Specular Reverb v.2 - User Manual (en)

User Manual
Chapter 1 - OVERVIEW
In this new design, we’ve stayed true to the concept of the original pedal but
pushed its potential to the limit, and at the same time addressed its weaknesses.
New features include presets capability and 3 new atmospheric reverb modes.
The overall reverb algorithms have also been redesigned and improved to allow
very long decay time, while mantaining excellent definition and clarity.
Specular Reverb V2 offers one normal reverb mode plus six atmospheric reverb modes. Each one of the six atmospheres has the same ‘basic character’ as
the normal reverb sound, while adding its own unique twists. This is the core concept of the pedal : one great sounding reverb and the ability to add unique atmospheres to it.
Table of Contents 1.
Overview 1-2
Operation 3-5
The Algorithms 6-9
Auto Intensity Sweep 10-11
Important - must read
The table below lists all available modes with their respective knob functions.
Primary Atmosphere Secondary Atmosphere MODES DECAY DAMPING INTENSITY Normal Decay HF Damping ‐ [ M ] Modulated Decay HF Damping Intensity [ S ] Shimmer Decay HF Damping Intensity [ E ] Echo Reverb Level Echo Time Echo Regen [ T ] Tremble Decay Speed Intensity [ V ] Voices Decay [ I ] Infinity Decay HF Damping Voice Select Tone Intensity Atmosphere LED 
Off : Normal reverb mode. Green : Primary atmosphere set (Modulated, Shimmer, Echo)  Red : Secondary atmosphere set (Tremble, Voices, Infinity) Use this selector switch to choose between Modulated, Shimmer and Echo (when
you’re in primary set) or between Tremble. Voices, and Infinity (when you’re in
secondary set)
See chapter 2 for details.
Chapter 2 - Operation
All features and operations of the pedal are accessible through the 2 footswitches.
Operation of the footswitches have been carefully designed to keep things as
simple and intuitive as possible.
Engage LED Atmosphere LED [Preset / Bypass] [Select / Atmosphere] Atmosphere selector switch Switching between Normal Reverb and Atmospheric Reverbs (M.S.E / T.V.I)
1. Press both footswitches simultaneously.
Don’t worry about doing this while playing live, the state of atmosphere can be
stored in presets. Posistion of the Atmosphere selector switch determines which
mode gets activated (this information is also stored in presets).
Saving a preset
1. Press [Select / Atmosphere] to select the desired preset location.
2. Press and hold [Preset / Bypass] until the Engage LED flashes.
Loading a preset
1. Press [Select / Atmosphere] to select the desired preset location.
2. Press [Preset / Bypass] to load the selected preset.
Presets are selected by going through each location in the ‘Up’ direction (1, 2, 3,
…), while going trough these steps the sound does not get updated until selection
is confirmed by pressing [Preset / Bypass].
Bypassing or Engaging the pedal
1. Press [Preset / Bypass].
Toggling the Atmosphere Set
Primary set
: M . S . E ‐ Modulated, Shimmer, Echo
Secondary set :
T . V . I ‐ Tremble, Voices, Infinity
Only one set can be activated at a given time.
To go back and forth between the two atmosphere sets do the following :
1. Press and hold both footswitches until the Atmosphere LED changes
its color and flashes 3x.
Atmosphere LED 
Off : Normal reverb mode. Green : Primary atmosphere set (Modulated, Shimmer, Echo)  Red : Secondary atmosphere set (Tremble, Voices, Infinity) Each atmosphere set has its own preset space : so you have 4 available presets
when using the primary atmophere set, and another 4 presets when using the
secondary atmosphere set.
M . S . E
Preset 1
Preset 1
Preset 2
Preset 2
Preset 3
Preset 3
Preset 4
Preset 4
For example, you can have preset arrangement like this :
M . S . E
Preset location 1 -
Normal Reverb
Tremble (slow)
Preset location 2 -
Shimmer (low intensity)
Tremble (fast)
Preset location 3 -
Shimmer (high intensity)
Voices (perfect fifth)
Preset location 4 -
Voices (octave)
Let’s say the current sound is Shimmer (low intensity), to switch to the Voices (octave) sound do the following :
1. Switch to Secondary atmosphere set.
2. Select preset location 4.
3. Confirm the selection.
Chapter 3 - The Algorithms
Normal Reverb
This is the ‘mother’ reverb whose basic character is shared by all modes in this
pedal. The design is influenced more by psychoacoustic principles rather than
geometric representation (room, hall, chamber, etc.). In general, we thrived for a
reverb that sounds good over the whole span of Decay settings, this yields a versatile reverb that can be used to achieve anything from subtle ambience, medium
sized room, all the way to very large majestic spaces with seemingly endless reverb tails.
controls reverb level
controls reverb decay time
controls high-freq damping
(turn counter clockwise for
brighther reverb, clockwise for
darker reverb).
Not used
standard reverb control
adds modulation to the late reverberation. As the Intensity knob is turned clockwise, both depth and intensity increases; approaching the maximum position a
weird but beautiful swirling resonance starts to appear.
controls modulation intensity
standard reverb control
The Algorithms
adds regenerative octave components onto the reverberation. The harmonized
decay emulates the presence of multiple strings pads accompanying your instrument. Used together with a volume pedal this atmospheric mode can work magic!
controls shimmer intensity
standard reverb control
this mode is unique compared to the other atmospheres in the sense that it’s not
‘reverb with echoes added in’, instead, it’s a ‘reverbed echo’. The effect that is in
focus here is the echo, with reverb being the additive component.
There is only one reverb parameter that is adjustable : reverb level. The damping
parameter is fixed to a moderate setting, and decay parameter interacts with echo
regeneration and echo time in a way that is pleasant and physically meaningful.
controls reverb level
controls echo regeneration
controls echo time
controls echo level
The Algorithms
adds amplitude modulation (tremolo) to the reverb. Only the reverberated signal is
affected, while the direct signal remains intact. The result is a very interesting
pulsating ambience that injects rhythm to the standard reverb sound.
controls tremolo intensity
standard reverb control
controls tremolo speed
adds a pitch-shifted secondary voice on top of the late reverberation. There are
three interval choices : Unison (no shift), Perfect Fifth (7 semitones), and Octave
(12 semitones). The Intensity knob is partitioned into 3 regions, each region represents a distict voice.
controls voice selection
standard reverb control
Perfect Fifth
(no pitch shift)
Voice Select
The Algorithms
This mode allows you to capture a brief snapshot of the sound you are playing,
and hold it indefinitely, then you can play over it (with reverberation). Later on, you
can fade out the sustained sound, and immediately fade in a new one. Here’s how
you do it :
1. Adjust Blend and Decay knob to get the desired amount of reverb mix and
reverb time. Leave Damping and Intensity knobs at midpoint.
2. Press and hold [Select / Atmosphere], when both LEDs starts flashing the pedal
began to continuously capture a snapshot of whatever you are playing. When
you release the footswitch, the pedal will take the last 0.25 seconds of the
captured sound and hold it indefinitely.
3. Now adjust Intensity and Damping to get the desired level and tonality for the
sustained sound. The Intensity knob runs backward : the sound gets more
intense as you turn counter-clockwise.
* Do not turn the Intensity knob all the way to the right (clockwise), doing this
will shutdown the sustained sound.
Now you can play over the sustained sound, and when you want to change the
sustained sound with a new one, simply repeat step-2; the current sustained
sound will fade out and then you can fade in a new one. The new sound will fade
in to the level you’ve set previously.
standard reverb control
for the infinite sustained part of the sound
controls intensity
controls tonality
Chapter 4 - Auto Intensity Sweep
This feature is applicable only to Modulated, Shimmer, Echo, Tremble, and Voices.
When you activate this feature the pedal automatically sweeps the parameter
controlled by the Intensity knob to the maximum value, hold it there, and sweeps it
back to the previously set value - It’s like having someone turns the Intensity knob
while you’re playing. Used judiciously, this feature introduces useful dynamic element to the ambience soundscape.
Press and hold [Select Atmosphere].
The parameter controlled by the Intensity
knob gradually sweeps to maximum value
(as if someone slowly turns the Intensity
knob all the way up).
As long as you hold the footswitch down, the
intensity parameter stays at its maximum
value and both LEDs keep on flashing.
When you finally release the footswitch, the
Intensity parameter slowly sweeps back to
the previously set value.
Try this out :
1. Activate SHIMMER mode.
2. Set the Intensity knob to a low setting (about 9 o’clock).
3. Set Blend, Decay, and Damping as desired.
4. Start playing, a low level shimmer effect will be heard on top of the reverberation.
5. Execute auto intensity sweep.
Here’s another cool one :
1. Activate VOICES mode.
2. Set the Intensity knob to minimum (Unison voice mode).
3. Set Blend, Decay, and Damping as desired.
4. Start playing, the sound is similar to the normal reverb (Unison = no shift).
5. Execute auto intensity sweep.
Features :
Pristine reverbs in a compact pedal.
Fully programmable (4 x 2 presets).
Normal reverb + 6 atmospheric reverbs.
Stereo input and output.
24-bits signal processing.
Analog Dry-thru.
Reverb tails persistence.
Specifications :
Input impedance
: 1 MOhm.
Output impedance : 500 Ohm.
Current consumption : ~ 100 mA.
Weight : 0.6 Kg (1.2 lbs).
Dimension : 12 (L) x 6.5 (W) x 3.6 (H) cm
Powered by an external 9V DC Adaptor (sold separately).
This product is designed and manufactured by :
Email : gfisys@gmail.com.
Web : www.gfisystem.com
GFI System
Jakarta, Indonesia.