DEMO Alondra Harmonic Tremolo

[jjjimi84]

Build Rating

5.00 star(s)

Here is a little demo for the incredible Alondra Harmonic Tremolo from @jubal81

Alondra Harmonic Tremolo

This thing is beyond cool and sounds unlike any harmonic tremolo I have ever heard. I tried to put it through its paces and make as much of a racket as I could with it. When making the thumbnail for the youtube video I opened it up and my jaw hit the floor. It is one of the cleanest builds I have seen and the way he does the switching system is just too cool for words. I hope you all dig it and please direct any technical questions and requests to the man himself @jubal81

Two things before I hit submit. Without Jason being so kind and asking me to make a demo for him, I doubt I would be back at it. Without him really knowing it, he motivated me to get my shit together and get back at it. My sincerest thanks goes to him and all of you for this forum is truly something special.

Lastly, when asking him about the pedal he spat out a line of technical jargon that had my head spinning. Something about cars going up and down hills and matched LDRs and yadda yadda yadda. It made me realize where my lane is in all of this, to have fun and paint neat shit. Again my sincerest thanks to Jason, you rule!

Dan

 

[chordball]

Man that sounds nice! Do I understand right that this will be available as a DIY project?

 

[jubal81]

Man that sounds nice! Do I understand right that this will be available as a DIY project?

Yeah. I need to update the PCB layout to make more room if people want to add the Tap Tempo footswitch.

 

[jubal81]

Many thanks @jjjimi84
You really put a ton of effort into this!

I'm going to start a new thread soon with all the details, but the circuit behind this is an interesting approach to optical tremolo in that the sweep in the volume change is linear to the LFO wave.

In typical optical modulation effects, the LFO signal itself might be a sine wave, but the volume doesn't actually modulate in a sine wave pattern. This is because of the way an LED and LDR interact.

I AI slopped a diagram of my car analogy. Imagine the sine wave is the LFO and the actual volume is a car driving on that sine wave. In typical optical tremolos, the car speeds "downhill" and is much slower "uphill." With the interaction of the vactrols linearized, the car is always the same speed - very even and smooth up and down.

 

[jwin615]

Awesome to see you back in the saddle @jjjimi84 and indig the circuit @jubal81
I know you've put a lot of effort into your trem work lately. Cool to see some of trckle out.

 

[Thevolumecontrol]

Sounds great, looks great

 

[swelchy]

Refreshing to see @jjjimi84 doing a run through... That pedal looks awesome too.

 

[OD is Glorious]

I dig it. It sounds great.