My polysynth is finally finished :D

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Re: My polysynth is finally finished :D

Post by Synthaholic » Wed Oct 01, 2008 8:34 pm

kayvon wrote:Congratulations that man! It sounds great aswell. Here's hoping that you carry on with designing & making analogue synths in the future.
Yes... SOMEONE needs to start making a JP-8 clone... wink, wink, nudge, nudge. ;)
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Re: My polysynth is finally finished :D

Post by RobotHeroes » Wed Oct 01, 2008 9:30 pm

The organ keys look awesome.

At first I was like huh this synth does speech? Just like everyone else I guess I can't hear the demo's till tomorrow or next month? Unless you post them somewhere else.
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Re: My polysynth is finally finished :D

Post by adamstan » Wed Oct 01, 2008 9:40 pm

cornutt wrote:What an effort! Excellent! Tell us a bit about the VCO and VCF architecture.
Here is voice block diagram
Image

All analog modules are based on previously existing designs available at various Synth DIY sites.

VCOs are based on Rene Schmitz designs - http://www.uni.bonn.de/~uzs159 , "VCO4" with some modifications.
Triangle waveshaper is a Moog circuit (single transistor wavefolder), described in "Voltage-controlled Electronic Music Modules" (available at moogarchives).

VCF is standard Moog ladder filter, based on Mini schematics.

VCAs are standard OTA-based circuits utilizing LM13700 chips.

Ring modulator is based on MC1496, schematics can be found for example at http://www.yusynth.net
yoozer wrote:How long did it take to finish everything, and how much do you estimate that it has costed you in raw materials?
Parts, circuit boards etc. cost me around $1600 - but I had case and keyboard for cheap ($100), and front panel had been done for me for free - these elements can raise cost a little bit. Also, horribly expensive MAX525 DACs used to generate keyboard CV were free samples.
As for time, it's difficult to tell, beause there were many versions, design changes etc. I started designing this thing about two years ago. And after doing this, I'm not surprised that guy from Jomox wants to discontinue SunSyn - indeed, building polysynth is often repair at the same time, and can be nightmare ;-)

For a while I've been thinking about making rack version and selling it (using only EGs designed by me to avoid firmware copyright issues), but it isn't easy to establish small electronic business in Poland (and, it seems generally in EU) - think about many certificates, permissions, and other things that aren't involved with DIY... and RoHS which isn't good for synths that have to live long.

Sharing design seems like good idea, but creating such page takes time, and I haven't much of it. But it's possible in the future.

I'll try to upload demos to other site.
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Re: My polysynth is finally finished :D

Post by sonny1 » Wed Oct 01, 2008 10:11 pm

Bummmer, I the acount on your snapdrive or whatever won't let me hear the sound samples. Looks GREAT though, I'm really jealous, I wanna build one, but don't have the time! or skill!

Good going, I'll get to hear the sound samples soon.
You should demo it on Sonic state Video, or Youtube.
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Re: My polysynth is finally finished :D

Post by adamstan » Wed Oct 01, 2008 10:21 pm

Man with a tape recorder | Living in the '80s ;-)

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Re: My polysynth is finally finished :D

Post by space6oy » Wed Oct 01, 2008 10:30 pm

that...is...amazing.
& it sounds fantastic!

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Re: My polysynth is finally finished :D

Post by drummy » Wed Oct 01, 2008 11:01 pm

Nice! Can't listen to the samples now, but I will later. From your user name, you should call it Adam's Tan. :D

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Re: My polysynth is finally finished :D

Post by oryjen » Wed Oct 01, 2008 11:35 pm

Aeally nice and original looking synth!
Seriously, you're a beast! =D>
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Re: My polysynth is finally finished :D

Post by RobotHeroes » Wed Oct 01, 2008 11:59 pm

Nice demo's. A special ranking should be bestowed upon you like Synth Jesus or something beyond Explorer.

I name thee synthesizer the "Sonance AS-5", or "Seer AS-5". Now venture forth and destroy all your enemies and kick someone in the chest for extra credit.
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Re: My polysynth is finally finished :D

Post by mome rath » Thu Oct 02, 2008 12:10 am

listened to the demos and

you, sir, made an analog polysynth =D>
god elton can't you suck

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Re: My polysynth is finally finished :D

Post by nadafarms » Thu Oct 02, 2008 1:27 am

Unreal... :shock:

its the Hella phatty!
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Re: My polysynth is finally finished :D

Post by Gianni » Thu Oct 02, 2008 1:50 am

That. Is. Awesome.

Great job, sir. Makes me want to build one myself but I have a hard time setting up racks so I'm hardly skillful for manual work.

=D> !

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Re: My polysynth is finally finished :D

Post by Solderman » Thu Oct 02, 2008 2:09 am

Congratulations and great respect to you for your hard work. This is an outstanding creation with a pristine sound.
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Re: My polysynth is finally finished :D

Post by cornutt » Thu Oct 02, 2008 2:12 am

Wow. Who would have thought that someone could build an analog polysynth from scratch in this day and age. Bravo! =D>

The samples are interesting. The leads and bass sounds are definitely Moogish, but the strings and pads have more of an Oberheim vibe.
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Re: My polysynth is finally finished :D

Post by Hossinfeffa » Thu Oct 02, 2008 2:36 am

cornutt wrote:The samples are interesting. The leads and bass sounds are definitely Moogish, but the strings and pads have more of an Oberheim vibe.
Funny you mentioned that, because I thought that too. It's like how the Andromeda has Oberheim and Moog copy filters in it.

Wonderful job creating it! It looks snazzy and sounds even better. If they were being mass produced it would really be on my "to buy" list. ;) I looked up the B-1 and the only thing I can find is a Teisco B combo. It has a smaller number of keys, but the bottom frame looks roughly the same.

I noticed you said you spent roughly $1600 on parts for building this. That shows roughly how much it costs to create an analog synth of this power today. But if you compare it to a Prophet 08, they sell new for $2000. Estimating, I'd say the Prophet parts would cost more money, but it almost seems like DSI is making little profit. $100-$400 profit on each sale, perhaps. Even then, some of that is taken out for the store that sells it. Eh.. I'm not good this kind of stuff. Perhaps someone smarter could make sense of what I'm trying to say? :P
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