General Precautions And Considerations, Breaker, Speaker Outputs

6. BREAKER

This is a resettable circuit breaker that monitors the amount of current being drawn by the ampliﬁer. Under normal operating conditions, this should never pop. An unusual condition may cause the breaker to pop, such as a mains voltage surge occurring at the same time as a peak ampliﬁer output.

Turn the POWER switch oﬀ, and push the BREAKER button in to reset the circuit breaker. Turn the POWER switch back on and the ampliﬁer should resume normal operation. If the circuit breaker pops again, something probably isn’t right.

•Make sure that the total impedance of the speakers connected to the outputs is 2 ohms or greater (per channel) in stereo mode, or 4 ohms or greater in bridged mode.

•If the breaker pops right away, even with the Level controls turned down and the speakers disconnected, there may be something wrong inside the ampliﬁer. Refer to “Appendix A:

Service Info.”

7. SPEAKER OUTPUTS

You have two options for connecting your speakers: binding posts and Speakon connectors.

Normally, you would use either the binding posts or the Speakon connectors. Since the connectors are wired in parallel (e.g., CHANNEL 1 binding post and Speakon are in parallel, and CHANNEL 2 binding post and Speakon are in parallel), you can connect a speaker to each connector, as long as the total impedance per channel is two ohms or more.

•Two 8 ohm speakers in parallel equals 4 ohms.

•Two 4 ohm speakers in parallel equals 2 ohms.

See “Output Wiring” on page 11 for information on output connection wiring.

8. INPUTS

The Juice ampliﬁers give you two options for connecting the input signal — XLR input connectors and 1/4” TRS (Tip-Ring-Sleeve) connectors. These inputs are in parallel, and are identical, electrically speaking. You can connect either a balanced or an unbalanced signal here.

Since these two inputs are in parallel, you shouldn’t connect more than one source to the INPUT 1 or INPUT 2 jacks. However, you can use the unused input jack as a “Thru” connector, to daisy-chain the signal to another ampliﬁer. See “Input Wiring” on page 10 for information on input connection wiring.

9. SUBSONIC FILTER

Turn this switch on to engage a low-frequency cutoﬀ (high-pass) ﬁlter at 30 Hz. The Juice ampliﬁers can amplify signals below 20 Hz, but

most speakers can’t reproduce frequencies that low. By engaging the SUBSONIC FILTER, you allow the ampliﬁer to power only the frequencies that you can hear. In addition, this ﬁlter can remove low- frequency stage noise (footsteps) and accidental microphone pops that could damage a loudspeaker.

10. CLIP LIMIT

The CLIP LIMIT switch is there to protect your loudspeakers from the eﬀects of clipping. It is designed to be virtually transparent, meaning you probably won’t even notice any audible diﬀerence when the switch is turned on.

We recommend that you leave this switch on at all times. However, if you are working at quiet levels, or you have already placed a compressor/limiter in the signal path, you can leave the CLIP LIMIT switch oﬀ.

11. AMP MODE

This switch determines the input signal routing within the ampliﬁer. For most applications, you will use the STEREO setting. However, some applications might be better suited for using either the MONO or the BRIDGE setting.

STEREO: This mode accepts separate left and right inputs (A and B), and routes them to the CHANNEL 1 and CHANNEL 2 outputs. Each channel’s Level control adjusts the gain for its own channel.

MONO: This mode accepts a single input (INPUT 1), and routes it to both the CHANNEL 1 and CHANNEL 2 outputs. Each channel’s Level control adjusts the gain for its own channel.

BRIDGE: This mode accepts a single input (INPUT 1), and uses both ampliﬁer outputs to double the power to one speaker (or set of speakers). Use the CHANNEL 1 Level control to adjust the gain (turn the CHANNEL 2 Level control all the way down). See “Output Wiring” on page 11 for information on how to connect a speaker in Bridge mode.