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 Forum index » DIY Hardware and Software » Circuit Bending
correcting left/right channel bleed in the korg er-1
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oootini



Joined: Oct 15, 2007
Posts: 80
Location: ireland

PostPosted: Mon Feb 15, 2010 4:10 am    Post subject:  correcting left/right channel bleed in the korg er-1
Subject description: circuit "un"bending?
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hi,
I have a korg er-1 drum machine. it's a really fun little machine but lately i've been getting annoyed that there is a fairly significant amount of bleed between the left and right channels.

The only way i can eliminate the bleed is to gate each channel, which obviously isn't a great option.

would anybody have an idea on how this might be corrected? would it be a case of putting 2 diodes (or something similar) across the channels output lines to prevent leakage from left to right and vica versa?

i should say that from what i've read online, this seems to be a problem with all the 1st gen electribes.
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opg



Joined: Mar 29, 2004
Posts: 954
Location: Berkeley, CA, US
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PostPosted: Mon Feb 15, 2010 11:45 am    Post subject: Reply with quote  Mark this post and the followings unread

Are you using the delay effect, or is it simply that one part that you have, say, fully panned right is bleeding into the left?
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oootini



Joined: Oct 15, 2007
Posts: 80
Location: ireland

PostPosted: Mon Feb 15, 2010 3:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

opg wrote:
Are you using the delay effect, or is it simply that one part that you have, say, fully panned right is bleeding into the left?


dry fully panned right is bleeding into left, and vica versa...
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opg



Joined: Mar 29, 2004
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PostPosted: Mon Feb 15, 2010 4:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Are they exactly the same volume level? That is, is the volume of the left equally as loud as its bleed-though on the right? I think you're right about the 1st gen versions. I'm not sure what mine is, but it may also be 1st gen.
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oootini



Joined: Oct 15, 2007
Posts: 80
Location: ireland

PostPosted: Tue Feb 16, 2010 3:00 am    Post subject: Reply with quote  Mark this post and the followings unread

no, it's usually a lot quieter. as i say, a gate on the channel will take out the bleed signal but also a good deal of the desired signal. i'm going to check it out again tonight. i may open it up too...

it's the mk I by the way, the very first one. not the mkII although i understand the same problem applies there too...
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