ACMT - Applied Computer Music Technologies Ltd

ACM500XB Product Operating Guide
 
Access to plug-in parameters is provided by a fully resizable graphical user interface. Your host application may also provide access to parameter adjustments and additional configuration. Graphical User Interface
 
The plug-in settings are adjusted by clicking and dragging on the rotary controls or buttons. Some controls may have detents – these manifest themselves as areas in the rotation where the reluctance to move is increased such that you have to drag them a bit harder. They are intended to behave similarly to real controls which may have a 'click stop' at 0dB for example.
 
You can also adjust the controls by placing the mouse pointer over them and using the scroll wheel. In this case the detent has no effect.
 
Control Modes
 
The control mode determines the way in which the rotary controls respond to mouse movement. This can normally be configured via the host application preferences. Please refer to your host application documentation for details.

• Circular. In this mode, clicking on a control will move it immediately to the mouse pointer’s angular position. To adjust the control, drag the mouse pointer in a circle or an arc.
• Relative Circular (Default). This is the default mode unless changed by host application settings. Similar to circular mode, however moving the mouse will adjust the control relative to its current setting.
• Linear. In this mode, the control responds to vertical mouse movement. Drag up to increase the value, turning the control clockwise, or down to decrease the value, turning the control anticlockwise.

In all modes, double clicking the centre of a control will return it to its default position.
 

Control Functions
 
1. HF Bell
 
With the HF 'Bell' switch selected, the HF section operates as a fixed bandwidth peak or bell-curve filter affecting a range of frequencies centred at a point determined by the HF kHz setting. With the switch deselected, the HF section operates as a shelving filter, in which all frequencies above a point determined by the HF kHz control are affected by the HF dB setting.
 
2. HF dB
 
The HF dB control sets the amount of boost or cut applied above the corner frequency (shelf mode) or at the centre frequency ('bell' mode) determined by the HF kHz setting. The range is nominally +/- 15dB. Turning the control clockwise or anticlockwise, increases or decreases the gain.
 
3. HF kHz
 
The HF kHz control sets the point above which the high frequency boost or cut occurs (shelf mode) or the centre frequency ('bell' mode). Turning the control clockwise or anticlockwise, increases or decreases the frequency. The HF filter is adjustable from 1.5kHz to 16kHz.
 
4. HMF dB
 
The HMF dB or high-mid gain control sets the amount of boost or cut applied at a centre frequency determined by the HMF kHz setting. Turning the control clockwise or anticlockwise increases or decreases the gain. The control covers a range of +/- 15dB, rising to +/- 18dB depending upon the HMF Q control setting.
 
5. HMF kHz
 
The HMF kHz control sets the centre (peak) frequency at which the high-mid boost or cut occurs. Turning the control clockwise or anticlockwise increases or decreases the frequency. The HMF filter is adjustable from 0.6kHz (600Hz) to 7kHz.
 
6. HMF Q
 
The HMF Q control affects the high-mid filter bandwidth. Turning the control anticlockwise increases the Q, providing a sharper and more selective filter, while turning the control clockwise provides a broader setting, allowing the filter to affect a larger set of frequencies.
 
7. EQ In / Out
 
This is the plug-in bypass switch. With the switch on, the plug-in will be in the signal path. With the switch off, signals pass through unaffected.
 
8. LMF dB
 
As with the high-mid or HMF dB control, the LMF dB or low-mid gain selects the amount of boost or cut, this time applied to the low-mid range, at a centre frequency selected by the LMF kHz setting. Turning the control clockwise or anticlockwise increases or decreases the gain. The control covers a range of +/- 15dB, rising to +/- 18dB depending upon the LMF Q control setting.
 
9. LMF kHz
 
The LMF kHz control sets the centre (peak) frequency at which the low-mid boost or cut occurs. Turning the control clockwise or anticlockwise increases or decreases the frequency. The LMF filter is adjustable from 0.2kHz (200Hz) to 2.5kHz.
 
10. LMF Q
 
As with the high-mid or HMF Q control, the LMF Q affects the filter bandwidth. Turning the control anticlockwise increases the Q, providing a sharper and more selective filter while turning the control clockwise provides a broader setting, allowing the filter to affect a larger set of frequencies.
 
11. LF Hz
 
The LF Hz control sets the point below which the low frequency boost or cut occurs (shelf mode) or the centre frequency ('Bell' mode). Turning the control clockwise or anticlockwise increases or decreases the frequency. The LF filter is adjustable from 30Hz to 450Hz.
 
12. LF dB
 
The LF dB control sets the amount of boost or cut applied below the corner frequency (shelf mode) or at the centre frequency ('Bell' mode) selected by the LF Hz setting. The control range is nominally +/- 15dB. Turning the control clockwise or anticlockwise increases or decreases the gain.
 
13. LF Bell
 
As with the HF filter, with the LF 'Bell' switch selected, the LF section operates as a fixed bandwidth peak or bell-curve filter affecting a range of frequencies centred at a point determined by the LF Hz setting. With the switch deselected, the LF section operates as a shelving filter, in which all frequencies below a point set by the LF Hz control are affected by the LF dB setting.

ACM500XB Technical Specification:
 
Product Specifications

• Windows & Linux VST, VST3, and CLAP compatible.
• Mono or stereo operation.
• Interpolated controls for smooth parameter changes with no 'zipper' noise.
• -18dBFS reference level for 0dBu.
• High frequency section
  • HF Gain (HF Bell On): +/- 18dB.
  • HF Freq: 1.5kHz - 16kHz.
  • HF Q (HF Bell On): 0.6
• High-mid frequency section
  • HMF Gain: +/- 18dB.
  • HMF Freq: 600Hz - 7kHz.
  • HMF Q: Variable 0.5 - 2.5
• Low-mid frequency section
  • LMF Gain: +/- 18dB.
  • LMF Freq: 200Hz - 2.5kHz.
  • LMF Q: Variable 0.5 - 2.5
• Low frequency section
  • LF Gain (LF Bell On): +/- 18dB.
  • LF Freq: 30Hz - 450Hz.
  • LF Q (LF Bell On): 0.6
• Polarity invert switch.
• Output level trim (+/-6dB).

Please note: In the interest of continual product improvement, specifications may be subject to change without notice.

ACM500XB Download Free Demo
 
1. System Requirements - Windows

• 64bit Windows 7 or newer.
• A VST, VST3 or CLAP compatible host application.

2. System Requirements - Linux

• Linux x86-64/AMD64 64bit e.g. Ubuntu 20.04 LTS or newer.
• A Linux VST, VST3 or CLAP compatible host application.

3. Free Demo Limitations

• Every 60 seconds the plug-in will fade to silence momentarily. To remove this limitation you will need to have purchased a product activation code.
• To remove the demo limitations, open the plug-in in your host application and click the lock button at the top left of the plug-in GUI to open the license entry dialogue. Type (or paste) your product activation code into the text box. You will then need to restart your host application to complete the process.

4. Product Support

• All downloads include their own installer, manual and installation instructions.
• If you need help downloading or installing the software please use our contact form to let us know.