Page 3 - Contents
Contents INTRODUCTION ............................................................................................................................................................................................ 4 Safety Instructions ......................................................................
Page 4 - Introduction
Introduction This manual covers installation for both the CAM8 and CAM8PRO. They were manufacturedto ensure the highest quality audio signal production and control, while still incorporating sim-ple-to-use features. This manual is designed to familiarize you with the features of your new Bogen CAM8-...
Page 5 - Safety Instructions; Grounding; - Make sure both the mixer and the devices connected to it are; Power Supply; - Use only the power supply provided or one that meets the; Cords and Cables; - Route all cords and cables so that they will not be tripping
Safety Instructions Bogen’s CAM8-Series mixers are electrical equipment, so take all the precautions usuallytaken when installing and using electrical equipment (see inside front cover). To protect boththe users and the equipment, pay particular attention to: • Grounding - Make sure both the mixer a...
Page 6 - Quick Start; Unpack and Connect; Rack Mounting: To mount the CAM8 and CAM8PRO to a; Power and Set Up; B. Turn volume controls down, then power up mixer and amplifier.; Fine Tuning
Quick Start 1 . Unpack and Connect (See page 11 for more details). A. Check mixer for shipping damage. Rack Mounting: To mount the CAM8 and CAM8PRO to a 1 9” rack, lift the unit up to the front of the rack and secure it to the front of the rack with the necessaryscrews (not included with this unit)....
Page 7 - Panel Descriptions; CAM8 Front Panel; Channel Volume Control Knob; Helps eliminate low frequency noise (; Main Output Volume Control Knob; Controls the output signal volume of the main bus.; Auxiliary Output Volume Control Knob
Panel Descriptions CAM8 Front Panel 1 . Main/Auxiliary Bus Selector (one per channel) A 4-position switch which selects destination of channel input. Input can berouted to: a) the main bus (M-up, A-down); b) the auxiliary bus (M-down, A-up- shown at right); c) both the main and auxiliary bus (both u...
Page 8 - CAM8PRO Front Panel
CAM8PRO Front Panel 1 . Main/Auxiliary Bus Selector (one per channel) A 4-position switch which selects destination of channel input. Input can berouted to: a) the main bus (M-up, A-down); b) the auxiliary bus (M-down, A-up-shown at right); c) both the main and auxiliary buses (both up); or d) neith...
Page 9 - CAM8/CAM8PRO Rear Panel; . Ground Connection on Rear Panel; Mixer power supply input. Accepts a 4-pin DIN connection from a; Phantom Power Switch; When activated, supplies 30V DC power to all inputs set to mic level.; Auxiliary Bus Output; Balanced connection to main output bus.
CAM8/CAM8PRO Rear Panel 1 . Ground Connection on Rear Panel Access to ground. 2. AC Power Jack Mixer power supply input. Accepts a 4-pin DIN connection from a 1 8V CT 1 .5 Amp trans- former (uses approximately 500 mA). 3. Phantom Power Switch When activated, supplies 30V DC power to all inputs set t...
Page 10 - Helpful Hints; Fluorescent lights
Helpful Hints Electrical equipment operates best in a clean, dry, well-ventilated environment free of vibra-tion and electromagnetic fields. The following are some guidelines to achieve optimal per-formance. Avoid placing the mixer and cables near heat sources. Be particularly aware of other audioeq...
Page 11 - Installation; before you; Rack Mounting: To mount CAM8 and CAM8PRO to a; Input Pad Microphone/Line Switch; Page
Installation Note: Take the mixer out of the box and inspect for shipping damage. If there is obvious physical damage to the outside of the mixer, contact the supplier of the mixer before you begin installation . Rack Mounting: To mount CAM8 and CAM8PRO to a 1 9” rack, lift the unit up to the front ...
Page 13 - Operation; Input Gain/Trim Control
Operation The primary goal when establishing the gain settings of the mixers is to have each channeloperating at the maximum gain without clipping, while leaving adequate headroom on the vol-ume control knob. The channel Input Gain/Trim Control ( 1 ) on the rear panel of the mixers directly controls...
Page 14 - Troubleshooting Gain Structure; If channel clipping occurs; o’clock position and increase; If channel volume is too high
Troubleshooting Gain Structure If the procedure followed to this point does not give satisfactory results, follow the appropriate adjustment sequence below: If channel clipping occurs If the signal is clipping or producing audible distortion, the gain is too high. Reduce the InputGain/Trim Control (...
Page 15 - Recommended Input Wiring Methods; Balanced Source to Balanced Input - Method
Recommended Input Wiring Methods These are the best ways to connect sources to the mixer.The mixer input is always balanced.From the drawings below choose the wiring method for your input device (either balancedor unbalanced). Balanced Source to Balanced Input - Method 1 (Normal ) Shown below is the...
Page 16 - To remove excessive bass from an individual channel, press the; Low Cut Switch; This feature helps eliminate low frequency noise (signals of; Phantom Power; If a condenser microphone(s) is not independently powered, press; Phantom Power Switch
Fine Tuning Low Cut Switch To remove excessive bass from an individual channel, press the Low Cut Switch ( 1 ) for that channel. This feature helps eliminate low frequency noise (signals of 1 50 Hz and below, such as back- ground rumble from ventilation systems, etc.) and is used primarily with mic-...
Page 18 - Special Features Activation; Note
Special Features Activation The CAM8-Series mixers have several built-in features which are easily activated by makingadjustments inside the mixer chassis. Changing the selection of all built-in features requiresonly the correct placement of internal jumpers or varying the settings of an internal po...
Page 19 - Jumper Options
Jumper Options Changing Jumper Settings To change a jumper setting, remove the ten screws secured to the top of the mixer. Afterremoving the top of the mixer, locate the jumper to be changed by referring to the drawingon page 1 8. Jumpers are included from the factory in positions: J2, J 1 7, J 1 8,...
Page 20 - Linking; Simple Linking; For example, two mixers can be linked as a
Linking CAM8-Series mixers can be linked in several ways. The two principal ways of linking the mix-ers are Simple and Complex Linking. Simple Linking is the expansion to more than 8 inputs by connecting two 8-channel mix- ers via the auxiliary bus. Simple Linking is the “daisy-chaining” of multiple...
Page 22 - Complex Linking
Complex Linking Complex Linking allows multiple mixers to produce two separate mixes from the same setof inputs.The most common complex linking application is shown below.This method can alsobe used to implement a “mix minus” application. This method (CAM8PRO only) creates two separate mixes. Both d...
Page 23 - AC Power Connection; This mixer is powered by an; AC Power Jack; on the rear panel are as shown in the following figure.; Technical Support
AC Power Connection This mixer is powered by an 1 8 Volt, 1 .5 Amp center-tapped transformer (supplied). If anoth- er AC supply is used, it should be of equal voltage and have at least a 2 1 Volt-Amp rating. The details of the AC Power Jack on the rear panel are as shown in the following figure. Tec...
Page 24 - Troubleshooting Tips; Check the wall outlet.
Troubleshooting Tips NO POWER Check the connections between the mixer and the power supply and the external AC powersupply. Examine the 4-pin connector as shown on page 23. Check the wall outlet. NO SOUND • Make sure the MIC/Line switch is in the proper position. (This is the most likely cause.) • M...
Page 25 - Glossary
Glossary Auxiliary Input - Accepts only a balanced, line-level input (unlike the 8 channels); the auxil- iary input has no volume control. Compression Ratio - The ratio of the output level above the threshold level to the input level above the threshold. Compression Threshold - The volume level, in ...
Page 26 - Technical Information; SPECIFICATIONS
Technical Information SPECIFICATIONS Signal-to-Noise Ref +26 dBV @ 54 dB sys gain = 90 dB MIC Pre-amp Equivalent Input Noise - 1 29 dB @ 1 50 ohm, 20 Hz to 20 kHz Maximum Voltage Gain 96 dB Frequency Response ± 1 dB from 20 Hz to 20 kHz +0, -3 dB from 1 0 Hz to 30 kHz Crosstalk (adjacent channels) b...
Page 27 - Auxiliary Circuits
Auxiliary Circuits Bar Graph - 1 8, - 1 2, -6, -3, 0, +3, +6, + 1 2 VU (0 VU = +4 dB)Average or Peak readingPeak reading per DIN spec. 45406( 1 .7 ms attack, 650 ms decay) Compressor/Limiter Adjustment Range +20 dB to -40 dB Compressor/Limiter Ratio Adjustment Range 0 to 1 00% Low Cut Filter 1 2 dB/...
Page 28 - Block Diagram
Block Diagram Page 28 of 32 20 dB 20 dB Headphone Aux output +4 dB Peak Ave Bar Graph Main Line/mic output J21 J20 J23 J22 Main Meter Aux PAD 20 dB Line/mic M A Pre-gain RP 23 J1 J2 Sum volume Aux 20 dB Hi Pass 150Hz In/out INPUT 1 Ratio Threshold A M Control Sum Main J17 Limiter 20 dB 150Hz Hi Pass...
Page 29 - Warranty
Page 29 of 32 Warranty The CAM8 and CAM8PRO are warranted to be free from defects in material or workmanship for two (2) years from the dateof sale to the original purchaser. Any part of the product covered by this warranty that, with normal installation and use, becomesdefective will be repaired or...
