Dynacord LX1600, LX3000, LX2200 User Manual

SWITCHMODE PRECISION SERIES

ultra light weight power amplifiers

ENGLISH

LX1600 • LX2200 • LX3000

PHILOSOPHY

For decades, DYNACORD has been one of the leading manu­facturers in the pro audio sector and has established a com­manding position in the amplifier market thanks to the excellent
audio performance, absolute reliability and high stability of the
Linear Precision series.

SWITCHMODE TECHNOLOGY

The combination of an analogue class-H design with a
state-of-the-art switching power supply has made possible
the creation of a professional power amplifier delivering up
to 2 x 1500 watts into 4 ohms with excellent audio specifi-
cations but weighing only 8.7 kg. Even complex loads as low
as 2 ohms can be driven with absolute reliability. Amp racks
containing several LX power amplifiers for active multi-way
use are therefore easy to manipulate.

CLASS - H TECHNOLOGY

With this technology, two different power supply rails are permanently available
internally to the power amplifier blocks. For most of the program material, the lower
operating voltage is able to reproduce the audio signal flawlessly; however, as soon
as there are dynamic peaks, the amplifier switches internally and at high speed to
the higher supply voltage. Since for long periods the power amplifier blocks are ope­rating with the lower supply voltage, there is considerably less power dissipation
than with conventional class AB power amplifiers, which also means considerably
less waste heat.

Class H
konventionell

Output Power

Power Consumption Power Dissipation

DYNAMIC LIMITERS

Dynamic limiters are general components in all DYNACORD power amplifiers. High­speed audio processors are continuously comparing the input signal to the output signal,
and in the event of any non-linearity, the processors send control signals to the limiters,
which operate dynamically upon the input level. As a result, the THD all the way up to
21 dBU is limited to an inaudible 1% max at the output.

LPN + LO-CUT

The retrofittable NRS 90268 kit, which is available as an option for all LX power ampli­fiers, combines the patented LPN (low-pass notch) filter with a low-cut filter. These eli­minate transient non-linearities in the low frequency range in small to medium-sized full­range speakers and thereby considerably extend the reproducible range at the bottom
end. The acoustic result is bass reproduction with more punch and greater substance.

21 dBu

THD = 1%

• Comprehensive set of protective circuits • High-efficiency class-H design • Switching power supply

• Extremely light and compact • Dynamic audio limiter • Highest reliability at 2 ohms

• 30% dynamic headroom • Constant gain with 32dB • Precise raster pots on the front panel

SWITCHMODE PRECISION SERIES

ultra light weight power amplifiers

FRONT

The dB-calibrated level controls are implemented as ultra-precise detent potentiometers that are recessed in the front panel to pro­tect them from accidental contact. Power, Protect, Signal and Limit LEDs provide a quick overview of the operating status.

SAFETY PACKAGE

The complete LX series is equipped with protections against
overheating, overloading, short-circuits, DC and HF as well as a
Back-EMF protection. With the Soft Start system, the power out-

puts are switched on via a relay when a safe operational state
has been reached and a power-up delay prevents the mains
fuses being activated.

LX1600

With an output rated at 2 x 1300 watts into 2 ohms
and 2 x 800 watts into 4 ohms, this is the ideal
power amplifier for small to medium-sized full-range
cabinets and MF/HF components in active multi­way systems.

REAR

The electronically balanced XLR IN / OUT sockets are
provided for direct operation with professional mixing
consoles and signal processors. All the models in the
LX series are designed for a Constant Gain of 32 dB.
The power outputs for Channels A and B are on
Speakon connectors. A Ground Lift switch is also provi­ded to separate the chassis ground from the signal
ground in order to eliminate ground loop hum.

LX2200

With a stable output of 2 x 1600 watts into 2 ohms and
2 x 1100 watts into 4 ohms, this is the ideal amplifier for
professional multi-way components as well as medium­sized subwoofers in concert sound systems.

LX3000

The new flagship of the LX series delivers a
mighty 2 x 2100 watts into 2 ohms and 2 x 1500
watts into 4 ohms and therefore has plenty of
headroom for large subwoofer arrays.

SWITCHMODE PRECISION SERIES

ultra light weight power amplifiers

SWITCHMODE PRECISION SERIES

ultra light weight power amplifiers

TECHNICAL SPECIFICATIONS

LX1600 LX2200 LX3000

Load Impedance

2 ohms

4 ohms 8 ohms

2 ohms

4 ohms 8 ohms

2 ohms

4 ohms 8 ohms

Max. Midband Output Power

THD = 1%, 1kHz

1300 W 800 W 500 W 1600 W 1100 W 600 W 2100 W 1500 W 900 W

Rated Output Power

THD < 0.1%, 20Hz … 20kHz

---- 700 W 350 W ---- 900 W 450 W ---- 1200 W 600 W

Max. Single Channel Output Power

Dynamic Headroom, IHF-A

2200 W 1200 W 625 W 2600 W 1400 W 720 W 2900 W 1800 W 1000 W

Max. Single Channel Output Power

Continuous, 1kHz

1700 W 1000 W 550 W 2100 W 1300 W 660 W 2600 W 1700 W 950 W

Max. Bridged Output Power

THD = 1%, 1kHz

---- 2600 W 1600 W ---- 3200 W 2200 W ---- 4200 W 3000 W

Maximum RMS Voltage Swing

THD = 1%, 1kHz

72 V 78 V 95 V

Power Bandwith, ref. 1kHz

THD =1%, half power @ 4 ohms

10Hz … 60kHz

Voltage Gain, ref. 1kHz 32.0 dB

Input Sensitivity

rated power @ 8 ohms, 1kHz

+4.7 dBu (1.33 V rms) +5.8 dBu (1.51 V rms) +7.0 dBu (1.74 V rms)

THD at rated output power

MBW = 80kHz, 1kHz

< 0.05%

IMD-SMPTE, 60Hz, 7kHz < 0.02%

DIM 30, 3,15kHz, 15kHz < 0.05%

Maximum Input Level +22 dBu (9.76 V rms)

Crosstalk

ref. 1kHz, at rated output power

< -80 dB

Frequency Response, ref 1kHz 15Hz … 40kHz (-1dB)

Input Impedance, active balanced 20 kohms

Damping Factor, 1kHz > 300

Slew Rate 30 V/µs 35 V/µs 38 V/µs

Signal to Noise Ratio, A-weighted 107 dB 107 dB 108 dB

Output Stage Topology Class H

Power Requirements 100V, 120V, 220V, 230V, 240 V; 50Hz … 60Hz (factory configured)

Power Consumption

1/8 max. output power @ 4 ohms

625 W 850 W 1070 W

Protection

Audio Limiters, High Temperature, DC, HF, Back-EMF,

Peak current Limiters Inrush Current Limiters, Turn-On delay

Cooling Front-to rear, 3-stage fans

Ambient Temperature Limits +5° … +40° ( 40°F … 105°F )

Safety Class I

Dimensions ( W x H x D ) mm 483 x 88.1 x 384

Weight 7.80 kg (17.2 lbs) 8.15 kg (18.0 lbs) 8.70 kg (19.2 lbs)

Optional Accessories:

Rear Rackmount 15.5" D112 930 (RMS15-CL)

Rear Rackmount 18.0" D112 933 (RMS18-CL)

LPN + Lo-Cut Filter D112963 (NRS 90268)

Americas

Telex Communications Inc.
12000 Portland Ave South,
Burnsville, MN 55337, USA

USA: Phone: [phone]

Fax: [phone]

Canada: Phone: [phone]

Fax: [phone]

Latin America: Phone: [phone]

Fax: [phone]

Europe, Africa & Middle-East

Germany: EVI Audio GmbH.

Hirschberger Ring 45,
D-94315 Straubing, Germany
Phone: [phone]
Fax: [phone]

France: EVI Audio France S.A.,

Parc de Courcerin,
Allée Lech Walesa,
F 77185 Lognes, France
Phone: [phone]
Fax: [phone]

UK: Shuttlesound,

4 The Willows Centre,
Willow Lane, Mitcham,
Surrey CR4 4NX, UK
Phone: [phone]
Fax: [phone]

Asia & Pacific Rim

Japan: EVI Audio Japan Ltd.

5-3-8 Funabashi, Setagaya-Ku,
Tokyo, Japan 156-0055
Phone: [phone],
Fax: [phone]

China: Telex EVI Audio (Shanghai) Ltd.

Room 2210-2215,
Tower B, Far East International

Plaza

No. 317, Xianxia Road,
Shanghai, China, PC: 200051
Phone: [phone]
Fax: [phone]

Hong Kong: Telex EVI Audio (HK) Ltd.

Unit 5,1/F,Topsail Plaza
11 On Shum Street
Shek Mun,Shatin HK
Phone: [phone]
Fax: [phone]

Singapore: Telex Pte. Ltd.

3015A Ubi Road 1, 05-10
Kampong Ubi Industrial

Estate,

Singapore 408705
Phone: [phone]
Fax: [phone]

Be Heard. © 2006 TELEX Communications, Inc. · Art.Nr. D163072 · Printed in Germany (BECK/DR) · 5000/01/06