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N= `lkqbkqp= 1 2 3 CONTENTS .......................................................................................................................................1 APPROVALS.....................................................................................................................................2 WARNINGS ......................................................................................................................................2 3.1 Explanation of graphical symbols ....................
10.1 11 12 Troubleshooting........................................................................................................................17 SPECIFICATIONS ......................................................................................................................18 WARRANTY...............................................................................................................................19 O= =^mmols^ip= This equipment is tested and approved according to the U.S.
10. Do not use this amplifier if the power cord is broken or frayed. Protect the power cord from being walked upon or pinched particularly at the plugs and the point where it exits from the apparatus. 11. Only use accessories specified by the manufacturer. 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.
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 10 and 14) 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= RKNKN= d~áå= The gain of the fP 2400 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. But in the case of an MLS-switch equipped amplifier there are many choices for full output level in different load impedances.
RKO= iáåâ=ëïáíÅÜ= The Link switches located on rear panel (switches between the four XLR input connectors) are for changing the operation mode of the amplifier. (See below, section 5.3). RKP= léÉê~íáçå=ãçÇÉë= RKPKN= píÉêÉç=ãçÇÉ= In this mode, both channels operate independently of each other. This is used for all 2 or 4-channel modes, such as stereo and bi-amping. Set the switches in depressed -OUT position for the stereo mode.
RKPKQ= _êáÇÖÉ=ãçåç=ãçÇÉ= Bridge mono mode is used to deliver two channels' power to a single load. The nominal impedance of the load must be more than 3 ohms. Set the Link switch to the pressed –“IN”-position and use one of the input connectors. You can use the remaining input connectors to carry signal to other amps. Both level attenuators must be at the same position. We recommend that you put them in the 0dB (full) position. Connect the speaker as shown.
RKQ= fãéÉÇ~åÅÉ=ã~íÅÜáåÖ=Ejip=ëïáíÅÜF= The MLSTM switch is located on the rear panel. The MLS (Minimum Load Select) switch offer impedance matching, so you can drive the fP 2400Q into 2 ohms without increased heat loss. As stated earlier, the fP 2600 can produce 380 watts into both, 2 and 4 ohms. Use lower MLSTM setting (-3dB) when connecting to lower impedance loads as shown in table 1. As can be seen in table 1, the fP 2400Q can produce output power in excess of 380 watts.
RKQKO= jip=íÉÅÜåçäçÖó=Ó=íÜÉ=Ä~ÅâÖêçìåÇ= RKQKP= qÜÉ=éêçÄäÉã= Assume that a power amplifier can deliver 1000 watts into 8 ohms, and it should be able to run also into 2 ohms. Theoretically, and according to the physical laws, it should be able to deliver 4000 watts into 2 ohms. Very few professional power amplifiers are able to do this, as all conventional power amplifier designs are compromises between power dissipation, cost, size etc.
Lab.gruppen switch mode amplifiers use primary switching. The mains power is being rectified directly in front of the transformer, meaning that the power supply is insensitive to the mains frequency and will operate from DC to 400 Hz.
MAX OUTPUT POWER fP 2400Q note 1 note 2 8 ohms 4 ohms* 2 ohms* 4x 4x 4x Power [W] 360 380 500 MAINS INPUT POWER 1/3 Power note 1 1140 1325 2125 1/8 Power note 2 820 840 1440 Idle 175 175 175 * MLS at -3dB 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, which is wired in parallel with the XLR. TIP RING SLEEVE HOT COLD SHIELD/GROUND 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 high enough to accept the maximum output level from virtually any low-level signal source.
Channel A and B (or C and D) into one Speakon. . (Quad or Bi-amp) Bridged mono Never connect either output terminal to ground or to some other output or input terminal. For normal four-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 on the top, indicate if any protection circuits are activated. The protections are described further below on this page (15). 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.
VKNKP= sec=éêçíÉÅíáçå= If a signal above 12kHz is detected at the amplifier outputs for more than five seconds at full output power, the VHF protection mutes the input signal. This is indicated by the LED’s on the front panel labeled Protect. After five seconds the outputs will un-mute and return to normal operation, unless the output signal has remained unchanged, in which case the VHF protection will re-initiate. VKNKQ= pÜçêí=ÅáêÅìáí=éêçíÉÅíáçå= All Lab.
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 grill 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.
