Lovepedal - Les Lius  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
3PDT
Information
Posts: 19
Joined: 30 Dec 2007, 21:36
Has thanked: 1 time
Been thanked: 1 time

Post by 3PDT »

Picked this guy up and figured I'd post the guts. Got a new camera and the macro works really well. I was happy with the results. If anyone wants the original i.e. LARGER pictures, just lemme know, I'll send them to you directly. Also, if you'd like pictures from alternate angles or part values please just hollar.

You may notice an empty connector, it's for the battery. The battery connects to the board just like the switches. Funny thing is, the switching isn't really silent. I can hear a little click when they engage. Enjoy

Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
Image

User avatar
culturejam
Old Solderhand
Information
Posts: 4297
Joined: 24 Feb 2008, 05:59
Has thanked: 451 times
Been thanked: 553 times

Post by culturejam »

Well done, sir. Well done.

:applause:

kurtlives
Solder Soldier
Information
Posts: 175
Joined: 20 Jan 2008, 02:18
Location: Toronto, Canada.
Been thanked: 3 times

Post by kurtlives »

Nothing says bow tweek like SMD! :x

User avatar
Greg
Old Solderhand
Information
Posts: 3319
Joined: 03 Nov 2007, 09:35
my favorite amplifier: Tophat Emplexador & Supreme 16.
Completed builds: LOTS..
Location: Australia
Has thanked: 68 times
Been thanked: 158 times

Post by Greg »

kurtlives wrote:Nothing says bow tweek like SMD! :x
In this case, nothing says built elsewhere by other people, than the way it's built and the components.
culturejam wrote: We are equal opportunity exposure artists.

ChrisFFTA
Breadboard Brother
Information
Posts: 103
Joined: 30 Dec 2007, 07:43
Been thanked: 3 times

Post by ChrisFFTA »

Greg_G wrote:
kurtlives wrote:Nothing says bow tweek like SMD! :x
In this case, nothing says built elsewhere by other people, than the way it's built and the components.
Sorry I am a little slow on the uptake... what do you mean?

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 401
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 2 times
Been thanked: 87 times
Contact:

Post by Jack Deville »

12F675...

relay switching....

this is my first post here. so i'll keep it short.

this design is very intriguing....

lovepedal? :secret:
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

User avatar
Greg
Old Solderhand
Information
Posts: 3319
Joined: 03 Nov 2007, 09:35
my favorite amplifier: Tophat Emplexador & Supreme 16.
Completed builds: LOTS..
Location: Australia
Has thanked: 68 times
Been thanked: 158 times

Post by Greg »

ChrisFFTA wrote:
Greg_G wrote:
kurtlives wrote:Nothing says bow tweek like SMD! :x
In this case, nothing says built elsewhere by other people, than the way it's built and the components.
Sorry I am a little slow on the uptake... what do you mean?
I mean the boards aren't done by Mr LP.. they're outsourced.
culturejam wrote: We are equal opportunity exposure artists.

User avatar
soulsonic
Old Solderhand
Information
Posts: 3813
Joined: 27 Jun 2007, 03:38
my favorite amplifier: Stopped using amps mostly...
Completed builds: too many!
Location: Homer, NY
Has thanked: 125 times
Been thanked: 330 times
Contact:

Post by soulsonic »

My first guess is a single transistor boost with clipping diodes. The switch changes between different diodes. Everything else is for controlling the relay.
"Analog electronics in music is dead. Analog effects pedal design is a dead art." - Fran

User avatar
culturejam
Old Solderhand
Information
Posts: 4297
Joined: 24 Feb 2008, 05:59
Has thanked: 451 times
Been thanked: 553 times

Post by culturejam »

soulsonic wrote:Everything else is for controlling the relay.
Damn. That seems like an awful lot of components just for switching. Why the hell would you make a bypass switch so complex? If your guess is correct, then the switching is about 5x the complexity of the effect part of the circuit.

:scratch:

MoreCowbell
Transistor Tuner
Information
Posts: 1105
Joined: 06 Aug 2007, 14:39
Been thanked: 11 times
Contact:

Post by MoreCowbell »

soulsonic wrote:My first guess is a single transistor boost with clipping diodes. The switch changes between different diodes. Everything else is for controlling the relay.
SMD Electra-like circuit. That was my guess as well, would be funny if that were indeed the case.


Should be able to compare the switching to Cusacks pedals. IIRC, Cusack designed the switching for Sean.

I could certainly be wrong about everything in my post though ! :lol:

reveriesof
Information
Posts: 30
Joined: 15 Apr 2009, 05:05
Been thanked: 3 times

Post by reveriesof »

ive always assumed it's the woodrow/electra mod w/ a diode switch, cos it's sposed to be a "5E3" aye?

RnFR
Old Solderhand
Information
Posts: 5139
Joined: 09 Jan 2008, 06:02
my favorite amplifier: Traynor YBA-III, Fender Super Six
Completed builds: custom fuzz.
Location: Inner Earth
Has thanked: 141 times
Been thanked: 138 times
Contact:

Post by RnFR »

reveriesof wrote:ive always assumed it's the woodrow/electra mod w/ a diode switch, cos it's sposed to be a "5E3" aye?
no, it's supposed to be a supro. :roll: :lol:
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic

Blog-APOCALYPSE AUDIO

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 401
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 2 times
Been thanked: 87 times
Contact:

Post by Jack Deville »

3PDT:

how loud is the click when the effect is engaged? is it from the relay only, or is it audible through the amp?
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

roseblood11
Tube Twister
Information
Posts: 1873
Joined: 23 Aug 2008, 14:21
Has thanked: 348 times
Been thanked: 297 times

Post by roseblood11 »

Aren´t all Lovepedals "Electra like circuits"?
Except for that famous one, which is a son-of-a-screamer like circuit... :roll:

ampjunkie
Information
Posts: 5
Joined: 03 Dec 2007, 11:55
Been thanked: 1 time

Post by ampjunkie »

The relay circuit by Cusack is pretty small. Does anybody know if he does the layouts as well? I doubt Sean does much these days except count the money flowing in. :mrgreen:

cbriere
Breadboard Brother
Information
Posts: 132
Joined: 24 Aug 2007, 12:30
Location: québec, canada
Has thanked: 1 time
Been thanked: 9 times
Contact:

Post by cbriere »

3PDT, do you got a chance to trace it? i think i'm not alone curious to see this circuit :roll:

User avatar
culturejam
Old Solderhand
Information
Posts: 4297
Joined: 24 Feb 2008, 05:59
Has thanked: 451 times
Been thanked: 553 times

Post by culturejam »

cbriere wrote:3PDT, do you got a chance to trace it? i think i'm not alone curious to see this circuit :roll:
Negative. If he had traced it, it would be in this thread.

WhiteKeyHole
Cap Cooler
Information
Posts: 552
Joined: 05 Apr 2008, 04:38
Has thanked: 31 times
Been thanked: 216 times

Post by WhiteKeyHole »

It's a Woodrow with switchable diodes. Looks like only one half of the pair is switched. Can't decipher the boost function at a quick glance, but looks like it might switch from a fixed gain setting to a variable control.

WhiteKeyHole
Cap Cooler
Information
Posts: 552
Joined: 05 Apr 2008, 04:38
Has thanked: 31 times
Been thanked: 216 times

Post by WhiteKeyHole »

OK, this is only speculation based on what I see;

Even though the ad copy suggests that the boost activates a cascaded gain stage, I do not see the second transistor (setup) that would make this true.

What I do see is Q1 acting as, what I assume, is a VVR in series with VR4, both in parallel with the Q20's emitter resistor (330R). When the JFET's resistance is high (assume 1Meg with boost off), the affect on the 330R is very little, but when it is low (assume 1R with boost on), VR4's (variable resistor) value of 1R to 1K in parallel with the 330R increases the gain of Q20 by dropping the resistance.

Maybe?

WhiteKeyHole
Cap Cooler
Information
Posts: 552
Joined: 05 Apr 2008, 04:38
Has thanked: 31 times
Been thanked: 216 times

Post by WhiteKeyHole »

WhiteKeyHole wrote:Looks like only one half of the pair is switched.
Wrong, sorry. A BAT46 pair in the 5E3 position, a BAV99 in the Tweed Twin position. In the Tchula position, a single BAT46 is put in parallel with the BAV99, for asymmetrical clipping.

Now you can build one.

Post Reply