Samson CB288 Beltpack Transmitter Instruction Manual

1. Introduction and Overview

The Samson CB288 Beltpack Transmitter is a key component of the Samson Concert 288 Wireless System, designed to provide reliable and high-quality audio transmission for various applications. This compact and durable transmitter offers exceptional performance and ease of use, making it ideal for musicians, presenters, and performers.

This manual provides detailed instructions on the setup, operation, maintenance, and troubleshooting of your CB288 Beltpack Transmitter to ensure optimal performance and longevity.

Figure 1: Front view of the Samson CB288 Beltpack Transmitter. The device is black with the "SAMSON CB288" logo visible on the front. An antenna extends from the top left, and two small connectors are visible on the top right.

2. Key Features

Extended Battery Life: Operates for up to eight hours on two standard AA batteries.
Wide Operating Range: Provides a reliable operating range of up to 300 feet (line of sight).
Specific Frequency Band: Operates within Band I, Channel A: 518-542MHz, ensuring clear and interference-free transmission.
Versatile Input: Features a Mini-XLR (P3) input connector for various microphone and instrument connections.
Optimized Input Impedance: Designed with a 1MOhm input impedance for broad compatibility.
Adjustable Input Gain: Offers a 38dB input gain range, allowing precise level matching for different audio sources.
Durable Construction: Built to withstand the rigors of live performance and regular use.

3. Setup Guide

3.1. Battery Installation

Locate the battery compartment on the rear of the CB288 Beltpack Transmitter.
Slide open the battery compartment cover.
Insert two fresh AA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
Close the battery compartment cover securely.

Note: Always use fresh alkaline or rechargeable AA batteries for optimal performance and battery life. Remove batteries if the unit will not be used for an extended period.

3.2. Connecting a Microphone or Instrument

Identify the Mini-XLR (P3) input connector on the top of the transmitter.
Connect your compatible Samson microphone (e.g., LM10, HS5) or instrument cable to this input. Ensure the connector clicks firmly into place.

3.3. Powering On/Off

To power on, press and hold the power button located on the top of the transmitter until the indicator light illuminates.
To power off, press and hold the power button again until the indicator light turns off.

3.4. Frequency Selection and Pairing

The CB288 transmitter is pre-set to Band I, Channel A (518-542MHz). For proper operation, ensure your Concert 288 receiver is also set to the corresponding frequency band and channel.

Refer to your Concert 288 receiver's manual for specific instructions on channel selection and pairing procedures.
Typically, the receiver will have a scan function to find an available channel, and then a sync function (often via infrared) to pair with the transmitter.
Once paired, the receiver will indicate a stable RF connection.

4. Operating Instructions

4.1. Adjusting Input Gain

The CB288 features an adjustable input gain to optimize the audio level from your microphone or instrument before transmission. This helps prevent distortion and ensures a strong, clear signal.

With the transmitter powered on and connected to your audio source, speak into the microphone or play your instrument at your typical performance level.
Locate the gain adjustment control (usually a small trim pot) on the transmitter. You may need a small screwdriver or a similar tool to adjust it.
Monitor the audio level on your Concert 288 receiver. Adjust the gain control on the transmitter until the receiver's audio level indicator shows a strong signal without clipping (peaking into the red).
A good starting point is to set the gain so that the peak audio levels on the receiver are consistently in the green or amber range, only occasionally touching the red.

4.2. Optimal Placement

For best wireless performance, ensure the transmitter's antenna is not obstructed. Wear the beltpack on your hip or in a position where the antenna has a clear line of sight to the receiver whenever possible. Avoid placing the transmitter directly against metal objects or large body masses that could block the signal.

4.3. Battery Status Indicator

The CB288 Beltpack Transmitter includes an LED indicator that displays battery status. A solid green light typically indicates sufficient battery power. A flashing or red light indicates low battery, and batteries should be replaced soon.

5. Maintenance

Cleaning: Use a soft, dry cloth to clean the exterior of the transmitter. Do not use abrasive cleaners, solvents, or harsh chemicals.
Battery Care: Always remove batteries from the transmitter if it will not be used for an extended period (e.g., more than a few weeks) to prevent leakage and damage.
Storage: Store the transmitter in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
Antenna Care: Handle the antenna with care. Avoid bending or stressing it excessively, as this can affect performance.

6. Troubleshooting

Problem	Possible Cause	Solution
No sound or weak signal	Transmitter not powered on. Low batteries. Transmitter and receiver not paired or on different channels. Input gain too low. Obstruction between transmitter and receiver. Faulty microphone/instrument cable.	Ensure transmitter is powered on. Replace batteries. Verify pairing and channel settings on both transmitter and receiver. Increase input gain on the transmitter. Relocate transmitter or receiver for clear line of sight. Test with a different cable or audio source.
Distorted audio	Input gain too high. Interference from other wireless devices.	Decrease input gain on the transmitter. Scan for a clear channel on your receiver or move away from interfering sources.
Short battery life	Using old or low-quality batteries. Constant use at high power settings (if applicable).	Use fresh, high-quality alkaline or fully charged rechargeable batteries. Ensure the unit is powered off when not in use.

7. Specifications

Model	CB288 Transmitter
Frequency Range	Band I, Channel A: 518-542MHz
Input Connector	Mini-XLR (P3)
Input Impedance	1MOhm
Input Gain Range	38dB
Battery Life	Up to 8 hours (with 2x AA batteries)
Operating Range	300 feet (line of sight)
Product Dimensions	4.6 x 3.2 x 1.6 inches
Item Weight	4 ounces
Manufacturer	Samson
Date First Available	August 28, 2019

8. Warranty and Support

The Samson CB288 Beltpack Transmitter is covered by a Samson 2 Year Limited Warranty. This warranty covers defects in materials and workmanship under normal use.

For detailed warranty information, technical support, or service inquiries, please visit the official Samson website or contact their customer support. You can often find FAQs, driver downloads, and service center locations on their support pages.

Samson Official Website: www.samsontech.com

For additional resources and product information, you may also visit the Samson Store on Amazon.

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SAMSON CB288 Transmitter

Instruction Manual