The Marconi Musical Modulator

Built for Daniel GlatzelAndromeda Mega Express Orchestra

The Maconi Musical Modulator is a tube ring modulator effect unit built from an old defective Marconi universal bridge measuring device. When Daniel first expressed interest in an effects unit, we talked about many different possibilities: from a wah wah, to a reverb unit, and so on. However, what he really wanted was something that was very distinctive and prominent, hence we decided on a ring modulator.

Normally seen as unmusical and rather harsh, this unit is anything but. First off, the signal goes through a simple transformer, then a vintage Germanium bridge rectifier and back through another transformer. This is the classic method of a passive ring modulator. The signal is then amplified by a single triode and mixed with the “dry” signal. The dry signal actually is able to be effected as well while a gain, mids and tone control are all available.

The carrier section includes a multi-waveform (square, triangle or sine) inbuilt oscillator. A frequency range control on the large dial allows for a frequency from 10Hz to 1MHz in ten switchable steps– the pot in the middle allows the user to sweep this frequency. With a multi-turn null pot (here labelled “Sensitivity”) and perfectly matched diodes, carrier bleed-through is non-existent. The black jack input accepts an external carrier signal.

Check out the unit in action by seeing the Andromeda Mega Express Orchestra!

The Family Day Tube Channel Strip

Built for Bendik Toming– Family Day Recordings

It’s often the case that a customer asks for in all-in-one box. Just as often, we try to discourage the request as packing a lot of effects or features into one box involves compromises that undermine the quality of the original signal. However, sometimes a good balance can be found if the effects match well with the intention. Such is the case here.

Bendik first contacted us about a vocal preamplifier for the studio but he wanted also some flexibility and a reverb unit inbuilt. As spring reverb combines so well vocals, and the fact that we had this great case lying around that fit a 42cm spring perfectly, it was agreed to put the two units together for a channel strip. The microphone preamplifier section, which can also accept high- impedance signals from a guitar for instance, includes the requisite phantom power as well as a tilt equalizer circuit. Because there is a gain as well as a level control, overdriving the signal is possible when desired. Otherwise, the 60dB of gain offers the chance to use most microphones on a variety of different sources.

The spring reverb section is a simplified version of the common Rerun Electronics circuit– this time however, a Dwell control is added which determines the amount of signal which is sent to the spring. As well, there are controls for high pass and low pass filters. Additionally, a send/return section allows the user to add a compressor or any other effect which might be needed in a studio setup.

The Monoverb Monophonic Tube Spring Reverb Unit

Built for Charles Duff– Matrixxman

The Monoverb is the latest tube spring reverb unit from Rerun Electronics. It continues with the idea of the 2-3-5 Reverb but also includes a “dry” section so that inserting a synth or other line level signal is even simpler. The design allows for the original signal to be adjusted with a tilt tone control and a bit of overdrive if so desired. Otherwise, it just as easy to use the unit in the signal path of a mixer or soundcard.

Otherwise, the power supply has been completely re-designed for this unit for an even cleaner and quieter reverb effect. The case makes an excellent statement and is perfect size to hold the 42cm long springs.