(USED) Peavey Architectural Acoustics FO-116 Freq-Out 24-Bit Anti-Feedback DSP Processor
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Peavey Architectural Acoustics FO-116 Freq-Out 24-Bit Anti-Feedback DSP Processor
A professional rack-mount anti-feedback processor from Peavey's Architectural Acoustics line — 16 dynamic notch filters, 24-bit DSP, and a purpose-built "seek and destroy" algorithm that finds and reduces feedback before it becomes a problem.
Who This Is For
The FO-116 Freq-Out was built for professional live sound and installed audio environments where feedback control needs to happen automatically, reliably, and without coloring the program audio. The Architectural Acoustics line by Peavey served installations in some of the most demanding commercial audio environments — houses of worship, auditoriums, convention centers, and large-format live sound systems — and the Freq-Out was a core tool in that ecosystem. If you run live sound, manage a house of worship PA, operate a school or meeting space audio system, or need a dedicated single-channel anti-feedback processor in a rack, this used unit offers professional-grade automatic feedback suppression at a working price. The 16-filter array covers a wide range of potential problem frequencies, and the unit's front panel controls — Bypass, Reset, Wide, Lock, and Panic — give the operator complete real-time command over how aggressively the processor engages.
Key Highlights
- 16 dynamic notch filters configured for 1/12 octave performance in normal operation
- 24-bit DSP processing — "seek and destroy" algorithm automatically finds and attenuates feedback frequencies
- Attenuation uses only as much reduction as necessary to contain feedback — minimal impact on tonal quality
- Wide button expands filter bandwidth for broader notch coverage when needed
- Lock button freezes current filter configuration, preventing further frequency searches
- Panic mode engages rapid, aggressive response to sudden or extreme feedback events
- Bypass switch removes the unit from the signal path completely
- Reset clears current filter actions and returns to idle state
- Front panel disable switch on rear panel — prevents unauthorized adjustment in installed systems
- Rear panel startup memory switch — selects preprogrammed mode or last-used settings on power-up
- Balanced combo XLR/1/4" TRS input; separate balanced male XLR and 1/4" TRS output
- RS-232 DB-9 port for PC interface
- Single EIA rack space — one rack unit height
Why You'll Love It
Features
The 16-filter array with 1/12-octave resolution gives the Freq-Out enough precision to target problem frequencies narrowly, applying just enough attenuation to break the feedback loop without creating audible dips in the program signal. The combination of Bypass, Reset, Wide, Lock, and Panic controls gives the front-of-house operator genuine real-time control over the processor's behavior — not just an on/off switch.
Advantages
The rear panel front-panel-disable switch is a thoughtful feature for installed systems — once the settings are dialed in and locked, the unit can be configured so untrained users can't inadvertently adjust it. The memory startup switch lets you choose between loading a preprogrammed configuration or the last active settings every time the system powers up, which matters in permanently installed applications where consistency is essential.
Benefits
Feedback suppression that works automatically in the background means the sound operator can focus on the program mix rather than constantly chasing ringing frequencies. The Lock function is especially practical for houses of worship and fixed installations — once the room's problem frequencies are mapped and addressed, locking those filters keeps the system stable throughout the event without further intervention.
Great Fit For
- Houses of worship needing automatic feedback control in the main PA signal chain
- Schools, meeting rooms, and auditoriums with installed sound systems
- Live sound engineers who want dedicated anti-feedback processing separate from the main console
- Small to mid-sized venue operators who want a professional rack-mount feedback solution
- Touring sound engineers looking for a reliable feedback processor at a used price
- Audio installers specifying feedback control for a new or upgraded system
How It Works in a System
The Freq-Out sits inline in your signal chain — typically between the mixer output and the power amplifier input, or in an auxiliary send/return path. Once in place and powered on, the 16 notch filters remain idle until the processor's internal spectrum analysis detects a frequency building toward feedback. When it finds one, the algorithm engages a minimal notch at that frequency — just enough to break the feedback loop — and continues monitoring. The filters are narrow enough that the notching is virtually imperceptible to the audience.
For situations where a room consistently rings at certain frequencies, the Lock function lets you capture and hold the current filter positions, essentially building a custom EQ correction profile for that space. Wide mode broadens the filter bandwidth for rooms where a wider notch is more effective than a narrow one. The Panic function is the emergency option — if feedback erupts suddenly and severely, one button press drives the unit into aggressive suppression mode immediately.
As a used unit, we encourage you to contact us for details on condition before purchasing. Call or text us at 814-371-5666 with any questions.
Specifications
Feedback suppression isn't glamorous gear, but ask any experienced sound engineer what's actually kept a service, a show, or a corporate event from going sideways — and a reliable anti-feedback processor is usually part of that story. The Freq-Out is a workhorse unit from a brand that built its commercial audio reputation on exactly this kind of dependable, professional signal processing. At used pricing, it's a practical solution for any system where feedback control needs to be handled automatically and stay out of the way.
If you want to know more about the condition of this specific unit, or want to talk through how it would fit into your system, reach out — we're glad to help sort it out. Call or text us at 814-371-5666.