Kawai Q-80 (Q80) Archive & Repository

Discussions about anything analog, digital, MIDI, synth technology, techniques, theories and more.

Re: Kawai Q-80 (Q80) Archive & Repository

Postby Rasputin » Sun May 27, 2018 4:12 pm

salwa wrote:Next goal for me - to find replacement for encoder ;)


Dimensions?

Body dimension: 16mm (W) x 17.5mm (L), maybe?
Shaft diameter: 6mm, maybe?
Shaft height: ?
Total height: ?

As far as newly minted stuff easily available through Mouser goes, I'm thinking ALPS EC16B2410408 is close to correct, but need more information. Also looking at Alpha RE160F-40E3-20A-24P-003 (Mouser #318-ENC160F-24P), depending on shaft height.

Shaft height is probably the total height subtract 6.5mm, so if you measure 26.5mm from PCB to top of encoder then it's probably 20mm. If so, then the Alpha above could be correct.

If it's 31.5mm from PCB to top of encoder then probably 25mm shaft, so the ALPS above could be correct.

If the shaft height is 20mm, this ALPS model may work (don't know what part number this is though!): https://www.ebay.com/itm/Lot-2-ALPS-Rot ... SwCoBakuqi

If it's even shorter than that (21.5mm total height), I'm thinking Bourns PEC16-4215F-N0024 might work.
Rasputin
Active Member
Active Member
 
Posts: 614
Joined: Thu Jul 21, 2016 4:52 am

Re: Kawai Q-80 (Q80) Archive & Repository

Postby salwa » Mon May 28, 2018 9:09 pm

Wow, I didn't expect that - thanks for your help again.
Here it is in all its skipping glory:
Image
It's Alps 331A. Here are my measurements (unfortunately I don't have callipers, so there may be 0,5 mm uncertainity, but I hope encoders are standarized):
Diameter of base: 16 mm
Total height: 28,5 mm
Shaft height (including screw thread): 21,5 mm
Base height: 7 mm
Shaft diameter: 6 mm
Here is how it looks from inside (with main PCB in place)
Image
Casio CZ-1, Elektronika EM-25, Yamaha TX81Z, Roland JV-2080, Novation KS-rack, Korg Poly 800, Casio SK-1, Casio SK-8, Vermona E-piano, Akai S2000, Roland SP 404, Roland TR 505, Yamaha MR 10, Yamaha RX 5 and more
https://www.facebook.com/DOMmusicpl
User avatar
salwa
Active Member
Active Member
 
Posts: 325
Joined: Sun May 20, 2007 7:12 pm
Location: Gdynia, Poland

Re: Kawai Q-80 (Q80) Archive & Repository

Postby salwa » Thu Jun 07, 2018 2:03 pm

An update - I bought encoder (it was actually harder than I thought - most of them didn't have screw thread) and fitted it inside. I have ordered Alps encoder also, but I needed new one badly (for rehersal - the old one deteriorated quickly, it was last call actually), so I bought this Chinese noname. I plan to mount Alps in the end.
As you can see, new encoder is differently oriented (45 degrees turn) and have ACB terminals (original had ABC). It's rather large (I had to bend the connectors), but everything works fine.
Image
Image
Casio CZ-1, Elektronika EM-25, Yamaha TX81Z, Roland JV-2080, Novation KS-rack, Korg Poly 800, Casio SK-1, Casio SK-8, Vermona E-piano, Akai S2000, Roland SP 404, Roland TR 505, Yamaha MR 10, Yamaha RX 5 and more
https://www.facebook.com/DOMmusicpl
User avatar
salwa
Active Member
Active Member
 
Posts: 325
Joined: Sun May 20, 2007 7:12 pm
Location: Gdynia, Poland

Re: Kawai Q-80 (Q80) Archive & Repository

Postby Rasputin » Fri Jun 08, 2018 1:35 pm

salwa wrote:I plan to mount Alps in the end.


If/when you successfully get the Alps in there, please come back and do tell what the exact part number is and any special considerations, just as you've done here.

:thumbsup:
Rasputin
Active Member
Active Member
 
Posts: 614
Joined: Thu Jul 21, 2016 4:52 am

Previous

Return to General Synthesizers

Who is online

Users browsing this forum: No registered users and 18 guests