Toa M-900MK2 User manual

THE TOA 900 SERIES are widely
recognized as the industry standard
in installed sound system amplifi-
cation. When reliability and per-
formance are critical – such as in
paging and music distribution for
airport, hospital, and industrial
sound systems – you can count on
the TOA 900 Series to perform
consistently, day-in and day-out.
The M-900MK2 Mixer/Pre-amplifier
is engineered for high performance
with wide frequency response,
very low noise and distortion,
and excellent output regulation.
Eight module slots allows you to
easily configure custom configu-
rations using TOA plug-in modules
with an extensive array of features
and connector types. With the
rear-panel Bridge In/Out jack, you
can increase the input capacity by
connecting a second mixer or
mixer/amplifier. Outputs include
a balanced, transformer-isolated,
line-level output for connection
to an external amplifier and an
unbalanced auxiliary output.
Multiple paging priorities are
easily configured using optional
mute-type modules activated by
external switch-closure or mute-
send modules. Other features
include bass/treble controls and
remote master volume terminals.
The M-900MK2 is UL and cUL
Listed and carries a five year
warranty.
 Modular Eight Channel Mixer/Pre-
amplifier for paging, background/
foreground music distribution and
music/messaging-on-hold.
 Proven TOA Quality and Reliability
Engineered for High Performance
with wide frequency response, very
low noise and distortion, and excel-
lent output regulation.
Eight Module Slots accept any combi-
nation of TOA plug-in modules for cus-
tom system configurations.
Balanced, Transformer-Isolated
Output with selectable impedance,
screw terminal connector and protec-
tive cover plate.
Dual Mute Bus permits multiple levels
of paging priority using optional
mute-type modules.
External Mute Terminals for activating
mute function with external switch-
closure.
Remote Master Volume Terminals for
control with an external 10k ohm
linear-taper potentiometer.
Individual Channel and Master
Volume Controls
Bass/Treble Tone Controls with tone
defeat switch.
Auxiliary Output for connecting an
external mixer or recording device.
Bridging Input/Output for input
expansion or recording device.
Normal, Clip, Power, Protect, and
Signal Indicators provide unit status.
Rear Panel AC Convenience Outlet for
powering external equipment.
Turn-On Delay disconnects output
during power-up.
Over-current and Thermal Protection
Circuitry prevents potential damage
from overload, short-circuit or over-
heating.
Volume Control Security Knobs
Included (4)
Optional Rack-Mount Kit
UL / cUL Listed
Five Year Warranty
H IGHLIGHTS
O
PTIONAL A CCESSORIES
Plug-in Modules (see individual module specifications)
MB-25B Rack-mount Kit (2 RU)
PF-511 Perforated Rack Panel (2 RU)
YA-920 Volume Control Security Knob
900 Series Module Guide available from http://www.toaelectronics.com
900
S ERIES
M-900MK2
M
IXER /
P
RE -A
MPLIFIER

A PPLICATIONS
A/V Rentals
Airports
Audio/Visual
Auditoriums / Theatres
Banks
Bars / Lounges / Nightclubs
Boardrooms
Business Music
Conference Facilities
Convenience Stores
Educational Facilities
Fitness Clubs / Gymnasiums
Hotels / Hospitality
Houses of Worship
Industrial / Warehouses
Museums
Music Distribution
Offices
Public Address
Restaurants
Retail Stores
Theme Parks
Training Rooms
Type 8-channel mixer/pre-amplifier
Output Power +4 dBm, +20 dBm (max.)
Power Bandwidth 30 - 20k Hz, +20 dBm 0.5% THD
250 - 20k Hz, +18 dBm 0.5% THD
Frequency Response 20 - 20k Hz, ±1 dB
Total Harmonic 0.01% at 1k Hz, rated output
Distortion
Inputs 8 input ports: every port accepts any input module
1 Bridging Input/Output
Input Sensitivity Input port #1 to #8: 100 mV / 10k Ω
& Impedance Bridging Input/Output: 100 mV / 3.3k Ω
Outputs Main: Balanced, 150/600 Ω
Aux: Unbalanced, 10k Ω, 0 dBm
Output Regulation Less than 1.5 dB, no load to full load
(1k Hz)
Dynamic Range Master volume set to min.: 90 dB
(Band Pass: 20 - 20k Hz, Master volume set to max.: 77 dB
with Tone Controls centered)
Tone Controls Bass: ±10 dB at 100 Hz; Treble: ±10 dB at 10k Hz
Indicators Normal, Peak, Power, Protect, and Signal LEDs
Protection Self-protection, with internal AC fuses
Power Consumption 18 W
Temperature Range 12°F to 140°F (-10°C to +60°C)
Color Black
Dimensions (W x H x D) 16.5” x 3.9” x 12.1” (420 x 99.1 x 307.5 mm)
Weight (without modules) 11.7 lbs (5.3 kg)
Other Features Output connects approx. 5 seconds after switching power on.
900 SERIES
MIXER/PRE-AMPLIFIER
Tel:[phone]
Fax:[phone]
www.toaelectronics.com
S PECIFICATIONS
Visit www.toaelectronics.com to download:
900 Series Architect and Engineering Specifications
900 Series Installation Manual
900 Series CAD Files
900 Series Module Guide

900 SERIES
MIXER/PRE-AMPLIFIER
Tel:[phone]
Fax:[phone]
www.toaelectronics.com
M ODULE
S
ELECTION
Model Type Description
M-01F MIC Microphone Input Module, Balanced, 200 Ω, Lo/Hi-Cut Filters, Female XLR
M-01M MIC Same as M-O1F with Male XLR
M-01P MIC Same as M-O1F with Phone Jack
M-01S MIC Same as M-O1F with Screw Terminals
M-03P MIC Microphone Input Module, HiZ, Unbalanced, 50k Ω, Lo/Hi-Cut Filters, Phone Jack
M-11S MIC Microphone Input Module, Balanced, 200 Ω, Lo/Hi-Cut Filters, Mute-Receive, Screw Terminals
M-21S MIC Microphone Input Module, Balanced, 200 Ω, Lo/Hi-Cut Filters, Remote Vol. Control, Screw Terminals
M-41S MIC Microphone Input Module, Balanced, 200 Ω, Lo/Hi-Cut Filters, Mute-Send, Removable Terminal Block
M-51F MIC Microphone Input Module, Balanced, 200 Ω, Lo-Cut Filter,Voice Gate,Female XLR
M-51S MIC Same as M-51F with Screw Terminals
M-61F MIC Microphone Input Module, Balanced, 200 Ω, Lo/Hi-Cut Filters, Compressor, Female XLR
M-61S MIC Same as M-61F with Screw Terminals
B-01F LINE Balanced Line Input Module, 10k ΩTransformer, Female XLR
B-01S LINE Balanced Line Input Module, 10k ΩTransformer, Screw Terminals
B-11S LINE Balanced Line Input Module, 10k ΩTransformer, Mute-Receive, Screw Terminals
B-21S LINE Balanced Line Input Module, 10k ΩTransformer, Remote Volume Control, Screw Terminals
B-41S LINE Balanced Line Input Module, 10k ΩTransformer, Mute-Send, Removable Terminal Block
L-01F LINE Line Matching Input Module, 600 ΩTransformer, Balanced, Female XLR
L-01S LINE Same as L-01F with Screw Terminals
L-11S LINE Line Matching Input Module, 600 ΩTransformer, Balanced, Mute-Receive, Screw Terminals
L-41S LINE Line Matching Input Module, 600 ΩTransformer, Balanced, Mute-Send, Scew Terminals
U-01F LINE Line Input Module, Unbalanced, 220k Ω, Female XLR
U-01P LINE Same as U-01F with Phone Jack
U-01R LINE Same as U-01F with RCA Jack
U-01S LINE Same as U-01F with Screw Terminals
U-03R LINE Stereo Line Input Module, Lo/Hi-Cut Filters, Stereo Summing Dual RCA Jacks
U-03S LINE Line Input Module, Lo/Hi-Cut Filters, Screw Terminals
U-11R LINE Line Input Module, Unbalanced, 220k Ω, Mute-Receive, RCA Jack
U-11S LINE Line Input Module, Unbalanced, 220k Ω, Mute-Receive, Screw Terminals
U-12S LINE Line Input Module, Unbalanced, 220k Ω,Variable Mute-Receive Depth, Screw Terminals
U-13R LINE Same as U-03R with Mute-Receive
U-13S LINE Same as U-03S with Mute-Receive
U-21S LINE Line Input Module, Unbalanced, 220k Ω, Remote Volume Control, Screw Terminals
U-43R LINE Same as U-03R with Mute-Send
U-43S LINE Same as U-03S with Mute-Send
U-61S LINE Line Input Module, Unbalanced, 220k Ω, Compressor, Screw Terminals
E-03R SPECIAL FUNCTION 900 Series Processor Module for F-121C/CM Speakers, Dual RCA Jacks
E-04R SPECIAL FUNCTION 900 Series Processor Module for H-1 Speakers, Dual RCA Jacks
E-05R SPECIAL FUNCTION 900 Series Processor Module for H-2/H-2WP Speakers, Dual RCA Jacks
E-06R SPECIAL FUNCTION 900 Series Processor Module for H-3/H-3WP Speakers, Dual RCA Jacks
E-07S SPECIAL FUNCTION 900 Series Low Pass Filter Output Module for FB-100 and HB-1, Removable Terminal Block
S-01S SPECIAL FUNCTION Signal Generator Module, 1 kHz Sine Wave, Screw Terminals
S-02S SPECIAL FUNCTION Signal Generator Module, Buzzer/Yelp, ScrewTerminals
S-04S SPECIAL FUNCTION Signal Generator Module, 8 Selectable Tones, Screw Terminals
T-01S SPECIAL FUNCTION Line Output Module, Balanced,600 Ω, Screw Terminals
T-02S SPECIAL FUNCTION Line Input Module for Music-on-Hold, Unbalanced,220k ΩInput, 600 ΩBalanced Output, Screw Terminals
T-12S SPECIAL FUNCTION Same as T-02S with Input Mute-Receive

TOA E LECTRONICS , I NC .
601 G ATEWAY
B LVD ., S UITE 300
S
OUTH S AN F RANCISCO , CA 94080
TEL: [phone]
FAX: [phone]
www.toaelectronics.com
900 S ERIES
M IXER /
P
RE -A MPLIFIER
LineInputModules* Microphone
InputModules
Female
XLR Male XLR 1/4”
Phone
Jack
RCA
Jack DualRCA
Jacks 3Screw Terminals 5Screw Terminals Removable Terminal
Block
Special
FunctionModules
Standardwithhigh/lowcutfilters M-01F M-01M M-01P M-01S
Mute-Receivewithhigh/lowcutfilters M-11S
Mute-Sendwithhigh/lowcutfilters M-41S
VoiceGatewithlowcutfilters M-51F M-51S
Compressorwithhigh/lowcutfilters M-61F M-61S
RemoteVolumeControlwithhigh/lowfilters M-21S
Forhigh-Zmic.onlyw/high/lowcutfilters M-03P
L-01F L-01S
Standard,nospecialfeatures B-01F U-O1P U-01R B-01S
U-01F U-01S
Standardwithhigh/lowcutfilters U-03R U-03S
L-11S
Mute-Receive U-11R B-11S
U-11S
Mute-Receivewithhigh/lowcutfilters U-13R U-13S
Mute-Receivewithvariablemutedepth U-12S
Mute-Send L-41S B-41S
Mute-Sendwithhigh/lowcutfilters U-43R U-43S
RemoteVolumeControl B-21S
U-21S
Compressor U-61S
Lineoutput T-01S
LineinputwithMusic-On-Hold(MOH)output T-02S
Lineinputw/MOH&inputMute-Receive T-12S
1kHzSineWavetesttone S-01S
Buzzer/Yelpsignaltone S-02S
Switch-selectabletone S-04S
EqualizerforF-121C/CMSpeakers E-03R
EqualizerforH-1Speakers E-04R
EqualizerforH-2/H-2WPSpeakers E-05R
*ForLine InputModules:Use"B" modulesw/ transformerisolationfor balanced/unbalancedsources. Use"L"modules
onlyfor600ohmimpedance matching.Use"U" forunbalancedsourcesw/short cables(≤15feet).
EqualizerforH-3/H-3WPSpeakers E-06R
LowPassFilterforFB-100/HB-1Speakers E-07S
Thetwotypesofmutingmodules,MUTE-RECEIVEandMUTE-SEND,havemutefunctioncircuitrythatconnectsto twocommon"MUTE"buses,andonecommon
"GROUND" buswheninstalledinanA-900MK2mixer/amplifierorM-900MK2mixer/pre-amplifier. A "BUS"issimplyaninternalwirethatconnectsfrommodule-slot
tomodule-slot. Youcanaccessthesebusesviarear-panelscrewterminals,labeled, "MUTE1","MUTE2"and"GND". Mute-typemodulesconnecttobothmutebuses
"out-of-the-box". Youcandisconnectthemodule'smutefunctioncircuitryfromeachmutebusbycuttingjumperwiresonthemodules. Thisallowsyoutoconfigure
systemswithmultiplelevelsofpriority.
MUTE-RECEIVEmodulesrespondtomutebusactivationineitheroftwoways:1)SwitchActivation: Connectingaswitchclosurebetweenthe"MUTE"(1or2)"and
"GND"screwterminalsontherearofthemixer/amplifieractivatesthemutefunctioncircuitryof MUTE-RECEIVEmodulesconnectedtothesamebus. Thisisalso
referredtoas"manualmuting". 2)Auto-Mute: WheninputsignalleveltoaMUTE-SENDmoduleexceedsauser-adjustablethreshold,themodule'smutefunctioncir-
cuitryactivatesthemutefunctioncircuitryofall MUTE-RECEIVEmodulesconnectedtothesamebus. Thisisalsoreferredtoas"signal-activatedmuting".
M
UTING M ODULES
900 S ERIES M ODULE C
HART
Literature Order #: L-M900SERIES
Specifications subject to change without notice.
© 2003, TOA Electronics, Inc.