Arion SHC-Z mod to SCH-1 ?

[clapointe]

Has anybody tried modding the Arion SCH-Z to SCH-1 ? I notice both of the have the same BBD chips. (Mark don't kill me!)

[grolschie]

I read somewhere that they both sound pretty much the same. I have just aquired a SCH-1, and while it does a nice Leslie type sound, it's way too flanger-like when I kick on the distortion.

[clapointe]

I read somewhere that they both sound pretty much the same. I have just aquired a SCH-1, and while it does a nice Leslie type sound, it's way too flanger-like when I kick on the distortion.

I own both the SCH-1 and the SCH-Z and at slow speeds there pretty close but when you speed up things to get that leslie thing the SCH-1 smokes the SCH-Z ! It's speeds are faster and it's way more organic !

[grolschie]

I own both the SCH-1 and the SCH-Z and at slow speeds there pretty close but when you speed up things to get that leslie thing the SCH-1 smokes the SCH-Z ! It's speeds are faster and it's way more organic !

Do both your pedals become flanger-esque when kicking in the distortion at lower speeds?

[Mark Hammer]

If we can score the schems for each, it would be easy to figure out how to make the one sound more like the other.

Incidentally, there may well be NO difference in the *intended* speed range of the two units, even though you note some differences in upper speeds. The caps, pot, and fixed resistors used to set the slowest-to-fastest range all have their tolerances. Five percent here, and 10% there can yield some noticeable differences in speed range sometimes.

The same tolerance differences can also be true of the filter caps. Almost all BBD-based effects need some lowpass filtering before and after the BBD to eliminate clock noise and aliasing. The caps used to accomplish that task are also subject to tolerances which can impact how much of the critical treble that may be responsible for the grind you like so much has been removed or left in.

I'm not saying the two units are identical, since I don,t have the schems in front of me. However, it CAN be the case that differences between *one* example of one model, and another single example of a later/earlier version of the same product, are not a result of design changes, but of normal expected variation between and within components. That stuff happens, which is why hotshot bigname musicians still comb the 2nd hand and vintage places, because every now and then you get lucky and find a piece that has that magic combination of *actual* component values (despite having the same value-code on the parts as another less inspiring unit) that sounds amazing.