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CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

IMPORTANT SAFETY INSTRUCTION

TO REDUCE THE RISK OF ELECTRIC SHOCK
PLEASE DO NOT REMOVE THE COVER OR
THE BACK PANEL OF THIS EQUIPMENT.
THERE ARE NO PARTS NEEDED BY USER
INSIDE THE EQUIPMENT. FOR SERVICE,
PLEASE CONTACT QUALIFIED SERVICE
CENTERS.

WARNING

To reduce the risk of electric shock
and fire, do not expose this equipment
to moisture or rain.

1.
2.
3.

4.

5.

6.

7.

8.

9.

10.

Dispose of this product should
not be placed in municipal waste
and should be separate collection.

11.

12.

Move this Equipment only with a cart,
stand, tripod, or bracket,
specified by the
manufacturer, or
sold with the
Equipment. When
a cart is used, use
caution when
moving the cart /
equipment
combination to
avoid possible
injury from tip-over.
Permanent hearing loss may be caused by
exposure to \ extremely high noise levels.
The US. Government's Occupational Safety
and Health Administration (OSHA) has
specified the permissible exposure to noise
level.
These are shown in the following chart:

According to OSHA, an exposure to high SPL in
excess of these limits may result in the loss of
heat. To avoid the potential damage of heat, it is
recommended that Personnel exposed to
equipment capable of generating high SPL use
hearing protection while such equipment is
under operation.

This symbol, wherever used, alerts you to the
presence of un-insulated and dangerous voltages

within the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.

This symbol, wherever used, alerts you to

important operating and maintenance instructions.

Please read.

Protective Ground Terminal
AC mains (Alternating Current)
Hazardous Live Terminal

ON:

Denotes the product is turned on.

OFF: Denotes the product is turned off.

The apparatus shall be connected to a mains
socket outlet with a protective earthing
connection.

The mains plug or an appliance coupler is used
as the disconnect device, the disconnect device
shall remain readily operable.

CAUTION

Describes precautions that should be observed to
prevent damage to the product.

Read this Manual carefully before operation.
Keep this Manual in a safe place.
Be aware of all warnings reported
with this symbol.
Keep this Equipment away from water and
moisture.
Clean it only with dry cloth. Do not use
solvent or other chemicals.
Do not damp or cover any cooling opening.
Install the equipment only in accordance with
the Manufacturer's instructions.

Power Cords are designed for your safety. Do
not remove Ground connections! If the plug
does not fit your AC outlet, seek advice from
a qualified electrician. Protect the power
cord and plug from any physical stress to
avoid risk of electric shock. Do not place
heavy objects on the power cord. This could
cause electric shock or fire.

Unplug this equipment when unused for long
periods of time or during a storm.

Refer all service to qualified service personnel
only. Do not perform any servicing other than
those instructions contained within the
User's Manual.

To prevent fire and damage to the product,
use only the recommended fuse type as
indicated in this manual. Do not short-circuit
the fuse holder. Before replacing the fuse,
make sure that the product is OFF and
disconnected from the AC outlet.

HOURS X DAY

EXAMPLE

8
6
4
3
2
1,5
1
0,5
0,25 or less

SPL

90
92
95
97

100
102
105
110
115

Small gig
train
Subway train
High level desktop monitors
Classic music concert

Rock concert

Содержание MAC 2.2

Страница 1: ...MAC 2 2 2 3 2 4 PROFESSIONAL STEREO AMPLIFIERS OWNER S MANUAL www altoproaudio com Version 1 1 NOV 2007 LTO R English ...

Страница 2: ...ective Ground Terminal AC mains Alternating Current Hazardous Live Terminal ON Denotes the product is turned on OFF Denotes the product is turned off The apparatus shall be connected to a mains socket outlet with a protective earthing connection The mains plug or an appliance coupler is used as the disconnect device the disconnect device shall remain readily operable CAUTION Describes precautions ...

Страница 3: ... value performance They are all designed for heavy duty application and they all can drive 2 ohm loads for long periods without overheating Therefore they are suited to drive subwoofers with a minimum load of 4 ohms when working in Bridge Mode L TO 2 FEATURES Clip limiter circuit that is user adjustable Switchable low frequency filter at 30Hz Operating Mode is Stereo Parallel or Bridge Balanced XL...

Страница 4: ...tereo Power Amplifier LTO R CLIP SIG PROT POWER CH1 CH2 MAC 2 2 MAC 2 4 MAC 2 3 POWER ON OFF MAC 2 3 Stereo Power Amplifier LTO R CLIP SIG PROT POWER CH1 CH2 POWER ON OFF MAC 2 4 Stereo Power Amplifier LTO R CLIP SIG PROT POWER CH1 CH2 ...

Страница 5: ...mono signal is input to channel 1 or Channel 2 of the MAC 2 series amplifier and then output to 2 separate speakers Each speaker volume can be set separately 3 POWER ON OFF MAC 2 4 Stereo Power Amplifier LTO R CLIP SIG PROT POWER CH1 CH2 POWER ON OFF MAC 2 4 Stereo Power Amplifier LTO R CLIP SIG PROT POWER CH1 CH2 ...

Страница 6: ...hannels The Main Mix signal is routed into an electronic crossover channel 1 drives the woofer and channel 2 drives the high frequency driver in a 2 way enclosure STEREO BIAMP HOOK UP 4 POWER ON OFF MAC 2 4 Stereo Power Amplifier LTO R CLIP SIG PROT POWER CH1 CH2 POWER ON OFF MAC 2 4 Stereo Power Amplifier LTO R CLIP SIG PROT POWER CH1 CH2 POWER ON OFF MAC 2 4 Stereo Power Amplifier LTO R CLIP SIG...

Страница 7: ...stortion reaches a level of 0 5 Turn the relative GAIN control down so that the CLIP LEDs only flash occasionally For MAC 2 series b The LED will light up due to short circuit low impedance load Only for MAC 2 4 These LEDs will light up when the signal at the output is at least 100 mV 5 SIGNAL LED 6 GAIN CONTROLS These controls are used to adjust the output signal level 7 COOLING VENTS The MAC 2 s...

Страница 8: ...s 9 IEC socket for AC power cable Connect the supplied main cord Do not insert the power cord into the MAC 2 series amplifier and into the AC Outlet until voltage has been correctly set 10 XLR BALANCED INPUT CONNECTORS Each Channel features balanced XLR and 1 4 jack sockets wired in parallel The Balanced signals are less sensitive to hum noise generated by AC 11 SPEAKON OUTPUTS Channel 1 Channel 2...

Страница 9: ...ill be output from the bridge mono output connector Detail wiring diagram you can refer to chapter 4 16 COOLING FAN This fan secures enough cooling for your MAC 2 series amplifier The airflow is front to rear The fan speed is electronically regulated depending on the temperature of the power devices Parallel Mono Mode In this mode channel 1 input signal will be output from the output connectors of...

Страница 10: ...lifier The channel 1 input signal will be output from the channel 1 output connectors and the channel 2 input signal will be output from the channel 2 output connectors The MAC 2 series amplifiers provide three operating modes stereo mode parallel mono mode and bridged mode you can decide each specific operating mode according to your actual application circumstance Operate MAC 2 series in Stereo ...

Страница 11: ...utput from the output connectors of both channels The channel 2 input jack is not used the channel 1 and channel 2 volumes can be adjusted independently Use the Parallel Mode when you want to drive two speakers with only one input signal keeping separate control of the volume of the two channels NOTE since you are not using the channel 2 input you can use this socket to daisy chain the signal to a...

Страница 12: ... binding post In this case use the channel 1 volume control to adjust the volume keep the volume control of channel 2 turned completely down counter clockwise Bridged mode is intended for driving loads with a total impedance of 4 ohms or greater In Bridge Mode you will combine the power of both channels into one speaker You will have available massive amount of power so check carefully the power h...

Страница 13: ...11 5 BLOCK DIAGRAM ...

Страница 14: ...hms RMS 4 Ohms EIAJ 2 Ohms EIAJ 8 Ohms RMS 8 Ohms RMS POWER SPECIFICATIONS MAC 2 2 750 W 2 x 350 W x 2 230 W x 2 710 W 1500 W 1000 W 510 W 285 W 1000 W 2200 W MAC 2 3 MAC 2 4 1800 W 900 W 560 W 1800 W 3100 W Stereo Mode Both channels driven 20Hz 20KHz Bridge Mono Mode 20Hz 20kHz CONTROLS INDICATORS CONNECTORS POWER SUPPL Y DIMENSIONS WEIGHT Front AC switch Input level control for each channel Rear...

Страница 15: ...eriod of 1 year from the purchase date if you have completed the Warranty Registration Card in time 3 2 The warranty service is only available to the original consumer who purchased this product directly from the retail dealer and it can not be transferred 3 3 During the warranty service may repair or replace this product at its LTO own option at no charge to you for parts or for labor in accordan...

Страница 16: ...nslation or reproduction of part of this manual without written permission is forbidden Copyright 2007 Seikaku Group SEIKAKU TECHNICAL GROUP LIMITED NO 1 Lane 17 Sec 2 Han Shi West Road Taichung 40151 Taiwan http www altoproaudio com Tel 886 4 22313737 email alto altoproaudio com Fax 886 4 22346757 NF03010 1 0 ...

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