analog spring reverb
The VERMONA Retroverb unifies the classic Spring Reverb sound with a Voltage Controlled Amplifier and Filter, all in one classy wooden panelled housing. This unique combination brings the user a highly flexible and versatile effect, that one will rarely find in another electro - mechanical device.
The centre piece of the Retroverb is a Spring 'Hall' Reverb from traditional manufacturers ACCUTRONICS. This spring module (type 9) is hung with six springs, coupled and placed in parallel, resulting in 3 final springs that are roughly 36 centimetres in length. The physical size of the springs and the dedicated effort in construction produces a rich, full reverb effect with a unique character.
Next to the GAIN dial is the MODE selector, which will set the ground function of the Retroverb. The following four users modes are available:
- 1. Spring, normal - all elements are sent through the signal path, and the outputs operate normally.
- 2. Spring, reversed - all elements are sent through the signal path, and the right output is Phase reversed by 180°.
- 3. Non-Spring, normal - the Spring Reverb is removed from the signal path, and the outputs operate normally.
- 4. Non-Spring, reversed - the Spring Reverb is removed from the signal path, and the right output is Phase reversed by 180°.
In both "Non-Spring" user modes the Retroverb does not create a Spring Reverb effect, but one can treat the input signal with the EQ, VCF and VCA sections - creating typical (or unusual) Filter and Tremolo Effects. When using Phase reversal in modes 2 and 4 you will perceive a wider stereo image, due to the random annulments of frequencies.
First of all after the Spring Reverb is the two band Equalizer which can raise or lower Bass and High frequencies by 15dB. The Equalizer (like all the following sections) works explicitly on the effected signal. In the "Spring" user modes the reverb sound will always be effected. Already at this point in the signal chain, the effect can be strongly influenced and shaped to your sonic needs.
VCF / VCA Section
In this section you can make the most influential manipulations to the effected sound. First the signal runs through a resonant 12dB-low pass filter which can filter out the high parts of the signal. To add some movement into the game, the CUTOFF Frequency can be modulated by the integrated Envelope Generator, or by an external foot-pedal or other voltage controlled source.
After the Filter follows the Voltage Controlled Amplifier (VCA). Here the dynamics of the Reverb ("Spring-Mode") or input signal ("Non-Spring-Mode") can be changed. You can also use the Envelope Generator to modulate the VCA.
For some highly dynamic movement to your audio signal there is the Attack and Decay Envelope Generator, which can be triggered in four different ways:
- Input signal
The envelope will be triggered by a specific level at the input stage, the sensitivity of which can be set with the TRIG. SENSE dial.
- Audio Trigger/Gate Signal
The envelope can be triggered by a second audio signal or a 5V-Gate Signal connected to the rear side of the Retroverb.
- Internal Metronome (Clock)
The internal Clock triggers the envelope periodically. So you get a kind of LFO which the Attack and Decay can be individually set to.
An additional connection on the rear side of the unit allows you to connect a standard foot-switch to manually trigger the envelope.
Only through the connection to the Envelope Generator can the real potential of the VCF and VCA sections be fully realised. From effects similar to delays, cut reverb tails or reversed reverbs up to tremolo, auto wah and much more - everything is possible.
A special and unique feature is the CRASH-Function. You can safely achieve the popular "Thunder-Effect" produced when a guitar combo fitted with a spring reverb is kicked. With the Retroverb one gets the effect without any physical pain, very simply by a button press, foot-switch, CV Gate or Audio-Trigger.