Owner’s Manual ZT Amplifiers LBA1
IMPORTANT SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER TO QUALIFIED SERVICE PERSONNEL. The lightning flash with the arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Turn clockwise to increase the Bass Adjusts the Channel level 1/4" plug in connection for Instrument LED - Lit when Amplifier is on I N S T R U M E N T INPUT VOLUME GAIN Adjusts level of the Amplifier 2 Turn clockwise to increase the Treble BASS TREBLE REVERB Adjusts the Reverb level 3 1 OFF FEEDBACK CUT M I C R O P H O N E Adjusts the Feedback Cut Microphone 1/4" plug input 1/8" plug in connection for Mp3 Player 1/4" plug connections for the external effects loop / Line Volume MIC I
The LUNCHBOX Acoustic is ZT’s first two-channel amp, with perfect features and tone for the acoustic musician and vocalist. Featuring specially voiced, independent Instrument and Microphone channels, flexible signal I/O, and high-output capability, the easily portable LUNCHBOX Acoustic is truly a performer’s best friend. Like all ZT products, The LUNCHBOX Acoustic is simple and intuitive enough to allow anyone to plug and play without much effort.
The Signal Path: The LUNCHBOX Acoustic has two main channels, one for your acoustic INSTRUMENT and one for your favorite MICROPHONE. The Instrument channel has a standard ¼” jack on the top panel feeding a Hi-Z preamp for tonal compatibility with most acoustic-electric pickups. The Microphone input has two jacks on the rear panel, a standard ¼” and an XLR with switchable 12-volt Phantom Power. These feed a Lo-Z preamp to capture the full dynamics of your microphone.
Initial Setup: When first connecting your LUNCHBOX Acoustic, before power is applied, please be sure to set the controls as follows: • REVERB set to off. (Fully counter-clockwise.) • BASS set to mid-point. (12 o’clock position.) • TREBLE set to mid-point. (12 o’clock position.) • VOLUME set to off. (Fully counter-clockwise.) • GAIN set to mid-point. (12 o’clock position.) • FEEDBACK CUT set to off. (Fully counter-clockwise.) • SPEAKER switch on rear panel set to “Internal” position.
Feedback Cut: The LUNCHBOX Acoustic’s FEEDBACK CUT feature is designed for a quick, simple elimination of feedback. The FEEDBACK CUT is a master control that affects both Microphone and Instrument channels. When FEEDBACK CUT is set to Off, the LUNCHBOX Acoustic delivers it’s normal EQ curves. Positions 1, 2, and 3 target specific frequencies that are common feedback offenders. Each different knob position carves a notch in a different frequency.
The External Speaker Output: There is a ¼” external speaker output connector on the rear of the LUNCHBOX Acoustic, which can be used to power an external cabinet. Please note the following IMPORTANT rules: • The LUNCHBOX Acoustic is not designed to power both internal and external speakers simultaneously. The external speaker output will not operate unless SPEAKER switch is set to External. • This output is fully balanced and high power. Connect it only to a passive speaker cabinet.
• Remember, the LUNCHBOX Acoustic can be loud, and it concentrates a great deal of sound energy into a small area. Unless you are an unusually soft player, you will probably have to engage the pad on your mic. • Using a foam windscreen is also a good idea, since the driver can create bursts of air when driven very hard. Understanding Amplifier Power: Nobody has come up with one number that can fully represent the power capability of a guitar amp.
Specifications Dimensions: (h) 192mm / 7.5” (w) 250mm / 9.8” (d) 196mm / 7.7” Weight: 5.4kg / 12lbs. Output: 200 watts, greater than 130dB @ 1 meter / 3.3’ Voltage: Switchable - 115V / 230V Controls: Top Panel: Dual Channel Volume, Gain, Bass, Treble, Reverb Master Volume , Feedback Cut Rear Panel: Line Out/Headphone Level, Speaker Switch Speaker: 165mm / 6.
Technical Support Technical questions: Email: techsupport@ztamplilfiers.com Telephone: 1-510-356-4077 To obtain service for your ZT product: Your dealer should be your first contact if you experience technical problems with your ZT product. Contact your dealer with a specific description of the problem, and have your purchase receipt available for purchase date proof (this will determine if your product is within ZT’s warranty coverage period).
