News:

Forum may be experiencing issues.

Main Menu

Modifying a CM Greg Howe Lick Box to switch like a CM Plexitone (old version)

Started by andyg_prs, September 05, 2023, 03:04:31 PM

Previous topic - Next topic

andyg_prs

Hi,

I have the old 2 channel plexitone but the lack of volume and tone controls meant I stopped using it for years.  I just got a CM Greg Howe Lick Box which seems like a version of the old Plexitone but with individual volume and tone controls per channel.

However, a major problem is the switching.  On the Plexitone there was a select button in the middle which allowed you to toggle between the Crunch and High Gain channels.  On the Lick Box, you can select all or any channels, so to switch between the two, say Crunch is on, you have to hit the Crunch and High Gain buttons at the same time.  This is awkward and can lead to you kicking the pots.

Does anyone know how I might modify the Lick Box to switch like the old Plexitone?  I can see schematics for the Plexitone, but not one for the Lick Box...

Two other things.  The Boost is way over the top.  If you move the pot clockwise a few degrees from all the way off to a little on, it's really loud....past 8 o' clock and it's unusable.  Would it be as simple as changing the value of the pot to have a more usable range?

Third and final, on the crunch channel, at low gain, it's too dark.  So I have the tone pot all the way to the right.  Is there anything I can do to brighten up the channel?

But the key thing is the switching!

Thanks,
Andy

andyg_prs

PS - I have both pedals open in front of me now - the Lick Box was much harder to get into an apepars to have more going on.....potentially high res pics etc could be interesting to someone in exchange for some instructions on achieving what I'm looking for?

jwin615

1)don't know
2)yeap, probably. Put one in that 4x the value and see. Solder lightly. Adjust to taste.
3)need to find the cap that's between ground and the pot.  Probably on the wipe(center lug). If you find it, decrease it's value by .33-.25 or so. Solder lightly. Adjust to taste.
Alternatively, decrease the pot value.
Can test with alligator clips and parallel resistance to the pot. Use a resistor calculator to start dropping the total value.

To add, without a schematic, this is somewhat hypothetical. But won't break anything as long as your desoldering doesn't.

andyg_prs

Thanks, and apologies, I hadn't found the notification settings for this post to see I have replies.  I now have....

I don't know how to provide the schematic, and I guess these photos don't help much....if they, are any others would please let me know....

Plexitone innerds:



Lick Box innerds:



Thanks,
Andy