OEM Systems is no longer operating. Some products can still be purchased from AudioSource in Portland Oregon. Please call 775-746-3432 or 877-715-5439.
The AW-IMP100WV 100 watt outdoor in-wall impedance matching volume control can be configured to maintain a safe system load when multiple controls and speakers are connected. These controls utilize autoformers to efficiently transfer the power from amplifier to speaker. Autoformers are the electrical equivalent to a gearbox in an automobile with each of the 12 volume positions a different gear. It is common to use these controls with outdoor landscape speakers.