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

...

Download

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.

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

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!

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

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

765

Front Controls

1 Gain per Channel The gain controls have a logarithmic characteristic.

The nom. Sensitivity is related to MAX.

2 BRIDGE LEDs

The LEDs show, that the channel pair is switched into bridge mode.

3 SLEEP LEDs

The LEDs show, that the channel pair is temporarily switched into an idle state (SLEEP) due to absent input signal.

4 POWER LED

The LED shows, that the ampli er is switched on.

5 SIGNAL LEDs

The LEDs indicate present signals at the speaker outputs.

6 LIMIT LEDs The LEDs indicate that the limiter is active to avoid distortion.

Save operation of the ampli er is not aﬄ icted even by permanent limiting.

7 PROTECT LEDs

The LEDs show an irregular state of the corresponding

ampli er channel e.g. shortened output, DC at the output or damage. If the operating temperature exceeds the maximum allowed the ampli er goes into standby and all PROTECT LEDS are lit. While powering on all PROTECT LEDS are lit until the ampli er is ready.

8 POWER SWITCH

The ampli er turns on with approx. 5 seconds delay.

1 2 3 4

764

Backside Controls – Connectors per Channel Pair

1 Speaker Connectors

Fix the speaker cables to the screw-type terminals The speaker Impedance shouldn’t come signi cantly below 2 ohms ( 4 ohms in bridge mode)

2/6 VCA Inputs

Inputs for external volume control via our Control panels WP-V and RP-V, with the DV-Module (digital volume control) plus up/down contacts or with 0 – 10 V dimmer actuators. (0 V = nom. Gain, 10 V = –80 dB, 15 V = mute)

3/4 INPUT + THRU (CH 2, DH 4, CH 6 and CH 8)

Symmetric input und parallel outputs for looping through various inputs. In PARALLEL or BRIDGE mode these inputs are inactive.

5 MODE Switches

5.1 INPUT SENSITIVITY

In the lower position the sensitivity is switched from +4 dBU (professional) to –6 dBU for home audio applications.

5.2 STEREO/PARALLEL

In the lower position the channel pair is connected in parallel to the inputs 1, 3, 5 or 7. The gain controls on front and the VCA inputs still regulate the channels separately.

5.3 BRIDGE MODE

In the lower position the channel pair operates in bridge mode and is driven by inputs 1, 3, 5 or 7. The PARALLEL mode (5.2) must be deactivated.

1 2

5.4 STEADY ON

In the upper position the channel pairs operate in AUTO ON/OFF mode and switch automatically into an idle state (SLEEP) if the input signal is absent for over 5 min. This signi cantly reduces power consumption. In the lower position the channel pairs are permanently active.

7/8 INPUT + THRU (CH 1, DH 3, CH 5 and CH 7)

Symmetric input und parallel outputs for looping through various inputs. In PARALLEL or BRIDGE mode only these inputs are active.

9 FAULT CONTACT

Floating contact: Closes if one of the ampli er channels is malfunctioning.

10 STAND-BY

The STAND-BY contact must be closed to activate the ampli er. It may either be closed by a shorting bridge (delivery condition) or by an external ﬂ oating switch. Via this contact a single or multiple ampli ers can be remotely switched on and oﬀ by a a ﬂ oating N/O contact of a voice alarm system. In case of an announcement or if the connection to the voice alarm system is cut the contact opens and the ampli ers are shut oﬀ . After the contact is closed again the ampli ers turns on with approx. 5 seconds delay.

11 GROUND/LIFT

In the LIFT position audio inputs and outputs are softly grounded. In the GROUND position audio ground is directly connected to the mains ground.

12 IEC Connector

Connect to the power supply using the supplied power cable.

Cleaning the Fan Filters

1 1

For cleaning the fan ﬁ lters remove the front cover of the ampliﬁ er

1 Unscrew the two  xing screws and detach the front cover

and  lter foam mats.

2 Wash the foam mats and dry after.

3 Reattach cover and foam mats.

Caution! Don’t operate ampliﬁ ers without ﬁ lter foam mats!

Don’t try to clean the ﬁ lters with compressed air. This may damage the bearings of the fans inside the ampliﬁ ers.

Accessories

WP-V In wall volume control panel with ON/MUTE

switch and LED

RP-V Rack volume control panel with ON/MUTE

switch and LED

RP-1 U Rack cradle 19“, 1 U for up to 6 RP-modules

DV-Modul Digital module for volume control via

up/down contacts

PA-T 100 100 V transformer module, 100 watts toroidal core.

For PA 2100, PA 4100, PA 6100 and PA 8100

PA-T 200 100 V transformer module, 200 watts toroidal core. For PA 2200, PA 4200, PA 6200 and PA 8200

PA-T 400 100 V transformer module, 400 watts toroidal core. For PA 2400, PA 4400, PA 6400 and PA 8400

PA-T 1 U Rack cradle 19” 1 U 4 × PA-T 100, 2 × PA-T 200, 2 × PA-T 400

External Wiring of VCA Control Inputs

1-Channel Volume Control using WP-V or

RP-V

The control panels provide regulation from 0 to –80 dB and an on/oﬀ switch (ON/MUTE). “ON” is indicated by the green LED.

Multichannel Volume Control using

WP-V or RP-V

One control panel can regulate several ampli er channels in parallel. Within one multichannel ampli er only the VCA input contacts needs to be wired for parallel operation. Connecting two or more ampli ers also a ground wire is needed.

1-Channel Volume Control using the DV Module

For volume control by ﬂ oating up/down contacts the DV module can be used. Regulation is from 0 to –80 dB with 64 steps. The last level is stored automatically. The control panels provides regulation from 0 to –80 dB and an on/oﬀ switch (ON/MUTE).

External Wiring of VCA Control Inputs

Multichannel Volume Control using the DV Module

Like the WP-V or RP-V panels also the DV module may control several ampli er channels in parallel.

1-Channel Volume Control using a 0 – 10 V Dimmer Actuator with ON/OFF Contact

A passive 0 – 10 V dimmer actuator (e.g. for the KNX bus system) or a smart home controller with appropriate 0 – 10 V outputs can control the volume of a single or several ampli er channels. Additional ﬂ oating contacts allow the ON/MUTE functionality.

Multichannel Volume Control using a 0 – 10 V Dimmer Actuator with ON/OFF Contact

Like the analog volume control panels the 0 – 10 V outputs of dimmer actuators or smart home controllers may control several ampli er channels in parallel.

The 15 V outputs are constant current sources with 10 mA nom. current limit. A passive actuator pulls them down to the target level.

Regulation Characteristics

0 V at the VCA input = 0 dB (maximum) 10 V at the VCA input = –80 dB 15 V at the VCA input = mute