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Coolback II 600  


Coolback II 600
Active Amplifier solution * Ready-made = Plug and Play

Active Speaker Management System is intended to be a part of the back of a loudspeaker. All electronics assembled on it and acting as a heat sink for the amplifier modules. The only visible on the outside are the connectors (Balanced Input, PC Communication and Power inlet), Function Switch (ON-OFF-AUTO) and LED Indicators (ON-StandBy). The Coolback II 600 is 180mm wide and 600mm high - a thickness of 15mm - a flange of maximum 18mm for mounting.

The Coolback II 600 has substituted both the Coolback 300 series and the "old" Coolback600 series.
Here are some picutes of the new Coolback II 600:

 


 

 

 

 

 

 

Specifications:
  • DCN23 * 24bit 96kHz Digital Crossover Module
  • PA1CC * 100W (8Ω) / 150W (4Ω) Power Amplifier Module - min. load 4Ω
  • PA3CC * 200W (8Ω) / 300W (4Ω) Power Amplifier Module - min. load 3Ω
  • PA3CC * 200W (8Ω) / 300W (4Ω) Power Amplifier Module - min. load 3Ω
  • PSU8SA * System Power Supply - 8 Nichicon Gold Tune Capacitors 54.400µF/80V
  • TR600 * Silent Design Toroidal Transformer 2 x45Vac/600VA
  • Distortion : <0.08%
  • Frequency response : 5-45kHz (-3dB)
  • Signal/Noise Ratio : >108dB
  • Thermal protection above 80°Celcius
  • Weight: app. 12kg
  • Overall dimensions: 600mm (height) x 180mm (width) x 100mm (depth)

 

 

 

Suitable loudspeaker projects for our active amplifier Coolback II 600:
The listed projects is all 3-way floor standing loudspeakers of high quality, some minor changes to the box design is required

  Klang + Ton

 

Larger picture A/O - Published in issue 6/2007 + 1/2008 + 2/2008
Wilson Audio Watt/Puppy System8 inspired project developed by Holger Barske & Christian Gather
Visaton KE25SC - 25mm ceramic dome tweeter * 8Ω * 89dB * 800Hz-25kHz * 80W / 140W
ScanSpeak 18W/8545K00 - Carbon fiber/paper 18cm woofer * 8Ω * 84dB * fs=29Hz * 100W
2 x Visaton TIW200XS - Extreme long excursion 8" woofer * 8Ω * 87,5dB * fs=28Hz * 120W

 

Larger picture Duetta - Published in issue 1/2002
A very popular Klang + Ton reference loudspeaker project developed by the late Heinz Schmitt
Eton ER4 - Air Motion ribbon tweeter * 4Ω * 88dB * 2500Hz-25kHz * 60W
Eton 7-360/37HEX - 7" Hexacone mid-range * 8Ω * 89dB * 40Hz-4kHz * 100W
Eton 11-581/60HEX - 11" Hexacone woofer * 8Ω * 91dB * fs=21Hz * 150W

 

Larger picture Minuetta - Published in issue 5/2005
Cheaper version of the Duetta - smaller mid-range and bass - two choices of tweeter
Eton ER4 - Air Motion ribbon tweeter * 4Ω * 88dB * 2500Hz-25kHz * 60W or
Eton 19SD1 - 19mm silk dome tweeter * 8Ω * 89dB * 2500Hz-30kHz * 80W
Eton 5-880/25HEX - 5" Hexacone mid-range * 8Ω * 87dB * 50Hz-4kHz * 50W
Eton 8-800/37HEX - 8" Hexacone woofer * 8Ω * 89dB * fs=36Hz * 120W

 

Larger picture ExMotion 04 - Published in issue 6/2003
Loudspeaker project with dipole mid-range and closed box bass
Excel T25CF001 - 25mm fabric dome tweeter * 6Ω * 91dB * 2000Hz-25kHz * 90W
Excel W15CH001 - 15cm magnesium mid-range * 8Ω * 85dB * 50Hz-3kHz * 70W
Excel W 26 FX 001 - 26cm aluminium/magnesium woofer * 8Ω * 87dB * fs=20Hz * 150W

 

 

  Hobby HiFi

 

Larger picture Cumulus - Published in issue 5/2004
High End loudspeaker project developed by Bernd Timmermanns
Thiel/Accuton SC3 - High End Coaxial driver * 4Ω * 90/87dB * 800Hz-25kHz * xxW
Visaton AL200 - 8" aluminium woofer * 8Ω * 88dB * fs=32Hz * 120W

 

Larger picture Faktum - Published in issue 4/2007
Super loudspeaker project developed by Bernd Timmermanns
ScanSpeak R2904/700000 - Ringradiator tweeter * 8Ω * 88dB * 2500Hz-25kHz * 60W or
ScanSpeak 15M 4531 K00 - 15cm mid-range * 8Ω * 89dB * 40Hz-4kHz * 100W
ScanSpeak 22W 8851 T-00 - 22cm woofer * 8Ω * 91dB * fs=21Hz * 150W

 

Larger picture Audimax - Published in issue 3/2007
Powerful loudspeaker project developed by Bernd Timmermanns
Audaphon Neo Pro 5i - Hornloaded ribbon tweeter * 7Ω * 96dB * 650Hz-40kHz * 60W
2 x Excel W18EX001 - 18cm magnesium mid-range * 8Ω * 88dB * 40Hz-2,5kHz * 100W
2 x Visaton TIW250XS - Extreme long excursion 10" woofer * 8Ω * 89dB * fs=31Hz * 200W

 

Larger picture Mezzoforte updated - Published in issue 5/2005
Loudspeaker project developed by Bernd Timmermanns
Visaton SC10N8 - 25mm fabric dome tweeter * 8Ω * 90dB * 1000Hz-20kHz * 100W
Visaton W170S8 - 17cm mid-range * 8Ω * 86dB * fs=36Hz * 50W
Visaton W250S8 - 25cm woofer * 8Ω * 90dB * fs=31Hz * 100W

 

 

  Acoustic Design Magazine

 

Larger picture Blue Note - Published in issue Ausgabe 6
Eton driver loudspeaker project developed by Udo Wohlgemuth
Eton ER4 - Air Motion ribbon tweeter * 4Ω * 88dB * 2500Hz-25kHz * 60W
Eton 5-880/25HEX - 5" Hexacone mid-range * 8Ω * 87dB * 50Hz-4kHz * 50W
Eton 8-472/32HEX - 8" Hexacone woofer * 8Ω * 88dB * fs=24Hz * 90W

 

 

  Dansk Audio Teknik - Danish Shop in Copenhagen

 

Larger picture Amadeus TNT S7
ScanSpeak driver loudspeaker project
R2904/7000 00 - Ringradiator tweeter * 8Ω * 88dB * 2500Hz-25kHz * 60W
ScanSpeak 12M/4631G00 - 12cm sliced paper cone * 8Ω * 87dB * 50Hz-4kHz * 50W
2 x ScanSpeak 18W/8531G00 - 18cm sliced paper cone * 8Ω * 89dB * 40Hz-4kHz * 100W

 

Larger picture Amadeus TNT S9
ScanSpeak driver loudspeaker project
R2904/700000 - Ringradiator tweeter * 8Ω * 88dB * 2500Hz-25kHz * 60W
ScanSpeak 18W/8531G00 - 15cm sliced paper cone * 8Ω * 89dB * 40Hz-4kHz * 100W
2 x ScanSpeak 22W/8857T00 - 22cm aluminium cone woofer * 8Ω * 86dB * fs=23Hz * 170W

 

 

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Coolback II 600  

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