The controller section consist of several stages. On the input stage the SDP circuit and on the output stage the SIS circuit ensure easy, reliable and optimised speaker response.

SDP Speaker Drive Processor™

The SDP circuit can be seen as the “brain” of the amplifier. By means of speaker-specific modules, that are located in 2 front-accessible slots, the characteristics of the connected speaker are loaded into the amplifier. With this, the amplifier is “tailor-made” to the speaker, regardless of the power output specifications of the amplifier. This can be done with either the analogue SDP modules, or the DDP digital drive processor™.
Multiple processing functions are operating at the same time:

• Protection: The speaker is protected against damage from over-excursion and power overload.
• Dedicated filtering: The fixed cross-over settings cater for the best system performance.
• Optimised power response: The SDP module adjusts the RMS and peak values to the speakers capacity, giving maximum system power output.
• System equalising: This circuit equalises the system response, with utilising the maximum component efficiency. This results in higher overall system sensitivity and reduces the need for active filtering while offering efficient amplifier usage (passive system).

The DDP™ also offers level control, mute and a user-controllable 4-band parametric equaliser and (up to) 340ms delay.

By placing the modules in the slots, the SDP circuit is automatically activated, without the need for changing switches/jumpers (“plug&play”). Taking out the modules, bypasses the SDP circuit and converts the ALC into a “standard” stereo power ampli- fier, for use with traditional speaker systems.

SIS Signal Integrity Sensing™

The SIS circuit extends the control-loop of the amplifier to the input terminals of the speaker, by means of two additional (sense) wires, compensating for the influence of speaker cables.
SIS offers cable-length independent damping, resulting in a virtually infinite damping under all conditions (up to an almost immeasurable value of over 10.000).

Furthermore SIS maintains signal level by detecting the amount of signal loss at the end of the cable. As a result of pre-compensation of the self-induction of the cable, non-linear harmonic + intermodulation distortion are reduced substantially by SIS, while offering a more linear frequency response (reduced linear distortion).

SIS offers a significantly tighter and more accurate low and mid response. Without connection of the 2 extra sense wires, the ALC units can also be used as any normal amplifier in combination with non- SIS speaker systems.

ATCM Advanced Thermal and Clip Management™

ATCM has a number of sensors within the ampli- fier, that constantly monitor both operating temperature, in and output signal. For the temperature section of ATCM, the input signal stage is regulated when dangerous temperature increase is sensed; In this way, the amplifier stays in operation, instead of switching into “heat protection”.

The clip limiter section reduces the signal input level to the safest maximum level, when continuous clipping is detected. In this way the high frequency drivers are protected against damage from harmonics and also the amplifier remains cooler. The limiter has a “Soft-knee clipping characteristic” for inaudible, but safe operation.

ATCM offers ease-of-operation and guarantees operation under all conditions.

data port

The Data port located on the back of the unit, is the connection for ALC remote-control function.
Through the 15-pin D-connection to remote processor, function includes indication of operating status; Temperature per channel, bridge/parallel mode, AC power level, output power read-out, impedance check for speaker damage, clip/protect indication, level control, etc.

For cinema application, the Data-port is completely compatible with existing D-pin connected cinema monitors. In that application, the signal in/out connection also caters for reduced set-up and installation time and standardised in/output levels.

operation

The ALC 2 amplifier has in addition a number of user-friendly features, that make the ALC the ideal Alcons speaker companion.
All relevant switches (bridge and parallel input) are conveniently located on the front behind the cover. When switching to bridge-mode, there is no need for using different SDP modules. Furthermore, in bridge-mode, the amp is controlled by only one channel.

The parallel-mode input switch: With this switch, the input of channel 1 is also send to input channel 2. Therefore there is no need for external “loop wires” from link output 1 into input 2.

The ALC features PowerCon™ AC power connection, for quick and efficient exchange of rack mounted ALC’s.

The ALC2-ST is the “stealth” version of the ALC2. It has potentiometers that are located behind the front lid, preventing unwanted changing of gainsettings.

The post ALC2 appeared first on Alcons Audio.

The controller section consist of several stages; On the input stage the SDP circuit and on the output stage the SIS circuit ensure easy, reliable and optimised speaker response.

SDP Speaker Drive Processor™

The SDP circuit can be seen as the “brain” of the amplifier. By means of speaker-specific modules, that are located in 2 front-accessible slots, the characteristics of the connected speaker are loaded into the amplifier. With this, the amplifier is “tailor-made” to the speaker, regardless of the power output specifications of the amplifier. This can be done with either the analogue SDP modules, or the DDP digital drive processor™.

Multiple processing functions are operating at the same time:

• Protection: The speaker is protected against damage from over-excursion and power overload.
• Dedicated filtering: The fixed cross-over settings cater for the best system performance.
• Optimised power response: The SDP module adjusts the RMS and peak values to the speakers capacity, giving maximum system power output.
• System equalising: This circuit equalises the system response, with utilising the maximum component efficiency. This results in higher overall system sensitivity and reduces the need for active filtering while offering efficient amplifier usage (passive system).

The DDP™ also offers level control, mute and a user-controllable 4-band parametric equaliser and (up to) 340ms delay.

By placing the modules in the slots, the SDP circuit is automatically activated, without the need for changing switches/jumpers (“plug&play”). Taking out the modules, bypasses the SDP circuit and converts the ALC into a “standard” stereo power ampli- fier, for use with traditional speaker systems.

SIS Signal Integrity Sensing™

The SIS circuit extends the control-loop of the amplifier to the input terminals of the speaker, by means of two additional (sense) wires, compensating for the influence of speaker cables.
SIS offers cable-length independent damping, resulting in a virtually infinite damping under all conditions (up to an almost immeasurable value of over 10.000).

Furthermore SIS maintains signal level by detecting the amount of signal loss at the end of the cable. As a result of pre-compensation of the self-induction of the cable, non-linear harmonic + intermodulation distortion are reduced substantially by SIS, while offering a more linear frequency response (reduced linear distortion).

SIS offers a significantly tighter and more accurate low and mid response. Without connection of the 2 extra sense wires, the ALC units can also be used as any normal amplifier in combination with non- SIS speaker systems.

ATCM Advanced Thermal and Clip Management™

ATCM has a number of sensors within the ampli- fier, that constantly monitor both operating temperature, in and output signal. For the temperature section of ATCM, the input signal stage is regulated when dangerous temperature increase is sensed; In this way, the amplifier stays in operation, instead of switching into “heat protection”.

The clip limiter section reduces the signal input level to the safest maximum level, when continuous clipping is detected. In this way the high frequency drivers are protected against damage from harmonics and also the amplifier remains cooler. The limiter has a “Soft-knee clipping characteristic” for inaudible, but safe operation.

ATCM offers ease-of-operation and guarantees operation under all conditions.

data port

The Data port located on the back of the unit, is the connection for ALC remote-control function.
Through the 15-pin D-connection to remote processor, function includes indication of operating status; Temperature per channel, bridge/parallel mode, AC power level, output power read-out, impedance check for speaker damage, clip/protect indication, level control, etc.

Through the 15-pin D-connection to remote processor, function includes indication of operating status; Temperature per channel, bridge/parallel mode, AC power level, output power read-out, impedance check for speaker damage, clip/protect indication, level control, etc.

For cinema application, the Data-port is completely compatible with existing D-pin connected cinema monitors. In that application, the signal in/out connection also caters for reduced set-up and installation time and standardised in/output levels.

operation

The ALC4 amplifier has in addition a number of user-friendly features, that make the ALC the ideal Alcons speaker companion.
All relevant switches (bridge and parallel input) are conveniently located on the front behind the cover. When switching to bridge-mode, there is no need for using different SDP modules. Furthermore, in bridge-mode, the amp is controlled by only one channel.

The parallel-mode input switch: With this switch, the input of channel 1 is also send to input channel 2. Therefore there is no need for external “loop wires” (Y-cables) from link output 1 into input 2.

The ALC features PowerCon™ AC power connection, for quick and efficient exchange of rack mounted ALC’s.

The ALC4-ST is the “stealth” version of the ALC4. It has potentiometers that are located behind the front lid, preventing unwanted changing of gainsettings.

The post ALC4 appeared first on Alcons Audio.

The controller section consist of several stages; On the input stage the SDP circuit and on the output stage the SIS circuit ensure easy, reliable and optimised speaker response.

SDP Speaker Drive Processor™

The SDP circuit can be seen as the “brain” of the amplifier. By means of speaker-specific modules, that are located in 2 front-accessible slots, the characteristics of the connected speaker are loaded into the amplifier. With this, the amplifier is “tailor-made” to the speaker, regardless of the power output specifications of the amplifier. This can be done with either the analogue SDP modules, or the DDP digital drive processor™.

Multiple processing functions are operating at the same time;

• protection: The speaker is protected against damage from over-excursion and power overload.
• dedicated filtering: The fixed cross-over settings cater for the best system performance.
• optimised power response: The SDP module adjusts the RMS and peak values to the speakers capacity, giving maximum system power output.
• system equalising: This circuit equalises the system response, with utilising the maximum component efficiency. This results in higher overall system sensitivity and reduces the need for active filtering while offering efficient amplifier usage (passive system).

The DDP™ also offers level control, mute and a user-controllable 4-band parametric equaliser and (up to) 340ms delay.
By placing the modules in the slots, the SDP circuit is automatically activated, without the need for changing switches/jumpers (“plug&play”). Taking out the modules, bypasses the SDP circuit and converts the ALC into a “standard” stereo power ampli- fier, for use with traditional speaker systems.

SIS Signal Integrity Sensing™

The SIS circuit extends the control-loop of the amplifier to the input terminals of the speaker, by means of two additional (sense) wires, compensating for the influence of speaker cables.
SIS offers cable-length independent damping, resulting in a virtually infinite damping under all conditions (up to an almost immeasurable value of over 10.000).

Furthermore SIS maintains signal level by detecting the amount of signal loss at the end of the cable. As a result of pre-compensation of the self-induction of the cable, non-linear harmonic + intermodulation distortion are reduced substantially by SIS, while offering a more linear frequency response (reduced linear distortion).

SIS offers a significantly tighter and more accurate low and mid response. Without connection of the 2 extra sense wires, the ALC units can also be used as any normal amplifier in combination with non- SIS speaker systems.

ATCM Advanced Thermal and Clip Management™

ATCM has a number of sensors within the ampli- fier, that constantly monitor both operating temperature, in and output signal. For the temperature section of ATCM, the input signal stage is regulated when dangerous temperature increase is sensed; In this way, the amplifier stays in operation, instead of switching into “heat protection”.

The clip limiter section reduces the signal input level to the safest maximum level, when continuous clipping is detected. In this way the high frequency drivers are protected against damage from harmonics and also the amplifier remains cooler. The clip limiter reduces overdrive peaks, allowing a higher average output level without audible distortion.

ATCM offers ease-of-operation and guarantees operation under all conditions.

data port

The Data port located on the back of the unit, is the connection for ALC remote-control function.
Through the 15-pin D-connection to remote processor, function includes indication of operating status; Temperature per channel, bridge/parallel mode, AC power level, output power read-out, impedance check for speaker damage, clip/protect indication, level control, etc.

For cinema application, the Data-port is completely compatible with existing D-pin connected cinema monitors. In that application, the signal in/out connection also caters for reduced set-up and installation time and standardised in/output levels.

operation

The ALC6 amplifier has in addition a number of user-friendly features, that make the ALC the ideal Alcons speaker companion;
All relevant switches (bridge and parallel input) are conveniently located on the front behind the cover.

When switching to bridge-mode, there is no need for using different SDP modules. Furthermore, in bridge-mode, the amp is controlled by only one channel.

The parallel-mode input switch; With this switch, the input of channel 1 is also send to input channel 2. Therefore there is no need for external “loop wires” (Y-cables) from link output 1 into input 2.

The ALC features PowerCon™ AC power connection, for quick and efficient exchange of rack mounted ALC’s.

The ALC6 is also available in “stealth” version; The ALC6st has potentiometers that are located behind the front lid, preventing unwanted changing of gain-settings.

The post ALC6 appeared first on Alcons Audio.

Emphasizing Alcons’ “system synergy” philosophy, the DDP module with powerful 56 bit, 120 Mips DSP engine has been designed to offer intuitive control and utmost reliability while preserving the sonic excellence of Alcons’ pro-ribbon based sound systems.

The SDP™ circuit of the ALC can be seen as the “brain” of the amplifier; Activating the DDP converts the ALC from a “standard” stereo power-amp into a dedicated amplified loudspeaker controller. The analog (single channel) SDP modules or the digital (dual channel) DDP module can be placed into the SDP slots, located in the front of the ALC.

features

The Digital Drive Processor features three individual processing functions, all operating at the same time. The sections consist of fixed, factory-set functions and variable, user-definable functions, with channel-dependent control.

The control of the DDP is done by a single “click & rotate” encoder with ergonomic, logical operation.

1) Input section:
This section features channel-dependent gain control and mute function.
It also provides a signal routing matrix for configuring signal distribution over the 2 channels (input selection: input 1 or input 2 individual; input 1 > input 2; input 2 > input 1; input 1 > inputs 1+2; input 2 > inputs 1+2, inputs 1+2 > input 1, inputs 1+2 > input 2).

2) System Drive section:
This section provides system controlling and optimizing, with presets for all available Alcons systems and system configurations. Simply select the correct speaker and speaker configuration and all parameters are set to give the best sonic performance; Protection, dedicated filtering, optimised system response.

The Intelligent Driver Guidance IDG™ processing offers optimized power response through “True-RMS” intelligent power limiting guidance and (separate) excursion limiting guidance.

Crossover filtering is done with “Von Helsing’s Filterslope Architecture”; This filter design protocol consists of dedicated, hybrid Bessel, Butterworth or Linkwitz Riley responses.

The optimization of the system’s response is taken care of by factory-set dedicated driver alignment and system configuration equalising a.o.

3) User control section:
This sections offers user definable equalising and delay functions.

The equalising can be done through 4-bands of parametric equalising per channel; Each band provides +12dB to – 19dB gain with a choice of 83 selectable frequencies. Each band can also act as notch-filter. The filters feature CSQ™ (Constant & Symmetrical Q), with a selectable Q from 0.3 to 15, in 36 steps.

Per channel there’s also a user-definable delay function; The delay can be set from 1 to 294ms. for a total of 99.9m/ 328ft. delay

Up to 99 user-presets can be made, consisting of factory system preset, gain, input-mode, equalising and delay, or a selection of each of these functions. The presets can be tagged with a 21-character name.

Apart from the three processing sections, another important feature is the LimitLog™. In combination with the internal crystal-controlled daytime clock, this function provides real-time signal logging; A visual tracing report on the signal present and dB limiting of the selected system, over the elapsed period of time.

With up to 420.000 minute samples, a usage history of more than 7.000 operating hours can be read out.

Furthermore, the DDP is fitted with a wide-angle view backlit LCD; The large display of 128×64 dots, enables a complete processor status report with just a single view.
The display can be configured for 10-seconds Time-out, or 9-level Dimmer-mode; The display also features a 9-step contrast control.

Firmware updates are performed via the side-located USBport; Dedicated boot-loader software makes the firmware updates internet-downloadable.

The post DDP appeared first on Alcons Audio.