background image

Front Panel Functions 

 

 

 

1. 

Input Jack 

High impedance input to the amplifier.  Plug in your instrument here. 

 
2.

 Treble Control (Clean & Lead) 

- Adjusts the high frequency response.  In the full counter-

clockwise position, high  frequencies are bypassed to ground.  In the full clockwise position, high 
frequencies are allowed to pass to the next stage.   
 
3.

 Middle Control (Clean & Lead) 

- Adjusts the mid-range response.  In the full counter-clockwise 

position, the tone will b

e somewhat “scooped” of mid-range response, emphasizing the highs and 

lows.  In the full clockwise position, mid-range frequencies are allowed to pass to the gain stage.   
 
4

.  Bass Control (Clean & Lead) 

- Adjusts the bass response.  In the full counter-clockwise 

position, low frequencies are cut.  In addition, the response of the treble and mid-range controls is 
greatly reduced.  In the full clockwise position, low frequencies are allowed to pass to the gain 
stage.   
 
5.

 Input Gain (Clean & Lead) 

- Adjusts the overall gain of the amplifier.  Start with this control in 

the 12 o’clock position 
 
6.

 Master Volume (Clean & Lead) 

- Adjusts the output level of the clean and lead channels. 

The Lead Channel can be activated by pulling the Lead Master control

 
7.

 Reverb (Clean & Lead)

 - The front panel reverb control is the return, or mix, control.  The 

reverb effect is defeated with this control in the full counter clockwise position. 
 
8. 

Boost (Clean & Lead) 

Adjusts a “Solo” option, increasing the volume of each channel. It does 

not alter the gain or tone structure. These controls must be set to a level greater than the Master 
Volumes to be effective. 

Both Clean and Lead Boosts are Foot-Switchable and can be 

activated by pulling the Boost Controls. 

 
9.

 Contour (Clean & Lead) 

The contour control is an active wide band sweep. In the 12 o’clock 

position, the amps’ frequency response is flat. Counterclockwise rotation reduces high end 
response and increases low frequencies. Counterclockwise rotation decreases low end and 
increases the high frequency response. This control is very useful for maintaining preamp tone 
control settings, while allowing a global adjustment to compensate for differences in room 
acoustics, speaker cabinets, or bright to dark guitars (PRS Humbucker to Strat, for example). This 
control also actively reduces the articulation available, allowing a softer setting or extremely open 
and revealing, depending on your individual style and requirements. 
 
10.

 Stand-by Switch

- Should 

be in the “down” or “stand-by” position when you apply power to the 

Summary of Contents for Two-Rock Bi-ONYX

Page 1: ...Bi Onyx 5o 1oo Watt OWNERS MANUAL...

Page 2: ...nce with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers plugs and the point where they exit from the apparatus 9 Protect the power cord from be...

Page 3: ...tivated by pulling the Lead Master control 7 Reverb Clean Lead The front panel reverb control is the return or mix control The reverb effect is defeated with this control in the full counter clockwise...

Page 4: ...values The switch must be in the correct position for what tubes are installed in the amp If the switch is in the incorrect position the amplifier will eventually blow the fuse Refer to Fuse Chart fo...

Page 5: ...d from the footswitch A 4 pin XLR cable needs to be used with foot switch and is included in purchase Foot Switch Fuse Chart All Fuses are 3AG Type 250 Volt SLO BLO Export 100 Volt Domestic Fuses Expo...

Page 6: ...unit and connect proper speaker load DO NOT have an instrument connected to the input during the biasing procedure Take unit off standby and allow a few seconds for the circuit to stabilize Set multi...

Page 7: ...gher then 044V as it will cause tube failure Do not set bias higher then recommend levels as it can lead to tube failure or failure within the amplifier amplifiers are brought to you by Premier Builde...

Page 8: ...ning solvents Wipe exterior with a clean dry cloth only Refer servicing to a qualified service technician This is a product of Premier Builders Guild 619 MARTIN AVENUE SUITE 6 ROHNERT PARK CA 94928 70...

Page 9: ......

Reviews: