Roland A-80 aftertouch modification

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BradP
KVRist
Topic Starter
43 posts since 2 Oct, 2007

Post Mon Jan 12, 2009 1:56 pm

Can someone explain to me the mod you can do to the A-80 to make the aftertouch more usable, please. Or provide a link to somewhere that does. I havn't been able to find any info about it through google and Roland hasn't replied to my email. Thanks.

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jupiter8
KVRAF
9417 posts since 17 Sep, 2002 from Gothenburg Sweden

Post Mon Jan 12, 2009 3:56 pm

Replace 5.6k resistor R43 on Main A board with a 10k resistor.

satchy
KVRer
1 posts since 27 Nov, 2004

Post Sun Mar 06, 2011 6:52 am

BradP wrote:Can someone explain to me the mod you can do to the A-80 to make the aftertouch more usable, please. Or provide a link to somewhere that does. I havn't been able to find any info about it through google and Roland hasn't replied to my email. Thanks.
______________________________________________________________________________

I have had the same problem, and i make some tests with the resistors.
The original resistor R43 from my A80 was a 10Kohm.
It does not works. :(

You should replace the resistor R43 on Main A board with a 50k resistor.
Or a potentiometer 0-100K, with the original R43-resistor in serial.

Before you have to clean all aftertouch sensors (88) on the after touch PCB.
This is a very difficult work.

But after this work, you have a Roland A-80 with an excellent Polyphonic aftertouch.

You can it play with all your fingers from your hand. :)

I hope it will help you

prodigal_sounds
KVRist
76 posts since 17 Mar, 2008

Post Mon Aug 16, 2021 2:50 pm

For any folks out there interested, I upgraded the aftertouch on my Roland A-80. The full process is described in my blog post here:
Roland A-80 Aftertouch Upgrade

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BertKoor
KVRAF
14222 posts since 8 Mar, 2005 from Utrecht, Holland

Post Mon Aug 16, 2021 10:37 pm

prodigal_sounds wrote: Mon Aug 16, 2021 2:50 pm For any folks out there interested, I upgraded the aftertouch on my Roland A-80. The full process is described in my blog post here:
Roland A-80 Aftertouch Upgrade
Congrats! :hail:
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