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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.

SS MTC-CBT-70T

CRP

01/13

䉴MTC-CBT-70T Bolt-On Transformer Module for CBT 70 Models

Dimensions

JBL Professional

8500 Balboa Boulevard, P.O. Box 2200

Northridge, California 91329 U.S.A.

www.jblpro.com

[3.4] 70

[2.8]

[2.5]

114

[4.5]

157

[6.2]

128

[5.0]

Wiring Diagram

Out to

CBT Input

Terminals

Connect “–” to COM

and “+” to

proper input tap.

70V

100

COM(–)120W60W30W15W

120W60W30W NC

(–)

COM(–)

( )+

Transformer Wire Color Code

Green

Yellow

White

Blue

Purple

Orange

Black

N/C (none)

In from

70V/100V

Amplier

CONNECTION:

Mounting onto Speaker

Shown mounted to top insert points of CBT 70J-1.

Produktspecifikationer

Varumärke:	JBL
Kategori:	Inte kategoriserad
Modell:	MTC-CBT-70T
Bredd:	170 mm
Djup:	170 mm
Blåtand:	Ja
Processormodel:	E2-2000
Wi-Fi-standarder:	802.11a, 802.11b, 802.11g
Bluetooth-version:	4.0
Grafikadapter:	Radeon HD 7340
Ethernet LAN:	Ja
Maximal upplösning:	1920 x 1200 Pixels
Typ av strömkälla:	ATX
Medföljande kablar:	SATA
Antal USB 2.0-portar:	4
Antal HDMI-portar:	1
Mikrofon, linjeingång:	Ja
Antal Ethernet LAN (RJ-45)-portar:	1
Hörlursutgångar:	3
HDCP:	Ja
Antal portar USB 3.2 Gen 1 (3.1 Gen 1) Typ A:	2
Processoruttag:	BGA 413 (Socket FT1)
PCI Express-kortplatsversion:	2.0
PCI Express-konfigurationer:	1x4
Processorfabrikant:	AMD
Maximalt internminne:	16 GB
Inbyggd grafikadapter:	Ja
Ljudutgångskanaler:	7.1 kanalen
ETC:	Nee
Ethernet-gränssnittstyp:	Gigabit Ethernet
DVI-I-portar:	1
Chipset moderkort:	AMD A50M FCH
Typ av minnesplats:	DIMM
Ljudchip:	Realtek ALC898
PCI Express x16-platser:	1
Grafikkortsfamilj:	AMD
S/PDIF-utgång:	Ja
Typ av kylning:	Actief
Minneskanal:	Eenkanaals
Gränssnitt för lagringsenheter som stöds:	SATA II, SATA III
PS/2-port(ar):	1
Komponent för:	PC
LAN-kontroller:	Realtek RTL8111F
Antal SATA III-kontakter:	5
Icke-ECC:	Ja
Vakna på LAN:	Ja
Kompatibla processorer:	AMD E2
Antal eSATA-portar:	1
Minnestyper som stöds:	DDR3-SDRAM
Max. antal SMP-processorer:	1
Wifi:	Ja
Moderkort chipset familj:	AMD
Moderkorts formfaktor:	mini ITX
Antal minnesplatser:	2
Minnesklockhastigheter som stöds:	1066,1333 MHz
BIOS-typ:	UEFI AMI
BIOS-minnesstorlek:	64 Mbit
ACPI-version:	2.0a
Stöd för parallell bearbetning:	Niet ondersteund
Anslutning för CPU-kylare:	Ja
Anslutningar för husfläktar:	1
ATX-strömkontakt (24-stift):	Ja
USB 2.0-anslutningar:	2
Anslutning för ljudpanel på framsidan:	Ja
S/PDIF-ingång:	Nee
Obuffrat minne:	Ja
USB 3.2 Gen 1 (3.1 Gen 1) anslutningar:	1
Chassiintrångsanslutning:	Ja
S/PDIF uitgang:	Ja
Diskret grafikstöd:	Ja
WiFi-AP antennuttag:	2
Dual Link DVI:	Ja
Rensa CMOS-bygel:	Ja
Anslutningar för EATX nätaggregat:	1