Dynacord LX1600, LX3000, LX2200 User Manual

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ultra light weight power amplifiers

LX1600 LX2200LX3000


SWITCHMODE PRECISION SERIES ultra light weight power amplifiers


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.


The combination of an analogue class-H design with astate-of-the-artswitching power supply has made possible the creation of a professional power amplifier delivering up to2 x 1500 watts into 4 ohms with excellent audio specifications but weighing only8.7 kg. Even complex loads as low as 2 ohms can be driven with absolute reliability. Amp racks containing several LX power amplifiers for activemulti-wayuse are therefore easy to manipulate.

• Comprehensive set of protective circuits • High-efficiencyclass-Hdesign • 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

Class H


Output Power

Power Consumption Power Dissipation


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.

THD = 1%

21 dBu


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.


The retrofittable NRS 90268 kit, which is available as an option for all LX power amplifiers, combines the patented LPN(low-passnotch) filter with alow-cutfilter. These eliminate transientnon-linearitiesin the low frequency range in small tomedium-sizedfullrange speakers and thereby considerably extend the reproducible range at the bottom end. The acoustic result is bass reproduction with more punch and greater substance.

SWITCHMODE PRECISION SERIES ultra light weight power amplifiers


The dB-calibratedlevel controls are implemented asultra-precisedetent 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.


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. AGround Lift switch is also provided to separate the chassis ground from the signal ground in order to eliminate ground loop hum.


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-sizedfull-rangecabinets and MF/HF components in active multiway systems.


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-waycomponents as well as mediumsized subwoofers in concert sound systems.


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.


The complete LX series is equipped with protections against overheating, overloading, short-circuits,DC and HF as well as aBack-EMFprotection. 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-updelay prevents the mains fuses being activated.

SWITCHMODE PRECISION SERIES ultra light weight power amplifiers










Load Impedance

2 ohms

4 ohms

8 ohms

2 ohms

4 ohms

8 ohms

2 ohms

4 ohms

8 ohms

Max. Midband Output Power

1300 W

800 W

500 W

1600 W

1100 W

600 W

2100 W

1500 W

900 W

THD = 1%, 1kHz










Rated Output Power


700 W

350 W


900 W

450 W


1200 W

600 W

THD < 0.1%, 20Hz … 20kHz










Max. Single Channel Output Power

2200 W

1200 W

625 W

2600 W

1400 W

720 W

2900 W

1800 W

1000 W

Dynamic Headroom, IHF-A










Max. Single Channel Output Power

1700 W

1000 W

550 W

2100 W

1300 W

660 W

2600 W

1700 W

950 W

Continuous, 1kHz










Max. Bridged Output Power


2600 W

1600 W


3200 W

2200 W


4200 W

3000 W

THD = 1%, 1kHz










Maximum RMS Voltage Swing


72 V



78 V



95 V


THD = 1%, 1kHz
















Power Bandwith, ref. 1kHz




10Hz … 60kHz





THD =1%, half power @ 4 ohms

















Voltage Gain, ref. 1kHz





32.0 dB





Input Sensitivity

+4.7 dBu (1.33 V rms)

+5.8 dBu (1.51 V rms)

+7.0 dBu (1.74 V rms)

rated power @ 8 ohms, 1kHz










THD at rated output power





< 0.05%





MBW = 80kHz, 1kHz


















IMD-SMPTE,60Hz, 7kHz





< 0.02%





DIM 30, 3,15kHz, 15kHz





< 0.05%





Maximum Input Level




+22 dBu (9.76 V rms)










< -80dB





ref. 1kHz, at rated output power


















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


625 W



850 W



1070 W


1/8 max. output power @ 4 ohms




















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






Peak current Limiters Inrush Current Limiters, Turn-Ondelay
















Ambient Temperature Limits




+5° … +40° ( 40°F … 105°F )




Safety Class











Dimensions ( W x H x D ) mm




483 x 88.1 x 384






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-CutFilter




D112963 (NRS 90268)






Europe, Africa & Middle-East

Asia & Pacific Rim










EVI Audio Japan Ltd.




Telex Communications Inc.


EVI Audio GmbH.



Hong Kong:

Telex EVI Audio (HK) Ltd.

12000 Portland Ave South,


Hirschberger Ring 45,


Tokyo, Japan 156-0055



Unit 5,1/F,Topsail Plaza

Burnsville, MN 55337, USA


D-94315Straubing, Germany


Phone: +81 3-5316-5020,



11 On Shum Street




Phone: +49 9421 706-0


Fax: +81 3-5316-5031



Shek Mun,Shatin HK




Fax: +49 9421 706-265


Telex EVI Audio (Shanghai) Ltd.


Phone: +852 2351-3628


Phone: 1-800-392-3497





Fax: +852 2351-3329


EVI Audio France S.A.,


Room 2210-2215,




Fax: 1-800-955-6831







Parc de Courcerin,


Tower B, Far East International


Telex Pte. Ltd.






Phone: 1-866-505-5551


Allée Lech Walesa,






3015A Ubi Road 1, 05-10


Fax: 1-866-336-8467


F 77185 Lognes, France


No. 317, Xianxia Road,



Kampong Ubi Industrial

Latin America:

Phone: 1-952-887-5532


Phone: +33 1-6480-0090


Shanghai, China, PC: 200051




Fax: +33 1-6006-5103


Phone: +86 (21) 6235-1677


Singapore 408705


Fax: 1-952-736-4212









Fax: +86 (21) 6235-1676



Phone: +65 6746-8760

















Fax: +65 6746-1206




4 The Willows Centre,


















Willow Lane, Mitcham,










Surrey CR4 4NX, UK










Phone: +44 208 646 7114










Fax: +44 208 254 5666







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