Line 6 LowDown LD150 Bass Amplifier User Manual

Introduction

The Line 6 LowDown LD150 is a powerful and versatile bass amplifier designed to provide an incredible array of dialed-in, stage-perfected bass tones. Unlike traditional bass combos that focus solely on volume and clean tone, the LowDown LD150 offers a comprehensive selection of killer bass amp models that cover genres from funk to classic rock and beyond. Its oversized, high-speed power amp ensures exceptional articulation and bottom-end punch, making it ideal for both live performances and studio recording.

This manual provides detailed information on setting up, operating, and maintaining your LowDown LD150 amplifier, ensuring you get the most out of its advanced features and superior sound quality.

A black Line 6 Low Down LD150 bass amplifier, featuring a front-facing speaker grille and a control panel with various knobs and buttons on the top surface. A handle is visible on the top.

Setup

Follow these steps to set up your LowDown LD150 amplifier:

1. Power Connection: Connect the supplied power cable to the AC input on the rear panel of the amplifier and then to a grounded electrical outlet.
2. Instrument Input: Plug your bass guitar into the 1/4-inch INPUT jack on the front panel.
3. Headphones (Optional): For silent practice, connect headphones to the HEADPHONE OUT jack. This will mute the main speaker.
4. CD/MP3 Input (Optional): To jam along with external audio, connect your CD player or MP3 device to the 1/8-inch CD/MP3 INPUT jack.
5. Footswitch (Optional): If using an FBV Express or FBV Shortboard footswitch (sold separately), connect it to the FOOTSWITCH jack for expanded control.
6. Power On: Turn on the amplifier using the POWER switch.

Operating the LowDown LD150

The LowDown LD150 offers intuitive controls for shaping your bass tone. Familiarize yourself with the front panel controls:

• Amp Models Knob: Selects one of the five incredible bass amp models or the Synth model.
• Effects Knob: Selects one of the five essential bass effects.
• Channel Memories: The four programmable channel memories allow you to save and instantly recall your custom sounds. Press and hold a channel button to save the current settings.
• Deep Switch: Engages special tone shaping for supreme fatness and enhanced low-end response.
• Built-in Chromatic Tuner: Activate the tuner to accurately tune your instrument.
• Master Volume: Controls the overall output volume of the amplifier.
• XLR Direct Out: Provides a balanced output for connecting to a mixing console or recording interface, featuring Line 6's exclusive A.I.R. processing for mic'd amp tone.

Amp Models

The LowDown LD150 features five carefully crafted amp models and a unique synth model:

• Clean: Inspired by the Eden Traveler, this model delivers clean, funk, and fusion bass tones with warm lows and punchy highs.
• R&B: Based on a 1968 B-15 Flip Top, this model provides the clean, fat bass tones reminiscent of late 60s and early 70s Motown recordings.
• Rock: Inspired by the '74 Ampeg® SVT®, this model offers the classic, powerful tone of this iconic amplifier.
• Brit: Based on a '68 Marshall® Super Bass, this model delivers the overdriven bass sound characteristic of late '60s British rock.
• Grind: Designed for modern rock, this model combines a distorted SansAmp PSA-1 into an SVT® with a direct clean bass signal, providing an aggressive, clear, and punchy tone.
• Synth: This secret weapon transforms the LowDown into a '70s classic bass synth, delivering incredible tones that track dynamic movements with ease.

Effects Models

The LowDown LD150 includes a critical set of effects essential for any bass player:

• Envelope Filter: Based on a Q-Tron, this effect provides a dynamic and expressive filter, commonly heard in funk and rock music.
• Octaver: Inspired by the EBS® OctaBass®, this effect produces a note one octave below the played pitch, adding a powerful new dimension to your sound.
• Chorus: Based on the T.C. Electronic® Chorus, this is a transparent, smooth, and expressive chorus effect for bass, designed not to reduce low end and particularly effective on fretless bass.

Maintenance

To ensure the longevity and optimal performance of your LowDown LD150 amplifier, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Avoid using abrasive cleaners, solvents, or waxes, as they may damage the finish.
• Storage: Store the amplifier in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
• Ventilation: Ensure proper ventilation around the amplifier to prevent overheating. Do not block the vents.
• Transportation: When transporting the amplifier, use appropriate protective covers or cases to prevent physical damage.
• Power Cord: Regularly inspect the power cord for any signs of damage. If damaged, replace it immediately with an approved cord.

Troubleshooting

If you encounter issues with your LowDown LD150, try these basic troubleshooting steps:

• No Power: Ensure the power cable is securely connected to both the amplifier and a working electrical outlet. Check the power switch position.
• No Sound: Verify that your instrument cable is properly connected to both your bass and the amplifier's input. Check the Master volume knob and ensure it is not set to minimum. Confirm that the speaker cable (if applicable) is securely connected.
• Distorted Sound: Check your instrument's output level and the amplifier's input gain. Reduce the gain if the sound is excessively distorted. Ensure no effects are engaged that might be causing unwanted distortion.
• Hum or Noise: Ensure all cables are properly shielded and connected. Try plugging the amplifier into a different electrical outlet to rule out ground loop issues.
• Controls Not Responding: If the amplifier seems unresponsive, try turning it off and then on again.

If the problem persists after attempting these steps, please contact Line 6 customer support or an authorized service center for further assistance.

Specifications

Warranty and Support

For information regarding warranty coverage, product registration, or technical support for your Line 6 LowDown LD150 amplifier, please refer to the warranty card included with your purchase or visit the official Line 6 website. You may also contact the retailer from whom you purchased the product for assistance.

Please retain your proof of purchase for any warranty claims.