Bel Canto e.One series User manual

Phono3™
e.One™Series
Two Channel Analog
RIAA MM/MC Pre-Amplifier
Bel Canto Design, LTD.
221 North First Street
Minneapolis, MN 55401
Phone: [phone]
Fax: [phone]
www.belcantodesign.com
[email protected]
©2007 Bel Canto Design, LTD
User's Guide

page 3© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
Please take a moment to fill out your warranty regis-
tration sheet. Returning this registration validates
your warranty. This information will not be sold or
released outside Bel Canto. Your comments and sug-
gestions help us continue to improve upon our prod-
ucts and services.
Bel Canto products are automatically covered by a
90 day factory warranty. With no additional cost,
you have the option to extend your warranty by com-
pleting and returning the enclosed warranty registra-
tion form within 30 days of purchase, along with a
copy of the original sales receipt from an authorized
Bel Canto dealer. This will ensure prompt warranty
coverage. This warranty is only valid to the original
owner who has returned the warranty sheet along
with a copy of the original sales receipt, covering all
internal parts and workmanship. This warranty is
void if damage is due to abuse, neglect, or unautho-
rized modification. The cost associated with the
return of this unit is the sole responsibility of the
owner.
Bel Canto products are uniquely identified with a
serial number on the back panel of each unit. This
number is required to validate your warranty. Please
reference the serial number if service is required. If
you have any questions, comments, or if we can be
of service, please contact us Monday through Friday
9:00 a.m. - 5:00 p.m. CT/USA.
Warranty Information
TABLE OF CONTENTS
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Initial Setup and Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Design Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Setup and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 - 7
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Setup Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Thank you for purchasing the Bel Canto Design Phono3. Your Phono3 sets a benchmark
for design, quality and sonic performance, continuing Bel Canto’s heritage of musicality
and realism.
Phono3
Two-Channel Analog
Pre-Amplifier

The power supply on the Phono3 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.
Warning !
Do not connect power to this
preamplifier yet!
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.
page 4
© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
Unpacking your Phono3
Power Connection
Phono3 box contents include the following:
1 (one) - Phono3 Preamplifier
1 (one) - Phono3 User’s Guide
1 (one) - Power cord [6.6’ - 2 meters long]
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 packaging becomes lost
or damaged, please contact your dealer,
distributor or Bel Canto before attempt-
ing to transport your unit.

page 5© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
Because the Phono3 runs cool it can be
placed in many system locations without
compromise. We do not recommend
placing weights or other objects directly
on the Phono3. This may mar or scratch
the chassis finish. Do not use harsh
chemicals when cleaning the outside of
your Phono3.
Single Ended RCA input and output con-
nections are available. You can place
the Phono3 close to the turntable and
minimize the length of the low level inter-
connect from your cartridge. When
power is applied the front panel Blue
LED will light.
The Bel Canto Phono3 is designed to
provide low noise operation for moving
coil and moving magnet phono car-
tridges and high accuracy audio RIAA
equalization:
• All analog, low noise, low distortion
Class A integrated circuit architecture.
• High Current output buffer for driving
any load.
• 4-layer PC board design for superior
signal routing, grounding and power
supply routing.
• Latest generation of low-noise, low-dis-
tortion high speed audio amplifiers,
and output drivers provide superb meas-
ured and subjective audio quality.
• Multi-stage power supplies for precise
power to the sensitive analog circuitry
• Precision audio grade resistors and
precision metal foil film capacitors in
the audio signal path.
• Ultra low noise second stage dual inde-
pendant regulation for the analog
amplifier sections.
• Single-stage amplifier and classA oper-
ation to insure minimal signal degreda-
tion and maximum dynamic perform-
ance.
• Rear Panel gain and load switching
using precision sealed double wiping
gold contact switches.
Placement and Initial Setup
Design Features
IMPORTANT: Make all connections and settings before powering your unit.

page 6© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
Switch Settings
A set of 9 switches are available next to
each RCA input. These are used to setup
the optimum Gain, Resistive Load and
Capacitive Load for your cartridge.
Please refer to the manual for your car-
tridge for optimum gain and RC loading
recommendations.
Note that you should Mute or
Disconnect the Phono3 from your
preamplifier before making any
changes to the rear panel switch-
es.
We recommend using a small flat tip
screwdriver such as used for attaching
your cartridge to a tonearm or a similar
tool to change the switch positions.
Gain Setting Switches:
The Phono3 default gain setting will be
for typical high output cartridges, from
2mV to 5mV nominal output levels the
40 dB gain setting will be best. If you
are using a low output Moving Coil car-
tridge then switch each channel to the
60 dB setting by pressing the Gain
Switches to the DOWN position.
Insure that the power to the
Phono3 is disconnected and/or
the preamplifier is muted before
changing this setting to prevent a
large transient from damaging
your loudspeakers or power
amplifiers!
Input Resistor Load Setting
Switches:
The default input resistance is 47,000
(47K) ohms when all switches are in the
UP position. When a switch is set in the
DOWN position the corresponding resis-
tor value is placed in parallel to the 47K
resistor, resulting in a lower input resist-
ance. This means that a large range of
effective input resistance values can be
selected by selecting different parallel
combinations of resistance value. The
table on the following page can be used
to determine the switch positions for dif-
ferent input resistance values.
Input Capacitor Load Setting
Switches:
The default input capacitance value
when all catacitance switches are in the
UP is 150 picofarads (150pF).
Additional capacitance can be added to
this by selecting one of the capacitance
values by placing the corresponding
switch in the DOWN position: 100pF,
220pF or 390pF. These values will add
to the total input loading capacitance.
The table on the following page can be
used in setting the switches to achieve
the desired input capacitance.
Insure that both channels have
the same switch settings!
NOTE: The 2nd Switch next to the
gain switch is not used and can
remain in the UP position.
Phono3 Setup

page 7© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
Resistance Switch in Down Position Effective Load Resistance (ohms)
Selected Capacitor(s) Total Load Capacitance
None 150 pF
100 pF 250 pF
220 pF 370 pF
390 pF 540 pF
100 + 220 pF 470 pF
100 + 390 pF 640 pF
220 + 390 pF 760 pF
100 + 220 + 390 pF 860 pF
10000 1000 500 100 50
X 8250
X980
X495
X100
X50
X X 891
X X 331
X X 91
X X 83
X X 45
XXX 77
XXX 31
XXXXX 24
Phono3 Setup

page 8© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
Phono3 Back Panel
The Phono3’s sonic performance will
start to stabilize after 100 hours of
continuous power up. For optimum per-
formance keep the Phono3 powered up
at all times.
Conditioning

page 9© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
Phono3 Setup Notes:
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© 2007 bel canto design, Ltd. Phono3 User’s Guide 0207revA
page 10
Bandwidth • 1Hz-50KHz
RIAA Accuracy • 20Hz-20KHz +/- 0.2 dB
Signal to Noise Ratio 40 dB gain • >80 dB A weighted, re 5mV RMS in
Distortion @ 2 Volt RMS/1kHz • <0.01%
Maximum Output Level • 9.5 V RMS
Output Impedance • 100 Ohms Single Ended
Input Impedance • 47K Ohms Nominal (all Resistor Switches UP)
Gain Level Options • 40 dB (100X) and 60 dB (1000X)
Idle power draw • 10 Watts
Dimensions • 8.5” W x 12.5” D x 3” H (216 mm x 318 mm x 75 mm)
Weight: • 10lbs. (4.5 kg)
Phono3 Specifications

Bel Canto Design, LTD.
221 North First Street
Minneapolis, MN 55401
Phone: [phone]
Fax: [phone]
www.belcantodesign.com
[email protected]
© 2007 Bel Canto Design, LTD
Phono3™ is a trademark of Bel Canto Design, LTD