Arc Audio
RS4.0 4" Reference Midrange Speakers
Midrange Speaker
Why choose this product?
The ARC Audio RS4.0 is a compact four-inch Reference Series midrange designed for active systems where clarity, depth and installation flexibility matter. Its lower resonance and increased excursion capability support deeper midband crossover points, helping move crossover interaction away from critical staging regions.
A hard-pressed composite papyrus cone combines low mass with controlled damping, while the cast-aluminium basket and low-damping rubber surround maintain mechanical stability. The high-flux neodymium motor uses an integrated shorting ring to reduce distortion and inductive rise, and every pair is hand-matched for compliance and acoustic symmetry.
Features
- Matched pair of 4-inch Reference Series midrange speakers
- Hard-pressed composite papyrus cone
- Low-damping rubber surround
- Cast-aluminium basket
- High-flux neodymium slug magnet
- Integrated shorting ring reduces inductive rise and distortion
- High-temperature CCAW voice coil on a non-conductive former
- Compact 1.94-inch mounting depth
- Suitable for 2-way, 3-way or rear-fill active systems
- Hand-matched for compliance and acoustic symmetry
Official downloads
Why choose this product?
The ARC Audio RS4.0 is a compact four-inch Reference Series midrange designed for active systems where clarity, depth and installation flexibility matter. Its lower resonance and increased excursion capability support deeper midband crossover points, helping move crossover interaction away from critical staging regions.
A hard-pressed composite papyrus cone combines low mass with controlled damping, while the cast-aluminium basket and low-damping rubber surround maintain mechanical stability. The high-flux neodymium motor uses an integrated shorting ring to reduce distortion and inductive rise, and every pair is hand-matched for compliance and acoustic symmetry.
Features
- Matched pair of 4-inch Reference Series midrange speakers
- Hard-pressed composite papyrus cone
- Low-damping rubber surround
- Cast-aluminium basket
- High-flux neodymium slug magnet
- Integrated shorting ring reduces inductive rise and distortion
- High-temperature CCAW voice coil on a non-conductive former
- Compact 1.94-inch mounting depth
- Suitable for 2-way, 3-way or rear-fill active systems
- Hand-matched for compliance and acoustic symmetry
Official downloads
Construction & features
- Matched pair of 4-inch Reference Series midrange speakers
- Hard-pressed composite papyrus cone
- Low-damping rubber surround
- Cast-aluminium basket
- High-flux neodymium slug magnet
- Integrated shorting ring reduces inductive rise and distortion
- High-temperature CCAW voice coil on a non-conductive former
- Compact 1.94-inch mounting depth
- Suitable for 2-way, 3-way or rear-fill active systems
- Hand-matched for compliance and acoustic symmetry
Technical overview
Power & electrical
- RMS power
- 75 W
- Maximum power
- 150 W
- Nominal impedance
- 4 ohm
- Sensitivity
- 91 dB
Acoustic & construction
- Frequency response
- 90 Hz-11.5 kHz
- Driver size
- 4.0 in
- Speaker type
- Matched raw midrange pair
Installation
- Mounting depth
- 1.94 in
Compatibility and support
Confirm the available mounting depth, cut-out diameter, grille clearance and amplifier power before ordering. We reply by email or WhatsApp so you have the recommendation in writing.
Need installation help?
Ask before ordering if the speaker size, depth or wiring is unclear.
Send the product you are replacing, the available mounting depth and any adapter or grille details. We’ll reply in writing.