Lovepedal HiVolt

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have the schematic for the lovepedal high volt but needs to

Postby Belanger88 » 07 Mar 2017, 14:06

I've got the original schematic for the love pedal hi volt which is a mu-amp cascading JFET design only problem is this is the actual love pedal schematic from sean so it needs to be re-drawn I believe if I want to share and post it which I could use a hand with

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Nocentelli (09 Mar 2017, 00:33)
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Re: have the schematic for the lovepedal high volt but needs

Postby Nocentelli » 07 Mar 2017, 19:21

https://www.expresspcb.com

..has a free schematic drawing program which is intuitive and easy to use. Or you could email me the schematic and I'll redraw it. Pm me if you're interested in the easy option
mmolteratx wrote:absolutely zero commercial use allowed. If I find anyone selling these, I'll fly to your house and kick you in the nads. And you may or may not find yourself in trouble.
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Re: have the schematic for the lovepedal high volt but needs

Postby Belanger88 » 08 Mar 2017, 00:11

sent you a PM
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Lovepedal HiVolt

Postby Nocentelli » 09 Mar 2017, 00:32

viewtopic.php?f=7&t=28214

Thanks to Belanger88 -

Hi volt schem nocentelli.png
mmolteratx wrote:absolutely zero commercial use allowed. If I find anyone selling these, I'll fly to your house and kick you in the nads. And you may or may not find yourself in trouble.

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Re: Lovepedal HiVolt

Postby Nocentelli » 11 Mar 2017, 13:07

Slight revision (connected "hot" ends of treble + middle EQ pots to last opamp inverting input, EQ pot lug numbers labelled)

Hi volt schem nocentelli.png
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mmolteratx wrote:absolutely zero commercial use allowed. If I find anyone selling these, I'll fly to your house and kick you in the nads. And you may or may not find yourself in trouble.

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Re: Lovepedal HiVolt

Postby gigelmargel » 05 Apr 2017, 21:58

Hello!

I've just finished HiVolt, using the excellent layout from Effectslayout (https://effectslayouts.blogspot.ro/2017 ... 0814985595), but it didn't work. I found that the problem comes from the power supply part, which is wrong on the schematic.
So, you must disconnect 1N4001 diode from the pin 7 of MAX1044 and connect it to pin 8 (as I saw in many others schematic).

Now it works, but not as in videos. It hasn't a tight sound. It has a muffled sound. Maybe there are other errors in the schematic? I compared the FET part with BSIAB2 and some values are very different. The most strange part for me is the 33nF+10K+3.9K filter. What is for?
The tone pots has a weak action, especially for the mids.

Thank you!

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Re: Lovepedal HiVolt

Postby Nocentelli » 05 Apr 2017, 23:07

My bad on the voltage doubler - I should have spotted that.
The EQ is weird, but pretty sure it's accurate
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mmolteratx wrote:absolutely zero commercial use allowed. If I find anyone selling these, I'll fly to your house and kick you in the nads. And you may or may not find yourself in trouble.

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Re: Lovepedal HiVolt

Postby gigelmargel » 06 Apr 2017, 13:10

Nocentelli wrote:My bad on the voltage doubler - I should have spotted that.
The EQ is weird, but pretty sure it's accurate


The 10K+3.9K seems strange because it is easier to put a very common 14K or 15K instead :)

I will make some sound tests before the filter. I biased the last FET at 8V (half of the power supply).

Anyway, maybe someone which has the pedal can recheck the values. For example, the 820K in HiVolt is only 82K in BSIAB. I don't have many electdonic knowledges...
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Re: Lovepedal HiVolt

Postby johnk » 07 Apr 2017, 23:37

i've built it twice using the posted schematic (with a corrected charge pump) and it doesn't sound anything like the original. the distortion is very ugly sounding so i think that there are a few more errors with the re-draw besides the charge pump.
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Re: Lovepedal HiVolt

Postby johnk » 11 Apr 2017, 21:01

well, Jesse sent the schematic and i checked it. the only other difference besides the charge pump issue is that the 820K resistor at the gate of the 5th Jfet is an 882K one as per Sean's schematic. other than that it matches it.
i've tried both an 820K and an 82K but to no avail. this one matches the one that Jesse sent me.
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Re: Lovepedal HiVolt

Postby gigelmargel » 12 Apr 2017, 15:49

johnk wrote:well, Jesse sent the schematic and i checked it. the only other difference besides the charge pump issue is that the 820K resistor at the gate of the 5th Jfet is an 882K one as per Sean's schematic. other than that it matches it.
i've tried both an 820K and an 82K but to no avail. this one matches the one that Jesse sent me.


After I made the link that you suggested about the pin 3 of the mid pot, mine works almost OK. The main problem is a huge noise (but, as I remeber, BSIAB is noisy by default). Moreover, the mids are a little strange, like a fixed wah :)

Thank you very much!

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Re: Lovepedal HiVolt

Postby hozy31 » 28 Apr 2017, 15:16

Hi gigelmargel, what was the link you added to lug 3 of mids pot, i can't seem to find any mention of it?
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Re: Lovepedal HiVolt

Postby gigelmargel » 29 Apr 2017, 21:09

hozy31 wrote:Hi gigelmargel, what was the link you added to lug 3 of mids pot, i can't seem to find any mention of it?


I added link in the layout from here: http://effectslayouts.blogspot.ro/2017/03/lovepedal-hi-volt.html...in the comments you can read exactly where :)

Good luck!

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Re: Lovepedal HiVolt

Postby Nocentelli » 03 May 2017, 19:51

hozy31 wrote:Hi gigelmargel, what was the link you added to lug 3 of mids pot, i can't seem to find any mention of it?


Nocentelli wrote:Post subject: Re: Lovepedal HiVolt Posted: 11 Mar 2017, 12:07

Slight revision (connected "hot" ends of treble + middle EQ pots to last opamp inverting input, EQ pot lug numbers labelled)

Hi volt schem nocentelli.png


Belanger88 wrote:...only problem is this is the actual love pedal schematic from sean
mmolteratx wrote:absolutely zero commercial use allowed. If I find anyone selling these, I'll fly to your house and kick you in the nads. And you may or may not find yourself in trouble.
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