ITC PRECISION Series User manual

OWNER'S MANUALOWNER'S MANUAL
PROFESSIONAL POWER AMPLIFIERS
TS-200PI/TS-350PI/TS-500PI/TS-700PI
PRECISION SERIES

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BACK PANEL
CONNECTIONS
SPECIFICATIONS
DIMENSIONAL
DESCRIPTION
FEATURES
FRONT PANEL
CONTENT

TTENTION: This unit must be protected from moisture because of the risk of
fire and the possibility of electrical shock.
1. Make sure that you have the correct mains voltage. Only operate the unit at the
mains voltage marked on the rear panel.
2. Make sure that nothing, especially metal objects, are inserted into the
amplifier. This could result in a severe electric shock or malfunction.
3. If the unit is subjected to extreme fluctuations of temperature, e.g. on being
transported from outside into a heated room, condensation can form. The unit
should not be used until it has reached room temperature.
4. In the event of water or any other fluid being accidentally spilt on the unit,
switch the unit off immediately and send it to a qualified service workshop for
inspection.
5. Make sure that the unit is always well ventilated and never exposed to direct
sunlight.
6. Do not use sprays to clean the unit as they have a detrimental effect on the unit
and Could ignite ITC denly.
WARNING

Thank you very much for choosing an ITC PRECISION SERIES amplifier. We are sure it will
give you many years of satisfying performance.
ITC power amplifiers of the PRECISION SERIES meet the stringent requirements of tough to-
uring applications. They are protected against over-temperature, overload, shorted outputs,
radio frequency interference and DC faults. The power transistors are protected from damage
from reverse feeding of electrical energy by means of an additional special protective circuit.
For the so-called soft-start, the power outputs are switched on delayed via relays. An inrush
current limiter circuit prevents the mains fuses from being blown.
Maximum precision is also guaranteed as regards mechanical construction and finish. The
robust steel chassis features remarkable torsion resistance and-is specially designed to cope
with the tough wear and tear associated with going on tour. Thermal stability is guaranteed by
several low noise 3-stage fans which also means that they can be used inside the studio. Comp-
arator circuits constantly compare the power amplifiers' input and output signal and control the
Iimiters under non-linear operating conditions.They protect the loudspeakers from overload due
to power stage clipping. The PRECISION S-ERIES power amplifiers feature excellent transmi-
ssion properties. The power amplifier topology also makes for extremely low distortion rates.
Distortion factor (THD), intermodulation distortion (SMPTEIM) and transient intermodulation
distortion (DIM 30 and DIM 100) are so low that they are only detectable with the most sophis-
ticated measuring equipment.Generously dimensioned power supplies with low-leakage toroidal
-core transformers provide considerable headroom well above the nominal ratings. V/I foldback
limner circuits were deliberately not included in the PRECISION SERIES power amplifiers to
facilitate operation at complex loads up to a phase angle of +/- 90.
The inputs are electronically balanced on XLR connectors. (Isolation transformers can be re-
trofitted). Direct Outs in the form of XLR connectors (male), to loop the signal through, are also
standard features. The modes DUAL/Stereo can be selected via the Input Routing Switch. Fur-
thermore, the PRECISION SERIES power amplifiers can also be operated in "Bridged" mode.
The front panel accommodates the dB-calibrated input Gain controls which are designed as
especially precise and safe-to-operate detented potentiometers. The LED display provides in-
formation about the power amplifers' operating status. For the two channels, they demonstrate
readiness to operate, whether there is a signal at the input or output, when the Limiters have
been activated and whether one of the protective features has been triggered. The power out-
puts Channel A, Channel B and Bridged Out are available on Speakon connectors. The rear
side of the unit accommodates the ON/OFF switches for the integrated Hi and Lo cut filters, a
groundlift switch which separates the housing from the circuit ground thus helping to prevent
hum loops and the operating modes selector to mono bridged operation. They also feature ex-
tremely quiet fans with front-to-rear airflow, facilitating operation in large and narrow amplifier
racks.
This Owner's Manual is meant to help you familiarize yourself with all the PRECISION SERIES'
other features. Please read it through carefully and we guarantee that your new power amplifier
of the PRECISION SERIES from ITC will give you great pleasure.
( PAGE 1 )
DESCRIPTION
DESCRIPTION

Features:
1. Input sensitivity adjustment.
2. Three operating modes: bridging, stereo and parallel.
3. Enter seat, ground pin ground and suspension control.
4. XLR and 6.35 inputs dual seat.
5. CHA and CHB signal LINK output.
6. With signal indication, protection instructions, instruction limiter, power indicator.
7. CHA and CHB volume control.
8. CHA, CHB and bridging SPEAKON output.
9. AC input over current protection.
10. The amplifier has short circuit protection, overload protection, DC protection and overheating
protection, transformer overheating protection.
FEATURES
( PAGE 2 )

Front panel:
FRONT PANEL
1. A channel volume control
A potentiometer controls the output volume of amplifier channel A. Clockwising to increase the
volume, whereas the volume decreases.
2. Power Switch
After the switch is turned on, POWER LED lights after a few seconds. A ?ga?sound can be heard
inside relay.
3. B channel level control
A potentiometer controls the output volume of amplifier channel B. Clockwising to increase the
volume, whereas the volume decreases.
4. POW- power supply indicator
Lighted LED indicates that the power supply is on.
5. CLP- clipping indicator
When the yellow LED lights,which means the output signal has been distorted.Indicating that the
input signal is too large,and the input signal should be decreased.
6. PRO- protection indicator
At the first three seconds of turning on the machine,the protecting indicator lights in red color.If
the whole self-test is normal,then the machine will work and protecting indicator lights off after
three second.If the protecting indicator keep lighting, then the machine is faulty, please contact
your dealer.
7. SIG- signal indicator
When the machine inputs signal normally,the indicator lights in green color. When the machine
fails or the signal is not entered correctly, the indicator lights off.
( PAGE 3 )
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Back panel:
BACK PANEL
1.A / B channel balances LINK output.
2. Sensitivity Input switch.
There are three positions 1.44V, 1V and 0. 775V (see rear panel diagram).
3. B-channel amplifier output connector.
4. The bridge output connects speaker.
5. AC power input.
Connected to the mains supply, please check if the use voltage is consistent with the marked 220V.
6. Switch sifts from ground and suspension control.
7.A / B channels of balanced and unbalanced inputs.
8. The bridge, stereo, and then switch.
9. A channel amplifier output connector.
10. Overload protection device.
( PAGE 4 )
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Amplifier output connector:
Wiring method is as follows:
+1; +2 positive output.
1; -2 negative output.
Note:
To avoid over-heat protection caused by the clog of fan hole, the dust-proof net on the panel should
be removed and cleaned.
The cleaning method : first remove the four screws on the panel, take out and clean the dust-proof
net. After clean and dry the dust-proof net and put it back to original position.
POWER AMPLIFIER INPUT CONNECTORS:
Connection methods:
XLR connector is the connector for balancing transmission signal.
The definition of each input pin is:
PIN 1: Ground
PIN 2: Signal Hot End
PIN 3: Signal Cold End
For unbalanced input method, PIN 1 and PIN 3 are short-circuiting. Input sensitivity is 0dB (0.775V).
Input Link
Pin 1+and
Pin 1-
Pin 2+and
Pin 2-
Speakon Pin1 connection
+1
-1
+1
-1
Speakon Cable,Speakon, 2 conductors
OUTPUT INPUT
CONNECTIONS
( PAGE 5 )

Connections:
CONNECTIONS
( PAGE 6 )
Microphone
Equalizer
Speaker Speaker

( PAGE 7 )
SPECIFICATIONS
Model
Output Power
Stereo/parallel 8
Stereo/parallel 4
Bridging 8
SNR
Frequency Response
Input impedance
Input sensitivity
Separation
Distortion
Damping factor
Size
Weight
200W X 2
TS-200PI TS-350PI TS-500PI TS-700PI
350W X 2 500W X 2 700W X 2
300W X 2 530W X 2 730W X 2 1050W X 2
600W 1060W 1460W 2100W
<-90dB <-90dB <-95dB <-95dB
20Hz-20KHz(+0dB/-3dB)
>20K
0.775V/1V/1.44V
>70dB
<0.05%
>200
484X395X88mm 484X465X88mm
15.8Kg11.2Kg 12.6Kg 17.9Kg

Keep the unit’s all sides over 10cm away from objects that may obstruct air flow to prevent
the unit’s internal temperature rise.
88
395
88
430
88
484
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94
( PAGE 8 )
UNIT :mm
DIMENSIONAL
Over 10cm Over 10cm
Over 10cm

PROFESSIONAL POWER AMPLIFIERS
PRECISION SERIES
Version V0.1