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Analog active subwoofer crossover with selectable frequencies, XLR/RCA I/O and independent sub level control.
What is it?
The AAL – DIY Analog Subwoofer Crossover – ECO is a fully analog active low-pass filter designed for subwoofer integration in Hi-Fi, studio and DIY audio systems.
Designed for users who want a simple, musical and effective analog solution without DSP complexity, software setup or digital processing.
This ECO version is housed in a robust PETG enclosure and powered using carefully selected external power and symmetrical supply modules, while preserving AAL’s audio-focused design philosophy.
Why did you make it?
Many subwoofer systems are either:
- overly complex DSP solutions
- noisy low-cost filters
- difficult to integrate into existing audio systems
Many users simply want clean and controlled bass without DSP menus or software setup.
This crossover was designed to provide a practical, transparent and musical solution for seamless subwoofer integration with precise low-frequency control.
Features
- Fully analog active low-pass crossover
- Selectable frequencies: 40 / 50 / 63 / 80 / 100 / 120 Hz
- Cool / Huge bass character adjustment
- “Sweet Spot” sound optimization control
- Independent subwoofer output level adjustment
- XLR and RCA connectivity
- External 24V DC / 2A power supply included
- Input: 100–240V AC, 50/60 Hz
- Output: 24V DC / 2A
- Region compatibility: EU plug (Type C)
- Compatible with worldwide mains voltage. A plug adapter may be required outside EU regions.
XLR/RCA Connectivity
- Left / Right inputs
- Left / Right outputs
- Dedicated subwoofer output
Typical Applications
- Hi-Fi subwoofer integration
- Studio monitoring with subwoofer
- DIY speaker systems
- Mobile studio setups
- Analog audio systems requiring simple bass management
What makes it special?
- No software setup, DSP headaches or menu diving
- Audio-conscious analog design
- Optimized internal wiring and grounding strategy
- Carefully selected components
- Robust 4P6T rotary selector
- Clean, dynamic and controlled bass reproduction
ECO vs Premium version
The ECO version prioritizes affordability while maintaining sound quality.
For fixed installations or professional environments, a premium 19" rack version is available with a custom-designed symmetrical linear power supply and near-silent idle noise performance.
Why this price?
Built using carefully selected components and hand assembly practices focused on signal integrity, reliability and long-term durability.
Who did it?
Designed, hand-assembled and individually tested in France by AAL — Analog Audio Lab.
Practical electronics designed to solve real-world problems.
Links to code and documentation
No additional links provided for this product.
Shipping policy
No information available.
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AAL – Analog Subwoofer Crossover – ECO (XLR / RCA)
Sold by Analog Audio Lab's store
$288.10
No tax for United States [change]
Stock available: 1
The seller
Electronics enthusiast since childhood, musician, and longtime engineer, I design and build electronic devices combining analog audio, embedded systems, and practical everyday innovation.
My background includes:
IT systems & network engineering
analog audio electronics
microcontroller and robotics projects
studio recording and live sound for more than 10 years
Today, through AAL (Analog Audio Lab), I develop DIY and boutique electronic solutions ranging from audio devices and signal conditioning tools to smart everyday electronics designed for reliability, simplicity, and real-world usefulness.
My background includes:
IT systems & network engineering
analog audio electronics
microcontroller and robotics projects
studio recording and live sound for more than 10 years
Today, through AAL (Analog Audio Lab), I develop DIY and boutique electronic solutions ranging from audio devices and signal conditioning tools to smart everyday electronics designed for reliability, simplicity, and real-world usefulness.