TC/60
Operation Manual
S Y S TE MOE
10074 SW Arctic Drive Beaverton, OR 97005 503-641-7287
E
model
TC/60
BIAMP's new generation
professional stereo amplifiers have
established a modern standard for high
performance, durability, and reliability.
These advances have been made
through recently developed semiconduc-
tor devices and research into super fideli-
ty amplifiers and the reasons they sound
different. This has led to new methods for
eliminating audible distortion; the reduc-
tion of-transient inter-modulation distor-
tion (TIM) and siewing induced distortion
(SID). You can hear a startling difference
between BIAMP professional stereo
amplifiers and the old industry stand-bys
because BIAMP power amplifiers have
- been designed to have low TIM and SID,
establishing new audible distortion per-
formance that soon will be expected from
all sonically superior power amplifiers.
These new criteria have been met without
sacrificing either reliability or stability.
The block diagram of the TC/60 pro-
fessional stereo power amplifier reveals
some of the reasons BIAMP has been
able to achieve this performance. Both
balanced and unbalanced inputs are pro-
vided; balanced operation provides su-
perior noise, hum, and common mode
rejection usually associated with trans-
former coupled inputs without paying the
OPERATING
INSTRUCTIONS
performance price of using a transformer;
restricted frequency response, and sensi-
tivity to external magnetic fields. A single
ended input is provided for systems re-
quiring this option, and switching between
the two input modes is made automati-
cally. (
Provisions are made for simple change
over from stereo to bridged/mono opera-
tion. There is no chassis wiring to change,
just a switch on the rear panel and chang-
ing the output leads.
The BIAMP TC/60 is engineered with
premium components selected for their
ability to perform in a professional envi-
ronment. Each channel has two BIFET
operational amplifiers, fourteen transis-
tors divided equally between PNP and
NPN types. A mere parts count cannot
convey how the TC/60 functions because
we cannot describe the skill with which
these components have been chosen and
watched. All contribute to the whole of
startling performance. Truly an optii m
design, the TC/60 sets new standards in
professional amplifiers.
TABLE OF CONTENTS
Operating Parameters
Specifications
Block Diagram
Operating Precautions
Problem Check List
Warranty and Service
10
11
13
14
OUTPUTS
09 Ey
Each channel of the BIAMP TC/60 has two output connections.
They are standard 5-way binding posts on 3/4 inch spacing.
The red post is in phase with the input, that is a positive
going signal on the input provides a positive going output.
This standard BIAMP configuration simplifies system phasing.
The black binding post is the system return and is referenced
to chassis ground. |
In stereo or two channel systems, connect the + speaker wire
to the red post and the - speaker wire to the black post.
Remember that speaker wire resistance will rob you of output
power, so use the largest size and shortest length of wire
possible. Standard SJ appliance cord is often useful in this
‚application; check your local codes to be sure. To choose
the best wire size for your installation, consult the wire (
loss table that has been calculated for the TC/60 in both
stereo and mono operation.
POWER LOSS TABLE
#16 Wire Pair (.008 ohms per foot)
System Feet per 1 watt loss Feet per 10% loss (1dB)
60 Watts/ 8 ohms 16 192 Ft. = ( 6 watts)
90 Watts/ 4 ohms 8 160 Ft. = ( 9 watts)
120 Watts/16 ohms 32 832 Ft. = (12 watts)
180 Watts/ 8 ohms 16 672 Ft. = (18 watts)
#14 Wire Pair. (.005 ohms per foot)
System Feet per 1 watt loss Feet per 10% loss (1dB)
60 Watts/ 8 ohms 26 307 Ft. = ( 6 watts)
90 Watts/ 4 ohms 13 | 260 Ft. = ( 9 watts)
120 Watts/16 ohms 52 1352 Ft. = (12 wat/
180 Watts/ 8 ohms 26 1092 Ft. = (18 watt.,
external looks such as speaker systems. Because of the high
power developed by the TC/60, BIAMP cannot be responsible
for damage to any external components. We suggest in line
fuses be placed between the red output post and the + lead
of the speaker. Consult the speaker manufacturer for their
suggested proper fuse value. Littlefuse type 31000 in the
range of 1 to 4 amps are usually appropriate. The equation
Le = A may be used to find fuse rating. Where Z is the nomial
speaker impedance, PP is the speaker rated peak power and
A is the resultant fuse current.
ELECTROSTATIC SPEAKERS
Although the TC/60 is stable under all load conditions, the
performance of full range electrostatic may be optimized by
using the following matching circuit.
‘600 MF NP 110VAC
——red > > +
Full range
— VW — electrostatic
4 ohms 20W loudspeaker
black >... — —> =
FUSES
There are five fuses in each TC/60 professional stereo
amplifier. Four are located internally (two are on channel
A etched circuit board and two are on channel B etched cir-
cuit board). CAUTION: REMOVE THE LINE PLUG FROM THE WALL
SOCKET BEFORE SERVICE,
The internal fuses are serviced by removing the seven
screws from the top panel. Removal of the top panel will
reveal the channel A and channel B etched circuit boards.
The fuse holders are located at the right and left hand of
the board rear.
Repeated blowing of the primary line fuse may indicate high
line voltage, an output short on one of the channels or a
need for service.
Repeated blowing of the etched circuit board fuses indicates
a need for professional service.
SPECIFICATIONS
BIAMP TC/60 Dual Channel Power Amplifier
PHYSICAL SPECIFICATIONS
Height 3.50(in) 130.2 (mm)
Width 19 (in) 406.4 (mm)
Depth 9.5(in) 25.8 (mm)
Mounting EIA rack 2.25(in)
Weight 19(1bs) 41.8(kg)
overall
57 . 2 (mm) centers
net
ELECTRICAL SPECIFICATIONS
Line Voltage 120V AC 50-60 Hz
Line Fuse 6 Amp AGC
Line Cord 3 wire 50(in) 147 (mm)
DC Supply Fuse (4) 6 Amp AGC
ELECTRONIC SPECIFICATIONS
Power Output (per channel, 117V line, 20Hz to 20KHz)
60 watts RMS into 8 ohms
90 watts RMS into 4 ohms
(Both channels driven)
Total Harmonic Distortion (80KHz lowpass) *See Illustration A
Less than .01% (4 1KHz, 60W, 8
Less than .02% € 1KHz, 90W, 4
ohms
ohms
Less than .08% @ 20KHz, 60W, 8 ohms
Less than .15% @ 20KHz, 90W, 4 ohms
Intermodulation Distortion
(60Hz and 7KHz, 4:1 ratio)
*See Illustration B
Less than .03%, 100 mwatt to 60 watts into 8 ohms
Less than .10%, 100 mwatt to 90 watts into 4 ohms
Frequency Response
(Volume Control Maximum)
*See Illustration C
+0, -0.5 dB 15 Hz to 20KHz (4 1 watt
+0, -3 dB 10Hz to 50 KHz (4 1 watt
Power Response
+0, -0.2 dB (20 to 20KHz)
+0, -0.2 dB (20 to 20KHz)
60 watts into 8 ohms
90 watts into 4 ohms
ILLUSTRATION A
Ot =
05 —
2 _
s 0
L | | | | | | | | | |
10 - X 50 100 209 50 1K x sk 10K 20K SOK
FREQUENCY Hz
TOTAL HARMONIC DISTORTION AT 60 WATTS НАТО В
i —
s ILLUSTRATION 8
! —
05 —
„O1 er
o
2 005 we
E
|| | | | | | | | |
! 2 5 + 2 5 10 20 50 100 200
WATTS
% INTERMODULATION DISTORTION vs. POWER
INTO Br. (60 Hz & 7 KHz. 4) RATIO)
HLUSTRATION €
|
|
|
dB
Seh ho
ll {1111
|
|
|
|
NOTE CHANGE OF SCALE mm
| | Lo | | | 1
2 5 10 pu 50 100 20 50 100 200 500
Hz KHz
FREQUENCY RESPONSE | WATT INTO 8 3
OPERATING PRECAUTIONS
1) Repeated cycling of the thermal overload protection cir- |
cuit occurs when the amplifier is overheated. Since the TC/60
is designed to operate continuosly under specified conditions,
this can be remedied by reducing amplifier operating ambient
temperature to below 65°F (19°C).
2) Never operate the TC/60 into any device which appears
as a low frequency short circuit, such as a transformer, with-
out placing a non-polar (AC) capacitor or 200 volt rating in
the head to the red output post. Any impedance lower than
3 ohms is considered a short.
3) The ground circuits of the TC/60 are isolated to prevent
ground loops. Do not connect the ground lead of an output
cable to an input ground; this may cause oscillation.
4) Never parallel the output of channel A and channel B
by tying them together. Do not parallel the output of the
TC/60 with the output of any other power amplifier. Such
connections do not result in increased power, and may destroy
the output stage power transistors. Damage incurred in
paralleling operation is not.covered by the warranty.
MAINTANENCE
The TC/60 professional stereo amplifier has been carefully
constructed to provide years of trouble-free professional
service. The generously rated components used in the TC/60
have only one real enemy -- heat! To help your TC/60 survice
to happy geriatric self sufficiency, keep the heat sink area,
the back 3% inches of the chassis, free from dust and dirt.
A soft painters dust brush and a jet of clean, dry, oil-free
compressed air at no more than 30 pounds pressure are all
that are needed.
Use only a soft cloth dampened with a mixture of 10 parts
warm water and 1 part mild hair shampoo on the front panel
and painted surfaces. Some ordinary detergents leave a scum,
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BUILDING A SYSTEM
The TC/60 is only one member of the growing family of products
from BIAMP Systems designed with the professional user in mind.
BIAMP Stereo Mixing consoles feature low noise, high slewing
rate, low distortion, and wide frequency response. Six, eight,
twelve and sixteen channel stereo mixing consoles feature 18dB
of headroom, pre-fader monitor sends, transformer balanced
inputs, built-in reverb and the lowest TIM and SID ratings
in the industry.
BIAMP Graphic Equalizers are fully professional in their
features and are designed for both portable and fixed sound
reinforcement or studio and broadcast application. Single
and dual channel octave center equalizes with a + 15dB range
are available as well as a 27 channel 1/3 octave “equalizer
with a + 12dB range. Both balanced and unbalanced inputs
and outputs add to the versatility of these equalizers.
Electronic Crossovers are available from BIAMP in mono 2-way
and stereo 2-way/mono 3-way versions. Crossover frequencies
are continuously variable as is: overall. gain, These are all
building blocks of a professional sound reinforcement system,
and when used with one of the BIAMP professional stereo
amplifiers such as the TC/60, TC/120 or TC/225, will provide
professional. performance.
-12-
LIMITED WARRANTY
BIAMP SYSTEMS, INC. warrants to the original consumer purchaser
of each BIAMP product that the unit is free from defects in materials
and workmanship. This express warranty commences on the date of
purchase from an authorized BIAMP dealer and extends for one year.
Completion and return of the warranty registration card enclosed
with each unit within ten days of the date of purchase is a condition
precedent to coverage and performance under this express warranty.
EXCLUSIONS AND LIMITATIONS: This warranty will be VOIDED if
the serial number has been removed or defaced, or if the unit has
been subjected to abuse, alterations, attempted repair by any
person not authorized by warrantor to make repairs, accident, or
installation contrary to the warrantor's instructions. Cosmetic
blemishes, such as handles, feet, and knobs are not warranted.
All implied warranties, including the warranty of MERCHANTABILITY
are limited to the duration of this express warranty, and, if the
registration card is not promptly returned, the implied warranties
are limited to the duration of the express warranty if it had been
effective. In no event will BIAMP SYSTEMS, INC. be responsible
for incidental or consequential damages, except for injury to the
person.
HOW TO OBTAIN REMEDY: Carefully pack your BIAMP product and …
return it to one of the BIAMP Authorized Service Centers or write |
the BIAMP Customer Service Department at the address below for
instructions on how to return your unit to the factory. Pack a
letter with the unit explaining the nature of the problem and
giving your name and address. You are responsible for freight and
insurance charges to the Authorized Service Center or the factory.
WHAT BIAMP WILL DO: BIAMP will repair or, at its option,
replace each unit covered by this warranty. Units sent to the
factory will be returned to the owner freight collect. Units
brought to Authorized Service Centers will be held for pickup
by the owner for a period of time established by the individual
Authorized Service Center, or, at the owner's option, returned
to the owner freight collect.
This warranty gives you specific legal rights, and you may
also have other rights which vary from state to state. For
instance, some states do not allow limitations on how long an
implied warranty lasts, or the exclusion or limitation of
incidental or consequential damages, so the above limitations
or exclusions may not apply to you.
BIAMP CUSTOMER SERVICE DEPARTMENT
Biamp Systems, Inc. |
11000_S.W, 1lth _
Beaverton, OR 97005
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