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Summary of Contents for SPL Gemini Series
- Page 1 Gemini Mastering M/S Processor Manual...
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Page 2: Table Of Contents
Content Gemini Version 1.1 – 03/2019 Package Contents Product Registration Introduction The first M/S processor in 120V technology Technical Aspects 120 Volt Technology 120 Volt Technology – Diagram Installation Voltage Selection First Steps Cabling: Rear Side XLR inputs and output Ground Lift switch to avoid ground loop 1 Inputs 2 Sends... - Page 3 Content Control Elements 1 Active 2 Insert (MID) 3 Solo (MID) 4 Balance & Trim 5 Balance 6 Trim 7 Insert (SIDE) 8 Solo (SIDE) 9 Filter & Width 10 Stereo Width 11 Elliptical Filter Specifications Measurements Security Advices Notes on Environmental Protection Contact Copy template settings...
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Page 4: Version 1.1 - 03/2019
Unless stated otherwise, everything herein corresponds to the technical status at the time of delivery of the product and user manual by SPL electronics GmbH. The design and circuitry are under continuous development and improvement. Technical specifications are subject to change. -
Page 5: Introduction
In connection with the Stereo Width control, the mixing ratio of both channels can be adjusted. An Elliptical Filter, which can cut low frequency ratios of the side band is also provided. The SPL Gemini Mastering M/S Processor was developed and manufactured in Germany. -
Page 6: Technical Aspects
Technical Aspects 120 Volt Technology SPL‘s goal was to push analog signal processing to the limits. That‘s why we combined the best possible components with a high-grade optimized circuit design. We have been using the in-house developed 120 Volt technology - the highest-ever oper- ating voltage used for audio applications - in all our products from the Mastering series for years. -
Page 7: 120 Volt Technology - Diagram
10 dB higher. THD measurements of the SPL op-amps show a difference of more than 3 dB compared to the OPA134 at 36 V — in terms of sound pressure level, that corresponds to an improvement of more than 50%. -
Page 8: Installation
When you close the lid again, you should see the correct voltage displayed in the opening. On the product site on our website (https://gemini.spl.audio) you will find a video con- cerning the topic “Changing the mains voltage”. If you ever have to exchange a fuse, we recommend the video “Exchange defective fuses”. -
Page 9: Cabling: Rear Side
Cabling: Rear Side XLR inputs and outputs We used exclusively Switchcraft/Neutrik XLR input and output plugs to guarantee perfect connectivity in the studio. They provide an optimal connection thanks to their electrome- chanical design and large contact surface. The image shows the XLR connectors pinout. They are balanced and have three conduc- tors or wires. -
Page 10: Inputs
Cabling: Rear Side C A U T I O N AT T E N T I O N RISK OF ELECTRIC SHOCK RISQUE DE CHOC ÉLECTRIQUE 1. Remove Fuse Holder D O N O T O P E N N E P A S O U V R I R GND LIFT 2. -
Page 11: Returns
SENDS INPUTS We also provide a Screenshow video manual on the product page on our website: https://gemini.spl.audio Returns Additionally, Gemini provides two balanced input jacks, XLR female, labeled as Returns. Connect the left channel to RETURN MID and the right channel to RETURN SIDE. Send and Return together make up the insert of Gemini Mastering M/S Processor. -
Page 12: Pairing Gemini And Dmc
Cabling: Rear Side Pairing Gemini and DMC ~115 V AC/~230 V AC; 50 Hz/60 Hz; P max. 100 W AUDIO FEEDS TO & Serial Number FROM C A U T I O N AT T E N T I O N MC16 RISK OF ELECTRIC SHOCK RISQUE DE CHOC ÉLECTRIQUE... -
Page 13: Pairing Gemini And Hermes
Cabling: Rear Side Pairing Gemini and Hermes Hermes and Gemini Mastering M/S Processor operate in their complete range of func- tions as stand-alone devices. A pairing of Hermes and Gemini enables lots of further possibilities. If the M/S Encoder and Decoder stages of Gemini are each paired with an insert of Hermes, it is possible to freely choose a position for the M/S Encoder and Decoder within the processing chain. -
Page 14: Control Elements
Control Elements Balance Active Insert Solo & Trim 120 V DC Audio Rail Active Insert (MID) Solo (MID) Balance & Trim Balance Trim Active With this button, you activate the M/S Matrix of Gemini. If the button lights up, the M/S Matrix is active. -
Page 15: Solo (Mid)
Stereo Width Elliptical Filter We also provide a Screenshow video manual on the product page on our website: https://gemini.spl.audio Solo (MID) If the SOLO button of the MID section is activated, you can only hear the mid part of the M/S signal. -
Page 16: Balance
Control Elements Balance With the BALANCE control, you can perfectly place the mid part of the stereo signal in the center of the stereo. The BALANCE control features a very high-resolving radius of +/- 3.5dB. When hard left, the mid signal is shifted to the left by 3.5dB within the stereo signal. -
Page 17: Stereo Width
Control Elements Stereo Width With the STEREO WIDTH control, you can increase or attenuate the level of the side signal by 5.5dB. This way, you can change the perception of the stereo width. Elliptical Filter The ELLIPTICAL FILTER (Cauer Filter) removes signal components below a predefined fre- quency from the side signal. -
Page 18: Specifications
Specifications Measurements Inputs Max. Input Level ..............+ 32.5 dBu Input Impedance ..............20 kOhms (bal.) Outputs Max. Output Level ..............+ 32.5 dBu Output Impedance ..............‹ 100 Ohms (bal.) Noise (A-weighted, Insert, Balance & Trim, Filter & Width = active) ..- 98.2 dBu THD &... -
Page 19: Security Advices
Opening the unit Simply put: DON‘T, if you are not a certified SPL technician or engineer. Really: Do not open the device housing, as there is great risk you will damage the device, or – even after being disconnected – you may receive a dangerous electrical shock! -
Page 20: Notes On Environmental Protection
Security Advices Controls and switches Operate the controls and switches only as described in the manual. Incorrect adjustments outside safe parameters can lead to damage and unnecessary repair costs. Never use the switches or level controls to effect excessive or extreme changes. Repairs Unplug the unit from all power and signal connections and immediately contact a quali- fied technician when you think repairs are needed –... -
Page 21: Contact
Videos: youtube.spl.audio © 2019 SPL electronics GmbH This document is the property of SPL and may not be copied or reproduced in any man- ner, in part or fully, without prior authorization by SPL. Sound Performance Lab (SPL) continuously strives to improve its products and reserves the right to modify the prod- uct described in this manual at any time without prior notice.
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