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N= `lkqbkqp= 1 2 3 CONTENTS .......................................................................................................................................1 APPROVALS.....................................................................................................................................2 WARNINGS ......................................................................................................................................2 3.1 Explanation of graphical symbols ....................
O= =^mmols^ip= This equipment is tested and approved according to the U.S. safety standard ANSI/ UL 6500 and Canadian safety standard CSA E60065-00. ETL made the tests and they are a Nationally Recognized Testing Laboratory (NRTL). The ETL Listed Mark is recognized by local inspectors and Authorities Having Jurisdiction (AHJs) throughout North America and also in some areas of South America.
12. The unit is intended to use in a 19” rack. Follow the mounting instructions. When a rack on wheels is used, use caution when moving the loaded rack to avoid injury from tipping over. 13. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Do not connect an amplifier output in parallel or series with any other amplifier’s output.
Q= fkqolar`qflk= Thank you for purchasing a Lab.gruppen power amplifier. This manual contains important information on operating your amplifier correctly and safely. Please take some time and read this manual to familiarize you with the advanced features of this amplifier. QKN= råé~ÅâáåÖ= Carefully open the shipping carton and check for any noticeable damage. Every Lab.gruppen amplifier is tested and inspected before leaving the factory and should arrive in perfect condition.
. Fan grill filters Two grilles with foam filters are located on the front panel to prevent dust from entering the amplifier. For easy cleaning of the filters the grilles are removable by simply pulling them off. The foam filters should always be used. 7. Power switch Turns mains power on or off. (See page 8 and 12) QKP= oÉ~ê=m~åÉä= Figure 2: Rear panel 1. Output / Speaker connector The Speakon connector from Neutrik® may be unfamiliar to some users.
R= ob^o=m^kbi=cb^qrobp= Before turning the amplifier on please read the following sections to make sure that the unit is set up properly for your specific application. RKN= d~áå=ëïáíÅÜ= The gain switch located on the rear panel (the central DIP switch) changes the input sensitivity of the amplifier. This can be handy when using low or high nominal input signals. E.g.
RKP= léÉê~íáçå=ãçÇÉë= RKPKN= píÉêÉç=ãçÇÉ= In this mode both channels operate independently of each other. This is used for all 2-channel modes, such as stereo and bi-amping. Set the two centre switches to off position for the stereo mode. The level attenuators on the front panel will control the respective channels levels. Never connect either output terminal to ground or in parallel. The recommended minimum nominal impedance for stereo or tandem operation is 2 ohms per channel.
RKPKR= _êáÇÖÉ=ãçåç=ãçÇÉ=ÑÉ~íìêÉë= Bridged mono mode combines the power of both channels into one speaker. This results in twice the voltage swing, four times the peak power and just less than three times the full power of a single channel. One way to understand the load and power from the amplifier’s perspective in bridged mode is that it is zero voltage at the centre of the voice-coil winding.
If the power plug is not appropriate for your country, it can be cut off and wired to a suitable connector in the following way: BLACK or BROWN LIVE WHITE or BLUE NEUTRAL GREEN or GREEN/YELLOW EARTH Once the AC connector is connected to a suitable AC supply, the amplifier can be started with the power switch.
MAX OUTPUT POWER fP 2200 note 1 note 2 8 ohms 4 ohms 2 ohms 2x 2x 2x Power [W] 350 650 1100 MAINS INPUT POWER 1/3 Power note 1 630 1120 1975 1/8 Power note 2 400 700 1185 Idle 110 110 110 Average power with music as program source. The amplifier driven to clip level. Normal music power with 9dB headroom, IEC standard power rating.
Figure 5: XLR balanced Figure 4: XLR input connector Within the Neutrik® Combojack there is a ¼”(6.3mm) phone jack wired in parallel with the XLR. TIP RING SLEEVE HOT COLD GROUND/SHIELD Figure 6: ¼” TRS plug The input impedance is high enough (20 kohms balanced) to allow ”daisy-chaining”, or multiple parallel input connections. The headroom of the input circuits is also great enough to accept the maximum output level from virtually any low-level signal source.
Channel A and B into two separate Speakons Channel A and B into one Speakon (Stereo and Bi-amp) Bridge mono Never connect either output terminal to ground or to some other output or input terminal. For regular two-channel operation connect each speaker load across the output’s positive and negative terminals. Pay attention to speaker polarity; loudspeakers connected out of polarity degrade sound quality, and may be damaged as a consequence.
UKQ= fåÇáÅ~íçêë= The yellow LED’s indicate if any protection circuits are activated. The protections are described further below on this page (13). The Clip indicator tells if the amplifier output is clipping or limiting. It has two different indication statuses: • If the clip limiter is enabled, it has a short time constant, and it illuminates briefly. • If the clip limiter is disabled, it has an increased time constant, and it illuminates for a longer period.
VKNKO= qÜÉêã~ä=éêçíÉÅíáçå= If the amplifier is driven very hard into a low impedance load, the cooling fans will run at high speed. If the causing conditions continue, the “Temp” temperature indicator(s) will illuminate indicating that the amplifier is about to go into thermal shutdown. After approximately five seconds the amplifier will go into thermal protection by muting the input signal.
NM=j^fkqbk^k`b= Under normal use the amplifier should provide years of trouble-free service. The only user maintenance required by the user is to vacuum the front grille periodically. In some extreme cases it may be necessary for authorized service personnel to clean the inside of the amplifier. These conditions usually occur after prolonged use, e.g. in environments using "cracked oil" smoke machines. If you are using your amplifier for heavy duty use, i.e.
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NO=t^oo^kqv= General This product is manufactured by Lab.gruppen and is warranted to be free from defects in components and factory workmanship under normal use and service for a period of three (3) years from the date of original purchase from an authorised Lab.gruppen dealer.
