EHX - Mini Q-Tron [schematic]
- modman
- a d m i n
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click for a larger pic
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- Bernardduur
- Transistor Tuner
I've already traced that unit
Will search
Will search
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
- Dirk_Hendrik
- Old Solderhand
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Don't bother. It's in the big EH archive that was to fe found online untill the Ork came by.
As said, PM me with a mailadress if you need something from that archive.
As said, PM me with a mailadress if you need something from that archive.
- bajaman
- Old Solderhand
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I had one in for servicing recently - took some high res pictures of the solder side etc. - anyone want to build one - I have the artwork almost cloned - 75% done.
bajaman
![Laughing :lol:](./images/smilies/icon_lol.gif)
![Wink :wink:](./images/smilies/icon_wink.gif)
bajaman
- Bernardduur
- Transistor Tuner
K, I won't post itDirk_Hendrik wrote:Don't bother. It's in the big EH archive that was to fe found online untill the Ork came by.
As said, PM me with a mailadress if you need something from that archive.
![Smile :)](./images/smilies/icon_smile.gif)
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
- lohstah
- Solder Soldier
i borrowed a very early unit from my music store when they had just come out and it had the hp and lp the wrong way round, so hp was really lp and vice versa. is it still that way ?
cheers,
lohstah
cheers,
lohstah
- Bernardduur
- Transistor Tuner
No; all units I had in were in the right orderlohstah wrote:i borrowed a very early unit from my music store when they had just come out and it had the hp and lp the wrong way round, so hp was really lp and vice versa. is it still that way ?
cheers,
lohstah
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
- modman
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Thanks guys!
I got it in a trade for a DIY TS. Just took these pics as I had to dissemble it anyway. I'll show you why:
![Image](https://i20.photobucket.com/albums/b230/zjokka/EH%20MiniQtron/th_DSCN0019.jpg)
After a trip on acetone yesternight, I got it back to this now:
![Image](https://i20.photobucket.com/albums/b230/zjokka/EH%20MiniQtron/th_DSCN0030.jpg)
Also put the knobs in some acetone -- they didn't take it so well, they started dissolving.
With regard to the EH archive, Meanderthal did us a favour in the POG thread. Everybody could contribute by taking the zip and uploading it to different free hosting services. Or maybe we should find some Japanese free upload site, perhaps it'll last longer when hosted there.
The Qtron (not micro or mini Qtron) schematic in that collection shows 4558 opamps where mine has TLC2262CP, and gets fed 18V to pin 87 of the first IC. Mine just runs off 9V
Baja, you must be clairvoyant!
I got it in a trade for a DIY TS. Just took these pics as I had to dissemble it anyway. I'll show you why:
![Image](https://i20.photobucket.com/albums/b230/zjokka/EH%20MiniQtron/th_DSCN0019.jpg)
After a trip on acetone yesternight, I got it back to this now:
![Image](https://i20.photobucket.com/albums/b230/zjokka/EH%20MiniQtron/th_DSCN0030.jpg)
Also put the knobs in some acetone -- they didn't take it so well, they started dissolving.
![Slap :slap:](./images/smilies/mw_slap.gif)
With regard to the EH archive, Meanderthal did us a favour in the POG thread. Everybody could contribute by taking the zip and uploading it to different free hosting services. Or maybe we should find some Japanese free upload site, perhaps it'll last longer when hosted there.
The Qtron (not micro or mini Qtron) schematic in that collection shows 4558 opamps where mine has TLC2262CP, and gets fed 18V to pin 87 of the first IC. Mine just runs off 9V
bajaman wrote:I had one in for servicing recently - took some high res pictures of the solder side etc. - anyone want to build one - I have the artwork almost cloned - 75% done.![]()
![]()
bajaman
![Shocked :shock:](./images/smilies/icon_eek.gif)
![Very Happy :D](./images/smilies/icon_biggrin.gif)
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- bajaman
- Old Solderhand
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Okay Modman - as you already have the enclosure and we all have the mini Qtron schematic, I will have the artwork completed for the coming weekend
cheers
bajaman
![Wink :wink:](./images/smilies/icon_wink.gif)
cheers
bajaman
- modman
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Bajaman, there is no hurry at all, just let me know when you get round to it. I should first try how it sounds *without the artwork*
Being a funk junk, I cannot see how I could ever do without this pedal.
![Very Happy :D](./images/smilies/icon_biggrin.gif)
Being a funk junk, I cannot see how I could ever do without this pedal.
Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal
- bajaman
- Old Solderhand
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As promised
Electro-Hysterix miniQtron PCB
Electro-Hysterix miniQtron layout and connection notes
enjoy
bajaman
![Wink :wink:](./images/smilies/icon_wink.gif)
Electro-Hysterix miniQtron PCB
Electro-Hysterix miniQtron layout and connection notes
enjoy
bajaman
- polarbearfx
- Resistor Ronker
Is this thing worth building? I love the bigger qtron. Some of the components look pretty hard to find. I guess a diy version might be hip.
- modman
- a d m i n
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Great stuff, Baja, incredible. Do you know of any available verified MiniQtron schematics? Have been searching but didn't find any. If we do, this could go into the projects folder.bajaman wrote:As promised![]()
Electro-Hysterix miniQtron PCB
Electro-Hysterix miniQtron layout and connection notes
enjoy
bajaman
thanks!
Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal
- bajaman
- Old Solderhand
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- Posts: 4549
- Joined: 26 Jun 2007, 21:18
- Location: New Brighton, Christchurch, NZ
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Hi modman
i have the factory schematic - it was in the archive that AG discovered - let me know if you have not got it and i will email it to you
cheers
bajaman
i have the factory schematic - it was in the archive that AG discovered - let me know if you have not got it and i will email it to you
cheers
bajaman
- floris
- Cap Cooler
Sorry to bother you but I'm looking for schematics of the EH mini QTron (perhaps also a regular QTron if you have it).
I've looked for it on freestompboxes, diystompboxes and some googling but can not find it.
I have a mini QTron and want to add a control to adjust the attack of the envelope follower section.
I did find and download some PCB and Layout from bajaman, thanks!
I saw some reference to a site containing all factory EH schematics but that one is down, probably just too good to be true. Can somebody post, host that zip file containing all those schematics? Would be much appreciated.
Floris.
I've looked for it on freestompboxes, diystompboxes and some googling but can not find it.
I have a mini QTron and want to add a control to adjust the attack of the envelope follower section.
I did find and download some PCB and Layout from bajaman, thanks!
I saw some reference to a site containing all factory EH schematics but that one is down, probably just too good to be true. Can somebody post, host that zip file containing all those schematics? Would be much appreciated.
Floris.
- floris
- Cap Cooler
The file has been removed!
"An error has occured:
This file has been deleted.
Reason: THIS FILE IS FORBIDDEN TO BE SHARED! Complaints received."
Can somebody re-post / re-host it please?
Flo.
![Crying or Very sad :cry:](./images/smilies/icon_cry.gif)
"An error has occured:
This file has been deleted.
Reason: THIS FILE IS FORBIDDEN TO BE SHARED! Complaints received."
Can somebody re-post / re-host it please?
Flo.