Lab.gruppen fP Series FP 3400 Скачать руководство пользователя страница 4

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. 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.  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. Do 

not connect the amplifier output to any other voltage source, such as battery, mains source, or 
power supply, regardless of whether the amplifier is turned on or off. 

15.  Do not run the output of any amplifier back into another channel's input. 
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. 

There are no serviceable parts inside and removal may void the warranty. 

18.  An experienced user shall always supervise this professional audio equipment, especially if 

inexperienced adults or minors are using the equipment. 

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Your amplifier is very powerful and can be potentially dangerous to both, loudspeakers and 
humans alike. Many loudspeakers can be easily damaged or destroyed by overpowering, 
especially with the high power available from a bridged amplifier. Always check the speakers’ 

continuous and peak power capabilities.  
Even if the amplifier’s front panel attenuators can be used to reduce the gain, it is still possible to reach 
full output power if the input signal level is high enough. 

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Power amplifiers are capable of producing hazardous output voltages. To avoid electrical s
do not touch any exposed speaker wiring while the amplifier is operating. See page 

14

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 about 

outputs for proper connection of speakers.  

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A sample of this product has been tested and complies with the limits for the European Electro 
Magnetic Compatibility (EMC) directive. This equipment has also been tested and found to comply 
with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are 
designed to provide reasonable protection against harmful interference from electrical equipment. This 
product uses radio frequency energy and if not used or installed in accordance with these operating 
instructions, may cause interference to other equipment, such as radio receivers. However, there is no 
guarantee that interference will not occur in a particular installation. 
If this equipment does cause harmful interference to radio or television reception, which can be 
determined by turning the equipment on and off, the user is encouraged to try to correct the interference 
by one or more of the following measures: 

• 

Reorient or relocate the antenna. 

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Содержание fP Series FP 3400

Страница 1: ...m PQMM rpbo j kr i...

Страница 2: ...5 3 5 Bridge mono mode features 8 5 4 Impedance matching MLS switch 8 5 4 1 A practical way to find your MLSTM settings 9 5 4 2 MLS technology the background 10 5 4 3 The problem 10 5 4 4 The solution...

Страница 3: ...ctric shock to humans The exclamation point within a triangle is intended to alert the user to presence of important operating and service instructions in the literature accompanying the product PKO t...

Страница 4: ...ardous voltages There are no serviceable parts inside and removal may void the warranty 18 An experienced user shall always supervise this professional audio equipment especially if inexperienced adul...

Страница 5: ...rred during shipping Be sure to save the carton and packing materials for the carrier s inspection It is also advisable to save the carton and packing material even if the amplifier is undamaged Shoul...

Страница 6: ...foam filters should always be used 7 Power switch Turns mains power on or off See page 11 and 14 QKP o m Figure 2 Rear panel 1 Output Speaker connector The Speakon connector from Neutrik may be unfami...

Страница 7: ...very often a so called loudspeaker processor or controller involved it being unique for the loudspeaker system In most cases the manufacturers of these processors and or loudspeakers recommend a spec...

Страница 8: ...polarity reversed on the input but polarity compensated by feeding the minus pin on the Channel B output with the output voltage Channel A output is connected in normal polarity mode By having channel...

Страница 9: ...shares the other 4 ohms part The power into 4 ohms from an fP 3400 MLS at 0dB is 1500W So the total bridged power into the 8 ohms load will be 2 x 1500 3000W ne RKQ f Ejip F The MLSTM switches are lo...

Страница 10: ...output power by changing MLS to a matching lower value 2dB or 4dB or 5dB 4 Try the setup with a musical signal If the amp runs into thermal protection or into current limiting audible as distortion or...

Страница 11: ...justed for a much higher current so it cannot interfere with the requirements by the loudspeaker impedance curve S fkpq ii qflk SKN j The amplifier is two rack units high 2U and will fit into a standa...

Страница 12: ...g via a resistor to chassis and the grounding system is automatic If a potential above 0 6V is presents in between signal ground and chassis ground a short circuit is introduced between the two thereb...

Страница 13: ...MAINS INPUT POWER MAX OUTPUT POWER Table 3 SKSKN The heat power can be calculated as in the following example We consider a headroom of at least 5dB 1 3 of full power and a 4 ohms load on an amplifier...

Страница 14: ...ss in long cables To daisy chain amplifiers use the XLR male connector provided on each channel labeled Link They are connected in parallel with the Neutrik Combojack on each input TKNKO r To connect...

Страница 15: ...r of the amplifiers in two ways by increasing the load impedance and by introducing resistive power losses WARNING To prevent from electrical shock do not operate the amplifier with any portion of the...

Страница 16: ...tures are inaudible All protection circuits work independent from each other VKNKN The clip limiter is included to prevent from dangerous clipped signals reaching the speaker and damaging it If an amp...

Страница 17: ...Q p All Lab gruppen amplifiers are completely short circuit protected The protection circuitry permits very high peak currents but still holds the output devices within the safe operation levels If a...

Страница 18: ...ve possible high frequency oscillations from the relevant input Fault The amplifier goes into thermal protection when running at low levels Check that nothing causes a short circuit at the amplifier s...

Страница 19: ...NN pmb fcf qflkp i K NU r j m PQMM s NKN OMMPJNMJMO...

Страница 20: ...ibility for any loss due to cancellation of any events or rent of replacement equipment or costs due to third party s or customer s loss of profit or any other indirect cost or losses however incurred...

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