Quad Voltage Controlled Amplifier: Difference between revisions
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[[Image:Quad-VCA-3.jpg|400px||Quad VCA]] | |||
The Quad VCA is designed as a utility module for providing '''four' | The Quad VCA is designed as a utility module for providing '''four''' basic VCA's to be grabbed for a patch. | ||
Each of the four identical VCA's include: | Each of the four identical VCA's include: | ||
'''Channel input:''' The VCA's are DC coupled to allow for signal processing of CV or audio signals. | '''Audio/CV In Channel input:''' The VCA's are DC coupled to allow for signal processing of CV or audio signals. | ||
'''CV input:''' The amplifier stage responds to a 0 to 5V control voltage. | '''Control in CV input:''' The amplifier stage responds to a 0 to 5V control voltage. | ||
5V for full output. 0V for fully attenuated. | 5V for full output. 0V for fully attenuated. | ||
All of the CV inputs are cascaded. | All of the CV inputs are cascaded. | ||
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'''Level control:''' Allows for adjusting the gain stage of the channel from 0 to unity gain. On-board trimmer potentiometers allows for the user to adjust the maximum output gain for each channel up to just below the power supply limits providing up to a 2.5 gain amplification of the input signal. | '''Level control:''' Allows for adjusting the gain stage of the channel from 0 to unity gain. On-board trimmer potentiometers allows for the user to adjust the maximum output gain for each channel up to just below the power supply limits providing up to a 2.5 gain amplification of the input signal. | ||
Or, there's a trimmer for setting the cascade voltage for when there is no CV plugged into the CV input jack. This can be adjusted for setting a "normalized" amplified gain while an external CV will interrupt that and provide a 1:1 setting. It depends on the intentions of the owner. You can adjust them for your specific applications. | |||
'''Channel output:''' Output jack for the channel. | '''Channel output:''' Output jack for the channel. | ||
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== Availability == | == Availability == | ||
This module | This module is available | ||
'''$ | '''$250.00''' | ||
[[Quad Voltage Controlled Amplifier Board |Assembled/ tested board only:]] | [[Quad Voltage Controlled Amplifier Board |Assembled/ tested board only:]] | ||
'''$ | '''$110.00''' | ||
== Info == | == Info == | ||
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'''Current draw:''' | '''Current draw:''' | ||
V+= | V+= 35 mA | ||
V-= | V-= 35 mA | ||
'''PCB board dimensions:''' | '''PCB board dimensions:''' | ||
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Mounting hole spacing; Length: C-C= 2.925" 74.3mm, Width: C-C= 2.425" 61.6mm | Mounting hole spacing; Length: C-C= 2.925" 74.3mm, Width: C-C= 2.425" 61.6mm | ||
Latest revision as of 11:48, 20 March 2016
The Quad VCA is designed as a utility module for providing four basic VCA's to be grabbed for a patch.
Each of the four identical VCA's include:
Audio/CV In Channel input: The VCA's are DC coupled to allow for signal processing of CV or audio signals.
Control in CV input: The amplifier stage responds to a 0 to 5V control voltage.
5V for full output. 0V for fully attenuated.
All of the CV inputs are cascaded.
The CV applied to channel 1 will control all four VCA's. Inserting a CV into another CV input will interrupt the cascade and apply the new CV to the selected and subsequent channels.
Level control: Allows for adjusting the gain stage of the channel from 0 to unity gain. On-board trimmer potentiometers allows for the user to adjust the maximum output gain for each channel up to just below the power supply limits providing up to a 2.5 gain amplification of the input signal.
Or, there's a trimmer for setting the cascade voltage for when there is no CV plugged into the CV input jack. This can be adjusted for setting a "normalized" amplified gain while an external CV will interrupt that and provide a 1:1 setting. It depends on the intentions of the owner. You can adjust them for your specific applications.
Channel output: Output jack for the channel.
Availability
This module is available $250.00
Assembled/ tested board only:
$110.00
Info
Current draw:
V+= 35 mA
V-= 35 mA
PCB board dimensions:
3.125" (3-1/8") 79.38mm X 2.625" (2-5/8") 66.68mm
Mounting holes: 0.125" (1/8") 3.18mm (for 4-40 screw) 4 holes, one in each corner
Mounting hole spacing; Length: C-C= 2.925" 74.3mm, Width: C-C= 2.425" 61.6mm
