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Technical and Safety Notices

Please read the following important technical, safety 

and environmental notices before installing and using 

your amplifier.

Technical Notices

All reasonable design and engineering steps have been taken 

to ensure that these amplifiers always perform satisfactorily 
in their intended application and environment and will provide 
appropriate levels of support to ensure that all reasonable 
customer needs and expectations are met. Such support 
however is contingent on the following provisions.

1. 

These amplifiers are Class-I products and should be installed 

with a mains cable including the required earth connection to 
comply with the Safety Class-I.

2.

 These amplifiers should always be installed by competent 

and qualified personnel. Amplifier damage or failure caused 
by installation or operational errors may invalidate support, 
warranty or guarantees of performance.

3.

 These amplifiers are not suitable for use in locations where 

they may be accessible to minors.

4.

 These amplifiers are intended to be used specifically for the 

amplification of audio signals and for connection to moving-coil 
loudspeaker systems. Use of these amplifiers for amplification 
of signals outside the audio band (20Hz to 20kHz) or to 
drive transducers other than moving-coil loudspeakers may 
invalidate support, warranty or guarantees of performance.

5.

 These amplifiers should only be used within professionally 

installed and configured audio systems comprising input 
and output ancillary equipments that is known to be of an 
appropriate level of performance and in good operating 
condition. Any damage to, or unsatisfactory performance from, 
these amplifiers caused by inadequate or failed input or output 
ancillaries may invalidate support, warranty or guarantees of 
performance.

6.

 These amplifiers are intended to be installed and operated 

indoor in a controlled environment (pollution degree, PD2) 
within an ambient temperature range of 0°C to 40°C. These 
amplifiers are not intended for use above 2000 meters above 
sea level. Amplifiers installed or operated in environments 
outside these limits may invalidate support, warranty or 
guarantees of performance.

7.

 Specific warranty terms are the responsibility of the amplifier 

re-seller.

Safety and Environmental Notices

Note: The intent of the lightning flash with arrowhead symbol 
in a triangle is to alert the user to the presence of uninsulated 
“dangerous” voltage within the product’s enclosure that may be of 
sufficient magnitude to constitute a risk of electric shock to humans.

Note: The intent of the exclamation point within an equilateral 
triangle is to alert the user to the presence of important safety, and 
operating and maintenance instructions in this manual.

WARNING! TO PREVENT FIRE OR ELECTRIC SHOCK, 

DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR 

MOISTURE.

Ambient Temperature Note: If this equipment is 

operated in a confined or multiple rack installation, the 

internal ambient operating temperature may exceed 

the external ambient temperature. 

It is important to ensure in these 

circumstances that the published 

maximum operating temperature for the 

equipment is not exceeded.

Reduced Air Flow: Ensure that rack or 

other closed installation does not restrict 

the cooling airflow required for safe and 
reliable operation of the equipment.

Summary of Contents for DSA125X4

Page 1: ...INSTALLATION GUIDE USER MANUAL DSA125X4 Rev 20220706...

Page 2: ...vel of performance and in good operating condition Any damage to or unsatisfactory performance from these amplifiers caused by inadequate or failed input or output ancillaries may invalidate support w...

Page 3: ...particularly at plugs convenience receptacles and the point where they exit from the apparatus 14 Do not unplug the unit by pulling on the cord use the plug 15 Only use attachments accessories specifi...

Page 4: ...ation 5 Configuration 6 Connections 7 Operation 8 Specifications 2 Amplifier Overview Danley DSA125X4 amplifiers are half rack width 1U format power amplifiers that can drive both conventional low imp...

Page 5: ...iers are primarily intended for installation in an equipment rack but can also be under desk or wall mounted or used free standing They are fan cooled and must be installed such that ventilation apert...

Page 6: ...Shaded area defines ventilation space Diagram 1a Danley DSA two channel amplifier dimensions Shaded area defines ventilation space 44 mm 1 7 in 44 mm 1 7 in 220 mm 8 7 in 220 mm 8 7 in 213 mm 8 4 in 8...

Page 7: ...ier at all times Ventilation apertures are also located on the rear panel of the amplifier and must not be obstructed It is important to retain at least 80 mm 3 1 in free space for airflow behind the...

Page 8: ...unted using connecting plate hardware The adhesive rubber feet should also be used in these circumstances to minimise the possibility of vibration between the amplifier and mounting surface Wall and d...

Page 9: ...mplifier default LAN IP address is 192 168 64 100 Configure the laptop or desktop computer for a fixed IP address in the same IP range eg 192 168 64 10 with Subnet mask of 255 255 255 0 or prefix 24 a...

Page 10: ...ity option Adjust input gain Adjust zone volume Adjust zone volume Note When adjusting input gain the input level display should remain green If it displays red the input gain should be reduced 5 3 Co...

Page 11: ...b menus For all Output Tab menus the amplifier output under configuration is selected by highlighting one of the output identifiers 1 2 3 or 4 at the top of the display The Output Tab also enables Spe...

Page 12: ...d in Section 5 3 5 2 Select the appropriate zcp format speaker preset data file to import from either a Library or a computer folder The preset data will be applied to the selected amplifier output as...

Page 13: ...arameters adjust automatically in response to Crossover Gain high pass filter settings The Output Mode preset menu enables individual amplifier outputs to be switched off or configured for Lo Z or Hi...

Page 14: ...nder the Device menu The Backup Restore menu enables amplifier configuration data to be downloaded to an external archive and enables previously saved configuration files to be uploaded and adopted by...

Page 15: ...Gain Trim Gain Trim Gain Trim Input Sensitivity Input Gain Input Gain Input Selection Input Setup Zone Setup Routing Output Setup Output 1 Output 2 Output 3 Output 4 Zone Adjustment Parameters Speake...

Page 16: ...elect the zone to be configured The number of zones available and their channel format stereo or mono will depend on the amplifier model input setup and output mode Lo Z or Hi Z For example a two outp...

Page 17: ...in 8 has a low output impedance and is able to supply a maximum current of 10mA Note GPIO Pin 1 and Pin 3 both offer ground connections Pin 1 is connected directly to the amplifier chassis Pin 3 is co...

Page 18: ...ions Note Two output amplifier model connection sockets differ only in the deletion of channel 3 and channel 4 output connectors Digital Inputs Danley DSA amplifier S PDIF stereo digital audio input c...

Page 19: ...A amplifiers to a TCP IP network is described in Section 5 of this manual Cable Gauge Table Lo Z installations 0 5dB attenuation 4 8 loads Cable Gauge Table 70V Hi Z installations 1 0dB attenuation 20...

Page 20: ...e exclamation point printed next to the output terminals of the amplifiers is in addition to the CLASS 2 WIRING text intended to alert users to the risk of hazardous voltages Output connectors that co...

Page 21: ...ts Output Off No output signal present Green Signal present on one or more outputs Amber Signal limiting clipping on one or more outputs Red One or more channel pair is in overload protection mode Net...

Page 22: ...0Hz 20kHz 8 load THD N typical 0 05 20Hz 20kHz 8 load 3dB below rated power Frequency Response 20Hz 20kHz 0 0 25dB 8 load 3dB below rated power Protection Circuits Short circuit DC Undervoltage Temper...

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