TOA Electronics Stereo Amplifier IP 600D User Manual

OPERATING INSTRUCTIONS  
IP Series  
IP-600D  
IP-450D  
DUAL POWER AMPLIFIERS  
IP-300  
D
TABLE OF CONTENTS  
2
4
4
4
1. SAFETY PRECAUTIONS  
2. GENERAL DESCRIPTION  
3. FEATURES  
4. HANDLING PRECAUTIONS  
5. NOMENCLATURE AND FUNCTIONS  
Front panel  
Rear panel  
6. INSTALLATION  
7. CONNECTIONS  
8. CLEANING THE FILTER  
9. REMOVING THE HANDLE  
10. INSTALLING AN OPTIONAL  
MATCHING TRANSFORMER  
LT-101  
11. BLOCK DIAGRAM  
12. TABLE FOR PROTECTION CIRCUIT  
ACTIONS  
9
9
10  
10  
5
6
7
8
11  
11  
12  
13. APPEARANCE AND DIMENSIONS  
14. SPECIFICATIONS  
Please follow the instructions in this manual to obtain the optimum results from this unit.  
We also recommend that you keep this manual handy for future reference.  
TOA Corporation  
 
When the Unit is in Use  
When Installing the Unit  
Do not place heavy objects on the unit as this may  
cause it to fall or break which may result in  
personal injury and/or property damage. In  
addition, the object itself may fall off and cause  
injury and/or damage.  
Never plug in nor remove the power supply plug  
with wet hands, as doing so may cause electric  
shock.  
When unplugging the power supply cord, be sure  
to grasp the power supply plug; never pull on the  
cord itself. Operating the unit with a damaged  
power supply cord may cause a fire or electric  
shock.  
Make sure that the volume control is set to  
minimum position before power is switched on.  
Loud noise produced at high volume when power  
is switched on can impair hearing.  
When moving the unit, be sure to remove its power  
supply cord from the wall outlet. Moving the unit  
with the power cord connected to the outlet may  
cause damage to the power cord, resulting in fire  
or electric shock. When removing the power cord,  
be sure to hold its plug to pull.  
Do not operate the speaker for an extended period  
of time with the sound distorting. This is an  
indication of a malfunction, which in turn can  
cause heat to generate and result in a fire.  
Contact your TOA dealer as to the cleaning. If dust  
is allowed to accumulate in the unit over a long  
period of time, a fire or damage to the unit may  
result.  
Do not block the ventilation slots in the unit's cover.  
Doing so may cause heat to build up inside the  
unit and result in fire.  
If dust accumulates on the power supply plug or in  
the wall AC outlet, a fire may result. Clean it  
periodically. In addition, insert the plug in the wall  
outlet securely.  
Avoid installing the unit in humid or dusty locations,  
in locations exposed to the direct sunlight, near  
the heaters, or in locations generating sooty  
smoke or steam as doing otherwise may result in  
fire or electric shock.  
Switch off the power, and unplug the power supply  
plug from the AC outlet for safety purposes when  
cleaning or leaving the unit unused for 10 days or  
more. A fire or electric shock may result.  
When unpacking or moving the unit, be sure to  
handle the unit with two or more persons. Falling  
or dropping the unit may cause personal injury  
and/or property damage.  
The lighting flash with arrowhead within a  
triangle is intended to tell the user that  
parts inside the product are a risk of  
electric shock to persons.  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
TO REDUCE THE RISK OF ELECTRICAL  
SHOCK, DO NOT REMOVE COVER. NO  
USER SERVICEABLE PARTS INSIDE.  
REFER SERVICING TO QUALIFIED  
SERVICE PERSONNEL.  
The exclamation point within a triangle is  
intended to tell the user that important  
operating and servicing instructions are  
in the papers with the appliance.  
3
 
2. GENERAL DESCRIPTION  
TOA's IP series dual power amplifiers feature high durability, high quality sound and high output power (IP-  
300D: 300 W, IP-450D: 450 W, IP-600D: 600 W - when a 4 load connected). Input/output levels and other  
functions can be remotely controlled from external equipment. (An interface unit is required. For details,  
contact your TOA dealer.) The amplifier is ideal for use in store sound systems, permanently-installed sound  
systems, and other sound systems.  
3. FEATURES  
Small in size (2-rack unit size) and light in weight.  
Variable forced-air cooling system changes the speed of a fan as the heat sink temperature varies, keeping  
fan operation noise low.  
The input is an electrically-balanced input, which can be converted into a transformer-balanced input using  
an optional input transformer.  
Three different output modes are made available for selection: Stereo, BTL and parallel outputs. In parallel  
mode, the input level of each channel can be set independently.  
An internal limiter limits the current during overload, and a protection circuit disconnects the output during an  
output short circuit by detecting the levels of both voltage and current. The protection circuit also  
disconnects the output during an abnormal temperature rise.  
Large output screw terminals (10 mm in width) allow connection of solderless terminals with diameter of 9.5  
mm. Because two of each of positive (+) and negative (-) terminals are provided, even the four-core  
speaker cables can be connected.  
Control I/O terminal. Input and output levels can be remotely controlled or monitored from external  
equipment. (An interface unit is required. For details, contact your TOA dealer.)  
Detachable carrying handles even after the unit is installed in a rack.  
A push-lock level control and its cover prevent accidental setting changes after installation.  
An AC inlet simplifies the system maintenance after installation.  
4. HANDLING PRECAUTIONS  
Line Source: 120 VAC 10%, 60 Hz  
Never connect the AC power cord to any other line voltage than that specifically designated.  
To avoid oscillation, keep the input cable away from the output cable. Particular care must be exercised  
when mounting the unit in an equipment rack.  
In some installations, a ground loop is formed and such noise as hum may be generated. In such cases, cut  
the loop by removing a shorting metal piece attached to the ground terminals on the rear panel. The noise  
can be reduced.  
These power amplifiers have a filter in their front panel. Clean the filter as frequently as possible. If it  
becomes clogged, heat cannot escape from the inside of the unit.  
Never connect two amplifier outputs in parallel under any circumstances.  
4
 
5. NOMENCLATURE AND FUNCTIONS  
[ Front Panel ]  
Power switch  
Power is switched on  
Carrying handle  
Can be detached. Refer to p.9 when removing.  
and off  
with each  
depression of this switch.  
Input level control (pushlock type)  
Power indicator lamp  
Clicks at each dB mark on the scale when rotated. This  
knob is recessed to avoid accidental setting changes.  
Pressing on the knob raises it above the front panel to  
permit level adjustment.  
Lights green when the power is switched on.  
Signal indicator lamp  
Lights green regardless of the input level control setting  
when there is an input of a signal with a level  
exceeding -30 dB.  
[Precautions]  
When the level control switch on the rear panel is set to  
ON, the input level control cannot be used because it is  
bypassed.  
Peak indicator lamp  
Lights red if an output signal clips (distortion occurs).  
Level control cover  
Protection circuit indicator lamp  
An input level can be fixed by removing the input  
level control knob from the front panel and  
attaching the supplied control cover.  
Lights red for three seconds after the power is supplied  
to the unit, and then goes out. This lamp also lights red  
when a protection circuit is activated. Refer to p. 11  
"Table for protection circuit actions" for details.  
[Note]  
Keep the removed input level control knob for  
future use.  
Level control bypass indicator lamp  
Lights yellow when the level control switch  
(refer to  
p.6) is in the ON position. While this lamp remains lit,  
the input level control cannot be used because it is  
bypassed.  
5
 
[Rear panel]  
Input terminal  
Level control switch  
Usually, set this switch to OFF. When an interface unit  
is connected, shifting this switch to ON permits external  
input level adjustment.  
Electrically-balanced input terminals. The 3P screw  
terminal is connected in parallel with a balanced phone  
jack.  
Also, the input can be converted into a transformer-  
balanced input using an optional matching transformer  
LT-101.  
[Precautions]  
No sound is output if the level control switch is set to  
ON without connecting an interface unit. Confirm the  
switch position before switching on the power. Be sure  
to switch off the power when changing control switch  
settings.  
3P screw terminal  
H:HOT  
C:COLD  
E:GROUND  
Control I/O terminal  
Balanced phone jack  
T (Tip): HOT R (Ring): COLD S(Sleeve): GROUND  
Connects to the an interface unit when monitoring or  
performing remote controls from external equipment.  
For details, contact your TOA dealer.  
Phone jack  
Phone plug  
[Precautions]  
No other unit other than an interface unit must be  
connected to the terminal. Be sure to switch off the  
power when connecting an interface unit.  
Output mode selector switch  
Output terminal (with a protection cover)  
Connect speaker cables to these terminals. Because  
the upper terminals are connected in parallel with the  
lower terminals, both terminals can be used  
simultaneously. Refer to p.8 for speaker cable  
connections.  
Selects STEREO, BTL or PARALLEL mode.  
STEREO mode  
Channels 1 and 2 are operated independently. (The  
unit functions as a normal stereo amplifier.) Channel  
1 input signal goes to Channel 1 output, and  
Channel 2 input signal goes to Channel 2 output.  
[Precautions]  
Be sure to switch off the power when connecting the  
speaker cables. Never connect two amplifier outputs in  
parallel under any circumstances.  
BTL mode  
The unit functions as a monaural amplifier with 1  
input and 1 output. Channel 1 input signal goes to  
both output BTL (+) and (-) terminals.  
Grounding terminal for signals  
When the power amplifier is connected to other  
equipment, grounding sometimes creates a loop,  
producing hum noise. This loop can be cut and noise  
reduced by removing a shorting metal piece connecting  
two terminals.  
PARALLEL mode  
The unit functions as a monaural amplifier with 1  
input and 2 outputs. Channel 1 input signal goes to  
the outputs of both Channels 1 and 2. Input signal  
levels of channels 1 and 2 can be set independently.  
ACinlet  
[Precautions]  
Use only Channel 1 input terminal when in BTL or  
PARALLEL mode. Do not use Channel 2 input terminal.  
Rear mounting bracket  
Confirm the position of the output mode selector switch  
before switching on the power. Be sure to switch off the  
power when changing mode switch settings.  
6
 
6. INSTALLATION  
Carefully note heat radiation when installing the unit. These power amplifiers are equipped with a cooling  
fan. To avoid heat buildup, ensure that the rear of the unit is at least 10 cm away from the wall surface.  
When mounting the unit in the rack, the inside of the rack must be well ventilated. To accomplish this, keep  
the rear side of rack open (no panel is mounted), and mount a ventilation panel of over 1-unit size in the  
uppermost and lowermost rack positions on the rack front.  
When installing in the rack, be sure to mount a perforated panel of over 1 -unit size between the amplifiers.  
See the figure below.  
Robust structure is one of the unit's main features. However, if the strength is particularly needed when  
installing the unit in the rack, use the supporting runner YA-706 (option) for the safety purposes.  
7
 
7. CONNECTIONS  
1. Switch off the amplifier power.  
2. Unscrew the output terminal cover.  
3. Strip 10 mm of insulative jacket from the end of the speaker cable,  
as shown in the figure at right.  
4. Connect speaker cables to the output terminals.  
5. Fit the output terminal cover in place.  
[Precautions] Be sure to fit the output terminal cover in place.  
Take care that the naked wires of the speaker lines do not contact the unit's chassis.  
Refer to the figures below for connections for each output mode.  
Since the upper output terminals are connected in parallel with the lower terminals, both terminals can be  
used simultaneously.  
Output terminal  
Output mode switch  
STEREO mode  
BTL mode  
Output terminal  
Output mode switch  
PARALLEL mode  
Output mode switch  
Output terminal  
[Precautions]  
The total impedance of the connected speakers must be over 4 (STEREO and PARALLEL modes) or over 8  
(BTL mode). If the impedance of the connected speakers is smaller than those stated above, equipment failures  
may result.  
Refer to the table below when using an optional output transformer.  
Power amplifier  
IP-600D  
Output transformer(option)  
MT-600M  
MT-450M  
IP-450D  
MT-300M  
IP-300D  
[Precautions]  
Do not connect the output transformer under any circumstances when in BTL mode. Both the amplifier and  
transformer may fail.  
8
 
8. CLEANING THE FILTER  
1. Switch off the amplifier power.  
2. Pull the filter from the front panel as shown in the figure.  
3. Clean the filter.  
4. Fit the filter in place.  
[Precautions] Make sure that the fan is turned off when removing the filter.  
Filter  
9. REMOVING THE HANDLE  
1. Switch off the amplifier power.  
2. Remove the handle cover.  
3. Remove two screws holding the handle to the amplifier.  
4. Remove the handle.  
Handle  
5. Install the supplied screws (M4x20).  
Handle cover  
6. Attach the handle cover to the unit.  
Handle cover  
9
 
10. INSTALLING AN OPTIONAL MATCHING TRANSFORMER LT-101  
[ CAUTION ]  
THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY.  
TO AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT  
CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.  
REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL.  
1. Attach sleeves supplied with the transformer to the transformer.  
2. Remove case fixing screws to remove the case.  
3. When installing the transformer at channel 1, disconnect connector CN323 (with a lead) from CN324. Insert  
CN323 into the transformer connector marked with IN, then insert the connector (with a lead) from the  
transformer into CN324. When installing the transformer at channel 2, disconnect connector CN326 (with a  
lead) from CN327. Insert CN326 into the transformer connector marked with IN, then insert the connector  
(with a lead) from the transformer into CN327.  
4. Mount the transformer to the rear panel.  
5. Replace the case.  
[Precautions] Make sure that the power is switched off when installing the transformer.  
11. BLOCK DIAGRAM  
10  
 
12. TABLE FOR PROTECTION CIRCUIT ACTIONS  
Reset  
Remedy  
Indicator  
Action  
Symptom  
Automatically reset if 4  
(STEREO/PARALLEL) or  
Excessive current flow  
duetooverload  
Remove overload.  
Current limiter operates Peak indicator lights.  
when load resistance is  
under 2.5 (STEREO/  
PARALLEL) or 5  
8
(BTL) load is  
connected.  
(BTL).  
Switch power off, connect  
correct load, and switch  
power on.  
Short circuit (under 0.5  
)
Protection circuit  
indicator lights.  
Check short circuit of  
speakers and lines.  
Current limiter operates.  
Speaker loads cut by  
output relay.  
Heat sink temperature rise  
Unusual DC voltage output  
Check ventilation and  
overload.  
Automatically reset if  
temperature drops.  
Protection circuit  
indicator lights.  
Speaker loads cut by  
output relay.  
Switch power off, then  
remove cause.  
Protection circuit  
indicator lights.  
Contact your TOA  
dealer.  
Speaker loads cut by  
output relay.  
13. APPEARANCE AND DIMENSIONS  
Unit: mm  
11  
 
14. SPECIFICATIONS  
Model No.  
Output 20 Hz - 20 kHz  
STEREO RL=4  
IP-600D  
IP-300D  
IP-450D  
600 W  
400 W  
1200 W  
300 W  
200 W  
600 W  
450 W  
RL=8  
300 W  
900 W  
BTL  
RL=8  
Frequency Response  
20 Hz - 20 kHz (+0 dB, -0.5 dB)  
Total Harmonic Distortion  
8
,1kHz  
0.01%  
0.1%  
8
, 20 Hz - 20 kHz  
Intermodulation Distortion  
60 Hz : 7kHz= 4:1, 8  
0.03%  
Input Sensitivity  
(8 , input level control in maximum position)  
+ 5.3 dB (1.42 V) 0.5dB  
+2.2 dB (1.00 V) 0.5dB +4.0 dB (1.23 V) 0.5dB  
Voltage Gain  
32 dB  
Input Impedance  
10 k (electrically-balanced)  
110 dB (at 26 dB gain)  
103dB(at32dBmax.gain) 105 dB (at 32 dB max. gain)  
Under 40 °C : Stop  
112 dB (at 26 dB gain)  
107dB (at32 dB max. gain)  
Signal-to-Noise Ratio  
20 Hz - 20 kHz  
Cooling Fan Speed  
108 dB (at 26 dB gain)  
40 °C-75 °C : Low to high speed (variable)  
Over 75 °C : High speed  
Input (CH1 , CH2) : screw terminal, balanced phone jack  
Connection Terminal  
Output  
: Terminal with screw/washer assembly  
CONTROL I/O  
Power supply  
: 8P DIN  
: AC inlet  
POWER (green), SIGNAL x 2 (green) , PEAKx2 (red) , PROTECT x 2 (red) , VR BYPASS x 2 (yellow)  
Indicator  
120VAC 10%, 60 Hz  
Power Source  
Power Consumption  
Based on UL/CSA standards  
Finish  
444 VA  
984 VA  
18 kg  
648 VA  
Panel: Zinc diecasting, black paint  
Case: Colored steel plate, black  
482 (W) X 102.4 (H) X 473.5 (D) mm  
13 kg  
Dimensions  
Weight  
[Notes]  
0 dB=0.775 Vrms  
The above specifications are subject to change without notice.  
Accessories  
Screw M4x20  
4
1
2
Power cord (2.5 m)  
Level control cover  
Instruction manual  
1
Printed in Japan  
133-12-566-7A  
TOA Corporation  
 

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