Tuesday, August 16, 2022

T2K-VCF Transcendent 2000 Eurorack Filter Adaptation Demo No Talking


T2K-VCF is a Eurorack modular adaptation of the Powertran Transcendent 2000 analog filter. Wavefolded material sounds phenomenal on this, coming from Capt'n Big-O. Op Amp gain compensation means no loss of bass frequencies even at extreme resonance settings. Resonance will self-oscillate and produces a nice aggressive sinewave alone. With some coaxing you can track the self-osc w/ v/oct. At the end you'll hear the filter output going into a phaser and delay.

Sound sources | Capt'n Big-O + GSE 101-VCO
Envelope | GSE 2xADSR
Phaser | GSE Polychrome Phaser
Delay | FX Aid
Recorded direct, no other mastering or effects.

Check my Reverb store for T2K-VCF availability and other cool modules

Monday, August 15, 2022

T2K-VCF Eurorack Filter Adaptation Now Available [Powertran Transcendent 2000]

Introducing the T2K-VCF: an 8HP analog circuit adaptation of the lowpass/bandpass filter from an obscure 70s monosynth – Powertran Transcendent 2000. T2K-VCF is a 2-pole CA3080 OTA design w/ CA3140 op amp compensation at each stage. Translation = no loss of bass frequencies even at extreme resonance settings. Resonance will self-oscillate and produces a nice sinewave alone. T2K-VCF will fatten up routine oscillators - transform boring square/pulse and straight ramps into curvy vixens dressed to kill. Wavefolded material sounds phenomenal on this.

FREQUENCY | the initial Cutoff Frequency of the filter
RESONANCE | the depth of the peak frequency resonant feedback
IN1 & IN2 | Mix together 2 different audio signals, each w/ their own mix pot.
KB | Modulate the Cutoff Frequency w/ a V/oct signal or any other polar/bi-polar mod. Self-oscillation resonance will track v/oct loosely, but you will need to tweak the Initial Cutoff Frequency (Tune) and the KB amount knob (width tracking) to get there.
CV | Another Frequency mod can go here, range is greater than the KB input.
SHAPE | Select between LP lowpass or BP bandpass filter output w/ this mode switch.
OUT | the audio output jack of the filter

Specs 8HP Module width
24 mm Module depth
14 mA on +12V
25 mA on -12V
0ma on 5V (not used)

Check my Reverb Store for availability and pricing.

Tuesday, August 9, 2022

Can I Revive Kenwood DX-7030 DAT Machine Recorder?



Today I'm investigating issues with a Kenwood DX-7030 DAT Recorder.
The door opens and closes, but doesn't play the tape.
There's not a lot of mech service video content on this model.
And I have no service manual.
Can I get this thing working?

This is just a summary of about 10 hours of inspection, fiddling, proding, and poking.
Not including watching a load of DAT mech cleaning content.
Big shout out to 12voltvids
There you can see more detailed tips for cleaning DAT mechanisms.

Timestamps
0:00 Intro and Symptoms
0:37 Tape Mech Breakdown
2:25 Take-up Rollers
3:10 Switch cleaning
4:14 Results?

Be sure to check out my cool eurorack synthesizer modules in my Reverb store.