Naim Ovator S-400 floorstanding speakers

Naim Ovator S-400 floorstanding speakers

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Constructed on the rigid foundation of a pressure die-cast aluminium plinth, the Naim Ovator S-400 speakers comprise visually stunning leaf-spring decoupled enclosures fitted with two custom designed rigid paper cone bass drivers. Located above the bass drivers, within nested and decoupled enclosures, is a uniquely advanced Balanced Mode Radiator. The Balanced Mode Radiator (BMR) drive unit reproduces the full bandwidth from the low midrange crossover point to well above audibility with a flat frequency response, minimal distortion and consistently wide dispersion.
The Naim Ovator S-400 speakers, with twin 165mm bass drivers and a 46mm BMR in a 40 Litre enclosure, the Naim Ovator S-400 is designed for more modest listening rooms and can be used with less ambitious Naim amplification. Low frequency response still reaches down to 36Hz however and the S-400 gives only very little away to the S-600 in terms of dynamics and maximum level. The Naim Ovator S400 floor standing speakers give nothing away in music making however.
The Naim Ovator S 400 Balanced Mode Radiator (BMR) constitutes its most visible technological advance, yet its performance is equally the result of painstaking refinement in numerous elements of design, construction and material selection. For example, there is so much more to the musical reproduction of bass than low frequency extension, so the Ovator LF drivers are designed not simply to play bass, but to do so with faultless musical accuracy. They incorporate a multitude of electro-acoustic details aimed at minimising distortion and compression, and the result is extended bass with peerless timing, dynamics and pitch accuracy. One vital element in the design of a high performance bass driver is its chassis. Great rigidity and an open structure are vital but potentially conflicting requirements, so the Ovator pressure die-cast bass driver chassis incorporates a triangulated framework, the product of finite-element analysis, that ensures both rigidity and unimpeded air passage.
The Naim Ovator S-400 crossover networks are housed within the plinth and divide the audio signal between bass drivers and BMR with fourth order acoustic slopes at 380Hz in the case of the S-600 and 700Hz in the case of the Naim Ovator S400. Each component selection is the result of intense technical analysis and significant listening, and the component arrangement is fundamentally informed by the layout and earthing techniques developed for Naim power amplifiers. A crossover module suspension system and individual component decoupling ensures any chance of microphony is minimised. Conversion to either bi-amp or tri-amp active drive is easily achieved through removal of the crossover module.

    Hardened floor spikes

    FEA modelled driver chassis

    Computer-modelled crossover

    Decoupling leaf spring

    Die-cast plinth

    Rigid multi-composite enclosure

    Computer-optimised bass driver

    BMR Isolating Enclosure

    BMR driver

    BMR Suspension


    Freqency repsonse

    36Hz - 35kHz

    Sensitivity SPL/m/2.83V


    Nominal impedance

    4 Ohms

    Recommended amp Power

    25 - 150 Watts

    Dimensions (HxWxD) in mm





Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

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