ReProducer Epic 4 User manual

1
Compact Precision
Nearfield Studio
Monitor
User Guide

2
Welcome!.....................................................................................................3
The Concept Behind Epic 4.................................................................3
Quick Reference.......................................................................................4
Unboxing.....................................................................................................4
Setup Recommendations....................................................................5
Spikes & Silicone Pads..................................................................5
Ideal Listening Distance & Height...........................................6
Correct Temporal Alignment of Drivers...............................6
Stereo Image...................................................................................6
Spacing......................................................................................7
Wall Mounting.................................................................................7
SoundLevel.................................................................................................8
Fire-Tuning & Room Adjustments....................................................8
Overload....................................................................................................9
Breaking-In Your Speakers..................................................................9
Safety Precautions..................................................................................9
Technical Specifications......................................................................10
Technical Support...................................................................................11
Limited Warranty....................................................................................12
Table of Contents

3
Welcome!
Thank you for purchasing this set of Epic 4 two-way professional compact nearfield
monitor speakers! We hope you enjoy this amazing near-field monitoring solution.
This guide will give you some important safety tips and suggestions to get the best
perfomance from your Epic 4 monitors!
The Concept Behind Epic 4
Trends in the last couple of years have moved many producers to work in smaller,
more intimate spaces, while multi-channel content development has also reached
never-before-seen levels. Much of this content is destined for enhanced multichannel
home theater systems, and producing it requires a system of many smaller reference
monitors, typically coupled with a larger subwoofer, such as 5.1/7.1 surround, Dolby
Atmos systems, etc.
Our Epic 4 compact nearfield studio monitor is the perfect solution for either of these
use cases. It’s compact size makes it perfect for home studios, improvised studios,
traveling engineers and producers, and multi-channel monitoring systems.
In the tradition of creating uncompromising products, the reProducer Audio Labs
team insisted on in-house development of all key speaker parts, to allow for the most
accurate sound performance possible.
Unboxing
Remove the Epic 4s from their carrying case, and from their protective cloth bags,
being sure not to touch the passive radiator, which faces up within the bag.
Share Your Studio!
We get excited each time someone opens, unboxes, and installs their new Epic
monitors, please feel free to tag us and share your studio pictures with us!

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Epic 4 Quick Reference
Tweeter
LED
Woofer
Passive Radiator
(Bottom Panel)
Spike
Silicone Pad
Back Panel
Front Panel
Power Switch
Threads for Wall Mounts Threads for Wall Mounts
Power Socket
Standby Switch
XLR Input
RCA Input
Clip Indicator
Standby Mode
Working Mode
VOLUME +5-5
LF-TRIM +5-5
HF-TRIM +5-5
www.reproduceraudiolabs.com
UNBALANCED
-10dBV
STANDBY
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR.
DO NOT EXPOSE TO RAIN OR MOISTURE.
HIGH SOUND PRESSURE LEVEL CAN CAUSE
PERMANENT HEARING DAMAGE.
ON OFF
BALANCED
INPUT
+4dBV
MADE IN CHINA
ON OFF 100-240VAC, 50/60HZ
POWER RATING 100W
SN:
+5
dB
0
100 10k1k Hz
-5
LF HF
Volume Control
Low Frequency Trim
High Frequency Trim

5
When removing your Epic 4s from the
case, be sure not touch or damage the
passive radiator in the process.
!
Setup Recommendations
In order to achieve the best possible sound quality, we recommended considering the
interaction between the loudspeakers and the surrounding physical and acoustical
environment, as well as the position of the listener relative to the loudspeakers.
Please make sure there are no obstacles between the speakers and your ears. Nothing
that will obstruct or break the sound waves, like monitor screens, large-leafed plants,
etc… Acoustically transparent elements can be placed there, but we can’t think of any
qualifying items currently. Please let us know if you find exceptions to the rule!
Spikes & Silicone Pads
Before using your Epic 4s, we recommended installing the included silicone pads
to dampen vibration, and to prevent the speakers from moving at when played at a
high volume (though this will ultimately depend on the surface).
VOLUME +5-5
LF-TRIM +5-5
HF-TRIM +5-5
www.reproduceraudiolabs.com
UNBALANCED
-10dBV
STANDBY
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
NE PASOUVRIR.
DO NOT EXPOSE TO RAIN OR MOISTURE.
HIGH SOUND PRESSURE LEVEL CAN CAUSE
PERMANENT HEARING DAMAGE.
ON OFF
BALANCED
INPUT
+4dBV
MADE IN CHINA
ON OFF 100-240VAC, 50/60HZ
POWER RATING 100W
SN:
+5
dB
0
100 10k1k Hz
-5
LF HF
VOLUME +5-5
LF-TRIM +5-5
HF-TRIM +5-5
www.reproduceraudiolabs.com
UNBALANCED
-10dBV
STANDBY
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS:RISQUE DE CHOC ELECTRIQUE
NE PASOUVRIR.
DO NOT EXPOSE TO RAIN OR MOISTURE.
HIGH SOUND PRESSURE LEVEL CAN CAUSE
PERMANENT HEARING DAMAGE.
ON OFF
BALANCED
INPUT
+4dBV
MADE IN CHINA
ON OFF 100-240VAC, 50/60HZ
POWER RATING 100W
SN:
+5
dB
0
100 10k1k Hz
-5
LF HF
Step 1
Place the speaker upside
down on a flat surface.
Step 2
Install the spikes in cabinet by
threading them in clockwise.
Step 3
Place spikes into the silicone pads
and push cabinet from the top
to seat the spikes in the pads.

Ideal Listening Distance & Height
Epic 4 is optimized for a listening distance of 0.8 m to 1.4 m, with the tweeter level
with the listener’s ears.
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Correct Temporal Alignment of Drivers
The front plate of the Epic 4 is designed to be inclined! – Do not raise the back of the
cabinet, resulting in a vertical front.
We highly recommend not using your Epic 4s on a writing desk or placing them below
ear level. Please make sure to use a stand or leveler to achieve the right position.
Just to make sure, do NOT set up the Epic 4s according to either diagram above!
Stereo Image
To achieve perfect stereo imaging please make sure that the position of the speakers
– and the listener of course – are located symmetrically in the room, so the distance
from left speaker to left wall and right speaker to right wall should be (approximately)
similar. The farther away the walls are the more leeway you have as the reflected sound
will be delayed more.

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A good rule of thumb to establish a solid stereo image is to construct an equilateral triangle between the two cabinets
and the listening position.
The often quoted equilateral triangle is a practical recommendation, but depending
on the spatial configuration of the listening room and the amount and quality of any
reflections (primarily from the walls, ceiling and floor) it might be preferable to move
the listening position to a spot slightly inside the triangle.
An easy way to find the optimal listening position is to play a mono signal over both
speakers, moving slowly back and forth until a solid phantom source is discernible in
the middle.
Spacing
Your Epic 4s do not only output sound on-axis! The passive radiator on the bottom of
the cabinet also displaces air. The supplied spikes must be used to allow the required
fast airflow and the area beneath and around the passive radiator should be clear.
Wall Mounting
Epic 4’s back panel features threaded mounting holes that can be used to attach wall
mounts.

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Sound Level
The linearity of human auditory perception is highly dependent of the sound pressure
level, and the range for optimal linearity is limited! We recommend a use of 83-86 dB
Sound Pressure Level (SPL) at the listening position. Staying in this range will ensure
you are able to make the right mixing decisions for a long period of time.
With these values you can’t go wrong! Mastering engineer Bob Katz recommends
working at 83 dB SPL (C-weighted, slow meter setting), calibrated using pink noise for
a single channel, 86 dB for stereo (stereo combined using uncorrelated pink noise).
And account for listening fatigue. Take a break when you feel the need to raise the
overall level. Rest assured, this is the right thing to do!
Fine Tuning and Room Adjustments
The listening environment usually has a big influence on the perceived sound quality.
Depending on the position of the speakers in the room and the properties of the
space a correction may be needed, and what do you know? We have just the thing!
On the back side of the cabinet you will find two knobs that allow you to optimize
the tuning of the Epic 4. Both trims cut or boost in a range of ±5 dB in 1 dB steps. The
HF-Trim starts above 2.5 kHz, the LF-Trim below 250 Hz.
In a bright sounding room, with many flat and solid surfaces, you may need less
treble. Use the HF-Trim-Knob (“High Frequency Tune”) to attenuate the HF range.
In a dark or boomy sounding environment, or if the listening distance is higher than
recommended, you can increase the HF component proportionally.
The LF-Trim (“Low Frequency Tune”) works in a similar fashion. It will usually be the
distance between the cabinets and the walls that necessitates a LF adjustment. The
original tuning was determined in a free (4Pi), anechoic environment with the knobs
in the middle position. Close to any wall this will change to a kind of boundary, 2Pi
arrangement with a LF boost. You can reduce this effect using the LF-Trim.
All the while maintaining excellent phase response!
Please do not exaggerate the level as this
can possibly damage your ears permanently!
!

Overload
When the white LED on the front plate turns red it indicates that your level is nearing
the clipping point. Temporary red flashing is acceptable, especially when working
with audio containing a disproportionate amount of LF content. But when the LED is
more on than off you should grab the precision gain attenuator (not a simple volume
control!) and back down.
Breaking-In Your Speakers
We recommend breaking in your new Epic 4s for approximately 72 hours. During the
break-in period, it’s recommended to play a variety of program material at moderate
volume. The break-in process ensures maximum flexibility in the rubber components
of the speaker cones.
Safety Precautions!
• High sound pressure level can DAMAGE your hearing permanently!
Especially at short distances the Epic 4 is able to generate a significantly
higher SPL than the recommended limit for ear protection!
• To prevent compression effects we decided not to use any dynamic
limitation. Please make sure to reduce the levels if you became aware of any
DISTORTION!
• Please do NOT expose the speakers to heat, direct sunlight or moisture!
Please only use a lightly moistened cloth to clean the surface of the cabinet.
• Please do NOT attempt to open the cabinet! There are no user serviceable
parts inside and you risk getting an electric SHOCK.
!
9

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Frequency Response (Tweeter) +/- 3 dB – 80 Hz — 30 kHz
Frequency Response (Woofer) +/-10 dB – 65 Hz — 40 kHz
Amplifier Power Woofer 50W RMS, Tweeter 50W RMS
Amplifier Technology Class D, 115 dB dynamic range, high current and damping,
range over 100 kHz, ultra-low no-noise
Max. SPL per pair (1m/above 100 Hz): 106 dB(C) SPL
Power Supply 100-240 V AC, 50/60 Hz
Power Consumption (Max ) 93 W
Power Consumption (Idle/No Signal ) 1.1 W
Power Consumption (Standby Mode ) .46 W
Woofer 4”, own design, fast transient, free of parasitic response
Tweeter 1”, own design, metal dome with rear chamber
Crossover Frequency 3 kHz, 24 dB/Octave
Input Impedance Balanced (XLR) 12 kOhm
Input Impedance Unbalanced (RCA) 3.3 kOhm
Input Sensitivity Balanced (XLR) + 4 dBu
Input Sensitivity Unbalanced (RCA) -10 dBV
Room Correction EQ High Frequency +/- 5 dB in 1 dB steps from 2.5 kHz
Room Correction EQ Low Frequency +/- 5 dB in 1 dB steps below 250 Hz
Standby On/Off Switchable
Dimensions without Spikes 210(H ) x 160(W) x 175(D) mm
Dimensions with Spikes 240(H ) x 160(W) x 175(D) mm
Weight per Unit 2.95 Kgs
Technical Specifications

11
Technical Support
If you need help with your Epic 4s, please don’t hesitate to contact us!
https://reproduceraudiolabs.com/support

Limited Warranty
[e-mail] | www.reproduceraudiolabs.com | Mittelstraße 37, Laupheim, D-88471, Germany
Epic 4 monitors are covered under warranty to be free from defects for a period of
one year from the date of purchase.
Register your monitors with us:
https://reproduceraudiolabs.com/register
© 2022 reProducer Audio
reProducer Audio Labs designs reliable, sonically uncompromising, and visually
stunning studio monitors that allow audio engineers to make sound decisions
quickly in professional working environments and project studios alike.