Crossovers & DSP Accessories
Passive crossovers and DSP add-ons for car audio systems, from replacement speaker crossovers to extension cards, Bluetooth modules and remote controls.
Find crossovers for Morel, Helix and Audison speaker sets, and accessories for DSPs and DSP amplifiers from Audiotec Fischer, Audison, Morel, JL Audio and Zapco, including optical and analogue input cards, Bluetooth streaming modules and control units.
Save 6% Staff Pick Helix DSP.3S 8 Channel Digital Signal Processor 64 Bit Audio DSP High Res Ready RRP£479.99£449.00 / Save 6%In stock
Save 13% Best Seller Helix DSP Mini MK2 Compact 6 Channel Digital Signal Processor 64 Bit Audio DSP RRP£399.99£349.99 / Save 13%In stock
Out of stock Best Seller Audiotec Fischer AMI Audio Measurement Interface for Brax Helix Match DSP £149.99 / Out of stockOut of stock
Out of stock Hertz S8 DSP 8 Channel Compact HI Res App Controlled Digital Sound Processor £539.99 / Out of stockOut of stock
Out of stock Helix Compose i3 Ci3 FX-WLP.2 Lowpass Cable Crossover for i3 Series £29.99 / Out of stockOut of stock
Out of stock JL Audio VXi-HUB JLid Comm & Optical Audio Network Hub for VXi Amps Amplifiers £199.00 / Out of stockOut of stock
Out of stock Morel MDSP Control Programmable Amplifier Remote Control £199.00 / Out of stockOut of stock
Out of stock Morel MDSP-TL Tunelink Amplifier Link Cable for MDSP Amps £79.00 / Out of stockOut of stock
Out of stock Morel MDSP-BT Bluetooth Expansion Module for MDSP Amps £99.00 / Out of stockOut of stock
Out of stock Morel MXT380C Crossover for Elate Carbon 3-Way Speakers £629.00 / Out of stockOut of stock
Out of stock Morel MXT280C Crossover for Elate Carbon 2-Way Speakers £519.00 / Out of stockOut of stock
Out of stock Morel MXR250.4I Crossover for Integra 2-Way Speakers £329.00 / Out of stockOut of stock
Out of stock Morel MXR200.4 Crossover for Virtus Nano 2-Way Speakers £279.00 / Out of stockOut of stock
Out of stock Morel MXR300.4 Crossover for Hybrid & Virtus Nano 3-Way £399.00 / Out of stockOut of stock
Crossovers or DSP?
Passive crossovers are the simple, matched option for a component speaker set. A DSP gives full control of crossover points, time alignment and EQ, and accessories here add inputs or remote control to the DSP you already have.
Crossovers & DSP Accessories FAQs
Q: What does a passive crossover do?
A: A passive crossover splits the signal between the tweeter, midrange and woofer so each speaker plays only the frequencies it handles best.
Q: Can I use a different crossover with my speakers?
A: Use the crossover designed for your speaker set where possible. Each product title lists the series it matches.
Q: What are DSP extension cards?
A: They add inputs or features to a compatible DSP or DSP amplifier, such as optical, analogue or Bluetooth streaming input.
Q: Can CEN install and tune a DSP?
A: Yes. We install and tune DSP systems at our Beeston, Nottingham workshop.
Not Sure Where to Start?
Straightforward advice and the latest news from our Nottingham team.
All Guides and News →
Amplifiers
What Is a DSP? In-Car Sound Processing Explained
Read the guide →
Amplifiers
New at CEN: Helix Next DSP Ultra XT — The New Flagship of In-Car Processing
Read more →
Amplifiers
Car Amplifier Buying Guide: Channels, Power and Matching Explained
Read the guide →
Amplifiers
The FiiO K15 DAC and Headphone Amplifier
Read more →
Car Audio
Christmas Gift Guide 2026: Car Audio, Dash Cams and Outdoor Tech
Read the guide →
Car Audio
Upgrading Car Audio Without Replacing the Factory Stereo
Read the guide →