MATRIXSYNTH

Serge Dual ADSR

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"Dual Transient Generator (DTG)

The DUAL TRANSIENT GENERATOR (DTG) provides two independent outputs with voltage controllable rise and fall times.This module is identical to the Dual Universal Slope Generator except that it does not have all of the front panel features. This module is a useful, space-effective unit to be used for many of the same functions as the Dual Universal Slope Generator. Common uses of the Dual Transient Generator are for simple "AR"-type envelope generation, as a dual voltage-controlled low frequency oscillator, or as a voltage-controlled clock (especially suitable for clocking the Touch Keyboard Sequencer or any of the Sequencer Programmers).These functions can be patched with the Dual Universal Slope Generator, but since many of the features are left unused in these patches, the Dual Transient Generator provides the same function while using less front panel space.

Dual Comparator (COM)
The DUAL COMPARATOR (COM) provides several often useful house-keeping functions within the Serge system:

Logical Decisions: If the + input is greater than the - input, then the output will be high. If not, then the output will be low.
Level Detection. A pulse will be generated whenever an input voltage reaches a pre-set threshold. For example, when an envelope detector reaches a certain loudness level, it can be used with the Comparator to generate a pulse to activate or de-activate other events programmed within the synthesizer.

Voltage variable pulse width modulation of any of the Serge oscillators.
"Squaring" audio signals, whereby frequency related pulses are derived from an input signal. These pulses can be used for frequency sub-division (via a Dual Slope Generator or Sequencer), or as raw audio, rich in harmonic content.
In addition to the +/- inputs, eachof the Comparators include a front-panel knob to manually set a threshold.

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Serge Dual Q Filters

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"Audio Mixer w/ phase switch (3x1) (AMX)

The Audio Mixer is a three-in/one-out manual mixer with a phase switch on input 3.

Variable Q VCF (VCFQ)
The VARIABLE Q VCF (VCFQ) is an excellent general-purpose VCF offering simultaneous low-pass, high-pass, band-pass and notch (band-reject) outputs.The resonance (Q) of this filter is dynamically variable by manual or voltage control. The VCF Q has two signal inputs. One incorporates an automatic gain control to prevent the filter from overloading at high Q settings. The second input has a level control so that the percussive effects of overloading the filter can be exploited. When a pulse is applied to the Trigger input, the filter will ring, producing a damped waveform similar to that produced by striking a resonant object. The nature of this ringing is controlled by the Q and the filter frequency. Percussive effects ranging from clicks to the soundof wood blocks and bell tones can be produced and controlled. This ringing effect can be used in conjunction with signals applied to either of the audio inputs to achieve highly controlled complex tonal qualities.

Other comments:
A nice bit of flexibility is the "LO" setting that turns it into a CV processor! ... Recent updates to the filter's circuitry are noticeable as well- Its much easier to get tube-type harmonic warmth just by nudging the gain control. The feedback and overdrive characteristics have also been tweaked to be more musically useful... This filter will not oscillate unless you patch it up for feedback... Hi-Lo range switch for fantastic and unique audio/cv applications - hit it with a pulse, get an unbelievably slow damped sine wave.Calibrated 1 v/oct and attenuated cv inputs, just like the oscillators... Since it's a multi-mode filter, it's 12 dB/oct roll-off. You may want a LPF with more 'bite' in some applications. I think the bandpass and all pass sections of this filter have 6 dB/oct roll-off.

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Serge Dual NTO

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"The Serge Modular Systems NEW TIMBRAL OSCILLATOR (NTO) is the state-of--the-art VCO, featuring exceptional range, superb temperature stability, and accurate tracking. Dynamic depth frequency modulation and voltage control of waveform allow unprecedented control over a wide range of sound qualities.

EXPONENTIAL 1 VOLT/OCTAVE RESPONSE
Exponential response parallels the response of human hearing perception as well as musical pitch structure. With multiple oscillators, each must respond exponentially to control voltages to allow transposition from key to key and to produce alternative equal-tempered tunings such as quarter and third tones. In addition, the one-volt-per-octave response assures that the New Timbral Oscillator is compatible with most keyboard and computer controllers.

ACCURATE TRACKING
When two or more oscillators are tuned, it is expected that they will remain in tune throughout their entire range (in other words, that they track). Even two oscillators which track within a fraction of a semitone will be out of tune at the extremities of their range. Therefore, the New Timbral Oscillators have been designed so that any two will track within one cycle/second throughout their entire musical range.

TEMPERATURE STABILITY
Instability of pitch with changes in temperature is the criticism of most synthesizer VCO's. Performers are aware of the disastrous effects of temperature when they must desperately re-tune oscillators that have drifted during a live performance. The temperature sensitive components are kept at an even 120 degrees by a solid-state "oven". Thus temperature stability is guaranteed from 50 degrees to 100 degrees F.

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TIRACON 6V Hardware Synthesizer

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KORG Mono/Poly SN 370681

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tokyowax (RSS)

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Yamaha CS5 SN 8436

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Bleep Labs HSS3jb- Audio and Video Synthesizer

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"The Hard Soft Synth 3jb is the new audio / video synthesizer by noisemaker extraordinaire, Gieskes.

"Specs:
- 15 audio+video modes and 8 video-only modes.
- RCA, S-video, and VGA video out.
- Audio, IR, and trigger input as well as trigger out. IR with Handmade Music Austin or Gieskes devices,
hook it up to a modular via trigger or use the audio input to control the sounds and video of the HSS3i.
- Analog low-pass filter controlled via photocell.
- MIDI input controls device parameters.
- Circuit bending, color switching, fade, and individual color controls for video.
- New enclosure and more compact design (5.5″ x 3.5″ x 2.5″).
- Outputs NTSC and PAL"

http://www.bleeplabs.com/
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BOSS DR-110 SN 272000

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"Boss DR-110 Dr. Rhythm analog drum machine, made in about 1983. It's clean and in good working condition. Includes the carrying case and four fresh AA batteries so that you can start playing right away!..."