Jamo Sub 800 Manual

The Jamo Sub 800 is a powerful 8-inch powered subwoofer designed to enhance your home theater or audio system with deep, rich bass. Featuring a built-in 150W amplifier, adjustable crossover frequency, phase control, auto on/off functionality, and multiple input options. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 8-inch long-throw woofer, built-in 150W amplifier, adjustable controls, multiple input options.

Feature	Description
Power Amplifier	150W RMS built-in amplifier
Woofer Size	8-inch long-throw driver
Crossover Frequency	Continuously adjustable 50-150Hz
Phase Control	0/180 degree phase switch
Auto On/Off	Automatic power management
Inputs	Line-level RCA, Speaker-level inputs
Outputs	Line-level output for daisy-chaining
Volume Control	Adjustable gain control
Power Supply	Universal 100-240V AC, 50/60Hz
Enclosure	Bass reflex design with front-firing port

Installation

Unpack and inspect contents. Choose optimal placement for best bass response.

1. Position subwoofer: Place in corner for maximum output or near main speakers for better integration.
2. Connect audio sources: Use RCA cables for line-level connection from receiver/amplifier.
3. Connect speaker wires: For speaker-level connection from amplifier speaker outputs.
4. Plug into AC power: Use included power cable.

WARNING! Subwoofer contains strong magnets; keep away from CRT monitors and credit cards. Ensure proper ventilation around amplifier section.

First-Time Setup

Connect power and audio sources; adjust controls for optimal performance.

1. Set volume: Start with volume at 12 o'clock position.
2. Adjust crossover: Set to match your main speakers' frequency response.
3. Set phase: Switch between 0 and 180 degrees for best bass integration.
4. Test auto on/off: Subwoofer should power on automatically when signal detected.

CAUTION! Avoid placing subwoofer directly against walls; maintain minimum 2-inch clearance for proper ventilation.

Specifications

• Driver Size: 8-inch long-throw woofer
• Amplifier Power: 150W RMS
• Frequency Response: 35-150Hz (±3dB)
• Crossover: Continuously adjustable 50-150Hz
• Inputs: Stereo RCA line-level, Speaker-level terminals
• Outputs: Line-level RCA output
• Phase Control: 0/180 degree switch
• Auto On/Off: Signal-sensing power management
• Power Supply: 100-240V AC, 50/60Hz
• Dimensions: 14.5" H x 12.5" W x 16" D
• Weight: 28 lbs

Controls and Settings

Rear panel controls: Volume, Crossover Frequency, Phase Switch, Power Mode.

Volume Control: Adjusts subwoofer output level. Start at 12 o'clock position.

Crossover Frequency: Continuously adjustable from 50-150Hz. Set to blend with main speakers.

Phase Control: 0/180 degree switch for proper bass integration with main speakers.

Power Mode: Auto/On/Off. Auto mode powers subwoofer on when signal detected.

Inputs: Line-level RCA (L/R), Speaker-level inputs for connection flexibility.

Connecting Devices

Multiple connection options: Line-level from receiver, Speaker-level from amplifier.

1. Line-level connection: Use RCA cable from receiver's subwoofer/LFE output.
2. Speaker-level connection: Connect speaker wires from amplifier to subwoofer inputs.
3. Daisy-chain: Use line-level output to connect additional subwoofers.
4. Power connection: Plug into grounded AC outlet.

Tip: For home theater use, connect to receiver's LFE/subwoofer output for best performance.

Operation

Proper operation ensures optimal performance and longevity.

1. Power on: Switch to Auto or On position.
2. Volume adjustment: Set to blend with main speakers without overpowering.
3. Crossover setting: Match to main speakers' low-frequency capability.
4. Phase adjustment: Switch between 0 and 180 for strongest bass at listening position.
5. Auto mode: Subwoofer automatically powers on when audio signal detected.

WARNING! Do not operate at maximum volume for extended periods. Allow break-in period for optimal performance.

Placement Guidelines

Subwoofer placement significantly affects bass performance.

• Corner placement: Maximizes bass output and room gain
• Near-field placement: Provides more direct, localized bass
• Front placement: Best integration with main speakers
• Crawl test: Place subwoofer in listening position and crawl to find bass sweet spot

Note: Experiment with placement to find optimal position for your room.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth for exterior. Avoid liquids and abrasive cleaners.

CAUTION! Do not open enclosure. No user-serviceable parts inside. Refer servicing to qualified personnel.

Regulatory Information

CE compliant. RoHS compliant. FCC Part 15 Class B digital device. Copyright © Jamo. For support, visit www.jamo.com or contact your local authorized dealer. Manufactured under license from Jamo International A/S.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Power/connections	Check power connection; verify audio input connections; ensure volume is turned up.
Distorted sound	Overloading/clipping	Reduce volume level; check input signal level; ensure proper crossover setting.
Hum or buzz	Ground loop	Use ground lift adapter; ensure all components plugged into same power circuit.
Auto on not working	Signal level/settings	Increase input signal level; switch to On position; check power mode setting.
Weak bass	Placement/phase	Experiment with placement; adjust phase control; verify crossover frequency.

Reset: Turn power off and on to reset amplifier circuitry.

Service: Contact authorized Jamo service center; www.jamo.com