Krell Industries MASTER REFERENCE SUBWOOFER - Manual (Page 41)

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C. Choosing Stereo, LFE, or Stereo/LFE
Your Master Reference Subwoofer can operate in stereo mode, low frequency effect
(LFE) mode, or stereo/LFE mode. For optimum subwoofer performance, Krell
recommends using the stereo/LFE combination.
The connections and configurations described above in Connecting the Master
Reference Subwoofer to Your System and Configuring the Programmable
Electronic Crossover connect and configure your subwoofer to operate in stereo
mode. To add the LFE enhancement, follow these steps:
1. Make sure the cable from the sub output on your processor is connected to the
LFE input (17, 18, or 19) on the Master Reference Subwoofer.
2. Activate the LFE input, using the menu function.
3. Press the menu key (37).
4. Use the adjust keys (43) to select the LFE menu. The front panel display (4)
shows LFE ON .
5. Use the adjust keys to select the preferred LFE setting. Options are:
LFE ON The LFE input is enabled. If you choose this setting, Krell
recommends saving it using the Theater preset (30).
LFE OFF The LFE input is disabled.
LFE AUTO The LFE input is controlled by the LFE 12 VDC (12 V trigger)
input. If you choose this option, Krell recommends saving it
as part of the listening room setup on your surround processor.
You must connect a 12 V trigger cable.
6. Press the enter key to set the selection and return to the main menu.
7. Press the menu key to exit the menu mode.
Notes
To confirm that the Master Reference Subwoofer output is operational, activate the noise
generator for the sub output of your surround sound preamplifier/processor.
Krell recommends configuring one of the triggers on the Home Theater Standard to turn off the
LFE when the surround processor is in stereo mode, to avoid generating unwanted noise.
D. When to Use LFE Only Option
Use the LFE only option, without stereo, if you wish to bypass the programmable
electronic crossover.