Pictures of your builds!

...and how to do so...
knockman
KVRAF
1840 posts since 21 Feb, 2004 from somewhere! anywhere!

Post Sat Nov 18, 2017 5:16 pm

A 'modular' spring reverb - you can plug in different tanks (or other resonators). It's based around Sabro Tone's version of runoffgroove's Splitter Blend, with a small amp driving the spring and an adapted pre-amp for the return.
Image
Image

I've found that drivers removed from old NXT flat speakers work really well for both ends of the spring and, luckily, I can find these dirt cheap in the junk stores around Tokyo.
Image

A tank from a previous project - spring tension can be altered:
Image
Image
These things can sound quite odd, especially if driven hard.

For a more natural reverb, however, a proper tank works best - this one came from an old mic mixer/karaoke amp.
Image
Image

I'll try and follow up with some audio, if anyone's interested.
Cheers

User avatar
SJ_Digriz
KVRAF
5951 posts since 5 Jul, 2001 from Just about .... there

Re: Pictures of your builds!

Post Sat Nov 18, 2017 5:17 pm

of course .. audio or didn't happen :)
If you have to ask, you can't afford the answer

sinkmusic
KVRAF
6241 posts since 28 Apr, 2004 from france

Re: Pictures of your builds!

Post Sat Nov 18, 2017 5:22 pm

It looks very nice !
Image

User avatar
thecontrolcentre
KVRAF
24333 posts since 27 Jul, 2005 from the wilds of wanny

Re: Pictures of your builds!

Post Sat Nov 18, 2017 5:31 pm

Awesome :tu:

User avatar
Ichad.c
KVRian
1071 posts since 8 Feb, 2012 from South - Africa

Re: Pictures of your builds!

Post Sat Nov 18, 2017 8:17 pm

knockman wrote:A 'modular' spring reverb - you can plug in different tanks (or other resonators). It's based around Sabro Tone's version of runoffgroove's Splitter Blend, with a small amp driving the spring and an adapted pre-amp for the return.


I'll try and follow up with some audio, if anyone's interested.
Cheers
Looks great! Would love to hear some audio examples.

User avatar
SJ_Digriz
KVRAF
5951 posts since 5 Jul, 2001 from Just about .... there

Re: Pictures of your builds!

Post Sat Nov 18, 2017 8:20 pm

I actually tried to do a grass roots spring reverb and it didn't come out sounding so hot. I'm really curious how that thing sounds.
If you have to ask, you can't afford the answer

knockman
KVRAF
1840 posts since 21 Feb, 2004 from somewhere! anywhere!

Re: Pictures of your builds!

Post Sun Nov 19, 2017 2:51 pm

SJ_Digriz wrote:I actually tried to do a grass roots spring reverb and it didn't come out sounding so hot. I'm really curious how that thing sounds.
There's been a lot of trial and error and times when it lay abandoned. I tried the usual piezo pick-up route but was never really taken with the results. I've spent hours messing about with coils, magnets and transformers but ultimately got the best results from those NXT drivers which are just speakers without the cones. As mentioned above, it can sound odd but it is tweakable enough for certain uses.

I'll post some audio/video in a few days. I've got a hectic start to the week but then a little free time.
Cheers

User avatar
SJ_Digriz
KVRAF
5951 posts since 5 Jul, 2001 from Just about .... there

Re: Pictures of your builds!

Post Sun Nov 19, 2017 3:03 pm

knockman wrote:
SJ_Digriz wrote:I actually tried to do a grass roots spring reverb and it didn't come out sounding so hot. I'm really curious how that thing sounds.
There's been a lot of trial and error and times when it lay abandoned. I tried the usual piezo pick-up route but was never really taken with the results. I've spent hours messing about with coils, magnets and transformers but ultimately got the best results from those NXT drivers which are just speakers without the cones. As mentioned above, it can sound odd but it is tweakable enough for certain uses.

I'll post some audio/video in a few days. I've got a hectic start to the week but then a little free time.
Cheers
I could never get the noise floor low enough, it was either really noisy or really distorted. But, I was trying to be "creative"... I was likely being an idiot :lol: I'll probably give it another go at some point, but I'll use tried and true designs.
If you have to ask, you can't afford the answer

knockman
KVRAF
1840 posts since 21 Feb, 2004 from somewhere! anywhere!

Re: Pictures of your builds!

Post Wed Nov 22, 2017 11:30 pm

Here's a quick video to show how it can sound:
https://www.youtube.com/watch?v=m2BpxBO ... e=youtu.be
Cheers

User avatar
Hink
Rad Grandad
28860 posts since 6 Sep, 2003 from Downeast Maine

Re: Pictures of your builds!

Post Fri Nov 24, 2017 9:26 am

that's awesome knockman :tu:
Albert Einstein may have been a genius but his brother Frank was a monster

knockman
KVRAF
1840 posts since 21 Feb, 2004 from somewhere! anywhere!

Re: Pictures of your builds!

Post Fri Nov 24, 2017 5:03 pm

Hink wrote:that's awesome knockman :tu:
Thanks Hink :) Listening again, I wish I'd focused more on playing the guitar better. I knew it was sloppy when I was videoing it but now I find it shocking!

Oh well...next time

AAX-VST
KVRer
6 posts since 24 Dec, 2017

Re: Pictures of your builds!

Post Sun Dec 24, 2017 2:48 am

Spring tank idea thing is great!. - no pedals to-date offer such true to life fenderish springs. - always way too digital!.

..Watching...

User avatar
antto
KVRAF
2508 posts since 4 Sep, 2006 from 127.0.0.1

Re: Pictures of your builds!

Post Wed Dec 27, 2017 4:48 am

Image

first prototype, midi/dinsync/uart over analog(ue) audio
made via experiments in falstad's circuit simulator, with huge help from the guys at ##music-electronics @ irc.freenode.net
designed in KiCad
It doesn't matter how it sounds..
..as long as it has BASS and it's LOUD!

irc.freenode.net >>> #kvr

knockman
KVRAF
1840 posts since 21 Feb, 2004 from somewhere! anywhere!

Re: Pictures of your builds!

Post Sun Feb 04, 2018 5:56 am

Here's my build of the O2 Minipops, Jan Ostman's Arduino drum machine based on the Korg MiniPops7
Image

I attempted trying to create a a way of having 16 indent positions on a standard potentiometer but ultimately it proved unreliable - lack of true linearity meant patterns weren't properly selected at the farthest throws of the pot.
Image
Scrapped that idea and went for a 12 position rotary switch and a series of resistors instead. Meant losing 4 patterns, but I can get by without Hard Rock, Slow Rock, Swing, and Jazz Rock, and I'll probably have a go at putting some of my own patterns in there once I've gotten tired of the current selection.

MIDI clock and Sync out options included:
Image

Jan's code: https://janostman.wordpress.com/the-o2-source-code/

And a video
https://www.youtube.com/watch?v=uqyjSA_4SuY

User avatar
justin3am
KVRAF
10786 posts since 7 May, 2006 from Southern California

Re: Pictures of your builds!

Post Sun Feb 04, 2018 8:58 pm

Great work. The spring reverbs are awesome too!

Return to “DIY: Build it and they will come”