XAOC 1980 Sopot Mixers User Manual

: June 14, 2024
: Xaoc

Table of Contents

XAOC 1980 Sopot Mixers
Product Information
INSTALLATION
MODULE OVERVIEW
OPERATION
Front Panel Overview
ACCESSORY
WARRANTY
MAIN FEATURES
TECHNICAL DETAILS
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

XAOC 1980 Sopot Mixers

XAOC-1980-Sopot-Mixers-PRODUCT

Product Information

Specifications
- Product Name: Sopot Triple Signal Summator
- Model: 1980
- Module Type: Triple summing mixer
- Number of Sections: 3 (A, B, C)
- Input Channels per Section: 4
- Output Channels per Section: 1
- Attenuation Options: Unity gain (1:1), -12dB (1:4)
- Signal Level Indicator: Yes
- Clipping Circuit: Soft clipping circuit
- Power Requirement: Eurorack, 6hp
Module Overview
- Sopot is a triple-summing mixer module designed by Xaoc Devices.
- It features three independent summing sections labelled A, B, and C.
- Each section has four input channels and one output channel.
- The middle section, marked mix mA, can be optionally mixed into the upper section mix lB and the lower section mix rC.
- Two 3-position switches allow for including this additional submix in the upper and lower sections.
- The switches offer three options: 50% attenuation, off, and 100% (no attenuation).
- Each summing section includes a soft clipping circuit to prevent distortion.
- Additionally, there is a signal level indicator in each section that shows the volume of the corresponding output using light intensity and colour, gradually changing from green to yellow and red when the sum exceeds 16Vpp.
Installation
- Ensure you have 6hp of free space in your Eurorack cabinet.
- Fasten the module by using the supplied screws.
- Before powering up, consider selecting the desired attenuation for each section by setting the three jumpers at the back of the module.
- No jumper means unity gain (1:1), while a jumper sets the attenuation at -12dB (1:4).
Operation
- The main application of Sopot is combining up to four stereo sources (mix l for the left channel, mix r for the right channel) with up to four mono sources (mix m fed to the upper and lower sections).
- Depending on the position of the two switches, the middle section’s submix may appear in the stereo panorama as a centred source (100/100) or an off-centred one (100/50 or 50/100).
- Sopot can also be used as three independent signal adders by setting both switches to the centre position (off). Additionally, it can process various control voltages thanks to its DC-coupled signal path.
- Please note that in Eurorack systems, the signal amplitude is limited by the dynamic range of op-amps to +/-10V. It is physically impossible to sum four hot signals without clipping. Therefore, attenuation may be necessary depending on the application and operating scenarios.
- Attenuation can be set using the three jumpers at the back of the module, one for each section. No jumper means unity gain (1:1), while a jumper in place sets the attenuation at -12dB (1:4).
- Please note that the jumpers adjust the attenuation for the outputs of each section independently.
- Even with attenuation set to 1:4, it is still possible to occasionally overdrive a summing mixer when the incoming signals are sufficiently hot. To address this, each section features a special soft clipping circuit that offers smooth saturation of the peaks.
Frequently Asked Questions (FAQ)
- Q: What is the power requirement for Sopot?
- A: Sopot requires 6hp of free space in the Eurorack cabinet.
- Q: Can Sopot handle hot signals without distortion?
- A: No, it is physically impossible to sum four hot signals without clipping. However, Sopot includes a soft clipping circuit in each section to prevent unpleasant distortion.
- Q: How can I adjust the attenuation in each section?
- A: You can set the attenuation using the three jumpers at the back of the module. No jumper means unity gain (1:1), while a jumper in place sets the attenuation at -12dB (1:4).

SALUT

Thank you for purchasing this Xaoc Devices product.
Sopot [ˈsɔpɔt] is a triple summing mixer featuring three signal-adding sections, with the middle one optionally fed to the top and bottom ones.
Sopot is a compact utility module useful in summing multiple stereo and mono sound sources (up to four signals for each section).
To better understand the device, we strongly advise the user to read through the entire manual before use.

INSTALLATION

The module requires 6hp worth of free space in the Eurorack cabinet.
Always turn the power off before plugging the module into the bus board using the supplied 16-pin to 10-pin ribbon cable, paying close attention to the power cable pinout and orientation.
The red stripe indicates the negative rail and should match the –12v mark on the bus board and the unit.
Sopot is internally secured against a reversed power connection; however, flipping the 16-pin plug may cause serious damage to other components of your system because it will short-circuit the +12V and +5V power lines.
Always pay particularly close attention to the proper orientation of your ribbon cable on both sides!
The module should be fastened by mounting the supplied screws before powering up. However, before doing so, you may consider selecting the desired attenuation in each of the three sections by appropriately setting the three jumpers at the back.
A detailed explanation of their function is provided below.

MODULE OVERVIEW

Sopot features three independent summing sections A, B, and C. Each section has four inputs 1 and one output 2.
The middle section, marked mix m A, may be optionally mixed into the upper one, mix l B, and the lower one, mix r C. Two 3-position switches 3 allow for including this additional submix in the upper and lower sections, or both (or neither).
The switches offer three options: 50% attenuation, off, and 100% (no attenuation).
Each summing section features a soft clipping circuit to prevent unpleasant distortion.
In addition, there is a signal level indicator 4 in each of the three summing sections. It shows the volume of the corresponding output using light intensity and colour, gradually changing from green to yellow and red when the sum exceeds 16Vpp.

OPERATION

The main application of Sopot is combining up to four stereo sources (mix l for the left channel, mix r for the right channel) with up to four mono sources (mix m fed to the upper and lower sections).
Depending on the position of the two switches, the middle section’s submission may appear in the stereo panorama as a centred source (100/100) or an off-centred one (100/50 or 50/100).

Front Panel Overview

XAOC-1980-Sopot-Mixers-FIG-1

Sopot can also be used as three independent signal adders (both switches in the centre position for off) or for processing various control voltages thanks to its DC-coupled signal path.
Please keep in mind that the signal amplitude in Eurorack is limited by the dynamic range of op-amps to +/-10V, and it is physically impossible to sum four hot signals without clipping.
Therefore, Sopot can handle sounds that mostly do not overlap (e.g., different voices of a rhythmic section). Still, attenuation may be necessary depending on the application (e.g., mixing continuous signals) and operating scenarios.
Attenuation may be set using three jumpers at the back of the module, one for each section. No jumper means unity gain (1:1), while a jumper in place sets the attenuation at -12dB (1:4).
Please note that the jumpers adjust the attenuation for the outputs of each section independently.
Even with attenuation set to 1:4, it is still possible to occasionally overdrive a summing mixer when the incoming signals are sufficiently hot.
Therefore, each section features a special soft clipping circuit that offers smooth saturation of the peaks. It is the same solution we used in our Tallinn dual VCA.

ACCESSORY

Our Coal Mine black panels are available for all Xaoc Devices modules.
Sold separately. Ask your favourite retailer.

WARRANTY

WARRANTY TERMS
- XAOC DEVICES WARRANT THIS PRODUCT TO BE FREE OF DEFECTS IN MATERIALS OR WORKMANSHIP AND TO CONFORM WITH THE SPECIFICATIONS AT THE TIME OF SHIPMENT FOR ONE YEAR FROM THE DATE OF PURCHASE. DURING THAT PERIOD, ANY MALFUNCTIONING OR DAMAGED UNITS WILL BE REPAIRED, SERVICED, AND CALIBRATED ON A RETURN-TO-FACTORY BASIS. THIS WARRANTY DOES NOT COVER ANY PROBLEMS RESULTING FROM DAMAGES DURING SHIPPING, INCORRECT INSTALLATION OR POWER SUPPLY, IMPROPER WORKING ENVIRONMENT, ABUSIVE TREATMENT, OR ANY OTHER OBVIOUS USER-INFLICTED FAULT.
LEGACY SUPPORT
- IF SOMETHING GOES WRONG WITH AN XAOC PRODUCT AFTER THE WARRANTY PERIOD IS OVER, NO NEED TO WORRY, AS WE’RE STILL HAPPY TO HELP! THIS APPLIES TO ANY DEVICE, WHEREVER, AND WHENEVER ORIGINALLY ACQUIRED. HOWEVER, IN SPECIFIC CASES, WE RESERVE THE RIGHT TO CHARGE FOR LABOR, PARTS, AND TRANSIT EXPENSES WHERE APPLICABLE.
RETURN POLICY
- THE DEVICE INTENDED FOR REPAIR OR REPLACEMENT UNDER WARRANTY NEEDS TO BE SHIPPED IN THE ORIGINAL PACKAGING ONLY AND MUST INCLUDE A COMPLETED RMA FORM. XAOC DEVICES CAN NOT TAKE ANY RESPONSIBILITY FOR DAMAGES CAUSED DURING TRANSPORT. SO BEFORE SENDING US ANYTHING, PLEASE CONTACT US AT SUPPORT@XAOCDEVICES.COM. NOTE THAT ANY UNSOLICITED PARCEL WILL BE REJECTED AND RETURNED!
GENERAL INQUIRIES
- FOR USER FEEDBACK SUGGESTIONS AND DISTRIBUTION TERMS, FEEL FREE TO CONTACT XAOC DEVICES AT INFO@XAOCDEVICES.COM. PLEASE VISIT XAOCDEVICES.COM FOR INFORMATION ABOUT THE CURRENT PRODUCT LINE, USER MANUALS, FIRMWARE UPDATES, TUTORIALS, AND MERCHANDISE
WORKING CLASS ELECTRONICS.
- ALL RIGHTS RESERVED. CONTENT COPYRIGHT © 2022 XAOC DEVICES. COPYING, DISTRIBUTION, OR ANY COMMERCIAL USE IS STRICTLY PROHIBITED AND REQUIRES WRITTEN PERMISSION FROM XAOC DEVICES. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. EDITING BY BRYAN NOLL.