Adjustment for Load Impedance
Note: Adjustment for load impedance should only be done by an authorized Sonic Frontiers dealer, distributor or service technician. Any damage to the amplifier as a result of a person(s) not authorized by Sonic Frontiers will not be covered under warranty.
Warning: Dangerous voltages exist within this amplifier.
After removing the bottom cover, locate the terminal block for the left channel in the left rear corner.
The nominal speaker load of the amplifier was factory set to the impedance designated on the Voltage/Impedance sticker on the back of the chassis and shipping carton. In the event that you should require different impedance operation, the amplifier can be set to handle 2, 4 or 8 ohm loads. Some experimenting of this setting may be required for speakers which vary considerable in impedance across a frequency range. To change the output setting have your Sonic Frontiers’ dealer follow these steps:
1.Unplug all connections to the power amplifier, namely the AC power supply cord and wait a minimum of 20 minutes for all power supplies to discharge.
2.Place the amplifier on the rear handles so it is upright and the underside is exposed. Using the Phillips screwdriver provided unscrew the bottom panel and remove.
The terminal block for the right channel in the right rear corner.
3. Look for the terminal blocks under the transformer housings which looks like this:
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