FU-EQ215 – Dual 15-Band Graphic Equalizer
Professional tone shaping for live sound, studios, and installations.
Professional Dual 15-Band Graphic Equalizer for Live and Studio Applications
The FU-EQ215 dual 15-band graphic equalizer is engineered to deliver precise tonal shaping and reliable signal control in professional audio environments. Designed for live sound engineers, studio technicians, and installation professionals, this unit offers ±12dB of boost or cut per band across two independent channels. Whether correcting room acoustics or refining instrument tone, the FU-EQ215 gives you immediate, tactile control over your sound.
With an extended frequency response and low total harmonic distortion of just 0.05% at 1kHz, this dual 15-band graphic equalizer ensures clarity without coloration.
Each channel of the FU-EQ215 features 15 frequency bands with ±12dB adjustment, allowing precise frequency sculpting. The integrated low-cut switch eliminates unwanted rumble and subsonic noise, improving system clarity and protecting speakers from excessive low-frequency energy.
Balanced XLR and ¼” TRS inputs and outputs guarantee clean signal transmission with minimal noise, even across long cable runs. A signal-to-noise ratio exceeding 90dB ensures that adjustments remain transparent and professional.
Bright LED level indicators provide immediate visual feedback, while bypass and in/out controls allow instant comparison between processed and unprocessed audio — an essential feature for accurate tuning.
Imagine walking into a venue with problematic acoustics. Low-end buildup, harsh upper mids, feedback creeping in. Instead of fighting the system, you shape it. The FU-EQ215 dual 15-band graphic equalizer allows you to surgically remove troublesome frequencies, enhance warmth, and balance vocals and instruments with confidence.
In studio settings, it becomes a tonal sculpting tool — subtle adjustments that refine a mix without digital artifacts. Its rugged rack-mount chassis makes it equally at home in touring rigs or permanent installations. And with universal 110V–220V compatibility, it performs reliably anywhere in the world.
This is not just EQ. It is control, transparency, and precision in physical form.
Upgrade your signal chain with the FU-EQ215 dual 15-band graphic equalizer and experience professional-level tonal control. Perfect for live sound reinforcement, recording studios, rental companies, and installed systems, it delivers clarity, flexibility, and dependable performance every time you power it on.
Take command of your frequencies. Shape your sound with confidence.
External Resources and Technical Information:
- Professional Audio Line Array Design Principles
- Speaker Rigging Safety Standards
- Acoustical Society of America – Sound Reinforcement Resources
Professional Applications
- Feedback Elimination in Live Sound – Identify problematic frequencies (typically 250, 500, 1kHz in venues) and apply narrow-Q cuts to eliminate ringing while preserving tone.
- Monitor Mix Equalization – Shape individual monitor sends for instruments/vocals with surgical precision, preventing buildup of competing frequencies
- System Room EQ – Correct acoustic room modes (low-frequency modes near 63, 125 Hz common in small venues) improving clarity and impact.
- House of Worship Sound SystemTone Shaping for Non-FEUR Loudspeakers – When using third-party speakers, parametric EQ enables frequency response optimization without external crossovers.
Why Choose FEUR
Choosing a dual 15-band graphic equalizer from FEUR PRO means selecting reliability, transparency, and professional-grade construction. Our signal processors are designed to maintain signal integrity while offering intuitive hands-on control.
The FU-EQ215 combines balanced connectivity, rugged build quality, and precise analog circuitry to ensure consistent performance in demanding environments. Whether deployed in touring systems, houses of worship, studios, or rental fleets, FEUR equalizers provide dependable tonal control without unnecessary complexity.
FEUR PRO delivers professional audio performance aligned with international standards while remaining accessible for Latin American markets.
| Input impedance | 22KΩ |
| Output impedance | 200Ω |
| Frequency response | 20Hz – 20KHz +/0-12dB |
| Balanced gain | 12dB/-12dB |
| Total Harmonic wave distortion | 0.05% 1KHz |
| SNR | 90dB |
- Premium Product Certification: Awarded for superior build quality exceeding industry standards
- RSA Sound Award: Recognition for innovation in professional active speaker design
- NAMM Featured Product: Showcased at National Association of Music Merchants trade show
- CE Certified: Complies with European safety and performance standards
- FCC Part 15 Class B: Electromagnetic compatibility certification for use in residential environments
- 3-year limited warranty on parts and labor
- 24/7 specialized technical support
- Authorized service network in Latin America and USA
- Parts availability throughout product lifecycle
- Complete technical documentation (manuals, diagrams, specs)
- Training for distributors and integrators
- Firmware updates (select models)
Q1: How do I align subwoofers to main loudspeakers?
A: Subwoofer alignment requires three adjustments[1][8]:
- Frequency crossover – Set crossover frequency 0.5 – 1 octave below lowest midrange driver resonance (typically 80-120 Hz)
- Phase alignment – Adjust subwoofer delay (typically 2-10ms) so subwoofer transients arrive simultaneously with main loudspeaker output
Level matching – Use parametric EQ and output trim to match subwoofer and main output levels, creating smooth transition without doubling or cancellation[
Q2: How do parametric equalizers differ from graphic equalizers?
: A graphic equalizer has fixed frequency bands (typically 31-bands at standard frequencies), while a parametric equalizer allows you to select any frequency you want to boost or cut. Parametric EQ also offers variable Q factor (bandwidth), enabling either broad tonal correction or surgical elimination of specific problem frequencies like feedback. Bottom line: Parametric EQ is more flexible and precise; graphic EQ is more straightforward but less surgical.
Q3: What is FIR filtering and why do audio professionals prefer it? A: FIR (Finite Impulse Response) filters calculate crossovers mathematically by analyzing the audio signal and computing phase-linear filters. This enables phase-coherent crossovers – the output of multiple drivers maintains proper phase relationships across the entire frequency spectrum[3]. FIR filters in professional DSPs (like the ADSP-21571 in Feurpro units) prevent phase cancellation that degrads system impact and clarity.