KEF

KEF Ci200QSb-THX 8" In-Wall/Ceiling Subwoofer THX Ultra/Select (Pair)

Product code: 212614

£617.00 inc VAT
£514.17 ex VAT

SKU: SP3894AA

4 in stock (more available subject to additional lead time)

4 available online

More available from supplier in 1–3 weeks

About this Product

The KEF Ci200QSb-THX is an 8″ (200mm) square in-wall / in-ceiling subwoofer, sold in pairs. It can run in passive mode with its internal 100Hz crossover to supplement KEF Ci in-wall or in-ceiling speakers, or in active mode driven by the KEF KASA500 amplifier, where KEF quotes THX Certified Select (2 pairs) or THX Certified Ultra (4 pairs) performance.

Driver

8″

200mm

Response

30Hz

active, ±6dB

Max SPL

104dB

Sold as

Pair

Active mode

THX-certified performance requires KEF KASA500 amplification (sold separately). KEF quotes THX Certified Select with 2 pairs and THX Certified Ultra with 4 pairs of Ci200QSb-THX – check the KEF set-up guide for the KASA500 count.

Features

✓
THX Certified Ultra / Select (in active mode with KASA500)

✓
200mm (8″) high-output woofer with extended bass response

✓
Passive mode with internal crossover, or active mode with the KEF KASA500 system amplifier

✓
Paintable Ultra-Thin Bezel (UTB) and magnetic grille

✓
Installs on virtually any surface via dogleg clamps

✓
Optional RIF200S rough-in frame

✓
Sold in pairs

✓
IP64 certified

Specifications

Model	Ci200QSb-THX
Type	In-wall / in-ceiling subwoofer
Drive unit	LF: 200mm (8″)
Passive: nominal impedance	6Ω
Passive: sensitivity (2.83V/1m)	85dB
Passive: frequency response (±6dB, open-backed)	40Hz – 100Hz
Passive: crossover	100Hz
Passive: recommended amplifier power	10 – 150W
Passive: recommended low-pass filter	80Hz – 120Hz
Active (KASA500): frequency response (±6dB, open-backed)	30Hz – 140Hz
Active: recommended low-pass filter	50Hz – 120Hz
Max SPL	104dB
External dimensions (H x W x D)	273 x 273 x 106mm
Cut-out (H x W)	238 x 238mm
Mounting depth from surface	101.6mm
Net weight	3.3kg
Passive: frequency range (-10dB)	29Hz – 140Hz
Active: frequency range (-10dB)	25Hz – KASA500 setting
Rear volume (per speaker)	32L ideal / 20L minimum
Certification	THX Certified Ultra / Select; IP64
Optional rough-in frame	RIF200S

Full features

THX Certified Ultra2 / Select2
200mm (8in.) woofer unit with extended bass response
Paintable Ultra-Thin Bezel (UTB) and magnetic grille to blend unobtrusively with décor
Fast, versatile installation on virtually any surface via dogleg
Can be used in passive mode with internal crossover or active mode with KEF’s KASA500 System Amplifier for THX-certified performance
Sold in Pairs

Full specifications

Passive Mode (Crossover "ON")

Nominal impedance: 6Ω
Max SPL (dB): 104dB
Sensitivity (2.83V/1m): 85dB
Frequency response (±6dB) open-backed: 40Hz-100Hz
Crossover frequency: 100Hz
Drive units: LF: 200 mm (8 in.)
Recommended amplifier power: 10-150W
Recommended low-pass filter (Hz): 80Hz - 120Hz
Product external dimensions (H x W x D): 273 x 273 x 106 mm (10.75 x 10.75 x 4.17 in.))
Cut-out dimensions (H x W): 238 x 238 mm (9.37 x 9.37 in.)
Net Weight: 3.3 kg (7.28 lbs)
Mounting depth from surface: 101.6 mm (4 in.)
Optional rough in frame: RIF200S

Active Mode (KASA500)

Frequency response (±6dB) open-backed: 30Hz-140Hz
Max SPL (dB): 104dB
Drive units: LF: 200 mm (8 in.)
Required amplifier: KEF KASA500
Recommended high-pass filter (Hz): KASA
Recommended low-pass filter (Hz): 50Hz - 120Hz
Product external dimensions (H x W x D): 273 x 273 x 106 mm (10.75 x 10.75 x 4.17 in.))
Cut-out dimensions (H x W): 238 x 238 mm (9.37 x 9.37 in.)
Net Weight: 3.3 kg (7.28 lbs)
Mounting depth from surface: 101.6 mm (4 in.)
Optional rough in frame: RIF200S

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Frequently Asked Questions

Who are Stage Supply?

We’re a working touring and events production company founded in 2019 by sound engineers with many years of experience.

We’re very selective about the products we sell. Everything we supply we use ourselves on our tours, events and productions. This means we can offer a level of buying advice and aftersales support that can’t be beaten.

We’re official dealers of brands such as Allen & Heath, Audio Technica and sE Electronics. We also stock other leading brands including Shure, Sennheiser, Martin Audio and Chauvet Professional.

What payment methods do you accept?

We accept Visa, Mastercard, American Express, Apple Pay, Google Pay and Paypal. We also offer finance through Paypal Credit and Klarna.

Business Customers can choose to receive a Proforma Invoice on checkout to pay by bank transfer.

Do you offer technical support?

Yes. We run an AV production business and have AV Engineers on hand to provide advice and technical support during our operating hours.

The quickest way to contact us for advice and support is through WhatsApp or Email.

Can I open a trade account?

Many of our customers are trade/industry buyers and we have already factored this into our pricing. Trade discounts may be available for bulk quantities on some products.

We also offer quantity discounts on some products on our website.

Do you ship outside the UK?

You can order on our website for delivery to the UK (Including Northern Ireland), Isle of Man, Jersey, Guernsey and the Republic of Ireland.

We can ship many items to the EU and other countries worldwide. Our dealer agreements may prevent us sending some items to certain countries.

Please contact us for a quotation if you need something shipped to a country not offered at checkout.

Can I return an item?

Please see our Returns page for information on our returns policy and to start a return online.

Generally if you change your mind you can return your item for a full refund within 30 days of delivery (14 days for business customers) - as long as the product is unopened and unused.

If an item is faulty or damaged we will arrange collection free of charge and repair/replace it as quickly as possible.

How quickly will my order arrive?

Estimated delivery times are shown on the product page. For items in stock we aim to get your order to you within 1 - 2 working days.

Some items are ordered directly from the manufacturer. These may have longer lead times which will be estimated on the product page. Please contact us for a more accurate lead time.

Do you have a shop/can I collect?

Yes. We have a trade counter near Wembley Stadium, London. Many of our most popular items are stocked here for immediate collection.

Stock availability is shown on every product page and is updated in real time. Items not stocked at our Wembley branch can usually be collected next day.

Do you offer an Installation service?

We're currently not able to offer an installation service due to the rapid growth of Stage Supply.

We hope to be able to offer this service again in the future.

What courier do you use?

We use Royal Mail for smaller items, FedEx and Parcelforce for larger items and The Pallet Network for Pallet delivery items.

Tracking for your order is provided on dispatch.

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KEF Ci200QSb-THX 8" In-Wall/Ceiling Subwoofer THX Ultra/Select (Pair)