EasyManua.ls Logo

LTO PBM8.250/ MKII User Manual

Default Icon
23 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
PBM8.250/ MKII8.500
POWERED BOX MIXER
OWNER'S MANUAL
www.altoproaudio.com
Version 2.0 NOV. 2007
LTO
R
English
Question and Answer IconNeed help?

Do you have a question about the LTO PBM8.250/ MKII and is the answer not in the manual?

LTO PBM8.250/ MKII Specifications

General IconGeneral
Channels8
TypePassive
Inputs8
Outputs2
PowerPassive (no power required)
MaterialMetal

Summary

Safety Precautions and Warnings

General Electric Shock Warnings

Alerts regarding electric shock risk, internal components, and external exposure.

Safe Handling and Disposal

Guidelines for moving equipment safely and proper product disposal.

Hearing Protection Guidance

Information on permissible noise exposure levels and hearing protection.

Product Introduction

Product Features

Input Channel Features

Details on mono, stereo inputs, channel equalization, and auxiliary sends.

Audio Processing and Output Features

Highlights preamps, headroom, feedback control, EQ, effects, recording, and output options.

Amplifier Specifications

Specifies amplifier power ratings for PBM8.250 and PBM8.500 models.

Quick Start Guide

Initial Setup and Basic Operation

Procedure for connecting microphone, setting controls, and connecting speakers for initial use.

Sound Adjustment and Testing

Guidance on adjusting channel and master levels, applying equalization, and monitoring output.

Connecting Stereo Keyboard

Instructions for connecting a stereo keyboard to channel 7/8.

Control Elements

Mono and Stereo Input Channels

Details on mono (1-6) and stereo (7-10) input channels, including MIC/LINE options.

Channel Level and Pan Controls

Explanation of channel level adjustment and panorama (balance) control for stereo imaging.

Control Elements

DSP/FX and Monitor Sends

Describes DSP/FX send and MON/AUX1 pre-fader send controls.

Channel Equalization (EQ)

Explains the 3-band EQ controls (HI, MID, LOW) for input channels.

Input Signal Attenuation (PAD)

Details the 20 dB PAD button for reducing input signal level and increasing headroom.

Control Elements

Master Graphic EQ and Feedback Control

Explains stereo graphic EQs for Main/Monitor and feedback terminator functions.

Monitor Output Level Indicator

Describes the LED display for monitoring the monitor output level.

Control Elements

Master Level Controls and Indicators

Details master monitor/main level controls and corresponding LED level displays.

Phantom Power and Amplifier Mode

Explains the +48V phantom power switch and amplifier mode selection.

Control Elements

Audio Output Jacks

Describes MONITOR, MAIN OUT, HEADPHONE, and AUX2 output jack functions.

Tape and Stereo Connection Jacks

Details STEREO RETURN, TAPE IN/OUT switches and connectors for audio input/output.

Control Elements

DSP Presets and Variations

Explains selection of 16 factory presets and 16 variations for 256 total effects.

DSP Mute, Peak Indicator, and Sends

Details DSP MUTE, PEAK LED, and controls for sending DSP effects to Monitor/Main.

Footswitch Connection for DSP

Describes the socket for connecting an external footswitch to control the digital multi-effect.

Rear Panel Controls

Rear Panel Power Controls

Details the main power ON/OFF switch and AC inlet with fuse holder.

Speaker Output Jacks

Describes the 4-way speakon and 1/4" phone jacks for speaker connections.

Installation and Connection Guide

Initial Setup and Gain Staging

Procedure for setting input/output levels, gain staging, and monitoring for optimal performance.

1/4 Inch Jack Connections

Diagrams and explanations for 1/4" stereo (TRS) and mono (TS) jack connections.

Installation and Connection

1/4 Inch Stereo Insert Points

Details the 1/4" stereo TRS jack for insert points.

XLR Connector Types

Explains 3-pin XLR male plug and line socket for balanced mic/line connections.

Speakon Speaker Connection

Details the Speakon connector for connecting to passive speaker cabinets.

Installation and Connection

Amplifier Mode: Main + Main

Explains using the amplifier in MAIN+MAIN mode for driving two main speaker cabinets.

Amplifier Mode: Main + Monitor

Details using the amplifier in MAIN+MONITOR mode for driving main and stage monitor speakers.

Installation and Connection

Amplifier Mode: Bridge

Explains using the amplifier in BRIDGE mode to drive a single speaker cabinet with combined power.

DSP Preset List

Preset Descriptions and Parameters

Lists all 16 presets with their descriptions and controllable parameter ranges.

Block Diagram

Signal Flow and Component Connections

Illustrates the internal signal paths and connections of the PBM8 mixer.

Technical Specifications

Input Channel and Impedance Specifications

Details input channel specifications, frequency response, distortion, gain, and impedances.

DSP and Main Mix Specifications

Provides specifications for the DSP section and main mix noise levels.

Power Supply and Amplifier Ratings

Lists power supply voltage, consumption, and amplifier output ratings for both models.

Technical Specifications

Fuse Ratings and Physical Dimensions

Specifies fuse ratings for different voltage ranges and physical dimensions of the unit.

Unit Weight

Provides net and gross weight specifications for PBM8.250 and PBM8.500 MKII.

Warranty Information

Warranty Registration and Return Notice

Instructions for warranty registration, product return, and required documentation.

Warranty Terms and Conditions

Outlines the 1-year limited warranty, exclusions, and consumer rights.