Search found 795 matches

by Rasputin
Wed Apr 15, 2020 11:07 am
Forum: General Synthesizers
Topic: Vintage synths, are they really worth it?
Replies: 15
Views: 3609

Re: Vintage synths, are they really worth it?

My question is, are vintage synths really worth the price and headache compared to their modern counterparts or is it more of an eyecandy/synth collectors game? Run away while you still can :D Vintage has its own charms, nostalgia, whimsy, quirks, and such, and it can be fun to tinker with if you'r...
by Rasputin
Tue Apr 14, 2020 3:07 pm
Forum: General Synthesizers
Topic: Ensoniq SDP-1 User Manual
Replies: 3
Views: 886

Re: Ensoniq SDP-1 User Manual

well, its not really related to the Mirage, closer related to the EPS 16 as that's the sample playback + digital filter architecture it is based on. Please back up that assertion with a logical development timeline and documentation of which Ensoniq chip(s) make the SDP better related to the EPS16 ...
by Rasputin
Mon Apr 13, 2020 10:36 pm
Forum: General Synthesizers
Topic: Ensoniq SDP-1 User Manual
Replies: 3
Views: 886

Ensoniq SDP-1 User Manual

A fairly rare and not so coveted keyboard which is cousin to the Ensoniq Mirage, but seems like someone somewhere might be interested in having the instructions in PDF, so here is where I will post them. Ensoniq SDP-1 Owners Manual: https://mega.nz/file/CUdGXK6Z#OSRCeJGoVM0mgEurGMyVExuIATHsudTDVssnN...
by Rasputin
Mon Apr 13, 2020 12:54 am
Forum: HELP!
Topic: Ensoniq SD-1 stuck at test mode (no boot)
Replies: 12
Views: 2212

Re: Ensoniq SD-1 stuck at test mode (no boot)

How one ends up in "rack" mode?! Since everything else seem to be working and serial data (from the panel) is passing thru the keyboard board that means that the fault is probably at the KPC board? On the SD-1, this normally would be done deliberately by bridging J11 (keyboard connector) pins 17 an...
by Rasputin
Sun Apr 12, 2020 7:35 pm
Forum: HELP!
Topic: Ensoniq SD-1 stuck at test mode (no boot)
Replies: 12
Views: 2212

Re: Ensoniq SD-1 stuck at test mode (no boot)

I find it very weird that both the keyboard and the panel are not working.. If it was the DUART then it would not pass calibration. I suspect what you have done is bypass the keyboard processor, and now the serial comms from the display are going directly to the DUART. This automatically takes it o...
by Rasputin
Tue Mar 24, 2020 3:12 pm
Forum: HELP!
Topic: Help to identify E-mu Emax 1 Rack Modification Mod
Replies: 1
Views: 811

Re: Help to identify E-mu Emax 1 Rack Modification Mod

It looks like it has been modified as there are blue wires soldered to various components on the mainboard. They aren't "mods" in the sense that the owner was trying to achieve something beyond what the factory inteneded. Those blue wires are normal and added by the factory as part of an engineerin...
by Rasputin
Mon Mar 16, 2020 6:38 pm
Forum: HELP!
Topic: Ensoniq EPS-16+ Repair (stuck in test mode)
Replies: 10
Views: 2351

Re: Ensoniq EPS-16+ Repair (stuck in test mode)

belzrebuth wrote:
Mon Mar 16, 2020 1:59 pm
It was the UART chip after all, replaced it and the unit now boots.
Great to hear. Now to solve the SCSI mystery in the other unit...
by Rasputin
Thu Mar 12, 2020 3:14 pm
Forum: HELP!
Topic: Ensoniq EPS-16+ SCSI issue
Replies: 13
Views: 3003

Re: Ensoniq EPS-16+ SCSI issue

I have an EPS16+ rack that came with a ZIP100+ and I'm sure it worked without any mods. I also put the scsi power on a switch as I found having term power on and no scsi device attached, on boot up the EPS16+ gets confused and throws a wobbley. I think it hangs, locks up. Is it possible that you ha...
by Rasputin
Wed Mar 11, 2020 5:32 pm
Forum: HELP!
Topic: Ensoniq EPS-16+ SCSI issue
Replies: 13
Views: 3003

Re: Ensoniq EPS-16+ SCSI issue

belzrebuth wrote:
Tue Mar 10, 2020 2:34 pm
Btw are the schematics for the scsi option avalaible anywhere?
You were already so close to the schematics.

http://zine.r-massive.com/ensoniq-techn ... chematics/
by Rasputin
Sat Mar 07, 2020 1:08 am
Forum: HELP!
Topic: Ensoniq EPS-16+ Repair (stuck in test mode)
Replies: 10
Views: 2351

Re: Ensoniq EPS-16+ Repair (stuck in test mode)

belzrebuth wrote:
Fri Mar 06, 2020 11:15 pm
I zoomed a bit on the pin11 and I can see faint serial data output periodically..But I'm not sure for the 1.38V DC..I think it should be higher.
I agree. I don't think that is proper behavior. I would say there is a good chance that replacing the DUART is the solution or at least a key part of it.
by Rasputin
Fri Mar 06, 2020 6:34 pm
Forum: HELP!
Topic: Ensoniq EPS-16+ Repair (stuck in test mode)
Replies: 10
Views: 2351

Re: Ensoniq EPS-16+ Repair (stuck in test mode)

I'm concerned about that CS pin on the UART chip since it's coming from the custom 5700 ensoniq chip directly and it's mostly stuck high. Don't make the mistake of thinking that I know everything there is to know about the EPS, VFX, or anything else. Some or all of my musings could be erroneous. It...
by Rasputin
Fri Mar 06, 2020 3:13 am
Forum: HELP!
Topic: Ensoniq EPS-16+ Repair (stuck in test mode)
Replies: 10
Views: 2351

Re: Ensoniq EPS-16+ Repair (stuck in test mode)

The faulty EPS16+ is stuck on test mode when booting up. Sadly I don't have the schematics for the machine only the service manual. One thing that's suspicious is that the UART chip (MC68681P) is maybe preventing connections. For starters, get the EPS16 schematics: http://zine.r-massive.com/ensoniq...
by Rasputin
Tue Feb 25, 2020 7:41 pm
Forum: General Synthesizers
Topic: Casio CZ-5000 sequencer tapes convert to MIDI files?
Replies: 4
Views: 1582

Re: Casio CZ-5000 sequencer tapes convert to MIDI files?

Feel free to PM me your info and files. I can take a gander.
by Rasputin
Tue Feb 25, 2020 7:19 pm
Forum: Samplers
Topic: Ensoniq EPS system disk needed.
Replies: 8
Views: 3481

Re: Ensoniq EPS system disk needed.

It's as if the sample RAM is reset, all sounds reduced at once to a faint click, eventually followed by total silence. I do have a PS Systems 4X Memory Expander , unfortunately uninstalling it did not resolve the issue. About part number: Ensoniq service manuals do not have schematics or part numbe...
by Rasputin
Thu Feb 20, 2020 11:47 pm
Forum: General Synthesizers
Topic: Casio CZ-5000 sequencer tapes convert to MIDI files?
Replies: 4
Views: 1582

Re: Casio CZ-5000 sequencer tapes convert to MIDI files?

madtheory wrote:
Thu Feb 20, 2020 3:56 pm
Any thoughts on this? It would be pretty cool to just load in the WAVs of tapes and get a MIDI file.
Is there an abundance of these WAVs somewhere?