NT$ 5,450
Home » Modular Synthesizer » Mixer » Doepfer [已停售] A-135-3 Voltage Controlled Stereo Mixer
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A-135-3 is a is a voltage controlled stereo mixer with four inputs. Behind a front panel with 8 HP only eight linear VCAs (voltage controlled amplifiers) and the mixer based on the VCAs are available.
Controls, Inputs and Functions of each input:
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Level (manual control of the VCA amplification), small rubberized knob (L1...L4)
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Control voltage input with associated attenuator (CV 1...4), for the full VCA control range about 0...+5V control voltage are required (attenuator fully clockwise), for higher control voltages the attenuator is used, the attenuators are without knobs, just plastic shafts with white marker
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Signal Input left/right (InL 1...4 / InR 1...4)
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The signal inputs are not equipped with an attenuator. But the VCAs can process all signals up to 15Vpp / -7.5...+7.5V without clipping. In case of higher levels an external attenuator is required (e.g. A-183-1).
The sum of the left and right signals appear at the sockets Out L and Out R. The maximal amplification is about 0.5 to avoid clipping at the mixer outputs (otherwise the outputs may distort with 15Vpp signals at each signal input and full amplifications). If another maximal amplification (e.g. 1) is required two resistors have to be replaced.
All inputs and outputs are DC coupled. Consequently the module can be used to process both audio and control voltages.
Additional technical specification for each VCA (based on the specifications of the VCA circuits CEM3360/AS3360 used in the module):
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Crosstalk between two channels: better than - 80dB
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Signal attenuation at 0V CV: better than -80dB
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Total harmonic distortion: typ. 1%
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Control voltage feedthrough: max. 15mV
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Width: 8 TE / 8 HP / 40.3 mm
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Depth: 45 mm ( measured from the rear side of the front panel)
Current: +40mA (+12V) / -40mA (-12V)
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Q1. What is the inspection period?
According to the Consumer Protection Act, online purchases come with a 7-day inspection period starting from the delivery date. Please note that the "inspection period is not a trial period." The purpose is for you to inspect and review the product, not to use it. If you are unsatisfied after inspection, please do not open or use the product and follow the return procedures immediately. Returned products must be in complete packaging with all accessories, gifts, and original packaging intact. Any missing, damaged, or incomplete items may affect your return rights and restoration costs may be deducted.
Q2. How do I process a return or exchange?
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Please contact us by phone or email within the inspection period, providing the reason for the return/exchange, current product condition, phone number, and pickup address. We will arrange the return within 3-5 business days.
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Bank Transfer: Please contact service [at] digilog.tw with your complete bank details (bank name, branch name, bank code, account holder name, account number). We will arrange courier pickup of the returned product and transfer the refund to your designated account within 5-7 business days.
Q4. Do I need to pay for shipping when sending products for repair?
Round-trip shipping costs for product repairs are the customer's responsibility.
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