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I've gone DIY again - Sparta Synthesizer
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Broadwave
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Joined: 25 May 2011
Posts: 1118
Location: Manchester UK

PostPosted: Sat Jan 07, 2017 7:52 am    Post subject: Reply with quote

Finished - I was concerned about crosstalk from all the patch point wiring, but it sounds remarkably clean. I still have a little bleed from the noise generator which I just can't get rid of (but it's no worse than an original Odyssey or 2600).

I did manage to blow a couple of SSM2024s along the way before I realized that they *really* need power protection :bang: - I managed to modify the circuit for much cheaper Cool Audio V2164 Quad VCAs.

I'm giving DIY a rest for a while - I can't think of anything else I need at the moment. I'll get a demo up on YT in the next few days.




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Bertotti
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Joined: 10 Jul 2010
Posts: 3384
Location: Middle of nowhere

PostPosted: Sat Jan 07, 2017 2:43 pm    Post subject: Reply with quote

Great!
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DaniH
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Joined: 14 Sep 2010
Posts: 254
Location: Tampa

PostPosted: Sat Jan 07, 2017 3:03 pm    Post subject: Reply with quote

Looks really nice. Cannot wait for the video.
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voip
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Joined: 27 Nov 2014
Posts: 3758

PostPosted: Sat Jan 07, 2017 5:36 pm    Post subject: Reply with quote

Excellent. Very pleasing on the eye. Nice to see it finished and can understand need to rest from DIY for a while.

.
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Broadwave
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Joined: 25 May 2011
Posts: 1118
Location: Manchester UK

PostPosted: Sun Feb 05, 2017 8:00 am    Post subject: Reply with quote

Finally... Properly completed. 7 week build, which is pretty fast for me.

Leather side panels on, rear I/O panel sorted (although due to a silly mistake I made in the artwork, it's white not, anodised - I'll get it re-done at a later date). Calibrated, re-calibrated & re-re-calibrated. It's all behaving perfectly Wink

I ditched the idea of plug-in VCFs for the time being, but it does have both ARP 4023 & 4035 VCFs inside which I can select with a switch.


I'll get a demo up as soon as I can.

Dual VCF Module











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DaniH
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Joined: 14 Sep 2010
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Location: Tampa

PostPosted: Sun Feb 05, 2017 3:26 pm    Post subject: Reply with quote

Looks really nice. Possible YouTube video soon??
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BobTheDog
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Joined: 21 May 2007
Posts: 1535

PostPosted: Sun Feb 05, 2017 4:32 pm    Post subject: Reply with quote

Wow, very nice job.
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ProfessorNick



Joined: 16 Mar 2012
Posts: 30

PostPosted: Sun Feb 05, 2017 6:56 pm    Post subject: Reply with quote

That is pretty amazing. Looking forward to hearing a demo!
Good job!
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Akos Janca
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Joined: 16 Mar 2005
Posts: 1158
Location: Budapest, Hungary

PostPosted: Mon Feb 06, 2017 2:29 pm    Post subject: Reply with quote

This is something really exceptional! Thank you for the photos and all details. Looking forward to any news!
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