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N= `lkqbkqp= 1 2 3 4 5 6 7 8 9 CONTENTS .......................................................................................................................................1 APPROVALS.....................................................................................................................................2 WARNINGS ......................................................................................................................................2 3.1 Explanation of graphical symbols ..
9.1.5 AC mains voltage protection ............................................................................................16 9.1.6 DC protection ...................................................................................................................16 10 MAINTENANCE.........................................................................................................................17 10.1 Troubleshooting.......................................................................................
8. Always operate the unit with the chassis ground wire connected to the electrical safety earth. Do not defeat the safety purpose of a grounding-type plug. A grounding type plug has two pins and a third grounding prong. The third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 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.
• • • • Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 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.
This indicator illuminates if signals above 12 kHz are continuously present at full power at the output terminals. If this occurs the input signal is muted, and the process cycles until the VHF signal is no longer present. (See page 16) 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.
Three of the switches in the DIP switch selects the maximum gain of the channel to be either 20, 23, 26, 29, 32, 35, 38 or 41dB. (See page 6) 9. AC power cable 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.
RKNKP= léíáçåë= As the DIP switch is recessed, one may put a sticker across the bay to prevent from unauthorized changes. Another option is to completely remove the DIP switch. This should be done by authorized service personnel only! It corresponds to all switches set to “off”, i.e. 32dB gain and stereo mode. RKO= iáåâ=ëïáíÅÜ= The Link switch located on the rear panel (in the centre of the DIP switch) is for changing the operation mode of the amplifier (see next section 5.3).
RKPKQ= _êáÇÖÉ=ãçåç=ãçÇÉ= The Bridge mono mode is used to deliver both channels' power to a single load. The nominal impedance of the load must be more than 3 ohms. Set the Link switches to the “On” position and use one of the input connectors. You may use the remaining input connectors to carry the signal to other amps. Both level attenuators must be at the same position. We recommend that you set them to the 0dB (full) position. Connect the speaker as shown. Always use Channel A’s output connector.
MLSTM settings can be different for each channel, and a variety of combinations can be achieved – see table 2. Table 2 provides the simplest way to find the best MLSTM settings for your application. There is no risk to damage the amplifier since it is very well protected (even down to 0.3 ohms). The fP 3400 amplifier is a power converter, and by selecting MLSTM positions you are allocating a portion of the 3400 watts power.
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.
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.
Second, the maximum expected average current under worst case program material, which is 1/3 of full power according to the FTC standard. At this level the music will be in the state of constant clip and is therefore the highest power level one can obtain without completely obliterating the program. Last, the "regular operating power" as defined by the safety standard IEC 65/ANSI/UL 6500 and used by a majority of safety agencies.
T= `lkkb`qflkp= TKN= fåéìí=ÅçååÉÅíáçåë= TKNKN= _~ä~åÅÉÇ=áåéìíë= The XLR input connectors are electronically balanced, and wired according to the IEC 268 (pin 2 = “hot”), and wired in the following way: PIN 1 PIN 2 PIN 3 GROUND/SHIELD HOT (+) COLD (-) 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.
TKO= `çååÉÅíáåÖ=ëéÉ~âÉêë= Speaker connections are made via the two Neutrik® NL4FC Speakon connectors. The Speakon connector is designed for high power speaker connections. It assures the correct polarity, it locks in place and prevents from shock hazard. They are wired in the following manner: The right jack, Channel A, provides both channel A and B outputs, so it is useful for bridge and bi-amp operation (see bridge mono operation on page 7). The left Speakon, Channel B, carries only the channel B output.
UKP= fåéìí=~ííÉåì~íçêë= The two input level attenuators on the front panel adjust the signal level for their respective amplifier channel in all modes. They are calibrated in dB to assist the setup of active loudspeaker systems, or to cut down unwanted noise from the input signal. In bridge mode both controls must be in the same position, so that the speaker load will be shared equally between the channels. UKQ= fåÇáÅ~íçêë= The yellow LED’s indicate if any protection circuits are activated.
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.