Tremulus Lune mods

Started by Mick Bailey, June 12, 2006, 04:26:00 PM

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Mick Bailey

Thought I'd share some mods I've made to my recently-built Tremulus Lune;

Firstly, I highly recommend the ramp-up ramp-down mod, though for this to work effectively you need to be able to slow down the LFO more than the original design allows. Do this by replacing the stock "Speed" 10k pot with a 47k pot. This will also give you a vastly improved slow speed for the normal setting (ramp switch in the centre position). It also allows you to fully explore the spacing control.

Also, the "fine" control has an almost imperceptible effect on the speed. To correct this, replace the 1k stock pot with a 4.7k pot. This still gives the 10:1 ratio between the two controls, but each has a greater range to further extend the usable range of this pedal.

I also recommend that you include a pot for the gain control, rather than a trimpot on the PCB. I used a 4.7k pot in the end, after experimenting with values. This gives a useful, but not extreme, gain boost when on maximum and allows you to balance the effected and bypassed sounds easily.

This is the finest pedal I've ever owned, even better for being home-brewed. The range of effects is astonishing, given the relative simplicity of the design. What I find is that with the depth turned right down it lends a quality to the guitar tone that I've only previously obtained through recording. There's some sparkle that makes the true-bypassed sound seem dull and lifeless. If you think that tremelo is a bit boring, think again! This pedal will awaken your playing and give you plenty of knobs to twiddle. Can't recommend this too highly.


blanik

i'm thinking about building this one (with the tonepad pcb) but i'd like to know if it can go all the way to chopper effect? (sharp on/off effect)

R.

Processaurus

Cool, if you also like it as a pre-amp, when its not tremming, you could rewire the bypass switch to disconnect the LFO from the LED anode in the LED/LDR combo and switch it to a suitable resistor to the v+ (suitable being whatever value lights up the LED enough to give you unity gain, a trimpot might be the easiest).  Then hard wire the ins and outs, so your guitar is always going through the circuit.  The lovetone wobulator does this for the bypass, apparently.  A very easy (but backwards) way to get the tone of the trem to match the bypassed signal...

$uperpuma

yeah it works great as a boost, when the trem isn't working.... I built mine with the tonepad board and it chops up pretty nicely,  I really like this trem... I'm about to build another with all the add-ons...and every buddy of mine that plays it seems to want one configuration or another...
Breadboards are as invaluable as underwear - and also need changed... -R.G.

tiges_ tendres

I'm not sure if this mod is covered elsewhere, but I discovered on the dual speed controls, if you touch the lugs together on the pots, you can make it go fast!  I put in a switch so I could turn this mod on and off.



Try a little tenderness.

$uperpuma

The buddy of mine that wants me to build it for him wants the speed doubler on a momentary switch...for flairs
Breadboards are as invaluable as underwear - and also need changed... -R.G.

Mick Bailey

Quote from: blanik on June 12, 2006, 05:09:07 PM
i'm thinking about building this one (with the tonepad pcb) but i'd like to know if it can go all the way to chopper effect? (sharp on/off effect)

R.

Mine does, and performs really well with totally silent gaps between the chops. I think the ability to do the chopper effect depends on the reaction time of your LED/LDR combination. I used the Silonex NSL-32 integrated device (purchased from Banzai in Germany - I'm in the UK) which solders directly into the PCB layout I used from Fuzz Central. This responds really quickly to the modulation from the LFO. If you trust to chance with a randomly selected LDR you may not get the rapid response necessary to get the steep rise/fall to get the effect you're looking for.

I would consider adding another foot switch to the design to better exploit the chopper effect: Wire up the bypass switch, but place another momentary switch in parallel to get an instantaneous on/off for the effect when the main switch is on bypass. I don't have room for this with my build, but intend to make another with this mod.

Jonathon Stevens

The saw up/down mod is great, i just added it to my breadboarded lune.

I've also added a 4017 based sequencer with a 555 as the clock.  So far it's only breadboarded but it all works great.  I've also added a switch to modulate the 555's speed with the lfo from the Lune, making for some odd timing changes on the sequencer, usefull... not sure.

Thomas3D

Quote from: $uperpuma on June 12, 2006, 11:45:10 PM
The buddy of mine that wants me to build it for him wants the speed doubler on a momentary switch...for flairs


Care to share how one would do that?

dorrisant

I'm curious as to what mod this may be... the big knob on the side... ?

http://www.youtube.com/watch?v=j74wKXX-gRY

Anyone know where to find this mod?

Tony

.Mike

Quote from: dorrisant on May 18, 2012, 12:24:56 PM
I'm curious as to what mod this may be... the big knob on the side... ?

http://www.youtube.com/watch?v=j74wKXX-gRY

Anyone know where to find this mod?

Youtube comments indicate it is the speed knob mounted on the side. No mod necessary.

If you're not doing it for yourself, it's not DIY. ;)

My effects site: Just one more build... | My website: America's Debate.

will lee

Hey! I have a dual tremulus lune and i wonder if it would fry the input caps if given 18vdc. Has anyone tried? Read somewhere that most input caps used for 9v pedals allow 16v max. In case it's over it's threshold, just changing it to a bigger value would do it? Or would i be messing with the circuit in some way? If it would i guess i could just run it with 12v, or maybe 16v if i find the perfect power supply

bluebunny

Quote from: will lee on December 14, 2016, 01:00:54 AM
Read somewhere that most input caps used for 9v pedals allow 16v max.

Hmmm...  Not sure about "most".  Just take a look at the caps in your pedal: the voltage rating is written on the side.  Don't exceed this value.  Indeed, running 16V caps at 16V is not a great idea either.  You usually aim to overrate.  (Having said that, most caps in a circuit aren't going to have the full power supply across them, but let's not get into rating each individual cap!)

And welcome, btw.   :)
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