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CONFIGURATIONS AND CONTROLS

The Halo Chorus can be set up in three basic configurations depending on your input and 
output requirements - mono, mono in / stereo out, and stereo in / stereo out.

IMPORTANT - Stereo amp configurations and grounding: Use caution whenever connecting 

the Halo Chorus to multiple amplifiers. Ensure both amps are safely grounded and share the 

same ground. If in doubt, ask a qualified technician - ground faults can result in severe injury 

and death.

MONO

In this configuration, the input signal (either from a guitar or from the previous pedal in 
the chain) is brought into the ‘

<

’ input, with the output taken from the ‘

<

’ output. The in-

ternal circuitry will automatically configure to parallel sum both the ‘chorus’ pitch modu-
lation and ‘vibe’ phase modulation effects, illustrated below in Figure 1:

Modulated

Short

Delay

Phase

Modulation

Σ

INPUT 

OUTPUT 1

Direct Signal

“Vibe” Signal

“Chorus”
   Signal

LFO

SPEED

CH DEPTH

CH MIX

PM MIX

In the mono configuration, the 180 degree phase switch has no effect on the output sound.

MONO IN / STEREO OUT

In this configuration, the input signal (either from a guitar or from the previous pedal in 
the chain) is brought into the ‘

<

’ input, with the output taken from both the ‘

<

’ and ‘

<<

 

outputs. The internal circuitry automatically configures to the topology shown below in 
Figure 2:

!

Halo Chorus user manual v1.01

!

4

Figure 1: Halo Chorus in mono in / mono out configuration

<

<

Summary of Contents for Halo Chorus

Page 1: ...Halo Chorus Stereo chorus vibe guitar effect pedal User Manual v1 01 October 11 2006 Halo Chorus user manual v1 01 1...

Page 2: ...e additional infrastructure required for the second bucket brigade voice Back to the drawing board we went We looked again at what could be done psychoacoustically to generate a wide stereo im age wit...

Page 3: ...tion effects from light chorusing to deep vibey swirl stereo operation gives wide stereo image spread while preserving the original guitar tone NOS MN3007 analog bucket brigade chip running at 15V rai...

Page 4: ...t with the output taken from the output The in ternal circuitry will automatically configure to parallel sum both the chorus pitch modu lation and vibe phase modulation effects illustrated below in Fi...

Page 5: ...unt of pitch detuning of the pitch modulation section STEREO IN STEREO OUT In this configuration the input signal either from a stereo guitar e g Rickenbacker 360 or from the previous stereo pedal in...

Page 6: ...gnal before mixing back in with the direct signal SPEED Sets the speed of the Low Fre quency Oscil lator LFO for both cho rus and phase modulation Approx 0 2 to 10 Hz range PM MIX Sets the level of ph...

Page 7: ...would use for typical in front of the amp and in amplifier serial FX loops For amplifiers with parallel FX loops this should be set to the in position when placed in such a loop Figure 4 Kill dry in...

Page 8: ...d to a triangle wave shape giving a deeper pitch modulation effect Figure 6 LFO waveform jumper selection sine left factory setting triangle right 3 Delay trimpot this is factory set to approx a 10 ms...

Page 9: ...nfiguration providing 100 mA of current can be used to power the unit With appropriate cabling many commercially available pedal power supplies such as the Voodoo Labs Pedal Power 2 Dunlop DC brick an...

Page 10: ...periment with the Halo Chorus HALO CLEAN SIGNATURE Everything set to just past noon MAPLE SYRUP Thick and liquid THE FINAL FRONTIER Spatialization using a very slow LFO OPEN AIR CONCERT A nice phase a...

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