The Return of an Analog Synth Classic Orlando FL

In contrast to most second comings of great analog synth names, the SEM is almost identical to the original. In fact, the external cosmetics are changed far more than the innards.

Keller Music Co
(407) 841-4251
Po Box 873
Orlando, FL
Types of Instruments Sold
Acoustic Piano, Digital Piano, Electronic Keyboard, Organs

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Georges Music Of Floria Inc
(407) 352-8000
6817 Visitors Cir
Orlando, FL
Types of Instruments Sold
Electronic Keyboard, Band & Orchestral, Drums & Percussion, Sound Reinforcement, Recording Equipment, Guitars & Fretted Instruments, Print Music, DJ Equipment

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Dr Music
(407) 682-6111
481 N State Road 434
Altamonte Springs, FL
Types of Instruments Sold
Electronic Keyboard, Band & Orchestral, Drums & Percussion, Guitars & Fretted Instruments, Print Music
Store Information
Instrument Rental: Yes
Lesson Information
Lessons: Yes
Instrument Repair Information
Repairs : Yes

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Lewis Music Store
(407) 846-2303
117 Broadway
Kissimmee, FL
Types of Instruments Sold
Digital Piano, Electronic Keyboard, Band & Orchestral, Drums & Percussion, Sound Reinforcement, Recording Equipment, Guitars & Fretted Instruments, Print Music
Store Information
Instrument Rental: Yes
Lesson Information
Lessons: Yes
Instrument Repair Information
We service most any instrument repairs you might need!
Hours
Monday - Friday 10:00am-6:00pm
Saturday 10:00am-5:00pm
Sunday Closed

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Tuned Up Music Ctr
(407) 302-3166
111 E 1St St
Sanford, FL
Types of Instruments Sold
Digital Piano, Electronic Keyboard, Band & Orchestral, Drums & Percussion, Sound Reinforcement, Recording Equipment, Guitars & Fretted Instruments, Print Music
Store Information
Instrument Rental: Yes
Website Sales: Yes
Lesson Information
Lessons: Yes
Instrument Repair Information
Repairs : Yes
Hours
Monday - Thursday 10:00am - 7:30pm
Saturday 10:00am - 6:00pm
Closed Sundays

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Discount Music Ctr
(407) 423-4171
3301 Gardenia Ave
Orlando, FL
Types of Instruments Sold
Acoustic Piano, Digital Piano, Electronic Keyboard, Band & Orchestral, Drums & Percussion, Sound Reinforcement, Recording Equipment, Guitars & Fretted Instruments, Print Music, DJ Equipment

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Yrs MIDI Systems
(407) 331-5303
178 Oxford Rd
Fern Park, FL
Types of Instruments Sold
Electronic Keyboard, Recording Equipment
Store Information
Website Sales: Yes
Lesson Information
Lessons: Yes
Clinics: Yes
Instrument Repair Information
Computer, MIDI, Digital Audio systems, devices, software/hardware, installation, service, configuration, set-up, etc.
Hours
Store Hours:
Monday thru Saturday
10am - 7pm
Studio Hours:
7/24 - By appointment


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American Music Inc
(407) 332-1477
667 Florida Central Pkwy
Longwood, FL
Types of Instruments Sold
Digital Piano, Electronic Keyboard, Band & Orchestral, Drums & Percussion, Sound Reinforcement, Recording Equipment, Guitars & Fretted Instruments, Print Music

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Jammers Music Center
(407) 847-6744
23 Broadway
Kissimmee, FL
Types of Instruments Sold
Digital Piano, Electronic Keyboard, Band & Orchestral, Drums & Percussion, Sound Reinforcement, Guitars & Fretted Instruments, Print Music

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Sam Ash Music
(407) 896-5508
4644 E. Colonial Drive
Orlando, FL
 
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The Return of an Analog Synth Classic

0310 Tom Oberheim SEM

In 1974, Tom Oberheim released the first Synthesizer Expander Module, or SEM. Players loved this easy-to-use, ballsysounding synth, and its unique multimode filter gave it a distinctive sound. The SEM went on to become the basis for some of the world’s first polyphonic synths, such as the Oberheim Two-, Four-, and Eight-Voice, which were essentially multiple SEMs in the same cabinet as a keyboard. Beginning in the late ’70s, these gave way to more compact analog polysynths (the Oberheim OB-Xa behind Paul Shaffer on page 28 among them) but analog tone nuts still hunt for original SEMs. Much to their delight, Tom has now reissued it.

HANDS-ON

  1. You get 33 patch points on 1/8" mini jacks. The SEM is compatible with all one-volt-per-octave analog synths, transforming the SEM into a powerful synth expander module, hence the name!
  2. Large coarse tuning knobs for each oscillator offer a five-octave range; small pots above fine-tune over a range of about a major third.
  3. Unique multimode filter operates in lowpass and highpass modes and is continuously variable between modes with a knob — at 12 o’clock it’s a notch filter. Slide switch activates bandpass mode.
  4. These knobs combine the oscillator waveform and mixer functions found in separate sections on other synths: Center is off, left makes the sawtooth louder, right does the same for the pulse wave.
  5. Slide switch bypasses the VCA. Translation: infinite sustain. This also lets users run external audio inputs through the filter without triggering the envelopes — handy.

THE SIMILARITY STARTS HERE

In contrast to most second comings of great analog synth names, the SEM is almost identical to the original. In fact, the external cosmetics are changed far more than the innards. Tom tells us that just one component was changed from the original design due to lack of availability, and it doesn’t affect the sound. He kept the wedge-shaped beige case, and even the knobs are the same parts as on the originals. Some details have changed: two separate tuning knobs work better than the original’s touchy concentric arrangement. The biggest difference is the 33-jack patch panel. Since “bringing out” patch points is a common mod on originals, Oberheim took it one more step — a large step — providing fantastic flexibility for interfacing with other analog gear. Modular and Moogerfooger maniacs rejoice!

0.0000midipanel MIDI AND THE SEM The SEM’s extensive control voltage I/O is a boon for serious fans of analog, but what if you want to just wail on it from your MIDI keyboard? Tom Oberheim will soon release the SEM MIDI edition. This replaces the SEM’s left-side patch panel with a nicely outfitted MIDI-to-CV converter, and adds rear-panel MIDI jacks. Along with standard note on/off reception, there’s an auxiliary CV that you can control with your choice of velocity, mod wheel, or other continuous controllers. The aux CV destinations include oscillator frequen...

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