S-1
Quad Discontinued

S-1

The S-1 is a compact two-way bookshelf speaker with a vented cabinet. It pairs a 4-inch woven Kevlar bass/mid driver with a 45 x 12 mm true ribbon tweeter, and suits listeners wanting a small hi-fi speaker for a stereo system.

  • 2-way vented bookshelf speaker, 6.7 L cabinet
  • 45 x 12 mm true ribbon tweeter
  • 4" (100 mm) woven Kevlar bass/mid driver
  • Response 58 Hz to 20 kHz (±3 dB)
  • 84 dB sensitivity, 8 Ω nominal impedance
  • Four finishes: Black Oak, Sapele Mahogany, Piano Black, Piano White
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Description

The S-1 is the smallest model in the S Series loudspeaker range. It is a two-way design in a 6.7-litre vented cabinet. A 4-inch (100 mm) woven Kevlar cone handles bass and midrange, and a 45 x 12 mm true ribbon unit covers the treble. The two drivers are joined by a crossover network set at 3.2 kHz.

Stated frequency response is 58 Hz to 20 kHz (±3 dB), with bass extension to 55 Hz at -6 dB. Sensitivity is 84 dB (2.83 V at 1 m). Nominal impedance is 8 ohms with a minimum of 4.2 ohms, and the recommended amplifier power is 25 to 150 W.

The cabinet measures 285 x 156 x (240 + 30) mm and weighs 5.2 kg. It is offered in four finishes: Black Oak, Sapele Mahogany, Piano Black and Piano White. A brochure and a manual are available as downloads. The speaker connects to an amplifier through its loudspeaker terminals; the listed specifications do not describe the terminal type.

Video

Specifications

Brand
Quad
Model
S-1
Category
Hi-fi and home audio › Speakers

General

Model
S-1
Description
2-way bookshelf speaker
Enclosure type
Vented box loudspeaker
Transducer complement
2-way

Drivers

Bass / Mid driver
4" (100 mm) woven Kevlar® cone
Treble driver
45 x 12 mm true ribbon
Crossover frequency
3.2 kHz

Audio

Sensitivity (2.83 V @ 1 m)
84 dB
Frequency response (±3 dB)
58 Hz ~ 20 kHz
Bass extension (-6 dB)
55 Hz

Electrical

Nominal impedance
8 Ω compatible
Minimum impedance
4.2 Ω
Recommended amplifier power
25-150 W

Physical

Cabinet volume
6.7 L
Dimensions (H x W x D)
285 x 156 x (240 + 30) mm
Weight
5.2 kg
Finishes
Black Oak, Sapele Mahogany, Piano Black, Piano White

Documents

PDF User manualPDF · by the maker

Data: quad-hifi.co.uk; photos: Quad product page · updated 2026-10-14 · Found a mistake? Write to us