Restoring TWO Sequential Circuits Prophet 10 synths and stacking them with MIDI (40 Oscillators)!

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The techs at Bell Tone Synth Works vintage synth repair workshop recently restored TWO amazing Sequential Circuits Prophet 10s and since we also retrofitted both with MIDI, we decided to chain them together to create a 20-voice, 40-oscillator monster polysynth! Here's an overview of what goes into restoring one of them, and a demonstration of the "Prophet 20" in action, also featuring our lovely Hawk HE-2150 stereo tape echo. This is like playing FOUR Prophet 5s at the same time!
Sound demonstration starts at 6:42
(in case you don't care about the "tech stuff")
Bell Tone Synth Works is an electronic musical instrument repair workshop in Philadelphia, PA specializing in restoration and repair of vintage synthesizers and organs. Please email us with synth restoration inquiries at belltonesynthworks@gmail.com.
Website: belltonesynthwo...
Instagram: / belltonesynthworks
Facebook: / belltonesynthworks
Video by Alison and Stout and Darian Scatton, May 2020.

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13 сен 2024

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Комментарии : 393

@kohlemainen 4 года назад

The world is a better place because of people like you, restoring these wonderful instruments. Love it!

@gordon7462 3 года назад

The drones sound better than the shite on bandcamp.

@sasarasa88 4 года назад

great to see someone who can FIX vintage synths and also PLAY them. It seems to me that there's a lot of passion in this work and I highly respect that

@buckdiablo7907 4 года назад

I worked at SCI from 1978 to 1987, this was a trip down memory lane! I built, tested, tuned and repaired quite a few P10's. Compared to SMT electronics in use today, these were a lot easier to work on - you can actually see the components! Now I solder under a microscope down to 0201 size components. (smaller than a grain of sand).

@blimolhm2790 3 года назад

That's so cool. I have a SCI MAX here in Australia with a few spare CEM3394s. Much respect to anyone who worked at SCI, I've been meaning to get a hold of the book which explains the history!

@natevizzi2901 Год назад

Dude … that outro was like legendary …. You are unbelievably talented

@Denver_Risley 4 года назад

Holy moly! 2 Prophet 10's in the same room? I considered myself lucky to see two in the same decade.

@BellToneSynthWorks 4 года назад

believe me, so do I!

@LonnySarao64 4 года назад

chief tp I wish I could get my prophet to make a sound

@davebellamy4867 2 года назад

Someone in the UK also has two. Not me!!

@Fopenplop 4 года назад

if i send you my parents can you make them into vintage wurlitzers thanks

@BellToneSynthWorks 4 года назад

thank you for your perplexing comment

@alanhaynes418 4 года назад

@@BellToneSynthWorks When you see how difficult it is to find a beige/red/green Wurlitzer 200, and how expensive they are, you can understand why Fopenplop asks this question.

@hot88s23 4 года назад

@@alanhaynes418 I had a red Wurlitzer. Are you saying it was valuable?

@eddievanheinous666 4 года назад

@@hot88s23 Heavens no. And if anyone else has any in working condition they need getting rid of, just PM me and I'll "haul them to the dump" for you for free.

@Tadesan 4 года назад

@@BellToneSynthWorks I feel like they were trying to say they liked you... Now I'm perplexed...

@davebellamy4867 2 года назад

10:07 That keynote! Bzzzz! Gorgeous

@ZTAudio 3 года назад

I played a P10 for about 30 minutes back in the day. The idea of having TWO of them blows my mind.

@philipclayberg4928 3 года назад

Now I can see and hear why Prophet synths were such an integral part of Robert Rich's early to mid-1980s sound palette. Thank you for restoring these two synths. I hope that they get used for many years to come.

@fedesartorio 4 года назад

It’s so conforting to know there’s people out there who know how to fix these things! Great video!

@bogdan449 3 года назад

That drone at the end is the greatest thing I've heard. It's elemental.

@Wayne_Robinson 4 года назад

That was a great troubleshooting story! Your mention of Curtis chips got me reading a bit about them and made me notice how similar some Prophet sounds are to Oberheim OB-Xa and probably other users of those chips. As a complete amateur I'm happy with soft synths triggered from a controller with knobs because they fit my music-gear budget but I really admire vintage hardware. Thanks for demonstrating those sounds which got me to crank my speakers up.

@mathumphreys 10 месяцев назад

Wow - two prophet 10s in one room!!

@wa4aos Год назад

Simply amazing. As an engineer, I am very aware of how early power regulator circuits could fail and pass the source voltage b4 regulation and fry many components. That and Tantalum caps add to the headache. I hope you have some good desolderIng equipment like a Hakko or my favorite is Air Vac.. What a headache it must have been to FINALLY clear all of the faults.. Thank you for the persistence, knowledge and labor to allow this instrument to be played for years to come !! Bravo !!

@holdenapplegate7080 4 года назад

Fixing and playing synthesizers: the best job in the Universe! I'm amazed by Your enthusiasm.

@PaulDonnaErik 4 года назад

Great work. So nice to see equipment like this lovingly and professionally restored. Also enjoyed the 40 oscillator drone - bonus.

@guitarstringman7403 Год назад

Very, Very Impressive. Well done!

@pablofarago 2 года назад

Such a wonderfull synth!!! Vangelis used to play one of those, thank you!!

@globalgulag5586 4 года назад

I had my 1964 Farfisa Compact restored recently. It was in the shop six months. Thanks for explaining how difficult this kind of work is. Labor of Love ❤️

@davebellamy4867 2 года назад

In UK or USA?

@discodave6153 4 года назад

Incredible restoration, beautiful synths and lovely playing. Thank you

@adrianreyes4702 4 года назад

You are such an excellent, well versed instructor! Thank you for sharing!

@thefool2007 3 года назад

This is fantastic. You’re an awesome person. Brilliance meets art.

@ssssssssssss885 3 года назад

Love DIL/DIP IC's. Thanks for showing these holy monsters from the inside to those that will never afford them.

@zazoomatt Год назад

What a Project !

@tears_of_heck 3 года назад

Allison you are awesome!

@RandyPiscione 4 года назад

Wow! I feel like I'm a teen in the 1970s again, amazing stuff! Thanks!

@davebellamy4867 2 года назад

Wonderful job! Replaced almost everything!

@FransvandenBergeMuziekschuur Год назад

Just love the way you explain these very complex instruments.

@tonaltti Год назад

That drone sounds really good. I wish I could replicate it with VST stuff.

@boombap28 Год назад

They worked wonders on my SP-12 a few years ago!

@molochlight 4 года назад

Good information thanks for posting. I always heard about the problems with prophet 10's. That's a real labor of love getting to those up to working order again.

@mschorer 4 года назад

Excellent repair job! I once repaired a Polymoog where one broken UA741 took down the whole synth. Its those repairs you‘ll remember forever 😅

@ZOOTSUITBEATNICK1 4 года назад

Ahhh...thanks so much for reminding me of the great time I had with my SC Pro One all those years ago. Wish I still had it.

@jcamp3606 4 года назад

Huge thumbs up! Amazing restoration!

@hidude1130 4 года назад

Great video! I'm glad i found this channel as an audio enthusiast and electronic engineering student.

@SGMGRecords 4 года назад

Thanks so much for taking the time to share some of this arcane knowledge. Amazing work as always!

@wajobu 4 года назад

The foundation of Tony Banks's sound all through the 1980s and into the 1990s. Amazing--Pratt-Read keyboards used to be made in my little village!

@cotton7960 4 года назад

There's a moment in his music video for This Is Love where he nearly drops his Prophet 10 and it's terrifying to watch

@TryptychUK 4 года назад

That would be Ivoryton, Connecticut? I used to deal with Pratt-Read a lot. They made all the keyboards for the American synths, SCI, Moog, ARP, Oberheim, EMU

@arcsound 4 года назад

You must be in southeastern CT, once the ivory piano key industry hub.

@arcsound 4 года назад

rowan cotton I would carry mine up and down a spiral staircase, praying I didn't lose my grip or stumble. Not fun.

@crolodon8024 4 года назад

Awesome and very nice job. Would love to hear more and see more synths!

@superphatal 4 года назад

Ace repair shop. Made my Juno sing!

@jhowe5571 4 года назад

You just made the jaws drop and eyes go crazy for every synth afficiano, geek and nut who instantly clicked on the vid link!!! 😱😵😜🎉🎊

@Zinfidel1 4 года назад

That is a beastly synth! You could add some wheels and drive it around. "Honey, I'm taking the Prophet to work.' "Okay! Don't forget the camping gear in the trunk!"

@matthewghere7765 4 года назад

This video is my exact niche. I would love to see much more of your work!

@joselares9031 4 года назад

Very nice Sound...¡¡¡ Stunning reverb...Great Job...YEAH...

@maker-matt 4 года назад

I actually met Dave in the early years. He was building the "Programmer" the "sequencer" and the P-5 was JUST in production - San Jose in 1976 If I remember correctly

@fallingmanjutsu 4 года назад

Thank you for this video and for posting videos again in general. I am very much looking forward to more content from your channel! I'm at a loss for words for 2 prophet 10's in the same room. I really believe instruments have some kind of weird destiny thing where they are alive and seek out the right owners and doctors, in this case.....Wizards!

@fickfehler3866 4 года назад

You are Synth Goddess ! Your knowledge & quality of work is tremendous ! It's a shame 90% of music these days is thru mouse clicks, quantizing, and autotune ! There's a reason why music from decades ago will still outlast anything made today ! Keep these precious babies alive !

@johnforguites4800 4 года назад

nice work and great trouble shooting

@goodun2974 4 года назад

Your fellow You Tuber Fran Blanche of FranLab is also in Philly somewhere; she builds guitar effects pedals and all kinds of other unusual repairs, builds and rebuilds. When this insanity is over, perhaps you two should meet. Kindred Spirits?

@Petertronic 4 года назад

I was wondering if she knew Fran

@albertoduran1955 2 года назад

Amazing work! Congrats! :D

@peterbronez1188 3 года назад

Solid Tame Impala vibes around 10:00!

@vocoloco8731 8 месяцев назад

Currents 💜

@mattjbyron2010 4 года назад

that bit at 1145 is insane. great work.

@robertsyrett1992 4 года назад

I love how they printed little drawings on the circuit boards of those old prophets.

@Rhythmicons 4 года назад

Absolutely loving this, especially after 10:58.

@Godzilla2k69 4 года назад

Reminds me of my days at EV in Buchanan repairing mixers, amps, EQ's, x-overs and so on. Yes. The IDC ribbon cables cause many problems. That was a wonderful time for music and hardware development.

@samikalastaja 4 года назад

Very cool to see inside of this synth and thanks for telling about the restoration process.

@flippinguitars6566 4 года назад

Love the technobabble on the repair!

@blackwatch_TV 4 года назад

extraordinary tech work and descriptive breakdown! judging by the views, reactions and likes this video has well deserved momentum - Subscribed

@pianicolas5896 4 года назад

What an amazing work! it sounds sooooo good!!

@Pauleyh2 2 года назад

Not only do you have awesome knowledge your also an amazing keyboardist wow!!

@pauldncn1 4 года назад

Thank you it's great to see Inside one of these. I did wonder how they put them together Thank you from the UK

@clutchbasket5764 4 года назад

Please make more videos of your work. This was outstanding!

@Skootavision 4 года назад

Got to be my dream job! I enjoyed this very much, thank you. Have never even seen one of these in person but TWO whaaa?! Awesome

@davidfreeman4808 4 года назад

WOW! Thanks for bringing TWO P10s back from the other side :-)

@MelissaAtwell 4 года назад

Absolutely fascinating! Thank you for sharing this. Congratulations on the restorations!

@thegreaterconundrum 3 года назад

Brilliant!

@leukostad1592 Год назад

Such a distinct sound. There was so much wrong with that instrument, I admire the work that went into it.

@kevinnolan3592 4 года назад

Absolutely amazing work and a magnificent video - thank you. I've just received my restored and (Winecountrysequential MIDI-fied) Prophet 10 back from Kent Spong. Owner of two T8s too. Passed through some chorus and a modern reverb, they are all immense.

@officialmikethompson 4 года назад

2 T8's eh? Wow. I hosed mine last year while re-socketing chips on the digital board... :-(

@michaell431 3 года назад

Very cool video, and how awesome these Prophet's sound. I'm very much into synthesizers and the "tech stuff" for decades.. BTSW, You really know your sht.! Thanks for sharing video's about it, much respect.

@plp9894 4 года назад

Sounds like the sounds they may have used on "blakes 7" an old British Sci fi show from the 70's.

@raheemhosein-isolate333 4 года назад

I was wondering what it reminded me of- Yes good call mate.

@stationlightyears1532 4 года назад

@@raheemhosein-isolate333 Yamaha GX1 used extensively by Dudley Simpson on that show! Not sure about P10, but definitely big Yamaha sounds in there. Great soundtrack to those shows!

@GNeuman 4 года назад

Haha... Spot on! Great music but the worst not-so-special effects and wooden acting in BBC scifi history. 😂😂😂

@subtropical-yearning 4 года назад

I'm so glad to see this amazing channel posting videos again! I know it probably gets in the way of your actual work, but it does make my day.

@BellToneSynthWorks 4 года назад

Glad you enjoy it! We're trying to find time to do more.

@devaux1904 4 года назад

Thanks so much for sharing the inside and out... Amazing!

@brianostube 4 года назад

VERY cool, appreciate all the techie details you provide showing how these keyboard instruments were put together! Great work - I know who to contact if I ever need any synth repairs!

@marienbad2 4 года назад

Please make more videos, this was ace! Also, "Spooky Gary Numan sound" was spookily accurate!

@19del69 Год назад

Fascinating

@OPTIONALWATCH 4 года назад

Very entertaining. I also loved what you played.

@basehead617 4 года назад

Awesome video

@eeddingt 4 года назад

“A digital-side apocalyptic event the likes of which we’d never seen before.” Lol. Oooo, this is getting good!

@notahat 4 года назад

That’s some very impressive restoration work!

@nreyntje 4 года назад

Very cool!!

@danbient 4 года назад

Great work Alison!!! And a lot of it!

@johnthrob2486 4 года назад

You are seriously cool. Cheers. More please!

@mathieupe666 4 года назад

The drone in the last minute is sample gold.

@SPAZZOID100 4 года назад

Better to program it from scratch.

@yaniv-nos-tubes 4 года назад

love those hypno sounds!

@melodikmusic 4 года назад

Wow! Just wow!

@DreamlordRecordings 4 года назад

Wow ! That reminded me of Blake's 7 !! Awesome !

@kenny.maytum 4 года назад

Brilliant! Dave Smith would be proud.

@Transterra55 4 года назад

Super Cool....such resonance!

@eframp 4 года назад

Fistfuls of oscillators. Love it!

@ronalddaub7965 3 года назад

And I thought my Baldwin fun machine had capacitors

@FortyTwoAnswerToEverything 4 года назад

I was just immersed into a Bladerunner-type movie

@BarryWarne 4 года назад

right there with you

@ozhalljr 3 года назад

Impressive!

@skarajmusic 4 года назад

Absolute heroes.

@ConstantinPhillipou 2 года назад

Great play but whatever you did at 11:00 and after is 5 stars! What settings are these, I need that sound ;)

@ghavinga 4 года назад

Very impressive, really good to know, see and hear it is possible to repair the 'old' electronics inside a classis synth.

@rolandmarckwort 4 года назад

Wow - incredible killer sounding beasts!!

@expandingknowledge8269 4 года назад

Only saw one, Prophet 10, in a vintage guitar 🎸 shop in Keene N.H., And it was in rough shape. Sure love 💘 the old analogs. 😃

@VimyScout 4 года назад

Lovely to hear

@martinnissfolk180 3 года назад

Lovely equipment. I'm your new fan.

@robarkskillie960 4 года назад

Thanks for the walkthrough, I appreciate the tenacity required to wrap your head around the circuitry let alone coming up with a strategy to tackle the repair. Ever use an IR camera to determine the problematic IC's/ discrete components?

@BellToneSynthWorks 4 года назад

I would love to get an IR camera, I've seen Markus Fuller use one in one of his videos and I was jealous!