SP-1200 * PROTOTYPE * with Riley Smith (OG e-mu, Sequential Circuits)

video upload by Manuel Clement

"My friend Riley Smith walks you through my beautiful E-mu SP-1200 engineering prototype. Riley is a legend. OG from Sequential, decades at e-mu, and more. Enjoy!"

Alpha Juno VCF MOD

video upload by Maffez Synthmods

"Qiick an dirty demo of two modifications for the Roland Alpha Juno Series. 1. Self-oscillating filter, 2. Variable chorus depth. Check modwiggler forum under: https://www.modwiggler.com/forum/view..."

Gxmnopedie#1

video upload by sequentix

Yamaha GX1 with the lid up / open. Note the individual voice boards and ribbons.

ARP 2600/3620 Duophonic Keyboard. Semi-Modular Analog Synth

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

"The ARP 2600/3620 Duophonic Keyboard is a vintage original semi-modular analog synth produced by ARP. With 49 keys and a semi-modular design, this synthesizer offers a unique blend of analog sound and modular functionality. It features input/output ports including CV out, trig in, CV in, gate out, gate in, and trig out, allowing for versatile connectivity with other musical equipment. The ARP 2600 also boasts pedal inputs, faders, built-in effects, and speakers, making it a versatile and powerful tool for creating a wide range of sounds and music compositions. Made in the United States, this classic synthesizer is still highly sought after by musicians and producers looking to add its distinctive sound to their work."

Pic of the inside below.

CLICK FOR MORE »

Oberheim Two Voice - Portamento/ Tune control section - Version 2

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

Additional Analog U.S. Listings

CLICK FOR MORE »

Ensoniq ESQ-1 Analog/Digital Polyphonic Synthesizer “Metal version” w/ Factory Cassette Tape & Cart

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

"Just checked by tech. This is the metal version. OS 2.0. Has the Music Pack Cartridge inside. New battery. The battery was relocated to the right side of the keyboard as it was originally soldered in the main board. You can just pop a new one in next time it needs a new cThis new battery should last for a very long time. Original sounds were also loaded back in.

It includes the original manual, sustain pedal, factory casette (did not test this), and power cord."

CLICK FOR MORE »

First 8-Voice Jupiter 8 Clone – Sound Demo (No Talking)

video upload by ACME SYNTHWORKS

"This is the world’s first fully 8-voice Roland JP8 clone.

Eight discrete voices.
Original voice architecture.
14 Bit Interface Board.
The circuit follows the original Jupiter-8 design.
All functions of the original instrument are supported.

The envelopes are implemented in analog form using different ICs, while preserving the original behavior.

The filter section uses IR3109 and BA662.

A large portion of the circuitry has been implemented in SMD to simplify assembly and improve manufacturability.
This video contains raw sound examples only.
Direct audio recording.
Only a subtle external delay was added."

Dave Smith Instruments Mono Evolver Keyboard PE Potentiometer Edition SN 00254

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

"Dave Smith Instruments Mono Evolver in fantastic condition. This has the upgraded PE or Potentiometer Edition boards, but the original endless encoder boards are included if you wanted to revert it!

This is an amazing and very unique sounding synth which I love, but have to let go. It has never been gigged and has only had light use in a non-smoking home studio.

There are no scratches on the wood end-cheeks or the front panel or keys, there is a small mark on the rear visible in the photos. It is generally in very good condition, near mint.

It comes with the power cable and plug adapters for different regions. It will be packaged extremely carefully, so it arrives safely, with insurance."

CLICK FOR MORE »

Circuit board with filter modules for Yamaha SY-1 or SY-2 Vintage Synthesizer

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

Yamaha NE 10400 VCF-LPF 4Z24
Yamaha NE 10500 VCF-HPF 4Z27
Yamaha NE 10800 EG-VCF 4Z27
Yamaha NE 11500 VCO-III 4Z27

CLICK FOR MORE »

ARP QUADRA PROGRAMABLE SYNTHESIZER

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

Pics of the inside below.

CLICK FOR MORE »

NEAR MINT Roland Jupiter-8 w/MIDI via Korg KMS-30 Roland MD-8 (both included)

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

Pics of the inside below.

Jupiter-8 SN 100744
KMS-30 SN 007257
MD-8 SN 391534

"This Roland Jupiter-8 (JP-8) is being sold by the original owner.

[Innermuze, LLC.] was hired to make sure that there are no issues with the unit and take care of the listing for him.

- The power supply has been recapped.

- various IC's (logic chips and op amps), as well as other components,were replaced in various sections to ensure that all functions are fully working.

- all sliders were removed and internally cleaned.

- the material between the controls and the face plate has been replaced.

- the memory battery has been replaced.

- it has been fully calibrated, and the factory patches are presently loaded.

- This JP-8 is an early version, and it was configured to use MIDI via the additional units that are included. The configuration was performed by someone in the Roland Corporation by request of the original owner.

- The serial number of this Jupiter-8 is 100744 and is factory set for 117vac."


"ABOUT ME -

I am the owner and operator of Innermuze, LLC.

I have over 30 years of experience with electronic music equipment repairs, restorations, and modifications.

I have worked for such people and studios such as Hanz Zimmers Remote Control Productions; Green Days Jingletown Studios;
Sound Farm; Joseph LoDuca; Neil Young; Beastie Boys; and many more.

I have experience with many manufacturers such as Moog, SSL, Neve, Roland, Korg, Eventide, Yamaha, Gates, Technics, Alesis, Sequential Circuits, E-Mu, Peavey, Pioneer, and many more.

I repair analog and digital gear alike, including such items as synthesizers/keyboards, drum machines, amplifiers (solid state and tube),
mixing consoles/boards, effects units and processors, turntables, dj controllers, audio monitors, and much more."

CLICK FOR MORE »

Building a Minimoog Model D From Parts

video upload by synthpro

"Hey Guys,

In this video, I bring you along the adventure of building a really nice Minimoog from parts I have had over the years.

Michael heard this unit on a little Instagram post I made when I first started testing to see if I could get a working unit from the parts and immediately sent me a down payment. It took me about 2 years to source everything needed but Minimoog SN: 5250 now lives a healthy life once more.

Thanks for watching!

Sincerely,
Jareth"

Repair Report: BOSS DR-55 Dr. Rhythm Foot Switch Restoration

This one is in via supporting member GreyScale aka plantssystem who had the following to say:

Restoring a Classic: BOSS DR-55 Foot Switch Jack Replacement

"The BOSS DR-55 is a staple of early 80s minimal wave and synth-pop, but its plastic jacks are often a point of failure after four decades."

The Issue

The unit arrived with a missing original foot switch jack, rendering remote Start/Stop operations impossible. To ensure a rugged and reliable fix, I decided to upgrade the component rather than searching for a rare vintage plastic replacement.

The Solution: Switchcraft 12A

I opted for a Switchcraft 12A 1/4" Mono Jack (Shorting/Tip-Shunt). This is a classic choice for vintage gear due to its high-quality metal construction and reliability.

* Fit: The Switchcraft 12A fits the DR-55 chassis, though it requires careful grounding to the metal frame/PCB common.

* Wiring: Wired specifically to handle the DR-55's Start/Stop trigger logic.

Results

The repair was a total success. The unit now responds perfectly to a standard momentary foot switch.

* Start: Functional.

* Stop: Functional.

* Reliability: The metal Switchcraft jack provides a much more secure connection than the original plastic housing.

This DR-55 is now back in the studio, ready for another 40 years of 16-step sequences.

CLICK FOR MORE »

Roland JX-3P Vintage Analog Synthesizer 1980s Fully Serviced And Calibrated

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

Pics of the inside below.

CLICK FOR MORE »

Bringing a vintage Italian polysynth Siel LX61 back to life and looking at the insides

video upload by Ted murena

This appears to be the first post to feature the Siel LX61.

Sequential Circuits Prophet VS Rackmount SN 0276

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

Pics of the inside below.

CLICK FOR MORE »

Details on the New Knif Audio BBD

You might remember the quick demo of the Knif Audio 5U BBD Delay Demo posted back in September. New details are in:

BBD The analog delay to rule all analog delays

-Stereophonic analog bucket brigade delay with
-precision analog clock generators,
-variable frequency anti-alias and reconstruction filters for wide frequency response and -advanced companders and careful clock signal handling for high signal-to-noise ratio
-Superb-sounding tube distortion stage for the delay path with four NOS SQ pentode tubes
-Six 4096-step BBD ICs for 20ms-600ms (1200ms in mono) delay time
-Seven different operational modes, including X-fed feedback signals
-Versatile LFO
-Tempo divisions
-Tap tempo and external sync
-Beautiful, solid walnut housing and engraved and color-filled panels

Overview

Knif BBD is a stereophonic analog bucket brigade device (BBD) delay. It is a no-compromise device rich in features. What sets it far apart from any other device in the market are the unique self-adapting anti-aliasing and reconstruction filters which provide the widest possible frequency response for any given delay time setting without any aliasing.

The unit features in total six 4096-step BBD ICs which results in maximum delay time of 600 ms for a stereo signal and 1200 ms for a mono source. The device has got seven operational modes for different effects and comes with a wide range of control signal inputs and internal control possibilities. The unit features a microcontroller for relay switching and timing tasks such as tap tempo and time division. However the signal chain and clock generation are fully analog and built using state-of-the-art components.

The other very unique feature to the device is a vacuum tube distortion stage located before BBD circuits. It consists of four NOS Special quality pentodes in total. The amount of distortion is continuously adjustable without affecting the overall signal level. In addition to this, the spectrum of the distortion can be selected.

https://www.knifaudio.com/bbd

CLICK FOR MORE »

EMS Synthi 100 Reapir Part 3

video upload by Really Nice Audio

Really Nice Audio EMS Synthi 100 Repair

"Sorry I could not film too much as there were student rehearsals taking place and an interview about to take place in the Pete Townshend Studio at the University of West London
https://www.uwl.ac.uk/study/study-fac...

Music from my ATMOS album Height Supremacy, a track called 'Miles From Cornwell'
I thought a very apt track to play as EMS is based in Cornwell."

Oberheim DX MIDI Upgrade

video upload by jakeschrock

"Installing the Electrongate DX MIDI kit upgrade"

ELEKTRON Model Samples - ENCODER REPAIR!

video upload by ST Modular (Stefan)

"My Elektron Model:Samples encoder started to move slowly and skip values.😵‍💫

So I reached out to Elektron, and they were incredibly supportive and sent me two replacement encoders 🙌

After the repair, everything works perfectly again! It honestly feels like a brand-new machine! ✨

#Elektron #ModelSamples #SynthRepair #GearFix #ElectronicMusic #DIYRepair"