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11 

 

Protection 

Parameter 

Value 

Note 

Grounding 

Mains earth, chassis and audio 
ground are connected 
internally. 

 

Output short circuit current 

±40 A 

 

Output DC voltage 

±5 V @ <0.1 Hz 

 

Over-temperature 

All heatsinks and mains 
transformer 

 

Mains 

Parameter 

Value 

Note 

Mains input connector 

IEC 320 cold type 

Mains lead supplied 

Mains voltage range 

100-120 VAC, 50–6 0Hz 

115 V version 

Mains voltage range 

200-240V AC, 50-60Hz 

230 V version 

Internal mains fuse 

8 Amp 

115 V version 

Internal mains fuse 

4 Amp 

230 V version 

Power consumption 

1.5 W 

STANDBY mode 

Power consumption 

35 W 

OPERATE mode, no output. 

Power consumption 

116 W 

2 x 37.5 W/4 Ohms 

Power consumption 

820 W 

2 x 300 W/4 Ohms. 

Trigger 

Parameter 

Value 

Note 

TRIGGER IN connector 

3.5 mm (1/8") mono jack 

Case=Gnd, Tip=Input 

TRIGGER BYPASS connector 3.5 mm (1/8") mono jack 

Case=Gnd, Tip=Output 

TRIGGER IN impedance 

10 Kohm 

 

TRIGGER IN sensitivity 

4 VDC or 4Vp AC 

Positive DC voltage on Tip. AC 
> 50 Hz 

Max. input voltage 

±25 Vp 

 

 

Mechanical 

Parameter 

Value 

Note 

Width 

450 mm (17.72") 

 

Depth 

340 mm (13.39") 

Excluding loudspeaker 
connectors. 

Depth 

361 mm (14.21") 

Including loudspeaker 
connectors. 

Height 

88.8 mm (3.5") 

Excluding feet. 

Height 

100.6 mm (3.96") 

Including feet. 

Net weight 

15.5 kg (34 lb.) 

 

Shipping weight 

17.5 kg (39 lb.) 

 

 

Summary of Contents for SDA 2175

Page 1: ...SDA 2175 Compact Analog Power Amplifier Owner s Manual...

Page 2: ...ns 5 Introduction 6 Front panel 6 Controls 6 Indicators 6 Rear panel 7 Mains Connector 7 Loudspeaker connectors 7 Input connectors 8 Balanced inputs 8 Unbalanced inputs 9 Trigger connectors 9 Cleaning...

Page 3: ...in the literature accompanying the product Lightning symbol The lightning with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated Dangerous Vo...

Page 4: ...moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Connect only to the proper mains voltag...

Page 5: ...he mains voltage setting for your SDA 2175 can be changed ONLY BY A QUALIFIED TECHNICIAN WARNING Connect the power input only to the AC source printed on the label The warranty will not cover any dama...

Page 6: ...strumentation type input amplifier Except for the input amplifier the SDA 2175 is fully DC coupled with no bypass capacitors or DC servos to degrade performance The protection circuitry in the SDA 217...

Page 7: ...ins Loudspeaker connectors The SDA 2175 loudspeaker connectors accept banana plugs spades or bare wire ends up to 5 mm in diameter Connect the wires from each loudspeaker to each channel s and termina...

Page 8: ...nced inputs The balanced XLR inputs are wired in accordance with IEC268 Pin 1 Chassis and ground Pin 2 Hot Pin 3 Cold Shell Chassis and ground When the balanced inputs are used with a balanced source...

Page 9: ...he TRIGGER IN socket the SDA 2175 standby mode is controlled by the voltage on the plug With no voltage applied the SDA 2175 will go into standby mode If a DC voltage of 5 24V or a 50Hz AC voltage of...

Page 10: ...Nominal load impedance 4 8 Ohms It is safe to operate the amplifier with no load Frequency response 0 3 Hz 33 kHz 3 dB points 8 Ohms load Frequency response 0dB 0 2dB 20 Hz 20 kHz 8 Ohms load Frequen...

Page 11: ...on 1 5 W STANDBY mode Power consumption 35 W OPERATE mode no output Power consumption 116 W 2 x 37 5 W 4 Ohms Power consumption 820 W 2 x 300 W 4 Ohms Trigger Parameter Value Note TRIGGER IN connector...

Page 12: ...epresentative Support Please check the Lyngdorf Audio Denmark website under Support for latest version of control software newest version of this document and Questions and Answers Lyngdorf Audio Denm...

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