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DPP1 (part 1) wannabe ... (the summer project)
Posted: 13 Jun 2017, 20:29
by Marlowes
Hej!
I just bidded at an auction and won. What I think is a Clavia DPP1.
So, when the parcel arrives I will know.
Meanwhile ... can anyone tell me some urban legends about this first (?) commercial product launched by Mr Nordelius et al?
It does not come with a power supply, but I think I've seen a statement about 20V DC. So I can fix that.
Also, there is not any sound cartridge included, but I'm hoping for an internal sound at least.
So exciting ... I'll tell you more over the coming weeks ...
/Vänligen
Michael in Scania
Stolen pictures:
- dpp1.jpg (305.73 KiB) Viewed 3726 times
- dpp1_.JPG (11.53 KiB) Viewed 3726 times
Re: DPP1 wannabe ... (the summer project)
Posted: 14 Jun 2017, 16:53
by Marlowes
Hej!
The DPP1 arrived today.
Inserted two 9V batteries ... it kind of started and the LED lit up ... but no sound is triggered ...
"To be continued!"
/Vänligen
Michael in Scania
My unit:
- IMG_1313.jpg (91.76 KiB) Viewed 3691 times
- IMG_1314.jpg (96.01 KiB) Viewed 3691 times
- IMG_1315.jpg (83.01 KiB) Viewed 3691 times
- IMG_1316.jpg (96.93 KiB) Viewed 3691 times
Re: DPP1 wannabe ... (the summer project)
Posted: 14 Jun 2017, 19:12
by ricard
I wonder if it doesn't need a ROM cartridge in the slot at the back to make any sound.
See picture 6 here:
https://picclick.it/clavia-ddrum-dpp1-d ... 22838.html
Re: DPP1 wannabe ... (the summer project)
Posted: 14 Jun 2017, 22:19
by Marlowes
Hej!
Hmmm ... maybe Kroffe knows?
/Vänligen
Michael in Scania
Re: DPP1 wannabe ... (the summer project)
Posted: 17 Jun 2017, 16:21
by kroffe
Yes, just as Ricard points out the DPP1 need sound data to read on a cartridge otherwise it will not sound.
Re: DPP1 wannabe ... (the summer project)
Posted: 17 Jun 2017, 17:51
by Mr_-G-
Are those chips easy to find?
Re: DPP1 wannabe ... (the summer project)
Posted: 20 Jul 2017, 20:37
by Marlowes
OK - I received a snare cartridge today, courtesy of
Belsedub@99musik.se
But the sound level turned out very very low. Something is needed beyond my old multimeter, soldering iron and outdated brain.
I will contact Ricard (1h from where I live), and send the unit to him.
Perhaps it is the piezo sensor under the pad that needs replacing? Ricard and Kroffe will know ...
The heads of the screws closing the box were so damaged I had to drill them out.
Lots of stuff inside. 1983?
"To be continued!"
/Michael in Scania
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- IMG_1390.jpg (154.41 KiB) Viewed 3490 times
Re: DPP1 wannabe ... (the summer project)
Posted: 20 Jul 2017, 23:33
by ricard
If the output is low I would guess something has happened to the output stage, but of course it's never what you think it is. I wonder if it's possible to find the schematics for this thing.
Re: DPP1 wannabe ... (the summer project)
Posted: 21 Jul 2017, 09:17
by Marlowes
Ricard:
I wonder if it's possible to find the schematics for this thing.
Perhaps Kroffe knows where to aim that question?
/Michael
Re: DPP1 wannabe ... (the summer project)
Posted: 10 Sep 2017, 18:20
by Marlowes
Hej!
Got a message from Ricard today: "
It is OK again! Just replaced a 4069UB."
I hope he will add some useful hints below in this post.
Anyhow -
Ricard is the best! Thanks a lot, old pal!
And I really hope he will put his band back together soon and that I can join too.
As soon as I get the unit back to my studio I will post pictures and audio samples.
/Vänligen
Michael in Scania