EMM Labs DS-EQ1 User manual

© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL
001
Version 1.1

ank you for choosing EMM Labs
Welcome 002
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL

Warranty
Operational Features
Introduction
Front Panel 008
008
Rear Panel
003
Table Of Contents
Welcome 002
005
007
009
006
Features & Specifications
Table of Contents 003
Safety Instructions 004
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL
010

Safety Instructions
Safety Instructions
Prior to Installing your new EMM Labs product please read the following safety
instructions:
• Read and follow all instructions.
• Keep these instructions.
• Do not use or install product near any sources of water, rain and/or
moisture.
• Clean using only a dry cloth.
• Install only in accordance with the manufacturer’s instructions.
• Refer all servicing to approved service personnel.
• Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
• Do not install product outdoors or in direct sunlight.
• Leave at least 10cm or 4 inches around product to ensure proper
ventilation.
• Do not place product near strong electrical or magnetic
radiation/emissions or near a power amplifier.
This EMM Labs product must be connected to a mains socket outlet with a protective
earthing connection (grounding pin).
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPARATUS TO WATER OR MOISTURE.
EEC: This product has been designed and tested to comply with the limits set out in
EN55013, EN55020 and EN 60065:2009 (electrical safety).
004
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL

Warranty
Warranty
EMM Labs warrants the DS-EQ1 against defects in material and
workmanship under normal use and service for a period of time specied
by the product’s serial number from the date of purchase. e warranty
time period is 5 years. Warranty is limited to the original owner and is
non-transferable.
EMM Labs agrees to pay return shipping charges back to the owner when
the product is sent to EMM Labs within the rst 90 days aer purchase
(US and Canada end-users only). Otherwise, owner will be responsible
for all shipping charges to and from EMM Labs.
For all warranty claims, a copy of the original invoice must accompany
the product.
Opening the product or modifying it in any way by the owner, including
but not limited to cryogenic treatment, will void any warranty.
shipping instructions before shipping any product to EMM Labs.
EMM Labs products are sold worldwide through authorized dealers with
restricted territories. EMM Labs products purchased from
non-authorized dealers or from a dealer selling outside his / her
authorized territory will automatically void product warranty.
DS Audio cartridges used with the DS-EQ1 is fully warranted by DS
Audio against defects or issues, as per DS Audio’s original
manufacturer’s warranty.
005
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL

006
Introduction
Introduction
e DS-EQ1 is designed with an obsessive desire to lower noise and
distortion, and to extract every bit of detail and information from any DS
Audio optical cartridge. e DS-EQ1’s circuits are all Meitner designed
in-house, including it’s power supply, and are optimized for short and
direct audio paths. EMM uses a custom made ceramic PCB for the
equalization and amplication stages, which allow for the superior
extraction of low level details in the audio.
From its proprietary equalization, class A amplication, and power supply
systems, to its touch panel buttons and sophisticated aluminium chassis,
the DS-EQ1 is the ultimate partner to any DS Audio optical cartridge.
e DS-EQ1 OPTICAL EQUALIZER features:
• Proprietary & discrete equalization specically designed for all DS
Audio optical cartridges
• Ultra low distortion
• Custom designed discrete class A amplication
• Front panel user selectable standard 50Hz RIAA response or with
added 2nd order 15Hz high pass lter
• Optimized short audio paths throughout
• Latest generation custom made power system
• Custom aerospace-grade ceramic circuit board
• Power and lter touch buttons
• Precision-machined aluminum chassis
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL

007
Features & Specifications
Features & Specications
Analog Inputs
• 1 Stereo sets of Un-Balanced (RCA)
e DS-EQ1’s inputs are optimized for use exclusively with all DS Audio Cartridges.
Analog Outputs
• 1 Stereo set of Balanced (XLR) - Output Impedance: 300Ω
• 1 Stereo set of Un-Balanced (RCA) - Output Impedance: 150Ω
Output Levels
XLR outputs: 1V (+2.2dBu)
RCA outputs: 0.5V (-3.8dBu)
Power Supply
• Power factor corrected
• Universal 85V-260V, 50/60Hz
• Power consumption: max. 50W
Dimensions W x D x H: 438 x 381 x 102 mm, Weight: 12kg
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL

008
Front Panel
Front Panel & Functions
1. Power O/Standby button
Turns the DS-EQ1 on from standby.
2. Cartridge Power On/O touch button
Turns the power on/o to the optical cartridge.
3. Filter Select touch button
Toggles between standard 50Hz RIAA response or RIAA with added 2nd order 15Hz
high pass lter.
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL

Rear Panel & Functions
1. Mains Power Switch Power Inlet Connector
2. Product Model and Serial Number Indicator:
Warranty void if model/serial number indicator is not attached to unit, missing,
or damaged whereby serial number cannot be seen.
3. Product Universal Voltage Indicator (85V-260V)
4. Le and Right Analog Inputs and Grounding Terminal
5. Le and Right Balanced (XLR) and Un-balanced (RCA) Outputs
009
Rear Panel
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL

010
Operational Features
Main Screen and Button Functions
Please connect provided power cord to DS-EQ1, and attach to an appropriately grounded mains power socket. Attach le and
right input audio channels (le and right RCA connectors) plus ground connector from DS Audio cartridge and turntable to
the DS-EQ1. Attach le and right output audio channels (le and right XLR or RCA connectors) to your stereo pre-amplier
using the appropriate interconnects.
When turned on using the main power switch on the back of the DS-EQ1, the DS-EQ1 will go into full power on mode.
Power will be delivered to the DS Audio cartridge (cartridge will be lit) and the DS-EQ1’s le front panel LED indicator will be
lit (white).
By default the lter will be set to standard 50Hz RIAA response, and the right front panel LED indicator will not be lit.
You can now start playing records, and listening to music using DS Audio cartridges and EMM Labs DS-EQ1 Optical
Equalizer.
1. Cartridge Power Touch Button (Front Panel Le Button)
Press the le front panel button to turn the power to the optical cartridge on or o. When power is on, the le
button’s LED indicator be lit (white). Press again to turn power o to the cartridge when not in use or when changing
records. e le button LED indicator will be o and the middle LED indicator will be lit(red) indicating system is in
standby and no power to the cartridge. e DS Audio’s cartridge will also not be lit when cartridge power is not supplied
to it.
2. Filter Touch Button (Front Panel Right Button)
e DS-EQ1 has 2 lter settings. Default is the standard 50Hz RIAA response. In this mode, the right button’s LED
indicator will not be lit. e second setting adds a second order 15Hz high pass lter to the RIAA response. In this mode
the right button’s LED indicator will be lit (white).
© 2020 EMM Labs Inc., All Rights Reserved. EMM Labs reserves the right to amend specifications & design without notice.
DS-EQ1 OPTICAL EQUALIZER OWNER’S MANUAL
Table of contents