AJH Synth V-Scale In Action

AJH Synth tells us that V-Scale is not Just a buffered multiple, but a tool to fine tune CV signals and improper VCO scaling. They have posted this video which demonstrates how V-Scale can help correct a vintage synth's tuning / scaling by +/- 5% while also serving as a highly accurate buffered mult. This is what they have to say...

Not all buffered mults are born equal. AJH Synth's V-Scale not only serves as a highly accurate buffered mult, but is also capable of solving impedance mismatch issues and tracking problems. On the V-Scale, four of its five outputs are able to be adjusted up or down by making fine adjustments between +/-5% from the front panel. As a result, VCOs or VCF's that don't track at exactly 1V/Oct can be adjusted to track correctly without having to re-calibrate the VCO or VCF themselves. In this video, AJH Synth and @DreamsOfWires demonstrates how a vintage synth is able to play in tune with a larger Eurorack system thanks to the V-Scale.

The video demonstrates how a V-SCALE can be used compensate for tuning and tracking problems on an old vintage synthesizer from the late 70's. It also shows how the AJH Synth Precision Voltages can be useful in helping establish a root key, since this module is able to accurately offset an incoming control voltage by semitones and octaves, either up or down. After tuning and tracking issues are addressed, which should be a priority in any performance, a short piece by @DreamsOfWires follows that employs other AJH modulesincluding the Tap Tempo VC-LFO, the Chance Delay, and the Matrix VCF.
 
Some older synths actually use .95V / Oct rather than the modern standard of 1V/Oct--the V-Scale can easily remedy this by bringing it closer to the desired voltage - whether it is too sharp or flat. This achieved by adjusting a small trimmer on the V-Scale with a small flathead screwdriver. When turned clockwise, the scale of the 1V/Oct output is increased, and it is decreased by turning it counter-clockwise. The trimmers on the V-Scale require a very small flat-head screwdriver for adjustments. These micro trimmers allow for many turns for fine-tuning, and are also used to avoid accidental adjustments during a performance.

This patch by @DreamsOfWires features the gate output of the sequencer running into an AJH Synth Chance Delay, which provides interesting variation in the sequence. As 'chance' is reduced, gates - or sequence steps - are randomly ignored making it less predictable and rhythmically more creative. The background drones featured in the video consist of (3) AJH Synth MiniMod VCOs, and the new AJH Matrix VCF filter.

Pricing and Availability:

See website.

More information:

• AJH Synth V-Scale

• Superbooth 2026: AJH Synth Radiophonic System 08-May-26
• AJH Synth Unveils Matrix VCF 02-May-25
• 10 Years Of MiniMod 12-Feb-25
• SUPERBOOTH 2024: AJH Synth - The Radiophonic Modular System 17-May-24
• Hans Zimmer's Modular Synth Recreated 14-May-24