Bel Canto Design Stereo Amplifier PRe2TM PRe2PTM User Manual

User's Guide  
PRe2  
PRe2P  
Two Channel Analog  
Pre-Amplifier  
Bel Canto Design, LTD.  
212 Third Avenue North  
Minneapolis, MN 55401  
Phone: (612) 317.4550  
Fax: (612) 359.9358  
©2002-2004 Bel Canto Design, LTD  
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Unpacking your PRe2/P  
PRe2/P box contents include the following:  
1 (one) - PRe2/P Analog Preamplifier  
1 (one) - PRe2/P User’s Guide  
1 (one) - Power cord [6.6’ - 2 meters long]  
1 (one) - Remote Control  
1 (one) – Warranty Sheet  
Carefully unpack each piece and check  
for shipping damage. If there is any  
damage, or if anything is missing,  
please contact your dealer, distributor or  
Bel Canto Design.  
IMPORTANT: Save all packing  
materials as the packing is spe-  
cially designed to protect the unit during  
transportation or shipping. If the packag-  
ing becomes lost or damaged, please  
contact your dealer, distributor or Bel  
Canto before attempting to transport  
your unit.  
Power Connection  
The power supply on the PRe2/P is pre-  
set for the proper national voltage. The  
power cable should have the correct  
plug for your local power system. If you  
believe this to not be true, please con-  
tact your dealer immediately.  
This preamplifier, like any electrical com-  
ponent, can be dangerous and cause  
injury unless correct handling proce-  
dures are observed and used. Before  
powering this preamplifier it is neces-  
sary to read and follow proper setup  
and procedures.  
Warning!  
Do not connect power to this  
preamplifier yet!  
© 2002-2004 bel canto design, Ltd.  
page 3  
PRe2/P User’s Guide rev072004  
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Placement and Initial Setup  
Because the PRe2/P runs cool it can be  
Single Ended RCA and Balanced XLR  
connectors are available. XLR jacks  
allow balanced hookup using the stan-  
dard North American pin configuration:  
placed in many system locations without  
compromise. We do not recommend  
placing weights or other objects directly  
on the PRe2/P. This may mar or scratch  
the chassis finish. Do not use harsh  
chemicals when cleaning the outside of  
your PRe2/P.  
Pin 1 Ground  
Pin 2 Input +  
Pin 3 Input -  
IMPORTANT: Make all connections before powering your unit.  
Design Features  
The Bel Canto PRe2/P represents a pow-  
formers and multi-stage power supplies  
for precise power of sensitive analog cir-  
cuitry  
• Precision resistors and no capacitors in  
the audio signal path  
• Ultra low noise second stage regulation  
for the analog amplifier sections  
• Ultra-low noise active amplification for  
RIAA Phono Stage (PRe2P)  
• Front panel and remote selectable  
Phono stage gain, resistive and capaci-  
tive loading and Mono/Stereo opera-  
tion (PRe2P)  
erful statement in high performance  
audio control preamplifiers. Its superb  
audio performance and transparency ren-  
ders it a modern standard in control and  
RIAA preamplifier design:  
• All analog, low noise, low distortion  
architecture for controlling up to seven  
2-channel inputs including 1-balanced  
input  
• Fully balanced XLR outputs for optimum  
interface to the power amplifier  
• Programmable options for all inputs:  
Function (stereo, disable), Name, Main  
level, and Soft Mute level  
• Digitally controlled analog  
volume control for optimum signal archi-  
tecture and no-compromise gain and  
balance control  
• 4-layer PC board design for superior  
signal routing, grounding and power  
supply routing  
• Latest generation of active audio  
buffers, level controls and output drivers  
provide superb measured and subjec-  
tive audio quality  
• Independent digital and analog trans-  
© 2002-2004 bel canto design, Ltd.  
page 4  
PRe2/P User’s Guide rev072004  
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Conditioning  
The PRe2/P’s sonic performance will  
start to stabilize after 100 hours of con-  
tinuous power up.  
Front Panel and Remote Controls  
Volume Up:  
Decreases the output level.  
Balance Left: (available from the  
remote only)  
Increases the output level in 0.5 Decibel  
(dB) steps from 0 to 120.  
Shifts balance left in 0.5dB steps. It is  
also used to scroll left in the setup menu.  
Volume Down:  
HARD MUTES OUTPUT, DISABLES DISPLAY  
VOLUME AND BALANCE CONTROLS  
AND NAVIGATION FOR SETUP MENUS  
INPUT SELECTION  
TOGGLES DISPLAY ON/OFF  
CYCLES THROUGH INPUTS  
PRESS 7 TIMES TO  
ACCESS SETUP MENUS  
TOGGLES THROUGH  
TAPE OUTPUT  
SELECTION  
© 2002-2004 bel canto design, Ltd.  
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PRe2/P User’s Guide rev072004  
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Balance Right: (available from the  
MAIN:  
remote only)  
Cycles through the main inputs. It is also  
used to scroll to the left in the setup  
menu.  
Shifts balance right in 0.5dB steps. It is  
also used to scroll right in the setup  
menu.  
LOOP: (available from the remote only)  
This is used to cycle through the inputs.  
INPUT:  
MUTE:  
The PRe2/P starts up in Soft Mute. This  
level is 40 units (20dB) below the dis-  
played volume level. When MUTE is first  
pressed it goes to the Soft state, pressing  
MUTE again within 3 seconds will fully  
MUTE the outputs.  
On the remote the Numbered Buttons (1-  
5) allow you to select between the 1st  
five active inputs. From the remote, you  
can cycle through inputs using the LOOP  
button. From the front panel, you can  
cycle through inputs by pressing the  
MAIN button. When switching between  
inputs, the PRe2/P will quickly ramp  
down the volume, switch inputs, then  
quickly ramp back up to the pro-  
ENTER:  
This control button is pressed and held  
on the front panel or pressed 7 times on  
the remote to enter into the menu setting  
functions described below. It is also used  
to enter into specific modes within the  
menu system.  
grammed volume setting.  
VOLUME CONTROL  
AND UP/DOWN KEYS*  
PRESS ENTER AND HOLD TO ACCESS  
SETUP MENU*  
TAPE INPUT SELECT*  
SOFT AND FULL MUTE  
FUNCTIONS  
HARD MUTES OUTPUT, DISABLES  
DISPLAY AND CONTROLS  
MAIN INPUT SELECT*  
*ALSO USED FOR NAVIGATING THE SETUP MENU  
© 2002-2004 bel canto design, Ltd.  
page 6  
PRe2/P User’s Guide rev072004  
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TAPE:  
STANDBY:  
On both the remote and the front panel,  
the TAPE button will cycle through the  
input to be routed to the Tape Out jacks  
and a Tape Out Off setting.  
When in STANDBY mode the red LED is  
engaged, the display is off and the out-  
puts are muted. The unit remains  
warmed up and ready for use when  
taken out of standby.  
It is also used to scroll to the right in the  
setup menu.  
PRe2 Back Panel  
PRe2P Back Panel  
© 2002-2004 bel canto design, Ltd.  
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PRe2/P User’s Guide rev072004  
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PRe2/P Setup and Options  
PRe2/P MENU FUNCTIONS  
Press ENTER and use the UP/DOWN  
keys to set the default level when coming  
A) INPUTS CONFIGURATION Menu  
out of STANDBY. Press ENTER to exit this  
menu mode  
This menu is used to customize the input  
options.  
.
4) The fourth menu level is used to set the  
Soft Mute Level.  
It is used to set:  
This is preset to -40 units or -20 dB. This is  
generally a good soft mute level.  
1) Input Function  
2) Input Name  
3) Initial Volume level  
4) Soft Mute level  
If you wish to change this for a given  
input then press ENTER and use the  
UP/DOWN keys to scroll to a different  
setting.  
1) The first level of this menu is used to set  
the INPUT FUNCTION. The options are  
Stereo or Disabled.  
Press Enter to exit this menu mode.  
Change these settings by scrolling left or  
right to the desired input and pressing  
ENTER to change the setting. Use the  
UP/DOWN keys to scroll through the set-  
ting options. Disable unused inputs.  
B) OFFSETS CONFIGURATION  
Menu  
This menu is used to set the 0dB gain  
setting for the Pre2/P.  
Press ENTER to exit this menu mode.  
This is important for optimizing the gain  
control range for systems with different  
amplifier gain, input levels and loud-  
speaker efficiencies.  
2) The second level of this menu is used  
for changing the Name of a given input.  
To change an input name press ENTER  
and you will see an under-bar indicator  
for each of the 8 characters that can be  
used for naming the input. Scroll the indi-  
cator left or right using the LEFT/RIGHT  
keys and use the UP/DOWN keys to  
scroll through capital and lower case let-  
ter, numbers 0-9 and a SPACE.  
For example: if you find that the volume  
level is too loud even if the indicated vol-  
ume is at or near 0 then you need to  
increase the 0dB gain setting from the  
default of 100 to 110, 120 or higher.  
This will allow you to set the volume  
level lower before reaching the 0 limit  
on the display.  
You can use the SPACE to separate words  
and numbers or to center short names like  
CD. Press Enter to exit this menu mode.  
To change this setting, press ENTER and  
use the UP/DOWN controls to set the  
desired number.  
3) The third menu level is used to set the  
Initial Volume level.  
Press ENTER to exit this menu mode.  
© 2002-2004 bel canto design, Ltd.  
page 8  
PRe2/P User’s Guide rev072004  
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C) SAVE CONFIG ? Menu  
D) ERASE CONFIG ? Menu  
This is used to Save the Setup Changes  
made in the menu system.  
This is used to Restore the Factory  
Default menu settings.  
Be sure to use this to store the changes  
when you are satisfied with your setup.  
Use the UP/DOWN keys to toggle  
between YES or NO and save the menu  
settings.  
Use the UP/DOWN keys to toggle to  
YES or NO.  
Press ENTER to erase your configuration  
and restore the factory settings.  
Saving the settings will insure that your  
changes are active even if power is  
removed from the Pre2/P.  
Warning: This operation resets all of  
your custom settings.  
Press ENTER to save your configuration  
and exit this menu mode.  
PRe2P Phono Stage Setup  
A*) PRe2P Phono Configuration  
Menu  
ing through the loading options.  
3) Capacitive Input loading may be set  
the same way.  
This menu is used for setting up the  
Phono Section of the PRe2P. It is the first  
active menu only in the PRE2P and is not  
used in the PRe2.  
4) Gain is set between 40 dB at 1KHz  
and 60 dB at 1 KHz. We suggest that  
you use 60 dB for cartridges with out-  
puts rated below 1-2 mV.  
1) Mono/Stereo mode is set by pressing  
ENTER and using the UP/DOWN button  
to select the mode.  
Press ENTER to exit each menu mode  
and use the SAVE CONFIG ? menu to  
save your setup.  
2) Resistive Input loading. This may be  
adjusted by pressing ENTER and scroll-  
© 2002-2004 bel canto design, Ltd.  
page 9  
PRe2/P User’s Guide rev072004  
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Specifications  
PRe2/P Line Stage Specifications:  
Bandwidth • DC-200KHz  
Volume setting for unity gain • 100 (factory default setting)  
Signal to Noise Ratio @ 2 Volt RMS • >100 dB A weighted, 20Hz-20kHz  
Distortion @ 2 Volt RMS/ 1kHz <0.003%  
Input overload: 10 V RMS  
Output Impedance: 50 Ohms  
Input Impedance: 10K Ohms  
Maximum Gain: 16dB  
Maximum Output Level: 10 V RMS  
PRe2P Phono Specifications:  
Gain @1KHz • 40dB or 60 dB  
Input Resistive Load • 47Kohms to 30 Ohms selectable in 16 steps  
Input Capacitive Load • 150 pF to 950 pF selectable in 8 steps  
RIAA Accuracy • +/-0.2 dB 20Hz to 20 KHz  
Noise Ratio re: 5 mV in at 40 dB gain: >80dB A-weighted  
Noise Ratio re: 0.5 mV in at 60 dB gain: >60dB A-weighted  
Idle power draw • 21 Watts  
Power Requirements • 110-120 VAC 50-60 Hz or 220-240 VAC 50-60 Hz  
Dimensions • 17.5” W x 14.5” D x 4.5” H (445 mm x 368 mm x 114 mm)  
Weight: 24lbs. (13 kg)  
© 2002-2004 bel canto design, Ltd.  
page 10  
PRe2/P User’s Guide rev072004  
Download from Www.Somanuals.com. All Manuals Search And Download.  
© 2002-2004 bel canto design, Ltd.  
page 11  
PRe2/P User’s Guide rev072004  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Bel Canto Design, LTD.  
212 Third Avenue North  
Minneapolis, MN 55401  
Phone: (612) 317.4550  
Fax: (612) 359.9358  
©2002-2004 Bel Canto Design, LTD  
PRe2™ is a trademark of Bel Canto Design, LTD  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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