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INSTALLATION MANUAL
MATCHING TRANSFORMER
MT-S0301
Thank you for purchasing TOA Matching Transformer.
Please carefully follow the instructions in this manual to ensure
long, trouble-free use of your equipment.
1. SAFETY PRECAUTIONS
•Before installation or use, be sure to carefully read all the
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.
Note: The design and specifications are subject to change without
notice for improvement.
4. DIMENSIONAL DIAGRAM
Indicates a potentially hazardous situation which, if mishandled,
could result in moderate or minor personal injury, and/or property
damage.
CAUTION
•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 Ωtap when using the speaker on high
impedance 100 V line. Otherwise, heat builds up in the matching
transformer, possibly causing a fire.
Rated Input 30 W
Primary Terminal High impedance 100 V Line:
330 (10 W) Ω(30 W), 1 kΩ
High impedance 70 V Line:
170 Ω(30 W), 330 Ω(15 W),
1 kΩ(5 W)
Secondary Terminal 8 Ω
Dimensions 75 (w) x 36 (h) x 53 (d) mm
(2.95" x 1.42" x 2.09")
Weight 370 g (13.05 oz)
133-02-00126-00
• Accessory
Impedance indication label sheet ...................... 1
2. GENERAL DESCRIPTION
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.
3. SPECIFICATIONS
Step 3. Step 5.Connect a lead wire to the desired impedance tap. Replace the blank panel with the matching transformer
fixed in the speaker.
Note
Take care not to pinch the lead wire between the blank
panel and speaker body when replacing the panel.
150 (6)
66 (2.6)
4-3.5 x 5
(4-0.14 x 0.2)
150 (6)
44 (1.73)
53 (2.09)
Max. 36 (1.42)
75 (2.95)
Unit: mm (inches)
5. MOUNTING PROCEDURES
Step 1. Remove 4 screws holding the blank panel to the speaker
and detach the panel.
Blank panel
Machine screw
(M4)
Speaker
(rear)
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.
MT-S0301
Blank panel
Machine screw
M3 x 10
Nut (for M3)
Never connect to a 170 Ωtap when using the speaker
on high impedance 100 V line. Otherwise, heat builds
up in the matching transformer, possibly causing a fire.
CAUTION
Connector (primary)
Connector (secondary: 8 Ω)
Black
Red
MT-S0301
Notes
•The lead wire is connected to 330 Ωtap 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.
The following table shows usable impedance.
High impedance
100 V line
Primary
impedance
High impedance
70 V line
Unusable170 Ω 30 W
30 W330 Ω 15 W
10 W1 k Ω 5 W
Step 4. Disconnect the lead wire connectors and connect them
to the matching transformer.
4-1. Pull the lead wire out of the speaker and disconnect the
interlocked connectors.
Speaker
Disconnect the connectors.
4-2. Connect the removed connectors to the connectors
from the transformer.
MT-S0301
Blank panel Speaker
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.
Machine screw
(M4)
Blank panel
Speaker
(rear)
Nameplate of the speaker
Impedance indication label sheet
(accessory)
Note
The above figure shows an example for attaching the
indication label of 330 Ω.
URL: http://www.toa.jp/

Produktspecifikationer

Varumärke: Toa
Kategori: högtalare
Modell: MT-S0301

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