1 . Mains Switch 1
This switch turns on and off the unit by controlling both phases.
2 . Power LED 2
This Power LED lights up when the unit is powered up.
3. Protection LED 3
This red LED lights up when the thermal-protection system is working, no signal is output during this protection period. When any overheating occurs inside the unit (the critical temperature is 800C), you should speed up the air circulation or decrease the signal level for avoiding overheating. If the problem is corrected the protection systems deactivate automatically, this LED goes out, and the normal amplifier operation is resumed.
4. Clip Signal LED 4
The clip LEDs light up when distortion reaches or exceeds 0.5% approximately, which means the unit is being driven by excessively high signal source, and you'd better adjust the level control until these LEDs go out.
4
4 5
OFF
POWER
1
POWER
PROT
CLIP
SIG
CH1
CH2
ON
1. INTRODUCTION
Thank you very much for expressing your confidence in LTO products by purchasing our MAC 2.2/2.3/2.4 Stereo Power Amplifier. With the MAC 2.2/2.3/2.4 you have acquired an extremely musical and flexible high power amplifier which is based on many years of experience and finding in amplifier technology and is used through the world in the renowned studios. The MAC 2.2/2.3/2.4 is used for professional output of stage stereo with excellent performance. Output power can be adjusted at the user's demand, and the sound quality and protecting circuit are both sophisticated.
The front panel presents you with 6 LEDs (power LED, protection LED, clip & signal LED for each channel) and 2 level controls, you can operate this unit more precise and easier. The output connectors are speak-on jacks and binding post terminals, which are used for better matching. Before connecting this unit into your sound system, please make sure it is powered down to prevent any electric shock.
2. FEATURE LIST
Sophisticated protecting circuit protects the machine from improper tampering
Excellent frequency echo and sound quality
High fidelity and low noise
Balanced XLR and 1/4" TRS input connectors
Output connectors are speak-on jacks and binding post terminals
Stereo mode, parallel mode and bridged mode are available
Indicator for the output balance, as well as status indicators of SIG and CLIP. When there is any signal is more than 100mV, the SIG LED lights up. When there is overload, the CLIP LED lights up. If anything abnormal happens to the circuits, the CLIP LED will be continuously on, with no action from the circuits. This helps the user todetermine which status it is in.
Solid and durable, can be mounted into a cabinet
Manufactured under QS9000, VDA6.1 certified management system
3. CONTROL ELEMENTS
3.1 Front Panel
2 3