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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 conforms to the requirements of the EMC directive 89/336/EEC, amended by 92/31/EEC and 93/68/EEC and the requirements of the Low Voltage Directive 73/23/EEC, amended by 93/68/EEC. Standard Applied EMC Emission EMC Immunity Electrical Safety EN55103-1, E3 EN55103-2, E3, with S/N below 1% at normal operation level.
16. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way such as: • Power-supply cord or plug is damaged • Liquid has been spilled into the unit • An object has fallen into the unit • The unit has been exposed to rain or moisture • The unit does not operate normally • The unit was dropped or the enclosure is damaged 17. Do not remove top or bottom covers. Removal of the cover will expose hazardous voltages.
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.
7. Fan grill filters A grille with foam filters is located on the front panel to prevent dust from entering the amplifier. The grille is removable for easy cleaning of the filter by simply pulling them off. The foam filter should always be used. 8. Carry/protection handle Both handles can be used to carry the amplifier; they also act as protection for the front panel.
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. RKNKN= d~áå= The gain of the iP 1150Q is fixed to 32 dB RKNKO= pÉåëáíáîáíó= Sensitivity is defined as how many volts (rms) or dBu (referred to 0.775Vrms) are required to get full output power. As the output power varies with the load impedance, usually 4 ohms is the reference.
RKPKO= kçíÉ=Ñçê=ÄÉåÅÜ=íÉëí= NOTE: Channel B and D is always polarity reversed on the input, but polarity compensated by feeding the minus pin on the Channel B and D outputs with the output voltage. Channel A and C outputs are connected in normal polarity mode. By having channel A and B (and C and D) operating in opposite polarity, the energy storage in the power supply is more efficient. This is significant for signals below 100 Hz (sub bass etc.) and improves the power bandwidth.
S= fkpq^ii^qflk= SKN= jçìåíáåÖ= The amplifier is two rack units high (2U) and will mount in a standard EIA 19” rack. Amplifiers may be stacked directly on top of each other. There is no need for spacing between units. If it is the intention to fill a rack with amplifiers, we recommend racking is started from the bottom of the rack. It is also recommended that rear supports are used for amplifiers mounted in the middle of the rack, especially if used as part of a portable system.
For all units that are CE approved (radio interference), there is an AC mains filter. This filter needs the chassis ground for reference, otherwise a current loop is formed via the signal ground. Use the balanced input to avoid hum and interference. SKR= mçïÉê=Åçåëìãéíáçå= There are three ways to determine the power/current consumption of the amplifier: First, the peak current draw at full output power.
HEAT POWER iP 1150Q note 1 note 2 8 ohms 4 ohms 2 ohms 1/3 Power(1) 1/8 Power (2) 1/3 Power(1) 1/8 Power (2) 1/3 Power(1) 1/8 Power (2) [W] [W] kcal / h kcal / h BTU / h BTU / h 307 235 260 200 1050 800 453 370 390 320 1550 1260 705 605 610 520 2410 2060 Average power with music as program source. The amplifier driven to clip level. Normal music power with 9dB headroom, IEC standard power rating.
TKNKO= råÄ~ä~åÅÉÇ=áåéìíë= To connect an unbalanced input source, connect pins 1 and 3 in the cable’s XLR plug (ring and sleeve in a TRS plug). If you leave a pin disconnected, you will lose 6dB. A better method for using unbalanced sources is shown in figure 8. This is similar to the connection for balanced lines, but pin 3 is connected to the shield at the source end of the cable. The hum and noise rejection for the cable is equivalent to that of a balanced line.
U= lmbo^qflk= UKN= léÉê~íáçå=éêÉÅ~ìíáçåë= • Make sure that the power switch is set to “off” before connecting any input or output or operating the switches on rear panel. See pages 8 about installation. • Make sure that the AC mains voltage is correct and the same as the one printed on the rear panel of the amplifier. See pages 8, about operating voltage and power consumption. • Make sure that the switches on the rear panel for operation modes and clip-limiter switch are in the correct position.
V= molqb`qflk=cb^qrobp= Each Lab.gruppen amplifier has many advanced protection features. Should a fault condition arise they are protecting both, the amplifier and the speakers connected to it. Under normal use these features are inaudible. All protection circuits work independent from each other. VKNKN= `äáé=äáãáíÉê= The clip limiter is included to prevent from dangerous clipped signals reaching the speaker and damaging it.
VKNKS= a`=éêçíÉÅíáçå= There are two types of DC protection: • Fuses on the supply branches of each channel. • A DC crowbar protection that shorts the output if more than 10 volts DC are being detected on the outputs. Either of these protections comes into effect once DC voltage is being detected, independently for both channels. NM=j^fkqbk^k`b= Under normal use the amplifier should provide years of trouble-free service.
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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.
