If you're in need of a simple and low-cost solution for time aligning speakers in larger rooms or outdoor applications, The Rolls HRD342 digital room/speaker delay unit has exactly what you're looking for. The large delay dial on the front features a range of delay times from 32 to 360 milliseconds, which roughly correlates to the distance in feet to the speakers (32 ms = approx. 32 ft). Insert the HRD432 between the main console output and the amplifiers supplying the delayed signal to the speakers in a passive setup, or connected between the console and the input of the speaker in a powered setup — either way, you're ensuring that the signal is consistent and intelligible to all listeners.
- Balanced XLR input and output
- Level control to make up or add gain
- Mounting designed to fit Rolls RMS270 rack tray or HR31 rack ears