Zero,

Your hero statusis hereby confirmed.  Thanks!  I've been wanting to know what's in the X911 for 20 years.

Mark

Hey Z t H,
Thanks for posting that! Always thought that the X911 was a Korg Sigma with MS-03 pitch-voltage  converter grafted on.. the MS-03 guess was right, but the Sigma part was not... just as well, since the Sigma uses eleven of the Korg 35 filter modules!
Cheers, Mike

Quote from: StephenGiles on December 19, 2005, 02:51:54 PM
This is the best I can do from a poor copy I have of the EH Quadriphonic Amp + Synthesiser. This is dated a few months prior to the Ambisonic, so most likely a prototype. Merry Christmas!
http://img.photobucket.com/albums/v517/uncle_boko/EHquadsynth.gif
Stephen

Thank you!
Too bad, there are plenty of SAD 1024 in these circuits...

Quote from: StephenGiles on December 19, 2005, 02:51:54 PM
This is the best I can do from a poor copy I have of the EH Quadriphonic Amp + Synthesiser. This is dated a few months prior to the Ambisonic, so most likely a prototype. Merry Christmas!
http://img.photobucket.com/albums/v517/uncle_boko/EHquadsynth.gif
Stephen

Who would like to volunteer to whittle that down to a mono version? 

~ Charlie

Still part 11 and 12 pending!

Thanks a lot for sharing those schems. Esp the EH-2 with fill service notes.

Do you have Boss PH-2 by chance?

Ihave to check at home but I think I have not this schematic.
There was a forum member that owned this schem and had to scan it (and dozen of unseen Boss service manuals) but I never seen it online!

Thanks for the tip. I PM'ed putrefusion (the guy who said he had the schem) to see what happens. On that search I also "discovered" bossarea.com--everything I always wanted to know! So far I'm looking for PH-2, DM-3 & PQ-4.  Sorry for hijacking the thread... back to normal now.   

Look at the EH Minisynth circuit - there is the classic EH envelope generator around Q1, which drives a filter consisting of IC2 & 3 - a pair of CA3094s. All that is needed is a peak follower to energise the envelope generator and we probably have a half decent triggered filter!!
Stephen

Quote from: Zero the hero on December 28, 2005, 07:24:21 AM
Still part 11 and 12 pending!

I've hunted around with the seach for about 5 minutes, and cannot find the first part!
I've found lots of other hot stuff, though, so, I'm not disappointed at that investment of my time!

Can someone please point me in the right direction?

Quote from: stm on December 28, 2005, 03:42:00 PM
Thanks for the tip. I PM'ed putrefusion (the guy who said he had the schem) to see what happens. On that search I also "discovered" bossarea.com--everything I always wanted to know! So far I'm looking for PH-2, DM-3 & PQ-4.  Sorry for hijacking the thread... back to normal now.   

I've got the DM-3 schem, I _will_ eventually get around to tracing out the PQ-3B and PQ-4. 
Thanks for all the schems Zero, I feel almost guilty at only posting the OD-9 now! 

edit:  Here's the URL, it's at GGG.
http://www.generalguitargadgets.com/boss/BossDM-3.gif

Thanks. If you ever como to trace those please PM me; let me know if there's a Boss schem you might be looking for to see if I have it.

Hey Zero,

Thanks for all the schems - best Xmas gift of all.  Definitely on a par with the pack of Hobgoblin beer my son gave me!

Peter

Hey,
Just took another look at the X-911 schemos - it actually does use the "Korg-35" filters as used in the Sigma... except these ones are built with regular transistors and FETs on the main board (instead of tiny black SIP modules) - as shown on the KLM-228 schemo - used in the electric bass, tuba and trumpet presets 
Like a Sigma with 13600 filter thrown in for good measure   
Cheers, Mike

Quote from: loscha on December 28, 2005, 10:43:16 PM

Quote from: Zero the hero on December 28, 2005, 07:24:21 AM
Still part 11 and 12 pending!

I've hunted around with the seach for about 5 minutes, and cannot find the first part!
I've found lots of other hot stuff, though, so, I'm not disappointed at that investment of my time!

Can someone please point me in the right direction?

I did only one post and I changed the title of the topic! No need of searching the forum!!!

Thanks to everyone who appreciated this gift!

I still have part 13 to post!

That's the last part of Xmas my gift. It was taken from an Italian magazine and I think that its still possible to order the ready to solder PCB.

Quote from: Zero the hero on December 29, 2005, 05:04:10 PM

Thanks to everyone who appreciated this gift!

Thanks for thanking us for thanking you for posting them!!!

Thanks a lot for these cool xmas gifts!

Markus