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Model 301B 4-Channel Combiner / Amplifier with Remote Master Volume Control and Mute Function

Full Featured - Easy to Use

Have several radios in your vehicle? Tired of too many speakers? Volume not loud enough? Need to combine multiple audio sources into one speaker? This device solves all of these problems by mixing together the speaker output of up to four radios and then amplifying the result. It is capable of driving from one to several speakers at a power level ten times greater than that provided by a typical mobile radio. As a result the user can clearly listen to any radio at a volume level sufficient for even the most severe conditions. Speaker audio from every radio is heard in every speaker. It is ideally suited for multiple radio installations in fire engines, ambulances, and police vehicles.

The master volume control feature gives the user one convenient volume control for all 4 inputs.

The Model 301's mute function is activated by a pushbutton integrated into the volume knob. Simply press the knob to mute the amplifier, and press again to unmute the amplifier. The bi-color LED will change to RED when the mute is activated. When the mute is turned off, a built-in "soft-start" feature will gently ramp the volume back up to the previous level.

Specifications and Features

• 65W @ 2Ω MAX or 45Wrms @ 2Ω (10%THD) CONTINUOUS (typical mobile radio=5W)
• Use with any speaker combination from 2ohm to 16ohm
• 4 transformer isolated inputs-compatible with any radio regardless of make or model
• Individual level control for each input
• Remote turn-on (activation) control
• No audible "pop" or "thump" during turn-on
• RFI/EMI and alternator noise filtering
• Fully Protected Output / Thermal shutdown Protection
• Fault Diagnostics & Power ON Indicators
• CNC Milled Cast-Aluminum Case
• Potted Remote for vibration and moisture resistance.
• Red/Green Bi-Color Status LED on remote with lens for 180 degree viewing.
• Volume knob is knurled aluminum for a quality feel.
• 6' remote cable
• 8-18VDC (12V Nominal) @ 4A MAX
• 91mA Standby Current (unmuted w/ no audio)
• Frequency Response: 30Hz-20KHz
• Amplifier: 4.53 x 3.24 x 1.57" LWH w/o Flanges
• Remote: 2.5 x 2.0 x 1.5" LWH w/o Flanges
• 2 Yr. Warranty

Documentation

• Installation Instructions

• Datasheet