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H-Amp-XXXV dual channel
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Discontinued Products


Development is essential to all companies and also to Ground Sound. The new products developed by Ground Sound are all based upon the "old" discontinued products. Below you can find the discontinued products and the technical manuals. The discontinued are still very high quality products and will work for years to come.

 

Active Amplifier Solution 


 

Coolback II300 in detail
Coolback II 300 * Obsolete
  • Black Anodized
  • Dimensions: 58cm x 16cm x 10+4cm
  • Weight: 9kg
  • DCN23 - 3-way Digital Crossover
  • PA1CC - Power Amplifier 100W
  • PA3CC - Power Amplifier 300W
  • PSU4SA - Power Supply
  • 300VA - Mains Transformer
  • Neutrik XLR 3-pole input
  • Neutrik USB adaptor
  • IEC Mains connector
  • Function Switch

 

Coolback 600 in detail
Coolback 600_2014 * Obsolete
  • Black Anodized
  • Dimensions: 55cm x 25cm x 10+4cm
  • Weight: 15kg
  • DCN23 - 3-way Digital Crossover
  • PA3CC - Power Amplifier 300W
  • PSU12SA - Power Supply
  • 550VA - Mains Transformer
  • Neutrik XLR 3-pole input
  • Neutrik USB adaptor
  • IEC Mains connector
  • Function Switch

 


Coolback II 600 * Obsolete
  • Black Anodized
  • Dimensions: 60cm x 18cm x 10cm
  • Weight: 14kg
  • DCN23 - 3-way Digital Crossover
  • PA1CC - Power Amplifier 100W
  • PA3CC - Power Amplifier 300W
  • PSU8SA - Power Supply
  • TR600 - Mains Transformer
  • Neutrik XLR 3-pole input
  • Neutrik USB adaptor
  • IEC Mains connector
  • Function Switch

 


Coolback 300 * Obsolete
  • Easy assembly kit with all parts
  • Black Anodized
  • Dimensions: 60cm x 18cm x 10cm
  • Weight: 14kg
  • DCN23 - 3-way Digital Crossover
  • PA1CC - Power Amplifier 100W
  • PA3CC - Power Amplifier 300W
  • PSU8SA - Power Supply
  • TR600 - Mains Transformer
  • Neutrik XLR 3-pole input
  • Neutrik USB adaptor
  • IEC Mains connector
  • Function Switch

 


Coolback 600 * Obsolete
  • Easy assembly kit with all parts
  • Black Anodized
  • Dimensions: 100cm x 22cm x 10cm
  • Weight: 14kg
  • DCN23 - 3-way Digital Crossover
  • PA1CC - Power Amplifier 100W
  • PA3CC - Power Amplifier 300W
  • PSU12SA - Power Supply
  • TR600 - Mains Transformer
  • Neutrik XLR 3-pole input
  • Neutrik USB adaptor
  • Neutrik PowerCon Mains connector
  • Function Switch

 


Chassis 600 * Obsolete
  • Easy assembly kit with all parts
  • Black Anodized
  • Dimensions: 58cm x 16cm x 10+4cm
  • Weight: --kg
  • DCN23 - 3-way Digital Crossover
  • PA1CC - Power Amplifier 100W
  • PA3CC - Power Amplifier 300W
  • PSU4SA - Power Supply
  • 300VA - Mains Transformer
  • Neutrik XLR 3-pole input
  • Neutrik USB adaptor
  • IEC Mains connector
  • Function Switch

 


Chassis 1500 * Obsolete
  • Easy assembly kit with all parts
  • Black Anodized
  • Dimensions: 65cm x 20cm x 11+4cm
  • Weight: --kg
  • DCN14 - 4-way Digital Crossover
  • PA1CC - Power Amplifier 100W
  • PA3CC - Power Amplifier 300W
  • HPA1K - Power Amplifier 600W
  • PSU8AGS - Power Supply
  • 800VA - Mains Transformer
  • Neutrik XLR 3-pole input
  • USB programming connector
  • IEC Mains connector
  • Function Switch

 

 

Digital Crossover Modules 


DCN23 in detail
DCN23 revision 2 * Obsolete
  • Digital Crossover Network
  • 2 balanced analogue inputs
  • 3 single-ended analogue outputs
  • High performance TI converters
  • 24bit 96kHz 108dB S/N
  • Signal processing IIR
  • Total processing power: 48 biquads
  • Optical isolated USB PC-interface
  • Decoupling at all active components
  • Multilayer board for best performance
  • XOverWizard Software
  • or XOverWizard II Software

 

DCN24 in detail
DCN24 * Obsolete
  • Digital Crossover Network
  • 2 balanced analogue inputs
  • 4 single-ended outputs
  • High performance Burr-Brown converters
  • 24bit 96kHz 108dB S/N
  • Signal processing IIR
  • Total processing power: 180 biquads
  • Optical isolated USB PC-interface
  • Auto Sensing output
  • Decoupling at all active components
  • Multilayer board for best performance
  • XOverWizard II Software

 

DCN24RPC in detail
DCN24RPC * Obsolete
  • Digital Crossover Network
  • 2 balanced analogue inputs
  • 4 single-ended outputs
  • High performance TI converters
  • 24bit 96kHz 108dB S/N
  • 2 Input Processing Presets
  • Signal processing IIR
  • Total processing power: 180 biquads
  • Optical isolated USB PC-interface
  • Decoupling at all active components
  • Multilayer board for best performance
  • XOverWizard II Software

 

 

Digital Crossover 



DCN23BOX kit * Obsolete
  • Digital Crossover
  • 2 XLR inputs
  • 3(4) RCA outputs
  • High performance Burr-Brown converters
  • 24bit 96kHz 110dB S/N
  • Signal processing IIR
  • Total processing power: 48 biquads
  • Optical isolated USB PC-interface
  • 50mm x 232mm x 151mm
  • XOverWizard Software
  • or XOverWizard II Software

 

 

Power Amplifier Modules 


PA1CC in detail
PA1CC - Not sold separately
  • Power Amplifier
  • Classical Class AB
  • Cascode coupled diff. input stage
  • 2 high speed bipolar output devices
  • 150W RMS max
  • 120dB S/N - 20,5dB gain
  • Short circuit protection
  • Thermal protection
  • Mute control
  • Unique heatsink profile for best heat transfer
  • Dual easy mounting option

 

PA3CC in detail
PA3CC revision 2 - Not sold separately
  • Power Amplifier
  • Classical Class AB
  • Cascode coupled diff. input stage
  • Cascode coupled voltage gain stage
  • 6 high speed bipolar output devices
  • 400W RMS max
  • 120dB S/N - 22dB gain
  • Short circuit protection
  • Thermal protection
  • Mute control
  • Unique heatsink profile for best heat transfer
  • Dual easy mounting option

 


PA6CC - Not sold separately
  • Power Amplifier
  • Classical Class AB
  • Cascode coupled diff. input stage
  • Cascode coupled voltage gain stage
  • 12 high speed bipolar output devices
  • 800W RMS max
  • 120dB S/N - 23,5dB gain
  • Short circuit protection
  • Thermal protection
  • Mute control
  • Unique heatsink profile for best heat transfer
  • Dual easy mounting option

 


PA12CC - Not sold separately
  • Power Amplifier
  • Classical Class AB
  • Cascode coupled diff. input stage
  • Cascode coupled voltage gain stage
  • 24 high speed bipolar output devices
  • 1500W RMS max
  • 120dB S/N - 23,5dB gain
  • Short circuit protection
  • Thermal protection
  • Mute control
  • Unique heatsink profile for best heat transfer

 


HPA1K - Not sold separately
  • Power Amplifier
  • Classical Class H
  • Cascode coupled diff. input stage
  • Cascode coupled voltage gain stage
  • 4 high speed bipolar output devices
  • 1kW+ max output power
  • 120dB S/N - 23,5dB gain
  • Short circuit protection
  • Thermal protection
  • Mute control
  • Unique heatsink profile for best heat transfer

 


HPA2K - Not sold separately
  • Power Amplifier
  • Classical Class H
  • Cascode coupled diff. input stage
  • Cascode coupled voltage gain stage
  • 8 high speed bipolar output devices
  • 2kW+ max output power
  • 120dB S/N - 26,5dB gain
  • Short circuit protection
  • Thermal protection
  • Mute control
  • Unique heatsink profile for best heat transfer

 

 

Power Supply Modules 



PSU4SA revision 2 * Obsolete
  • Power Supply Unit
  • 4 capacitors
  • Softstart
  • Autosensing
  • Mute control output
  • ON-Standby-Auto switch
  • On-Standby LED
  • Linear regulated low voltage
  • Mains filter for low power section
  • Supplying DCN23 and power amps

 


PSU12SA revision 3 * Obsolete
  • Power Supply Unit
  • 230Vac or 115Vac mains voltage
  • 12 capacitors
  • Custom-made 10VA Transformer
  • Softstart
  • Autosensing
  • Mute control output
  • ON-Standby-Auto switch
  • On-Standby LED
  • Linear regulated low voltage
  • Mains filter for low power section
  • Supplying DCN23/DCN24 and power amps

 

PSU4DB in detail
PSU4DB * Obsolete
  • Power Supply Unit
  • 4 capacitors
  • Double bridge for reduced ground noise
  • 35A bridge rectifier for less power losses
  • Two bleeder resistors for failure safety
  • Application: High-End Stereo Amplifier

 

PSU8DB in detail
PSU8DB * Obsolete
  • Power Supply Unit
  • 8 capacitors
  • Double bridge for reduced ground noise
  • 35A bridge rectifier for less power losses
  • Two bleeder resistors for failure safety
  • Application: High-End Stereo Amplifier

 

PSU12DB in detail
PSU12DB * Obsolete
  • Power Supply Unit
  • 12 capacitors
  • Double bridge for reduced ground noise
  • 35A bridge rectifier for less power losses
  • Two bleeder resistors for failure safety
  • Application: High-End Stereo Amplifier

 

AmpC in detail
AmpC trig - Not sold separately
  • Amplifier Control Board
  • Softstart
  • Remote 12V trigger power ON
  • Mute control output
  • Power On LED output option
  • 10A max
  • Adaptation to transformer voltage
  • Easy connect to Ground Sound amp modules

 

AmpC in detail
AmpC - Not sold separately
  • Amplifier Control Board
  • Softstart
  • Mute control output
  • 10A max
  • Adaptation to transformer voltage
  • Easy connect to Ground Sound amp modules
  • Optinal mute control with opto-coupler

 

PSU8AGS in detail
PSU8AGS - Not sold separately
  • Power Supply Unit
  • Application: High-End Active Amplifier
  • 8 pcs. Audio Grade Electrolytic Capacitors
  • Power supply for PA1CC, PA3CC, HPA1K and HPA2K
  • Power supply for DCN14 or DCN22
  • Auto Sensing & Operation Switch
  • Soft Start circuitry

 

PSU8H in detail
PSU8H - Not sold separately
  • Power Supply Unit
  • 8 capacitors
  • 35A bridge rectifier for less power losses
  • Two/four bleeder resistors for failure safety
  • Application: High-End Stereo Amplifier

 

PSU16H in detail
PSU16H - Not sold separately
  • Power Supply Unit
  • 16 capacitors
  • 35A bridge rectifier for less power losses
  • Two/four bleeder resistors for failure safety
  • Application: High-End Stereo Amplifier

 

PSU DCN II in detail
PSU DCN II * Obsolete
  • Power Supply Unit
  • 230Vac or 115Vac mains voltage
  • Supplying one DCN23 or DCN24
  • Custom-made 10VA Transformer
  • Linear regulated 3,3V digital supply 150mA
  • Linear regulated 5V analog supply 150mA
  • Linear regulated +/- 15V op-amp supply 100mA
  • incl. relay board for DCN23/24 outputs
  • Delayed unmute by relays
  • Fast muting by relays
  • On LED

 

 

Transformers 



TR300VA * Obsolete
  • Toroidal transformer
  • Silent Design
  • 230-240V/50-60Hz
  • 2 x 35V 300VA
  • Centerpotted
  • Mounting hole 8mm
  • 3kg
  • Dim. 110mm (dia.) x 65mm

 

TR550 in detail
TR550VA * Obsolete
  • Toroidal transformer
  • Silent Design
  • 230-240V/50-60Hz
  • 2 x 50V 550VA
  • Centerpotted
  • Mounting hole 8mm
  • 5kg
  • Dim. 130mm (dia.) x 70mm

 


TR600VA * Obsolete
  • Toroidal transformer
  • Silent Design
  • 230-240V/50-60Hz
  • 2 x 45V 600VA
  • Centerpotted
  • Mounting hole 8mm
  • 6kg
  • Dim. 140mm (dia.) x 65mm

 


TR1000VA * Obsolete
  • Toroidal transformer
  • Silent Design
  • 230-240V/50-60Hz
  • 2 x 65V 1000VA
  • Centerpotted
  • Mounting hole 8mm
  • 8,5kg
  • Dim. 170mm (dia.) x 75mm

 


TR1500VA * Obsolete
  • Toroidal transformer
  • Super Silent Design
  • 230-240V/50-60Hz
  • 2 x 60V 1500VA
  • Centerpotted
  • Mounting hole 8mm
  • 16kg
  • Dim. 200mm (dia.) x 100mm

 

 

 

Discontinued Product Manuals  

CoolbackII300 Manual Coolback II 300 Manual
Active Amplifier Solution
Manual content: Description, Technical Specifications, Wiring, Mechanical dimensions etc.

 

CoolbackII600 Manual CoolbackII600 Manual
Active Amplifier Solution
Manual content: Description, Technical Specifications, Wiring, Mechanical dimensions etc.

 

DCN24RPC Manual DCN24RPC
Digital Crossover Network 2 input / 4 output with power supply
Manual content: Description, Operating Conditions, Technical Specifications, Connections, Construction, Wiring, Assembly Guide etc.

 

DCN23BOX Manual DCN23BOX Manual
Digital Crossover 2 input / 3 output
Manual content: Description, Technical Specifications, Connectors, Mechanical dimensions etc.

 

DCN23kit Manual DCN23kit
Digital Crossover kit - Assembly Guide
Manual content: Description, Wiring, Mechanical dimensions etc.

 

DCN23 Manual DCN23
Digital Crossover Network 2 input / 3 output
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

DCN24 Manual DCN24
Digital Crossover Network 2 input / 4 output
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PA6CC Manual PA6CC Manual
Power Amplifier module - 600W
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PA12CC Manual PA12CC Manual
Power Amplifier module - 1500W
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PSU DCN II Manual PSU DCN II Manual
Power Supply for DCN23
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PSU4SA Manual PSU4SA Manual
Active System Power Supply
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PSU12SA Manual PSU12SA Manual
Active System Power Supply
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

AmpC trig Manual AmpC trig Manual
Soft Start and Mute Control for Power Amplifier
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

AmpC Manual AmpC Manual
Soft Start and Mute Control for Power Amplifier
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PSU4DB Manual PSU4DB Manual
Power Supply for Power Amplifier
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PSU8DB Manual PSU8DB Manual
Power Supply for Power Amplifier
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

PSU12DB Manual PSU12DB Manual
Power Supply for Power Amplifier
Manual content: Description, Operating Conditions, Technical Specifications, Connection pads, Construction, Wiring, Mechanical dimensions etc.

 

 

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