lb Lautsprecher PA series, PA 2400, PA 2200, PA 2100, PA 4400 Operation Manual

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Operation Manual

19“ Power Amplifiers with 2 to 8 Channels

Our PA series of multi-channel power ampli ers comprises sophisticated class D ampli ers

designed for use in AV systems, multi-room systems and multi-channel public address systems.

They deliver outstanding sound quality with low levels of heat build-up and provide an Auto ON/OFF

circuit for each channel pair to minimize power consumption in the SLEEP MODE.

The ampli ers are equipped with almost completely silent, temperature-controlled fans and a

selectable input sensitivity of +4 dBU or –6 dBU for home audio application.

Integrated limiters monitor voltage, current and power at the speaker outputs and thus prevent

distortion and overload. To enable remote control, the ampli ers are equipped with an ON/OFF

contact and VCA inputs with separate channels for external volume control.

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See further technical informations in the

datasheets and on our website: https://
www.lb-lautsprecher.de/ en/Ampli ers

Operation Manual

19“ Power Amplifiers with 2 to 8 Channels

Content

Important Safety Information ................................................................. 3

Speci cations – General ........................................................................ 4

Speci cations – Model-Speci c ........................................................... 5

Front Controls ........................................................................................... 6

Backside Controls ................................................................................... 7

Cleaning the Fan Filters .......................................................................... 8

Accessories .............................................................................................. 9

External Wiring of VCA Control Inputs ................................................ 10

Block Diagram PA Series 2 to 8 Channels .......................................... 12

Technical Drawings 1 U and 2 U Power Ampli ers ............................ 13

Technical Drawings WP-V / RP-V / RP-1 U and DV Module .............. 14

Technical Drawings PA-T 100 / PA-T 200 / PA-T 400 / PA-T 1 U ......... 15

PA 2100

PA 2200

PA 2400

PA 4100

PA 4200

PA 4400

PA 6100

PA 6200

PA 6400

PA 8100

PA 8200

PA 8400

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Important Safety Information

Components inside the device may generate high voltages which can lead to life-threatening electric
shocks if touched.

CAUTION!

Service and repair work must only be carried out by qualied personnel. Do not open the case as
there is a risk of electric shock. There are no controls or components inside the device that require
you to open the case. If the case has to be opened by qualied personnel, make sure that the device
is completely disconnected from the power supply.

Use the power cable provided to connect the device to the mains. If a cable is damaged, do not try to
repair it. The device must be grounded. Never isolate the grounding on the mains plug.

The mains fuse is located inside the device. The mains fuse should only be replaced with a fuse of the
same rating. Never bypass the main fuse or replace it with a higher rating.

The operating voltage must match the local power supply.

The device should be shielded from moisture and wet conditions. It must not be operated in rain or close
to water, baths, washbasins, sinks, swimming pools or in damp environments. Do not place any objects
lled with water such as vases, glasses or bottles on the device.

Avoid direct sunlight and do not install it in the direct vicinity of radiators or other heat sources.
Upon sudden change of climatic conditions (e. g. transfer from a cold place to a warm room) water may
condense inside the device, which may lead to malfunction or damage. Before switch-on wait until the
ampliers have reached room temperature.

Unplug the mains plug to protect the device during a thunderstorm or if it is going to be left unsupervised
or unused for a longer period of time. This prevents the device being damaged by lightning strikes or
voltage surges in the mains grid. Do not touch the case when the device is in use as it may heat up
during operation. Make sure that the device is suciently ventilated.

Improper use will invalidate the warranty!

Disclaimer
lb is not liable for damage to speakers or other equipment caused by negligence or in cases where
the product has been used for something other than its intended purpose. In particular, lb is not liable
for lost earnings or other nancial losses incurred by the purchaser. This limitation also applies to the
personal liability of employees, representatives and agents.

These products meet the requirements of European Directive 2002/96/EC (WEEE) and 2002/95/EC (RoHS).

THIS UNIT MUST

BE EARTHED!

Fuse 0,5 A

slow

THIS UNIT

MUST

BE EARTHED!

Please read the following instructions carefully before installing or connecting the unit!

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Specifications – General

Inputs ................................................................. INPUT and THRU per channel, XLR symmetric

Nom. input level ................................................ –6 dBU/+4 dBU switchable

Max. input level ................................................. + 22 dBU

Input impedance .............................................. 20 kohms

Load impedance .............................................. ≥ 2 ohms/bridge ≥ 4 ohms

Outputs .............................................................. Speaker out up to 2 × 4 mm², (screw-type terminals, pluggable)

Frequency range .............................................. 20 Hz – 30 kHz (–3 dB)

THD .................................................................... < 0.05 % (1 kHz, 3 dB below full power)

Dynamic range ................................................. >100 dB

LED indicators ................................................... POWER, SLEEP, SIGNAL, LIMIT, BRIDGE, PROTECT

Controls .............................................................. Front: gain per channel, power switch

............................................................................. Back: switches for PARALLEL, BRIDGE, input sensitivity -6/+4 dBU and

............................................................................. AUTO ON/STEADY ON per channel pair; GROUND LIFT

Further connectors ........................................... VCA inputs per channel 0 – 10 V (0 V = nom. Gain, 10 V = – 80dB, 15 V = mute)

............................................................................. Remote ON/OFF contact (this contact must be closed by the shorting bridge included

............................................................................. or by an external fl oating switch to activate the ampli er; fl oating FAULT contact

Cooling .............................................................. Silent running, regulated fans, air fl ow from front to back

Protective circuits ........................................... Short circuit and overtemperature protection, inrush current limiter.

............................................................................. Peak limiter, current limiter and power limiter for each speaker output

Power supply .................................................... 230 VAC 50/60 Hz

Mains connector .............................................. IEC connector

Dimensions (W x H x D) ................................... 19” 1 U: 483 × 44 × 348 mm, 19” 2 U: 483 × 88 × 348 mm

Warranty ............................................................ 3 years

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Specifications – Model-Specific

Model Case Output Power Power Consumption Weight

Standby Sleep Idle 1/8 nom. Power Max.

PA 2100 1 U

4 ohms

8 ohms
2 ohms

bridge

2 × 100 watts
2 × 60 watts
2 × 100 watts
1 × 200 watts
(4 or 8 ohms)

0.5 8 14 40 100 6.9 kg

PA 2200 1 U

4 ohms

8 ohms
2 ohms

bridge

2 × 200 watts
2 × 120 watts
2 × 200 watts
1 × 400 watts
(4 or 8 ohms)

0.5 12 22 80 200 8.1 kg

PA 2400 1 U

4 ohms

8 ohms
2 ohms

bridge

2 × 400 watts
2 × 250 watts
2 × 400 watts
1 × 800 watts
(4 or 8 ohms)

0.5 19 33 160 380 9 kg

PA 4100 1 U

4 ohms

8 ohms
2 ohms

bridge

4 × 100 watts
4 × 60 watts
4 × 100 watts
2 × 400 watts
(4 or 8 ohms)

0.5 12 24 80 200 7.9 kg

PA 4200 1 U

4 ohms

8 ohms
2 ohms

bridge

4 × 200 watts
4 × 120 watts
4 × 200 watts
2 × 400 watts
(4 or 8 ohms)

0.5 18 36 160 400 9.8 kg

PA 4400 2 U

4 ohms

8 ohms
2 ohms

bridge

4 × 400 watts
4 × 250 watts
4 × 400 watts
2 × 800 watts
(4 or 8 ohms)

0.5 28 56 320 760 12.1 kg

PA 6100 2 U

4 ohms

8 ohms
2 ohms

bridge

6 × 100 watts
6 × 60 watts
6 × 100 watts
3 × 200 watts
(4 or 8 ohms)

0.5 16 34 120 300 10. 2 kg

PA 6200 2 U

4 ohms

8 ohms
2 ohms

bridge

6 × 200 watts
6 × 120 watts
6 × 200 watts
3 × 400 watts
(4 or 8 ohms)

0.5 24 51 240 600 12.5 kg

PA 6400 2 U

4 ohms

8 ohms
2 ohms

bridge

6 × 400 watts
6 × 250 watts
6 × 400 watts
3 × 800 watts
(4 or 8 ohms)

0.5 37 80 480 1140 14.8 kg

PA 8100 2 U

4 ohms

8 ohms
2 ohms

bridge

8 × 100 watts
8 × 60 watts
8 × 100 watts
4 × 200 watts
(4 or 8 ohms)

0.5 22 44 160 400 11.2 kg

PA 8200 2 U

4 ohms

8 ohms
2 ohms

bridge

8 × 200 watts
8 × 120 watts
8 × 200 watts
4 × 400 watts
(4 or 8 ohms)

0.5 30 67 320 700 13.3 kg

PA 8400 2 U

4 ohms

8 ohms
2 ohms

bridge

8 × 400 watts
8 × 250 watts
8 × 400 watts
4 × 800 watts
(4 or 8 ohms)

0.5 46 98 640 1520 16.6 kg