The VR 100K-4 Motorized Volume Control is a sophisticated audio component designed for high-end multi-channel or balanced stereo applications. This unit features an integrated DC motor for seamless remote-controlled operation alongside manual tactile adjustment. By combining a high-impedance 100K ohm resistance with a multi-gang configuration, this potentiometer is the ultimate solution for professional audio engineers and audiophiles seeking automated precision.
Automated DC Motor Integration: Features a rear-mounted DC motor that provides smooth, low-noise motorized rotation for remote-controlled volume leveling.
4-Channel (4-Gang) Capability: Designed with a multi-gang terminal array, allowing for synchronized control over four separate audio channels, perfect for balanced stereo or surround sound applications.
High-Impedance B100K Rating: Rated at 100K ohms (100KΩB-2), providing excellent signal-to-noise ratios for high-fidelity pre-amplifier stages.
Dual-Operation Control: Engineered with an internal clutch that allows for manual knob adjustment without damaging the motor drive system.
Precision Metal Shaft: Equipped with a 16mm knurled and split metal shaft for a secure, professional fit with high-quality push-on or set-screw knobs.
Shielded Construction: Housed in a durable metal casing that provides essential electromagnetic shielding for sensitive audio signals.
Model: VR 100K-4 (Motorized).
Resistance Value: 100K Ω.
Taper: Type B (Linear).
Motor Type: Low-voltage DC.
Mounting: PCB through-hole terminals and threaded panel-mount collar.
Identification: Labeled with "100KΩB-2" and "PRM" branding for technical verification.
Balanced Stereo Preamps: Ideal for controlling volume in balanced audio circuits where two gangs are required per channel.
High-End Home Theater: The primary component for adding motorized remote functionality to custom-built surround sound processors.
Studio Automation: Used in professional mixing consoles requiring automated "fader" or "knob" recall via external motor drivers.
What is the difference between the 100K-2 and 100K-4 models? While both use 100K resistance, the 100K-4 features a more complex multi-terminal gang setup designed to handle four channels (or two balanced channels) simultaneously, whereas the 100K-2 is built for standard 2-channel stereo.
What voltage is required for the motor? The integrated DC motor typically operates on a 3V to 6V DC range. It requires an external motor driver or H-bridge circuit to facilitate clockwise and counter-clockwise movement.
Can I use this to replace a standard non-motorized volume knob? Yes, provided your chassis has the significant extra depth required for the motor housing. This upgrade is perfect for projects moving from manual-only to remote-capable systems.
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