Selecting Power Levels
The front-mounted selector switch is used to set the appropriate power level or impedance for your system. Using a small flat-blade screw- driver, turn the knob until the slot points to the power level you require.
70V/100V SYSTEMS
Both power setting scales for 70V and 100V sys- tems are labeled on the speakers. On the 100V scale, the last position clockwise is marked with
a
(not available) symbol. Do not use this posi- tion in 100V systems.
16Ω SYSTEMS
The fully counterclockwise position of the setting switch is the 16-ohm position.This setting is suitable for use with low-impedance amplifiers that typically support 4- or 8-ohm speakers.The speaker’s higher, 16-ohm impedance makes it easier to combine multiple speakers into series - parallel networks while keeping the total system impedance at a level suitable for low-impedance amplifiers.
25V SYSTEMS
The OPS1 will operate on 25V systems, but at reduced power levels. The chart to the right shows the conversion from a 70V power setting to the actual 25V power level.
25V Conversion Table
| 32W | 4W | |
70VSetting | | | |
16W | 2W | 25VPower |
| |
2W | 1/4W |
| 8W | 1W | |
| 4W | 1/2W | |
| | | |
| 1W | 1/8W | |
| | | |
| 16Ω | 39W | |
| | | |
Accessory
CK10 (CABLE KIT, 10’)
The CK10 is a 10-foot cable with one looped end, a forged eye bolt (with 1/4-20" x 1/2" thread), and an adjustable cable clamp. It is suitable for use as a drop cable or safety cable.
