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For sale: a pair of KEF SP3652 C3 speakers, designed with bi-wire terminals for improved signal separation and flexible amplifier connections.
Cosmetic condition:
The speakers are in minor damaged condition.
Light scratches and cosmetic wear from normal use
Grills are not included
Overall still a nice and functional pair.
Functional status
✔ Fully working✔ Drivers in good condition
''Important note when tested: When we find there's either a small thing wrong, or not 100% working we offer our listings for parts or repair to avoid unwanted issues after purchase''
Specs:
Type: 2-way bass reflex, compact speaker
Chassis:
Woofer: 1x 130 mm
Tweeter: 1x 19 mm (aluminum dome) Power handling (nominal/music):
recommended amplifier power: 15 - 125 W
efficiency: 88 dB (2,83V/1m)
frequency response: 54 - 40,000 Hz
crossover ranges:
Impedance: 8 ohms
Dimensions (LxWxH): 25x40x30cmWeight: 10 Kg
We ship worldwide.Will ship to the USA as well. We ship DDP bases (Delivery Dutie Paid)-Shipping in the EU up to 30 KG (max)-Shipping outside of the EU up to 20 KG (max)
Please note: ‘’Whenever an item exceeds the weight noted above. Please ask for a shipping quote before making a purchase. The shipping costs are estimated in our shop because we do not know the shipping address.
Picking up the item is also possible. It can be picked up in Alkmaar
Delivery by us is also possible in some cases. Please reach out to us for more information about deliveries
State of listing: If a listing is listed ''for parts or not working'' returns are not accepted.
When we offer our products with the notice ''Serviced'' or ''Fully serviced'' that means the device is either lightly ''serviced'' with a new belt, and cleaned the pots, Or ''Fully serviced'' recapped, Quiescent current adjusted etc as expected from a full service
At US$336 for parts, this KEF SP3652 (C3) listing is far above the typical used market for working pairs, which routinely sells between US$75 and US$175. While US$75–US$100 represents the common floor for normal-used pairs and US$175 is a solid upper bound for clean examples, paying over double that for non-functional speakers is an ambitious ask unless the parts are rare or the cabinets are pristine.
The KEF C3/SP3652 is a respected 2-way bookshelf speaker known for tight bass and clear mids thanks to its 8Ω, 125W design, making it a worthwhile candidate for a DIY restorer who values KEF’s classic voicing. If the cabinets are undamaged and the tweeters or woofers are identifiable KEF originals, the project could yield a high-performing pair for well under US$250 total, but at US$336 parts-only, the upside hinges entirely on your ability to source cheap replacements and confirm cabinet integrity.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
KEF traces its roots to 1961, when British engineer Raymond Cooke founded the company in a modest Nissen hut on the grounds of the Kent Engineering and Foundry in Maidstone, England. A former BBC engineer and Wharfedale veteran, Cooke was driven by a passion for music and a commitment to technological innovation, aiming to reproduce sound as faithfully as the original performance. From its inception, KEF pioneered materials like foil-stiffened polystyrene diaphragms and Melinex tweeters in its debut K1 loudspeaker, setting a benchmark for engineering precision that propelled the brand to early acclaim.
KEF has long specialized in loudspeakers, establishing itself as a leader with iconic innovations such as the Uni-Q coaxial driver and computer-aided design techniques that revolutionized driver and enclosure development. While drive units supplied to other manufacturers fueled its growth, the brand's core output remains high-fidelity speakers across categories like floorstanders, bookshelves, and home theater systems, including early THX-approved setups. Active wireless models and reference-grade series extend its portfolio, though it eschews amplifiers, turntables, DACs, headphones, or cables.
Renowned for its science-driven heritage, KEF occupies a premium position in the hi-fi market, blending accessible high-end performance with cutting-edge technology. Collectors prize vintage BBC monitors and Bextrene-driver classics, while modern buyers seek its precise, natural soundstaging. Decades of awards affirm KEF's status as a respected innovator, appealing to discerning audiophiles who value engineering over hype.
See all Kef listings on RADAR.
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