Bryston 300, 60, 120 User Manual

BRYSTON

Last change on 31-oct-2003

OWNER’S MANUAL

Instructions For Bryston

PowerPac 60/120/300

Monaural Amplifiers

GENERAL INSTRUCTIONS

General Information:

Thank you for choosing a Bryston

product. We would welcome any comments
or suggestions you may have regarding the
operation of your amplifier. We consider our
customer to be Bryston,s most important re­source and your opinion is very much appre­ciated. In the unlikely event you have a prob­lem with your amplifier and must return it for
service please keep the original box and all
packaging material.

The Bryston Po werPac 60/120/300
are high quality modular single channel
60/120 /300 watt power amplifier intended for

use in applications where portability, quality
and flexibility are of prime importance.

The PowerPac is a perfect choice for
use as a modular power amplifier which can
be attached directly to the rear of your loud­speaker . It can also be bolted on the wall, or
in the wall, for utilization in audio/video sur­round systems (left/right/center/rears) where
a non-conspicuous power module is required.
Another application would be in multi-room
audio systems where single or multiple ampli­fiers are needed to provide music to other
rooms.

Setup Recommendations:

We recommend that you do not place

the amplifier in a totally enclosed area. Allow
some space at the top, sides as your Bryston
amplifier relies on convection cooling and
some air flow is desirable.

Make sure the power switch on the
front panel of the amplifier is in the off (out)
position. Plug the power cord into the front
panel of the amplifier, then insert the male
end into the wall outlet.

All Bryston amplifiers contain high
quality, dedicated circuitry in the power sup­plies to reject RF, line spikes and other
power-line problems.

Bryston power amplifiers do not re­quire specialized power line conditioners.
Plug the amplifier directly into its own wall
socket.

Connect your loudspeakers ensuring
that the positive (red) and ground (black) ter­minals on your amplifier are connected to the
positive and ground terminals on your loud­speakers.

Note: Make sure that the front panel
switch for choosing balanced or non­balanced is in the correct position.

Description:

The Bryston PowerPac 60 monaural
amplifier consist of two of Bryston’s custom
power transistors as output devices. The
power output is 60 Watts @ 8 Ohms.

The Bryston PowerPac 120 monaural

amplifier consist of four of Bryston’s custom
power transistors as output devices. The
power output is 120 Watts @ 8 Ohms.

The Bryston PowerPac 300 monaural

amplifier consist of eight of Bryston’s custom

power transistors as output devices. The
power output is 300 Watts @ 8 Ohms.

Dimensions PP60: (LHW) 12 X 1.8 X 7.1 Inches,

30.5 x 4.6 x 17.9 cm.
Weight 5.7 Lbs/2.6Kg.
Dimensions PP120: (LHW) 12 X 4.3 X 7 Inches,

30.5 x 10.9 x 17.8 cm.
Weight 10.6 Lbs/4.8Kg.
Dimensions PP300: (LHW) 17 X 4.5 X 8.4 Inches,
43 x 11.5 x 21 cm.
Weight 23 Lbs/10.5Kg.

BRYSTON POWERPAC 60/120/300

Input and Output Connectors:

Bryston PowerPac amplifiers come
standard with two input connectors: one un­balanced RCA/phono connector and a bal­anced combination XLR - 1/4-inch jack with
fully discrete active input circuitry.

All input connectors are gold-plated
and should only be used only with high­quality, gold-plated interconnect cable as a
poorly plated connector will eventually cor­rode through the gold flash.

Bryston offers interconnect cables
with heavily gold plated, quality connectors
available through any Bryston authorized
dealer or directly from Bryston.

Output connectors consist of one
pair of five-way binding post terminals (1
red and 1 black) that can accept either
standard banana plugs, spade lugs, pins or
bare wire. Since the binding posts are gold­plated, we recommend gold plated connec­tors also be used on the speaker cables.

All Bryston amplifiers will accept bal­anced or single-ended (RCA) input connec­tors. The balanced inputs use combination
3-pin XLR (pin-1-ground), (pin-2-+) and
1/4-inch tip-(+), ring and sleeve (ground)
input connectors.

Grounding and Ground LIft Switch (except PP300 and PP120):

A ground lift switch is located on the

front panel of the amplifier. It is connected
between the chassis ground (including the
third prong on the power cord) and the signal
ground.

This switch is normally left in the con­nected (up) position. Occasionally a multi­amplifier installation or an unusual grounding
situation with another component (CD player,
video recorder, television etc.) will cause a

ground loop between the signal ground and
the chassis ground. This switch will reduce
the resultant hum in many cases without re­sorting to a “ cheater plug ” by switching to
the separated (down) position.

Note: this switch does not disconnect the
chassis from the third prong on the power
cord which must be left intact for safety
reasons.

Power Clipping Indicator

Dual colour LED pilot lights indicating GREEN at normal level, flashing RED at clipping.

SPECIAL INSTRUCTIONS

POWERPAC 120/300

The PowerPac 120/300 remote on/off
function allows the user to link the power
on/off of an amplifier, or group of amplifi­ers, to an external preamp, or other control
product. This is useful in installations, such
as home theater, which usually present a
convenience problem for powering up mul­tiple amplifiers, often at distant locations
from the source.

Located on the front panel of the
PowerPac 120/300 (see illustration), is a

two terminal 12 volts (active range 9 -12
volts AC or DC of either polarity), input

connector and a potentiometer. The
PowerPac amplifiers can then be powered­up by an external 12-volt signal connected
to the terminals of the jack.

This jack will accept 1/4 -inch stripped
wire ends, inserted into the square holes
provided, and the adjacent screws care­fully tightened to hold them in place. The
internal "delay" turn-on circuit, will delay
turn–on between 1 and 10 seconds, follow­ing application of the 12-Volts. In this way
groups of amplifiers may be sequenced on
to distribute power surges over a period of
time.

The power switch must be left in the
“off” position, at all times for the
PP120 amplifier to operate in the re­mote mode.

The PP300 has a 3-position switch al­lowing for ‘Local (on)’ or ‘Off ‘or ‘REM

(remote)’ power selection.

The amplifier will remain powered-up
while the 12-Volt signal is present, and
will turn off when the 12-Volt signal is
switched off.

Input sensitivity is selectable using the
‘INPUT’ slide switch. In the ‘ BAL REG' posi­tion, 2 Volts in will give 100 Watts into 8

ohms at the output. This is the recom-
mended setting when using Bryston pre-

amplifiers or other pre-amplifiers having ac­tive balanced outputs. This setting also pro­duces the lowest noise floor.

The ‘BAL +6 dB ” setting adds 6 dB of gain
to provide an input sensitivity of 1 Volt in =
100 Watts / 8 ohms at the output for outputs
that are transformer coupled, or low level
sources.

The ‘UNBAL ’ setting selects the gold plated
‘phono’ type connector. The input impedance is
50K ohms.

SST Series

FUSE

REMOTE

CAUTION: DISCONNECT SUPPLY

CAUTION: DISCONNECT SUPPLY

BEFORE REPLACING FUSE

CORD BEFORE REPLACING FUSE

CORD
ATTENTION:

ATTENTION: DEBRANCHER AVANT

DE

DE REMPLACER LE FUSIBLE

DEBRANCHER AVANT

REMPLACER LE FUSIBLE

ON

AC/DCAC / DC

12V=ON12V = ON

0V = OFF0V = OFF

PWR SWPWR SW

120W / 8120W / 8

+

PWR / CLIPPWR / CLIP

INPUT SW

INPUT SW

BAL
REG

UNBAL

AMPLIFIER

BAL

+6dB

1

2

+

S

PUSH

G

3

_

_

_

+

G

MONAURAL AMPLIFIERMONAURAL

OFF

LOCAL

POWER SWPOWER SW

FUSE

CAUTION: DISCONNECT SUPPLY

CAUTION: DISCONNECT SUPPLY

BEFORE REPLACING FUSE

CORD BEFORE REPLACING FUSE

CORD
ATTENTION:

ATTENTION: DEBRANCHER AVANT

DE

DE REMPLACER LE FUSIBLE

DEBRANCHER AVANT

REMPLACER LE FUSIBLE

REM.

AC/DCAC / DC

12V=ON12V = ON

0V = OFF0V = OFF

REMOTE ON / OFFREMOTE ON / OFF

MONAURAL AMPLIFIERMONAURAL AMPLIFIER

300W / 8300W / 8

+

INPUT SW

INPUT SW

BAL
REG

UNBAL

BAL

1

2

+

G

3

S

_

+6dB

PUSH

_

_

+

G

BRYSTON PowerP ac SPECIFICATIONS

PowerPac 300 PowerPac 120 PowerPac 60

300 watts into 8 ohms 120W/8 ohms 60W/8 ohms
500 watts into 4 ohms 200W/4 ohms 100W/4 ohms

Gain

29dB (Unbalanced) 29dB (Unbalanced) 29dB (Unbalanced)
23dB or 29dB (Balanced) 23dB or 29dB (Balanced) 23dB (Reg.Balanced)
29dB (Pro-balanced)

Distortion

IM or THD at nominal output power < 0.007% from 20Hz to 20kHz

Noise

>106dB below rated output

Power Bandwidth

<1 Hz to over 100 kHz

Input Sensitivity

Unbalanced 1.5 volts in = Unbalanced 1 Volts in = Unbalanced 0.75 Volts in =
250 watts into 8 ohms 100 watts at 8 ohms 60 watts at 8 Ohms

Input Impedance

50K ohms unbalanced
20K ohms balanced

Heatsinking

Over 3320 cm/square Over 1690 cm/square Over 600 cm/square

Features

Regulated power supplies to all voltage gain stages
Gold plated input and output connectors
Switchable balanced XLR - 1/4" w/ two different gains and RCA unbalanced inputs only for PP300 & PP120
Remote power turn-on 12V, AC/DC only for PP300 & PP120
Power Clipping Indicator for PP300, PP120 & PP60
Soft start Power supply only for PP300

Dimensions

LxHxW = 17"x4.5"x8.4" 12"x4.3"x7" 12"x1.8"x7.1"
43x11.5x21 Cm 30.5x10.9x17.8 Cm 30.5x4.6x17.9 Cm
wt: 23 lbs 11.9 lbs 5.7 lbs
wt:10.5 kg 5.4 Kg. 2.6 Kg.

BRYSTON 20 -YEAR WARRANTY

Bryston products are warranted to be free
from manufacturing defects for a minimum
of twenty years from the original date of
manufacture. This includes parts, labour
and return shipping to the first owner and
all subsequent owners. Warranty coverage
is automatic and commences with the
original date of manufacture which is kept
on file at Bryston.

In the event of a defect or malfunction,
Bryston will remedy the problem by repair
or replacement, as we deem necessary, to
restore the product to full performance.

This warranty is considered void if the
defect, malfunction or failure of the
product or any component part was
caused by damage (not resulting from a
defect or malfunction) or abuse while in
the possession of the customer, tampering
by persons other than factory-authorized
service personnel, or failure to comply
with Bryston operating instructions.

BRYSTON LTD.
P.O. BOX 2170
677 NEAL DRIVE
PETERBOROUGH, ONTARIO
CANADA.
K9J 7Y4.
PHONE: [phone]
FAX: [phone]
www. bryston.ca

This warranty gives you specific legal
rights and you may also have other rights
which may vary from province to province
and country to country.

BRYSTON SERVICE IN CANADA:

24 STEINWAY BLVD., UNIT 48

ETOBICOKE, ONTARIO

M9W 6T8

PHONE: [phone]

FAX: [phone]

BRYSTON SERVICE IN UNITED STATES:

30 COVENTRY STREET,

NEWPORT, VERMONT Suite 5.

05855

PHONE: [phone]

FAX: [phone]