JBL MTC-CBT-70T Manual

JBL Ikke kategoriseret MTC-CBT-70T

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Side 1/2

MTC-CBT-70T

Bolt-On Transformer

Module for CBT 70 Models

Professional Series

Key Features:

䉴

Adapts the CBT 70J-1 (and 70JE-1)

for Use on Distributed Speaker

Lines

䉴

120W, 60W, 30W for 70V or 100V

(plus 15W for 70V)

䉴

Bolts onto Back of CBT 70J-1 or

70JE-1 Speaker

䉴

Gland Nuts Provide Water Tight

Seal

Applications:

MTC-CBT-70T is a bolt-on

transformer module to adapt

CBT 70J-1 and CBT 70JE-1 (and

CBT 70J-1/JE-1 arrays) for use on

distributed loudspeaker lines. It

allows long cable runs and multiple

speakers to be driven from a single

distributed system ampliﬁer channel.

Transformer taps include 120W,

60W, and 30W for 70V and 100V

distributed lines, plus 15W for 70V

only.

Connections are made via

customer-supplied cable to screw-

down terminals inside the enclosure.

Two gland nuts are provided – one

for the cable into the enclosure from

the ampliﬁer and one for the cable

from the enclosed terminal strip to

the input terminal of the loudspeaker.

The gland nuts form a water-tight

seal when used with round jacketed

cable with outside diameter between

4.0 mm (0.16 in) and 9.0 mm

(0.36 in).

The tap selection is made via the

terminal connection of the cable from

the power ampliﬁer to the

appropriate terminals on the internal

terminal strip.

Mounting holes are provided that

ﬁt via two 6 mm screws to any of the

two side-by-side insert points on the

back of the CBT 70J-1 or CBT 70JE-1

cabinet.

Note that MTC-CBT-70T extends

86 mm (3.4 in) from the back of the

CBT cabinet.

Available in black or white (-WH).

Speciﬁcations:

Transformer Taps: 120W, 60W, 30W (and 15W at 70V only)

Connection: CE-compliant barrier strip terminals. Terminals accept up to

8 mm outside 4 mm inside open-lug (#6 or #8) plus bare wire

up to 2.5 mm2(12 AWG).

TERMINALS:

Terminal 1 = Common (black wire from transformer)

Terminal 2 = 120W @ 70V, N/C @ 100V (orange wire from transformer)

Terminal 3 = 60W @ 70V, 120W@100V (purple wire from transformer)

Terminal 4 = 30W @ 70V, 60W @ 100V (blue wire from transformer)

Terminal 5 = 15W @ 70V, 30W @ 100V (white wire from transformer)

Terminal 6 = N/C (no wire from transformer)

Terminal 7 = + Output to loudspeaker + terminal (yellow wire from

transformer)

Terminal 8 = – Output to loudspeaker - terminal (green wire from

transformer)

Maximum Insertion Loss = Less than 1 dB at any tap.

Gland Nuts: Two total. One gland nut by the transformer selection

terminals for cable from ampliﬁer and one gland nut by the

transformer secondary terminals (green and yellow wires) for

output to speaker terminals. It is recommended to orient gland

nuts toward bottom of enclosure.Watertight seal requires

round jacketed cable with outside diameter between 4.0 mm

(0.16 in) and 9.0 mm (0.36 in).

Mounting to Speaker Cabinet: Two holes in the back of the enclosure 70 mm (2.75 in) apart.

Insert included 6 mm screw from inside MTC-CBT-70T

enclosure, using 1 ﬂat washer and 1 lock washer, into the

side-by-side M6 insert points on the back of the CBT70J-1 or

CBT70JE-1 cabinet.

Enclosure Material: Fiberglass ﬁlled ABS.

Environmental Capability: IP-55 rated, per IEC529. UV, moisture and salt-spray resistant.

Agency Rating: Transformer UL registered per UL1876, Isolating Signal and

Feedback Transformers for Use in Electronic Equipment.

Dimensions (H x W x D): 157 x 114 x 86 mm (6.2 x 4.5 x 3.4 in) including gland nuts.

128 mm (5.0 in) enclosure height for enclosure only.

Net Weight: 1.13 kgs (2.5 lbs)

Shipping Weight: 1.36 kgs (3.0 lbs)

Included Accessories: Two 6 mm (x 15mm length x 1.0 thread pitch) bolts, ﬂat

washers & lock washers

JBL continually engages in research related to product improvement. Some materials, production methods and design

reﬁnements are introduced into existing products without notice as a routine expression of that philosophy. For this

reason, any current JBL product may differ in some respect from its published description, but will always equal or

exceed the original design speciﬁcations unless otherwise stated.

Cable not included.

Produkt Specifikationer

Mærke:	JBL
Kategori:	Ikke kategoriseret
Model:	MTC-CBT-70T

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