Arion - SCH-Z Stereo Chorus

Dirk_Hendrik · Post by **Dirk_Hendrik** » 15 Feb 2012, 18:30

What you describe is not normal for a Z. They're pretty quiet.

Sure you don't have a lot of overdrive/distortion after your Z?

Adji · Post by **Adji** » 15 Feb 2012, 18:34

Dirk_Hendrik wrote:What you describe is not normal for a Z. They're pretty quiet.

Sure you don't have a lot of overdrive/distortion after your Z?

Hey man, tried the pedal straight into amp, the problem was the same, tried different power cables and sources etc. If you roll the tone knob all the way up the problem goes a way a little, the further towards the bass end the worse the problem is.

Adji · Post by **Adji** » 17 Feb 2012, 15:42

Adji wrote:
Dirk_Hendrik wrote:What you describe is not normal for a Z. They're pretty quiet.

Sure you don't have a lot of overdrive/distortion after your Z?
Hey man, tried the pedal straight into amp, the problem was the same, tried different power cables and sources etc. If you roll the tone knob all the way up the problem goes a way a little, the further towards the bass end the worse the problem is.

Sorry to pester, but does anyone have any ideas? I've used my (very small) amount of knowledge and I'm stumped.

giannyx · Post by **giannyx** » 22 May 2012, 16:10

Sorry guys, is there a layout of this pedal?
Unfortunatly i'm still a beginner, and i like reading so much all yours replies, but i don't understand so much with only the schematic on my hand...

And i'd like to build this pedal...

Thanks a lot.

milkyBK370 · Post by **milkyBK370** » 25 Sep 2012, 19:29

HI, I picked up one of these pedals on eBay and I'm fairly new to the world of pedal modding. A previous post in this thread details the mod for true bypass while retaining the stereo function. I'm not interested in using the stereo option so could someone please explain, in simple terms, how I should go about modding this pedal for true bypass?

milkyBK370

Audiowonderland · Post by **Audiowonderland** » 26 Sep 2012, 19:01

I had one of these in the 80's. I was mocked mercilessly for having that "junk" on my pedal board. I thought it sounded great and kept it for a long time. To see it getting its due all of these years later is pretty sweet

Dirk_Hendrik · Post by **Dirk_Hendrik** » 26 Sep 2012, 19:54

Audiowonderland wrote:I had one of these in the 80's. I was mocked mercilessly for having that "junk" on my pedal board. I thought it sounded great and kept it for a long time. To see it getting its due all of these years later is pretty sweet

You had either an SCH-1 of an SFC-1 (the Fat Chorus). In the 80's there was no "Z". That was a reissue (of the Fat Chorus) that was being sold through stores like Amazon some 8 years ago for 25 dollars. Yes they sound great and yes, it's sweet that it gets the credits it deserves. I fully agree with that. However, if it weren't for Mike Landau it would still be considered junk.

Audiowonderland · Post by **Audiowonderland** » 26 Sep 2012, 20:07

Dirk_Hendrik wrote:
Audiowonderland wrote:I had one of these in the 80's. I was mocked mercilessly for having that "junk" on my pedal board. I thought it sounded great and kept it for a long time. To see it getting its due all of these years later is pretty sweet
You had either an SCH-1 of an SFC-1 (the Fat Chorus). In the 80's there was no "Z". That was a reissue (of the Fat Chorus) that was being sold through stores like Amazon some 8 years ago for 25 dollars. Yes they sound great and yes, it's sweet that it gets the credits it deserves. I fully agree with that. However, if it weren't for Mike Landau it would still be considered junk.

It was the SCH-1. My bad on that.

atreidesheir · Post by **atreidesheir** » 26 Sep 2012, 22:18

I have owned two SCH-1 pedals and sold both. I regret both. I tried the SCH-Z and thought it sounded terrible. I need to try again if they are the same. thank you everyone for the info.
Dirk, thanks for keeping me up to date on some lesser known good pedals.

TheWhisperer · Post by **TheWhisperer** » 20 Oct 2012, 17:38

candletears7 wrote:Ok, quick update.
The unity gain mod is easy peasy. That resistor I mentioned is correct. Just swap it for a trimpot.
Truebypassing it was a snap too. I just ran continuity from the in and out jack tips, lifted the next components on the schematic out to break the connection, then remade either connection via the 3pdt stomp. Voila.
A pulsing LED wants 9v at the power source with ground on the rate pot. But this means that it won't switch off as it nothing to do with the stomp. I'll have to check that out some more.
Dirk, from your post I'm going to try a 1M pulldown resistor in parallel with that diode. Thanks again.

Thanks for the information!
How can i keep the pedal "always on" when doing the 3PDT true bypass?

Dirk_Hendrik · Post by **Dirk_Hendrik** » 21 Oct 2012, 17:45

By taking out the FEt's that switch the wet signal to the mixer amplifier and replacing the source-drain connection with a jumper wire.

atreidesheir · Post by **atreidesheir** » 22 Oct 2012, 22:44

I read on a random site weeks ago the rocktek line of pedals was built by arion and clones their pedals. I have to say the knobs look the same.

anyone know anything about it?

JimiB · Post by **JimiB** » 02 Jan 2013, 18:14

"How can i keep the pedal "always on" when doing the 3PDT true bypass?"

"By taking out the FEt's that switch the wet signal to the mixer amplifier and replacing the source-drain connection with a jumper wire."

pulling Q4 and Q7 and tie U1A pin 1 to R33 and R27 correct?

Also couldnt we use a 4PDT to true bypass, maintain stereo, and get pulsing LED?

carranen · Post by **carranen** » 13 Apr 2013, 23:11

old post but may be usefull!

carranen · Post by **carranen** » 15 Apr 2013, 21:00

kind of retro-convert to SCH-1 (see up there)...

rudeez · Post by **rudeez** » 11 May 2013, 21:01

I know this is an old thread but im really stuck here..
I'm trying to include the mentioned mods like TB switching and the vibe mod.
I guess noone would be interested in describing a bit more detailed what i should do?
The earlier descrition makes me a bit confused of which side of the resistors etc that should be lifted and how they would need to be connected again.
Also where to grab the in/out from to the 3PDT switch and where on the jacks i should grab the in/out from on the box.
Does anyone have pics of their mods where i can see whats going on and has been done?

Mrdorbe · Post by **Mrdorbe** » 05 Jan 2014, 14:44

Very nice thanks to all of you I modded the effect and its working great.

My question is: does anyone know what values I have to change to get closer to the sound of the vertex mod?
Thank you

jazztastic · Post by **jazztastic** » 16 Jul 2014, 13:06

Anyone know if you can do a true bypass mod on an SCH-Z in mono only with a DPDT(2pdt) footswitch?

vmazz45 · Post by **vmazz45** » 31 Aug 2014, 22:41

Did the vibe mod per Dirks directions previous in this thread. Working on doing the 3pdt TB. Also put a trimpot in place of r30 to level the output. One thing I noticed when in the vibe mode the output is much lower , I assume its because of the absence of the dry signal which is present in the regular chorus mode. I was curious what the modified schematic was on this 3rd page of the thread. Is it a tone control change with TB as I see the BBD is removed?

vmazz45 · Post by **vmazz45** » 01 Sep 2014, 00:47

I posted this in the Modern Effects area then I saw the post about not asking for help in that section so I figured I might get more input here...."Did the vibe mod per Dirks directions previous in this thread. https://www.freestompboxes.org/viewtopic.php?f=1&t=7249 Working on doing the 3pdt TB. Also put a trimpot in place of r30 to level the output. One thing I noticed when in the vibe mode the output is much lower , I assume its because of the absence of the dry signal which is present in the regular chorus mode. I was curious what the modified schematic was on this 3rd page of the thread. Is it a tone control change with TB as I see the BBD is removed?

"

Arion - SCH-Z Stereo Chorus [schematic]