CT-M600 600W Monaural Amplifier

Information

Classé Custom Theater series components offer a beautiful and purpose-built solution for installing world-class audio components in professional equipment racks. Our commitment to building the world’s best amplifiers has not changed, but the way our customers use them has. High-end amplifiers today are as likely as not to be installed in equipment racks or custom cabinetry and often serve as the foundation of a home theater. Their sheer size, weight and heat render them impractical in many installations.

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The revolutionary Custom Theater (CT) series is our response to this reality. They are the first world class high-end amplifiers specifically tailored to modern custom installations. They deliver ultra high-end performance, exceptional reliability and are designed to be easily installed. We say that they are rack advantaged, because of a variety of features tailored to the demanding requirements of this environment.

CT amplifiers come with their own adjustable rack rails and a separate faceplate designed to conceal all mounting hardware along the sides of the rack. The rails adapt easily to common rack depths while providing front to back support of the chassis. Hidden inside, our unique Intelligent Cooling Tunnel, or ICTunnel™ (pronounced Icy Tunnel) architecture and related circuitry quietly controls the amplifier temperature, ensuring optimum performance and reliability in enclosed, poorly ventilated environments.

Conventional high-end amplifiers use heatsinks with high thermal mass that rely on convection to cool the active circuits. They are slow to heat up and slow to cool down. Eventually they heat up their environment and as the air around them gets hotter, they become part of the problem. For this reason, high-powered amps and racks or cabinets don’t easily mix.

Conventional heatsinks are simply shaped pieces of metal, relying on placement and ambient air to extract heat from the amplifier. The ICTunnel™ is more sophisticated, acting like the human hypothalamus regulating body temperature. The ICTunnel™ utilizes an aluminum bonded-fin heatsink, of the kind used in high powered medical, laser and test equipment. It exploits the principle of low thermal mass, so it heats quickly but can also be cooled quickly. Inside its relatively small size are fins providing nearly 31 square feet of surface area. The key to its operation is how the fins are spaced—as close as possible to each other to maximize the surface area inside the tunnel, but not so close as to heat each other. The ICTunnel™ utilizes a noiseless fan along with pressure and temperature sensors to maintain the amplifier’s target temperature.

The CT series has everything you would expect from the world’s best amplifiers. They are designed for lifetime reliability. They have the power to effortlessly control the lowest impedances imaginable. They have the finesse to resolve the infinitely minute details that are the DNA of great sound. But CT amplifiers add a new dimension. For the first time the world’s best amplifiers can go right where you need them – in the home theater rack.

Specifications

Details

All tests un-weighted and 500kHz measurement bandwidth (except SNR).

Frequency response

 

1Hz – 80kHz, -3dB

Output power

 

600W rms into 8Ω (27.8 dBW)
1200W rms into 4Ω (27.8 dBW)

Harmonic Distortion

 

<0.002% at 1 kHz balanced
<0.004% at 1 kHz single ended

Peak Output Voltage

 

226V peak to peak, 80V rms no load
206V peak to peak, 73V rms into 8Ω

Input Impedance

 

50kΩ balanced / single ended

Voltage gain

 

29dB balanced / single ended

Input level at clipping

 

2.86V rms balanced / single ended

Intermodulation
Distortion

 

>100dB below fundamental into
8Ω balanced / single ended

>90dB below fundamental into
4Ω balanced / single ended

Signal to Noise Ratio

 

-120dB at peak output into 8Ω
Measurement Bandwidth: 22kHz

Output impedance

 

0.03Ω @ 1kHz

Standby power
consumption

 

3W @ 120V; 4W @ 230V

Rated power
consumption

 

823W @ 1/8th power into 8Ω

Width

 

19” (483mm) (including faceplate)

Width

 

17” (432mm) (excluding faceplate)

Depth

 

18.625” (473mm) (excluding connectors)

Height

 

6.97” (177mm)

Gross weight

 

109lbs (49.5kg)

Net weight

 

89lbs (40.5kg)

Mains voltage

 

Specified on rear panel

 

Product Info Sheet

CT-M600 - Product Info Sheet - English | Français

Firmware

  • Current Version: V1.09

    Last Updated:
      • 27 April 2012 (Front Panel Software)
      • 2 April 2010 (Heatsink Software)
How to Check and Update Firmware

How to check the current Firmware of your Delta II Series Amplifier

  • The first option is through CAN-Bus. In that case, the amplifier must be connected to another Classé unit that has a TFT Touch Screen (like the SSP-800 or Sigma SSP). Press MENU > STATUS > MORE to view a list of CAN-Bus devices in the system. Select the amplifier and press SELECT > STATUS to view the current version. If the amplifier does not show up on the CAN-Bus list it should be updated.

  • The current Firmware can also be checked through a Classé Diagnostic Utility called Delta_CT_User_Interface_Installer.  As it name states, it allows you to access a Delta II amplifier (like this model) through a PC-based interface.  Please note that the Utility is only available for PC, due to limitations imposed by the Communications module.

Is a Firmware Update important?

Yes, a Delta II Amplifier Firmware Update solve issues that are found "in the field". Improvements can range from increasing the span of time between filter cleaning warnings, to important adjustments in soft start timings and shut down timings.

How to update Delta II Series Amplifier Firmware

This Firmware update must be transferred from a local Windows PC to the unit using the “Classé Amploader 3.5” utility. The Classé Amploader 3.5 utility is a small standalone application that can run from your computer's Desktop or your Program Files folder. It is included in the ZIP archive.

In most cases there are TWO software components to update: The so-called "Front Panel" (which holds the operating software to the unit) as well as the "Heat Sink" (which deals with equal temperature, and other Heat Sink considerations),  

Both must be updated. Make sure to update the Front Panel Software FIRST, prior to updating the Heatsink Software.


Owner's Manual

Your Owner's Manual has a detailed section on Installation and Set-up.  In addition to this information we would like to point out the following topics that have come up over the years

 

The use of a Power Conditioner or Regulator

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Home Automation

All Delta II amplifiers can be controlled via CAN-Bus, DC Trigger (in-out), IR in-out and via RS232.  The latter is available via a DB-9 connector on the rear panel.

IR Remote Control Codes

All Delta II Amplifiers can be controlled using RS232, a protocol used by Home Automation Systems like Crestron, Control 4, etc. Delta II Amplifiers are equipped with a DB-9 connector.

Voltage

  • The Sigma 2000i can operate on AC Voltages between 110V - 240V.  
  • Make sure to change the AC Fuse (rear) to match the AC Voltage of your country. 

When you change the fuse to accomodate a different AC Voltage, please contact Classé to obtain a new sticker for the back of your unit that indicates the newOperating Voltage. Without this, another user/customer might make a mistake in the AC Voltage and Fuse Value.

Fuse

  • The Sigma 2200i has one fuse accessible via the rear panel;
  • Make sure that the AC Fuse corresponds to the AC Voltage offered;

Fuse Specifications

  • For 100-120 Volts

Fuse Value: T6.3AH 250V 
Description: IEC time lag, high breaking capacity, 6.3A 250V

Classé Part No. 51764877-00 0
Schurter Part No. 0001.2512
Littlefuse Part No. 21506.3

 

  • For 220-230-240 Volts

Fuse Value: T3.15AH 250V
Description: IEC time lag, high breaking capacity, 3.15A 250V)

Classé Part No. 51764794-00
Schurter Part No. 0001.2509
Littlefuse Part No. 2153.15

Drawings 2D/3D

Brochure

Info Sheet