Heritage SVT-CL Bass Guitar Amplifier

The Rear Panel continued

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16.POLARITY: Place this switch in the position that provides the least electrical buzz from the unit.

17.BIAS SECTION: These two controls and sets of LEDs allow the user to properly bias the power amp. See “Setting Tube Bias” on page 9 for a complete description of how to use this section.

18.SLAVE OUT: This jack receives the same signal that is being sent to the power amp. It is useful for powering another amp (slave) from this unit’s preamp.

19.BALANCED OUT: This XLR jack is the output at the power amp in. Thus, it will include any processing done in the Preamp Out/Power Amp In loop. This signal may be used to feed an external power amplifier, mixing console or house PA system.

20.POWER AMP IN: This jack connects directly to the internal power amp for use with an external preamp. When using an external source, connect the OUTPUT of the source to this jack using a shielded instrument cable to feed the signal into the power amp section. The internal signal is disconnected when a plug is inserted into this jack.

21.PREAMP OUT: This jack is a direct post master preamp output for use with an external power amp. Connect the external amp’s input to this jack using a shielded instrument cable.

22.IMPEDANCE SELECTOR: Use this switch to match the output impedance of the amp to the speaker(s) being used (2 or 4 ohms). For help in deciding the total impedance of your system, consult the chart below.

Cabinet

Number of

Total

Impedance

Cabinets

Impedance

2 ohms

1

2 ohms

4 ohms

1

4 ohms

4 ohms

2

2 ohms

8 ohms

2

4 ohms

8 ohms

4

2 ohms

23.SPEAKER OUTPUTS: Two 1/4” output jacks and one Speakon® output jack supply speaker-level power to the cabinet. The rated power output is 300 watts rms into 2 or 4 ohms.

The two identical outputs are wired in parallel, and you can use either one, or use both. Make sure the total speaker impedance load is 2 ohms or greater.

Use speaker cables with Speakon® or 1/4" TS ends to make the connections. Do not use instrument cables as they may overheat.

NOTE: In some areas, 1/4” speaker jacks are not appropriate for use on amplifiers with high output power levels. For this reason, use the Speakon® jack instead.

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