Volume, bass, treble, input selector.
Power Requirements: 120V AC, 60Hz.
Dimensions: 10" H x 7" W x 8" D per speaker.

Controls and Settings

Front panel controls: POWER switch, INPUT SELECTOR, VOLUME, BASS, TREBLE.

Rear panel: RCA INPUT jacks, 3.5mm INPUT jack, AC power connector.

Volume: Adjusts overall output level. Bass: Boosts or cuts low frequencies. Treble: Boosts or cuts high frequencies. Input Selector: Chooses between AUX, CD, TUNER inputs. Power: Turns system on/off (indicator shows status).

Connecting Devices

Audio Sources: CD player, tuner, computer, smartphone, tablet.

Turn off system before connecting devices.
Connect RCA cables: Red/white plugs to matching colored jacks.
Connect 3.5mm cable: Plug into 3.5mm jack for portable devices.
Select corresponding input on selector switch.

Tip: Use high-quality cables for best audio performance.

Audio Adjustment

Customize sound to match room acoustics and personal preference.

Bass adjustment: Turn BASS knob clockwise to increase, counterclockwise to decrease.
Treble adjustment: Turn TREBLE knob to brighten or soften high frequencies.
Balance: System maintains proper stereo balance automatically.
Volume matching: Adjust volume based on source material and listening environment.

WARNING! Avoid extreme bass boost at high volumes to prevent distortion.

Advanced Features

Protection Circuitry: Automatically engages if amplifier overheats or detects overload. Indicator flashes red when protection is active. Allow system to cool before resuming operation.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Use compressed air to remove dust from driver surfaces.

CAUTION! Do not use liquids or abrasive cleaners. Do not attempt to open speaker enclosures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Bose Corporation; all rights reserved. For support, visit www.bose.com or contact 1-800-999-2673.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Power/connections	Ensure power is on; check input selector; verify cable connections.
Distorted sound	Overload/volume	Reduce volume; check source for distortion; adjust tone controls.
One speaker not working	Cable/balance	Check cable to affected speaker; ensure proper connection at both ends.
Protection light flashing	Overheating/overload	Turn off system; allow to cool; reduce volume when restarting.
Hum or buzz	Ground loop/interference	Ensure proper grounding; move away from interference sources; use shielded cables.

Reset: Turn off system, unplug for 60 seconds, then restart.

Service: 1-800-999-2673; www.bose.com