Ñm=OQMMn= rpbo=j^kr^i= =
N= `lkqbkqp= 1 2 3 4 5 6 7 8 9 CONTENTS .......................................................................................................................................1 APPROVALS.....................................................................................................................................2 WARNINGS ......................................................................................................................................2 3.1 Explanation of graphical symbols ..
10 MAINTENANCE.........................................................................................................................17 10.1 Troubleshooting........................................................................................................................17 11 SPECIFICATIONS ......................................................................................................................18 12 WARRANTY.................................................................................
9. Connect only to AC power outlets rated 200-240V, 50-60Hz. 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.
• • Check if the affected unit complies with the EMC limits for immunity, (CE-labelled). If not, address the problem with the manufacturer or supplier. All electrical products sold in the EC must be approved for immunity against electromagnetic fields, high voltage flashes, and radio interference. Consult the dealer or an experienced radio/TV technician for help. Q= fkqolar`qflk= Thank you for purchasing a Lab.gruppen power amplifier.
5. Clip/limit indicator This indicator signals if the amplifier output is clipping or limiting. It has two different indication states: If the clip limiter is engaged, it has a short time constant, and it illuminates briefly. If the clip limiter is not engaged, it has an increased time constant, and it illuminates for a longer period. (See page 15) 6. Fan grill filters Two grilles with foam filters are located on the front panel to prevent dust from entering the amplifier.
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 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.
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.
headroom for low impedance loads. The amp runs at higher efficiency, and the risk for going into thermal protection is significantly lower. 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.
SKP= léÉê~íáåÖ=îçäí~ÖÉ= WARNING! A label just below the mains cable on the rear of the amplifier indicates the AC mains voltage for which the amplifier is wired. Connect the power cable only to the AC source referred to on the label. The warranty will not cover damage caused by connecting to the wrong type of AC mains. Lab.gruppen switch mode amplifiers use primary switching.
Last, the "regular operating power" as defined by the safety standard IEC 65/ANSI/UL 6500 and used by a majority of safety agencies. The regular operating power is measured by using pink noise, and with an average output power equal to 1/8 of full power. The one eighth of the total power is as loud as you can play music while making some attempt to avoid obvious clipping. It also corresponds to a headroom of 9dB, which is very low for regular audio program.
Figure 4. XLR input connector Figure 5. XLR balanced 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.
NN=pmb`fcf`^qflkp= i~ÄKÖêìééÉå== = = = rëÉê=j~åì~ä===Ñm=OQMM=n=====sÉêëáçå=MKU========OMMPJNMJMT= = ====================== ========================NU
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.