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Showing posts sorted by relevance for query loscha. Sort by date Show all posts
Showing posts sorted by relevance for query loscha. Sort by date Show all posts

Wednesday, January 20, 2010

Korg Sigma Service Manual

via Loscha:

"Hello everyone.
No-one has this online, and I've been meaning to share it for quite some time.

This is the Korg Sigma Synthesizer service manual in it's entirety.

http://www.loscha.com/images/KP30-01.gif
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mirrored here

Thursday, November 01, 2007

RAJ MUSICALS SAARANG

images via this auction
"VINTAGE Electronic Tanpura Synthesizer DELUXE SAARANG RAJ Musicals
- Made by: Radel Systems , Bangalore
- Type No. TBR6
-SI. No. 266

Runs on 6 C batteries and for having such a small speaker can get painfully LOUD! Radel Saarang Electronic Tanbura

The 'Saarang' produces the plucked sound of a conventional stringed tambura (tanpura) used for classical Indian music. The sound is produced electronically without the use of any strings. The 'Saarang' plays by itself and does not need a person to play it.

Pitch tunable by more than octave and covers the range of male as well as female voices - from lower A to higher C (lower 6 to higher 1, Karnatic system or lower White 6 to higher White 7, Hindustani System).

The Tanpura
The Tanpura is a four to six stringed fretless instrument made of wood, and usually combined with gourd. It provides the performing artist(s) with a tonic reference and enriches the background with its unique harmonic drone. The strings are tuned in a manner that emphasizes the tonic and the dominant notes of the raag. The bridge is slightly curved to not only provide a buzzing sound (as the strings are plucked), but also to generate various harmonics that enhance the tonal quality of the instrument. The size (gourd and neck) of the instrument may vary depending on whether the artist is an instrumentalist, male vocalist, or a female vocalist. Tanpura was most probably included as a part of a classical music ensemble since the seventeenth century.

The Tanpura player plucks the strings one at a time, in a steady, repetitive, almost orderly manner, using the index and middle fingers.

These days "electronic" tanpuras <../elect/elect.html> have become commonplace, since they do not require a human player, are less expensive, simpler to tune, require minimal maintenance, and are easily portable. Many Indian professional musicians (including world renowned artistes like Pandit Debu Chaudhuri and Pandit Aashish Khan) are now touring without a tanpura player and are using the Riyaz Raagini <../elect/elect.html> sampled electronic tanpura machine as it sounds so very realistic. However, some artists prefer a natural instrument to an electronic one when available, and sometimes combine the two types. Electronic Tanpuras are, naturally, used by many students for practice as in this way the student can practice for long periods of time as and when needed without the need for a person to sit and play tanpura for them.

Electronic musical instruments are defined as instruments that synthesize sound from an electronic source. The origins of electronic music can be traced back to the work of Hermann Ludwig Ferdinand Von Helmholtz the German physicist, mathematician and the year 1860. While many instruments were developed in years to follow it was not till The Vacuum Tube Era (1915-1960) and Integrated Circuits time, that real muscle made it to world of electronic musical instruments. With travelling Indian musicians, good electronic instruments have been of great help both in performances as well as in Riaz (practice sessions).

David Courtney, musician, music theorist, divides these instruments into 3 classes, Shruti Generation, interments that replaced drone instruments like the Surpeti. Electronic "Surpetis" have been in use for about 20 years. In recent times the more refined Electronic Tamburas have become very popular. The 2nd generation are the Lahara Machines that provide repeating melodies to accompany drum solos. The 3rd category is the Theka Generation, or the Drum Machines, devices that provide sound comparable to the Tabla."

Udpate via Loscha in the comments:
"I have one of these, and it sounds like this:
http://www.loscha.com/music/Loscha-Tambura_Test.mp3
Well, almost the same. Mine is the "base" model.
The pcb look like this;
http://www.loscha.com/music/saraang-pcb.jpg
http://www.loscha.com/music/saraang-pcb-marked.jpg

I am adjusting an modulating the notes pitches in real time with this track.

The unit arpeggiates the tones in a 6 note sequence, and the notes are fixed, the root note on my unit has no fine tuning, only coarse.
You have notes on steps 1, 3 4 and 5 of the pattern. You can only turn on and off notes, and each note has a certain range, constrained by traditional patterns.
I think the Deluxe unit has 5 notes in the sequence, my base unit has only 4.

I corresponded with the creator a while ago, and this is the main section of what he wrote

'At the outset, please accept our apologies for this delayed response. For some unknown reason, we were unable to connect to the site referred to in your mail and we were not in a position to figure out which model you possessed. We were able to connect today and now know that you possess an obsolete version of the Saarang that went out of production seven years ago. We seem to have destroyed all the data connected with this model and are not in a position to furnish them to you. Considering that you are an electronics engineer, the following explanation should help you in trying out whatever modifications you may want to perform.

The four strings are synthesized through four oscillators based on 555 Timers. These signals are amplitude modulated through a capacitive charging and discharging circuit comprising two transistors, BC547 (NPN) and BC 557(PNP). Each of the four PNP transistors is triggered on by a
zero going pulse applied to its base, which results in an electrolytic capacitor getting charged to a peak value. This voltage acts as the amplitude modulating voltage for the square wave input. The triggering of the PNP transistors is controlled by a control circuit comprising another 555 timer, a counter and a demultiplexer.

We hope that this explanation is of use to you. With regards,

G. Raj Narayan'

My Tambura is one of my favourite things in the whole world, and it is in my top 5 musical things I'd never part with if I had to sell up everything I owned. "

Update: mp3 sample demo from Loscha here.

Saturday, June 02, 2012

Quasimidi Rave-O-Lution Resources via Loscha

Some tips and resources in via Loscha:

"www.quasimidi.eu are the service technicians, and they have spare parts and upgrades, and have manuals for download. It is in German, however, if you view it in Google Chrome, it will automagically translate the pages for you. ROM upgrades, Drum & Synth expansions are available.

The display connector has one more hole than there are pins. If you have it on wrong, the unit won't boot. Check before you screw it up, otherwise it takes four and a half minutes to get your heart out of your throat, because you think you've zapped your expensive synth. If you don't set the

The factory reset (power on whilst holding down Write/Dump) doesn't completely clear the memory, it returns it to the factory preset patterns and patches (including "The Robots" and "Voodoo People")
http://www.loscha.com/Raveolution-309/Quasimidi-famous-tunes.mp3

Yes, it has tablas in the percussion sets. You can rest easy.

I have not mirrored the manuals on my site, as they are available from www.quasimidi.eu freely and easily

Please Enjoy [tons of close-up pics of the inside]:
http://www.loscha.com/Raveolution-309/

Any sensible questions, please ask via raveolution@loscha.com and I'll see if I can help you out!"

Friday, May 19, 2023

ChucK (1.5.0.0; codename "chai") Update

This one is in via supporting member, Loscha, who had the following to say:

"A new major release of audio programming language ChucK has come out.
ChucK has been on the scene for a solid 20 years now.
Apart from general synthesis and analysis, ChucK was a big mover in the early Live Coding music scene.
The language lets you add instruments and algorithmic elements to a live performance at will.
ChucK is a very easy and powerful language to learn."

The following was made in ChucK by Loscha back in 2018. You can find the code at the bottom of this link.




Details on the update via the ChucK email list :

"A new release of ChucK (1.5.0.0; codename "chai") is here:

https://chuck.stanford.edu/
https://chuck.cs.princeton.edu/

This is a major release; additions and updates include:

* ChucK + AI (ChAI) -- a set of AI/ML tools for building interactive AI
musical instruments and systems (thanks to Dr. Rebecca Fiebrink for
blazing the trail on interactive AI for music; thanks Yikai Li and the
students of Music AI):
https://chuck.stanford.edu/chai/
https://chuck.stanford.edu/doc/reference/ai.html

Thursday, May 22, 2008

E-Mu Drumulator Scans via Loscha


via Loscha.

"Also presenting today .....
Emu Drumulator Documents.

Preliminary version of schematics

Some notes on interfacing your Drumulator to other equipment. Who has to be the master, and who has to be the slave. Drumulator doesn't always wear the pants, it seems, depending on the width of the pulse it is meant to receive (Ooh Aah matron!)

Craig Anderton's manual for the Drumulator software for the Apple IIe"

Thanks Loscha! Be sure to check out all posts via Loscha here for more scans.

Thursday, May 14, 2009

Roland TR-330 Rhythm 330

Roland Rhythm 330 up for auction via Loscha: "Quite similar to the TR-77 (Roland_TR-77-SERV.pdf I got those schematics from burnkit2600's site, thanks to him and whoever scanned them in originally).

It's a big, wooden veneer cased organ top plonker with loads of bass and great analog latiny percussion - claves and such. I've got them tuned to sustain a bit longer than manufacturer intended, but, this is changeable on the voicing board on some trimmers.

The voice board also has a "Snappy" control which goes from very mellow to quite outrageously distorted and over-rides the rest of circuit to fizziness.

I live in Melbourne, Australia. The going rate seems to be between 300-450 Australian for these. Am asking for $350 Australian. Am not a greedy man. Based on units that have sold lately on ebay and privately, it seems this is the 2nd rarest TR drum machine, after perhaps the 77. No-one had sound samples online, which is something. I'm hoping to rectify, and to eventually make a more complete recording of the patterns at all tempi, etc.

I've made a modification to the unit which was needed and unobtrusive. The Metronome switch only had one function in real life; To convert "Swing" into "Metronome". I have used some spare terminals on this as a speaker cut switch. The only way you can hear metronome is through both the speaker and the output jack, in all other patches, the Metronome Off/On switch mutes the speaker. The speaker is quite loud, and pumps a lot of air (big old oval speaker). This allows you to hear the pure sound of the unit through your amp/ effects/ compressor/ Funk-A-Duck or whatever else you have.

If anyone has the service manual or schematic, I'd be indebted if they'd email me a copy or a link to it, also.

The front of the case. The damage on the top left of the machine is that the veneer has been pushed back and has creased a little bit, over a slight dent in the wood.

Front of machine is to the left. Big Speaker in the back. Power supply regulation board to the left. Transformer to the right. In the front we have the clock and divide down board. This is almost identical to the TR77 board, as above. The switching logic is below the metal plane everything is resting on. This is made up of diodes and such attached to the multi-pole switches. No roms are used, it's all discrete logic.

The Sound Board and obverse of Sequence Logic Board. You can see the trimmers here. The one on the top left all on it's own is "Snappy". The three on their own row are all kick drum related (tune, resonance of circuit, and mix volume). The kick is very useful. It sounds like an 808, with lots of sine-boom. It doesn't have a percussive attack noise burst like a 909. The other trimmers are tune and resonance and pitch for the tuned percussion (Claves, Toms). In my sound examples, I have the decays set quite long, mostly just before the point of resonance, as I was using it for slower pieces most recently. The circuit slides out of the wooden sleeve with 4 screws on the bottom.

I'm certain that the rubber feet on bottom of unit are not original, they are "chocolate" (square, beveled) kind, not round ones as I would imagine would have been.

A few last notes:
The tempo light only triggers on the first beat of the bar. It is red. A globe in a red filtered bezel, not an LED, although you could put a 5mm UV LED in there if you wanted, I think it might fit. In fact, I'm happy to throw one in if you want to try it. I've tried to get the tempo calibrated roughly to the markings on the front panel, however, there are 2 adjusters on the clock board, you can make it go uselessly fast if you so wish. A simple turn of the trimmer.

http://www.loscha.com/images/TR330-AllBeats.mp3
Quickly cycling through all patterns from left to right. About 2 bars of each.

http://www.loscha.com/images/TR330-Transitions.mp3
Slowly turning the balance knob from left to right, on "Mambo".

http://www.loscha.com/images/TR330-MamboSwingStack.mp3
First Mambo, then Swing, then both of them stacked on top of each other. You can depress multiple buttons for combinatorial sounds.

it's got switchable line voltage around the back along with Audio out and the Start/Stop Footswitch jack -- ."

Sunday, May 30, 2021

March 1980 Roland "We Design the Future" Vol.3 - Volume 3 Brochure Catalog / Magazine



These are in via Loscha

You can view them here by clicking on the images or you can download them via Loscha's links here:

195mb PDF (made with PDF24)

Higher quality single pages in a 281mb ZIP files

Per Loscha: "I was loaned this by a friend to scan. I had to set up a custom scanning table area so I could lay the book flat so as not to crease or damage the piece, as it's quite fragile. I used my flatbed LIDE scanner, and built up walls of books on either side until they were exactly the same height as the scanner bed."

Enjoy!

Friday, November 17, 2006

Stylophone Demonstrations via Loscha


This one via Loscha

"I was cleaning up yesterday, I found my Stylophone 7" demonstration record. Recorded it as 96k mp3s and slapped it up on a very very basic page. A friend has a stylophone for me, but, I haven't gotten it from him yet. When I do, I'll attempt to make a schematic - because I haven't seen one online.

Jaycar Electronics - an Australian electronics company has a Stylophone-like kit you can built - as does Dick Smith Electronics. None of them are as good as the Dr Bohm Hobbytron. The Dr Bohm isn't the same as a real stylophone, though. A real stylophone has a BJT based oscillator, where as the Dr Bohm (and the Jaycar and DSE kits) are all 555 based.

Rolf Harris was quite famous in Australia, and more so, I think, in the UK. He was from Bassendean - a pretty dreary suburb in Perth (where the sadly defunct Casio featuring band Turnstyle were from). He had a kids TV Show in the 70s. He recently painted the most up to date official portrait of Queen Elizabeth II.

An inside picture of one here.

My LP recording is here.

The "Vibrato" on a Stylophone actually lengthens one side of the rectangle wave, not both sides, so, it is Vibrato, but, it is also Pulse Width Modulation. My friend Robin Whittle found this out when he hooked his stylophone up to his oscilloscope.

--
www.loscha.com"

Image via Nick Law via Flickr, via Creative Commons.

Friday, November 03, 2006

Loscha.com


Loscha has contributed quite a few posts to this site. Every time he does I ask him if he has a site he'd like me to link his name to. Well, he hadn't until now. Title link takes you there. It's a simple site and a work in progress, but you will find some interesting bits. There is a link to his music, YBB or Yamaha Black Boxes which he formed and you might remember from this post, some stuff for sale, and links to other sites.

Some notes from Loscha:
"In the YBB page I have links to "Session III", the album recorded by the Yamaha R&D Studios in 1981 to send out to people to demonstrate the then new GS-1.

This album is supposed to be ridiculously rare. The only one other than this I've ever seen on sale was about $100us or something crazy on some guys website. It wasn't there a few weeks later, so, I guess he sold it. A friend got it for me as a present a while ago, cause I knew how muchI love the old FM technology. I didn't ask how much he paid, but, it was "more than one behringer pedal, and less than two". I've only seen a few scant references to it on the internet, so, this is somewhat of a major scoop, I think.

I've got some synth service manuals up on there, and a page of my own tracks from over the years. Trying to add more stuff when I get the time."

Saturday, May 06, 2006

Clap Trap Fap



This one via Loscha, via this auction.

"Music Aid (Simmons) Claptrap

Super rare and highly collectable. 100% analogue circuitry!

This was made sometime in the 1970s by the company that was to become Simmons (famous for their digital percussion instruments).

I have never actually seen another one of these, and certainly not on ebay. I think Mouse on Mars have one.

Can be triggered from just about anything (see rear panel). I was triggering it from a TR-808 and MPC 3000 no problems.

Please note: it does not do 'realistic' handclaps. It is an analogue machine, so if freaky analogue percussive noises are your bag then this is the box for you. It is capable of all maner of classic Rolandesque snares, crashes etc aswell."

Title of post also curteousy of Loscha. Thanks Loscha!

Tuesday, May 20, 2008

Yamaha GX1


flickr by Loscha

full size

"From the pages of the Organ Blue Book 2002 - Japanese Edition!"

via Loscha. If anyone can translate this one, feel free.

Tuesday, October 25, 2022

Yamaha Portraits Of An Artist Digital Instruments Catalogue & More



Supporting member, Loscha wrote in to let us know he's uploaded some vintage Yamaha sales books, catalogs and brochures that you can find here: https://archive.org/details/@loscha.

Pictured is the cover of Yamaha Portraits Of An Artist Digital Instruments. Also uploaded:

Yamaha Professional Equipment from 1989

What's the Smartest Choice You can Make In An Electronic Keyboard? from 1988 featuring the PSR-80 and PSR-90

Yamaha Electronic Keyboards PK-06 from 1998

Yamaha Digital Catalogue from 1989

You can flip them at the link above.

Tuesday, May 04, 2021

Australian CASIO MIDI Users Club Newsletter 3., CZ Patches & Rock School Courses



Additional scans in via Loscha, who brought us the MIDI PRIMER scans earlier today (higher res pics added there BTW).

The first 11 are the CASIO MIDI Users Club Newsletter 3 featuring the AZ-1 keytar on the cover. Below that are some CZ patches followed by Rock School course agendas. To be there at the time... It made me think of the New York School of Synthesis (if you haven't seen it, don't miss it).

Featured:

Australian Casio MIDI User Group Newsletter 3 (higher res PDF here)

Advertising about Australian (Melbourne) Synthesizer and guitar workshops

Handwritten patches from an attendee of one of those workshops.

If anyone has any further editions of Australian MIDI Users Club newsletter, please email loscha@gmail.com.

Saturday, July 10, 2010

MATRIXSYNTH T Spotted


Loscha and a "Cremona Dvorak 1/2 size double bass. Made in Czechoslovakia. w/gig bag"

Also added to this post.

Check out the dudes face expression behind Loscha.

Saturday, October 13, 2007

Yamaha IC Data Book

via Loscha:
"Chip Pinouts for all the customer Yamaha chips, and some other generic chips (4000 series, op-amps, etc) from the Yamaha devices listed below (as well as some PA equipment which is much less exciting). One page of the index didn't scan into the book, but, they are in a sensible easy to follow order, which is clear from the cross referenced matrix of chip vs device that follows. The original book is A5, double sided, and was bound with a clip. I was able to unclip it and feed it into the multi sheet feeding scanner at work. I am very happy to be able to share this with the world, as I don't think this book would have seen much distribution outside of Yammy service circles. I'm estimating the date to be 1981, but, if anyone knows, please let me know! You can mail me directly to loscha@gmail.com, I'd love to hear from anyone who enjoyed the book, or found it really helpful or educational!

CS5 CS10 CS15 CS30 CS30L CS50 CS50 CS60 CS80 CS20M CS40M CS15D
SK30 SK10 CP10 CP10 CP20 CP30 CP70 CP70B CP80
YC10 YC20 YC30
YC25D YC45D"

Link to scan of IC Data Book: [PDF]

Wednesday, May 06, 2009

Original Fairlight Brochure

via this auction via Loscha. If anyone knows when this was from please comment. Click on the image to read.

"4 panel front and back full color. I'm not an expert on Fairlight, but, I'm pretty sure it's from the first series: has 8" floppies and the 6809 CPU add on is listed as being available for it (so you can run a bit of COBOL or Pascal in your spare time). In excellent condition except for a tiny dog ear on front , as shown in scan.

As some book somewhere put it .... Trailblazing Megabuck Sampling! This brochure reflects that, quite well I feel. Has some info about the different "Pages", as well as the old schtick "you can sample Tim Shaw cutting through a cactus with a Demtel knife" or whatever example they using for sampling! 210 K or RAM is Standard in this reality. MIDI not even mentioned. Sounds can be "memorized" to disc. No sound degradation copying sounds! Inbuilt 20w amp for monitoring (gosh those boys and gals thought of everything!)"

via Loscha: "If anyone could let me know what series it is, I'd be thrilled. No date I can see on it anywhere."

Update: Note "It has the old Logo on it, which I think they changed when they went to IIx."

Monday, April 16, 2007

Cheer Time

via loscha.

"According to the lettering on the PCB inside the Boss SYB-5 pedal, it's 'CHEER TIME'."

Update: Steven's notes about the syb-5. Also, title link takes you to more shots sent in via loscha.

Saturday, April 07, 2007

Matrixsynth by Loscha

Title link takes you to one more. Thanks Loscha!

Update: I decided to go with the Leet version instead. You can find these Leet tiles here.

Friday, May 16, 2008

Synth Scans Via Loscha


Loscha just put up a ton of scans.

You can find them here.

Service manuals and more.

KORG Vocoder VC-10 pictured.

Be sure to check out these prior posts for more.

Update: they are now here.

Wednesday, May 13, 2009

YAMAHA Tone Generator TQ5 FM Synth MIDI Workstation

via this auction
"Yamaha Tone Generator TQ5 FM MIDI Sequencer Workstation.

Details:
* Maker: Yamaha
* Model: TQ5
* Type: MIDI Sequencer
* 8-Voice Polyphonic
* 4 Operator FM Synth Sounds
* Built-In Effects Processor
* MIDI In/Out/Thru Inputs
* Stereo 1/4" Output
* Heapdhone 1/4" Output
* Includes: Power Adapter"

Update via Loscha in the comments: "One of the finest, most innovative things Yamaha ever made.
It's a Tx81z with a basic effects unit, a sequencer, and a clock. Effects have a great gated reverse reverb. Think the "Silent Shout" album by The Knife (a few tracks have a horn-type sound that fades in with rev reverb, you can get that sound down pat easily).

The sound editing on it is intuitive, but, not complete. You can't edit everything, but, it's got a lot of useful Easy Edit parameters. Most useful for quick editing and tone optimization is the ability to change the waveforms of the 4 operators from the panel.

The sequencer has a metronome mode which is quite loud and pervasive. It is added to the mix post volume control. This can be routed to a jack on the side very easily, so that when you put something in the jack it mutes it, or you can route it to another channel. Timing is pretty good the sequencer.

The effects chip has a digital stream in and out, and is thus glitchable, although, I've only done this to mine once or twice. It's too precious to lose to a circuit bending disaster.

I have service manual if anyone needs any questions asker. Although, I should take some internal photos and include instructions on clock out for y'all one day!

Did I mention it has a clock and a calender on it?

-Loscha @ gmail dot com"

also see this post


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