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OE-400 4″ 2-Ohm Mid-Range OEM Speakers | Bose Fit
£72.99
- Solves a tricky factory-replacement problem – the OE-400 is purpose-built to replace the worn mid-range speakers in many Bose-equipped vehicles without removing whole enclosures or forcing in the wrong size.
- Correct 2-ohm impedance – matched to the lower-impedance systems used in many modern and Bose setups, where a standard 4-ohm speaker won’t perform properly.
- True drop-in fit – OEM mounting and terminal placement mean it goes straight in where the original sat.
- Keeps the factory character, with more life – a treated pressed paper cone and nylon accordion surround restore the mids and detail a tired speaker loses.
- Fitted properly by Safe and Sound – with 30+ years’ experience, our installers match impedance and wiring correctly for a clean result.
- Sold as a pair – a balanced left-and-right replacement in one purchase.
Fix the worn factory mid-range in your Bose-equipped vehicle with the OE-400 4″ 2-ohm mid-range speakers, a purpose-built drop-in replacement supplied and expertly fitted by Safe and Sound, the vehicle audio and security specialists with over 30 years’ experience.
Built to solve a common problem
The mid-range speakers in many Bose-equipped vehicles are notoriously awkward to replace. They are an unusual size, sit in sealed enclosures, and run at a lower impedance than typical aftermarket speakers, so the usual options either do not fit or do not match. The OE-400 was designed specifically to solve that. It is a true drop-in OEM replacement, with matching mounting and terminal placement, so you can revive a tired factory system without major work.
The right 2-ohm match
The key to the OE-400 is its 2-ohm voice coil. Many late-model and Bose systems are engineered around a lower impedance, and fitting a standard 4-ohm speaker in their place changes how the system performs. By matching the factory 2-ohm impedance, the OE-400 works with your existing setup as intended, bringing back the highs and lows a worn speaker loses.
Tuned to keep the factory feel
To restore the sound without changing the character of your system, the OE-400 uses a treated pressed paper cone with a nylon accordion surround, paired with a stronger EFF (Efficient Flux Field) motor structure. The result is cleaner, fuller mids with the durability to last. A shallow 1.86″ mounting depth helps it sit correctly in tight factory locations, and the speakers are supplied as a pair.
- Bose-equipped vehicle replacement – purpose-built for a known fitment headache.
- 2-ohm impedance – matched to lower-impedance factory systems.
- OEM drop-in design – matching mounting and terminal placement.
- Shallow 1.86″ mount – fits tight factory openings.
OE-400 key specifications
| Specification | Detail |
|---|---|
| Type | 4″ mid-range OEM replacement |
| Designed for | Many Bose-equipped vehicles |
| Supplied as | Pair |
| Nominal impedance | 2-ohm |
| Power handling (RMS / peak) | 40W / 120W per speaker |
| Sensitivity (1W / 1M) | 87 dB |
| Frequency response | 80 Hz to 21 kHz |
| Cone | Treated pressed paper |
| Surround | Nylon accordion |
| Motor structure | 12 oz, EFF (Efficient Flux Field) |
| Mounting depth | 1.86″ |
| Terminals | OEM-matched placement |
Why have Safe and Sound fit it?
Impedance matching is exactly the kind of detail that catches people out on factory and Bose systems, so it pays to have it done right. Our team makes sure your OE-400 speakers are correctly matched, wired with the right polarity and seated securely, so you get clean, balanced sound from both sides. With three decades of in-car audio installation behind us, we get it right the first time, and back our work with honest, professional advice.
Tired of dead factory speakers?
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OE-400 4″ 2-Ohm Mid-Rang... £72.99