TOA MT-S0301 User manual

TOA MT-S0301 User manual
INSTALLATION MANUAL
4. DIMENSIONAL DIAGRAM
MATCHING TRANSFORMER
MT-S0301
Never connect to a 170 Ω tap when using the speaker
on high impedance 100 V line. Otherwise, heat builds
up in the matching transformer, possibly causing a fire.
4-3.5 x 5
(4-0.14 x 0.2)
150 (6)
44 (1.73)
66 (2.6)
1. SAFETY PRECAUTIONS
150 (6)
Black
Red
Speaker
(rear)
Connector (primary)
Connector (secondary: 8 Ω)
5. MOUNTING PROCEDURES
Indicates a potentially hazardous situation which, if mishandled,
could result in moderate or minor personal injury, and/or property
damage.
Step 1. Remove 4 screws holding the blank panel to the speaker
and detach the panel.
Notes
• The lead wire is connected to 330 Ω tap at the factory.
• Make wiring to the tap before installing the
transformer into the speaker.
Note that the tap cannot be changed from the outside
once the transformer has been installed.
2. GENERAL DESCRIPTION
Blank panel
Machine screw
(M4)
The following table shows usable impedance.
Primary
impedance
High impedance
100 V line
High impedance
70 V line
170 Ω
Unusable
30 W
330 Ω
30 W
15 W
1kΩ
10 W
5W
• Install the unit in the specified speaker, as doing otherwise may
cause the matching transformer or the speaker to heat, resulting
in a fire.
• Leave the installation of the unit to your TOA dealer because the
installation requires expert experience and skills. Incorrect wiring
may cause the equipment to heat, resulting in fire.
• Avoid connecting to a 170 Ω tap when using the speaker on high
impedance 100 V line. Otherwise, heat builds up in the matching
transformer, possibly causing a fire.
Note
Take care not to pinch the lead wire between the blank
panel and speaker body when replacing the panel.
Max. 36 (1.42)
instructions in this section for correct and safe operation.
• Be sure to follow all the precautionary instructions in this section,
which contain important warnings and/or cautions regarding
safety.
• After reading, keep this manual handy for future reference.
CAUTION
Step 5. Replace the blank panel with the matching transformer
fixed in the speaker.
MT-S0301
75 (2.95)
• Before installation or use, be sure to carefully read all the
CAUTION
Unit: mm (inches)
53 (2.09)
Thank you for purchasing TOA Matching Transformer.
Please carefully follow the instructions in this manual to ensure
long, trouble-free use of your equipment.
Step 3. Connect a lead wire to the desired impedance tap.
Speaker
(rear)
Step 6. Attach the impedance indication label to the given place
in the speaker nameplate.
Select the indication label corresponding to the
impedance set in step 3 from 3 different labels.
Step 4. Disconnect the lead wire connectors and connect them
to the matching transformer.
Blank panel
4-1. Pull the lead wire out of the speaker and disconnect the
interlocked connectors.
Nameplate of the speaker
Machine screw
(M4)
Disconnect the connectors.
The MT-S0301 Matching Transformer (rated input: 30 W) is
designed to be installed in the speaker and used to convert the
low-impedance speaker into the high-impedance version.
Impedance indication label sheet
(accessory)
Speaker
3. SPECIFICATIONS
Rated Input
Primary Terminal
Secondary Terminal
Dimensions
Weight
30 W
High impedance 100 V Line:
330 Ω (30 W), 1 kΩ (10 W)
High impedance 70 V Line:
170 Ω (30 W), 330 Ω (15 W),
1 kΩ (5 W)
8Ω
75 (w) x 36 (h) x 53 (d) mm
(2.95" x 1.42" x 2.09")
370 g (13.05 oz)
Note: The design and specifications are subject to change without
notice for improvement.
• Accessory
Impedance indication label sheet ...................... 1
Step 2. Mount the matching transformer to the back side of the
blank panel with the machine screws and nuts attached
to the blank panel.
Nut (for M3)
MT-S0301
4-2. Connect the removed connectors to the connectors
from the transformer.
Note
The above figure shows an example for attaching the
indication label of 330 Ω.
MT-S0301
Blank panel
Machine screw
M3 x 10
Blank panel
Speaker
URL: http://www.toa.jp/
133-02-00126-00
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