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Rolls MO2020se Testoscillator Sine/Square Wave Generator

Sine and Square Wave Signal Generator for Audio Testing and Troubleshooting
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Item ID: MO2020se
Rolls MO2020se Testoscillator Sine/Square Wave Generator
Price:$119 and 00 cents
$20.00 suggested monthly payments with 6 month financing‡

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Rolls MO2020se Testoscillator Sine/Square Wave Generator
In Stock!
Price:$119 and 00 cents
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This article was written by our product research team. Get to know them!

Easier Audio Testing, Right Now

The Rolls MO2020se Testoscillator is a compact signal generator for audio testing, tuning, and troubleshooting that ensures equipment works as it should. The MO2020se adds even more outputs and an expanded -30dB pad to the original design of Roll’s MO2020 test box. At its core, the MO2020se generates one focused sound as either a sine or a square wave with a huge selectable range frequency range of 20Hz to 24kHz. Each waveform’s level has its own dedicated control knob, and you can dial in the Testoscillator’s pitch via the box’s frequency knob. Because the Testoscillator’s design is largely analog, no apps, software, or Wi-Fi are necessary for setup and use. Its ability to streamline workflow and test sessions has made this box a sleeper hit among Sweetwater audio professionals.

Ample inputs and control options

With abundant ways to hook up a Testoscillator to your gear, this device is great for troubleshooting, tuning, testing, and more. Outputs are separated by wave form; options for sine wave output include XLR, RCA, and unbalanced 1/4-inch jacks, while square wave output runs through a single unbalanced 1/4-inch port. Also onboard is a useful VCO (voltage-controlled oscillator) input for externally controlling the Testoscillator with another device. The VCO option allows for expanded testing options such as faster signal sweeps, and it receives power of 1.2 to 5 volts of direct current.

Rolls MO2020se Testoscillator Features:

  • Update of the MO2020se Testoscillator with more output options and hardware improvements
  • Standalone design — no software, apps, or Wi-Fi required
  • Sine or square wave sound generation
  • Frequency range: 20Hz–24kHz
  • -30dB pad for attenuation and referencing
  • Great for testing all kinds of speakers and subwoofers as well as for tuning and troubleshooting work
  • Core output level: 11dB sine wave, 14dB square wave
  • Runs off 12–15V power (Rolls power supply included)
  • Sine wave outputs: XLR, RCA, and 1/4-inch unbalanced
  • Square wave outputs:1/4-inch unbalanced
  • 1/4-inch power-bearing VCO input for external control and frequency sweeps

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Tech Specs

  • Type: Signal Generator
  • Compatibility: Outputs: XLR, RCA, 1/4" TS
  • Features: Sine Wave, Square Wave
  • Power Source: 12-15V DC (power supply included)
  • Manufacturer Part Number: MO2020se

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Reviews

Nice product - does what it is supposed to do
I bought this sine wave generator in the hope that I could use it with my graphic equalizer to balance out my audio system. I think that I will also need an audio meter. A work in progress.
Music background: Music teacher and professional musician - retired
Perfect for Home Theater testing
Best for the money compared to so much crap out there. Made in USA was a bonus. Worked perfectly for testing my Polk subwoofers that were having some plate amp failures. This solid unit allowed me to test the replacement plate amps thoroughly and allowed me to check for any internal vibrations or resonances as well. My only initial criticism was that the Sine RCA phono jack was soldered to the internal circuit board so skewed that my hookup cable plugs couldn't initially plug into the unit because there wasn't even room for the RCA phono plug shielding to fit into the case. It had to be forced in. The DC power jack was also soldered in skewed and looks wonky but it is just a cosmetic issue. I would still buy it again because it is a great little unit. Must have been a Friday afternoon "build".
good unit
This is a good unit, the controls work well, the sine is clean. Be aware that the XLR output is not balanced.
Music background: retired studio musician, retired EE