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Quad S-1

Bookshelf speakers (Mahogany)

Item # 306S1MGY

The S-1 is the smallest and lowest-priced speaker we've seen with a ribbon tweeter of this quality.

The S-1 is the smallest and lowest-priced speaker we've seen with a ribbon tweeter of this quality.

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About the Quad S-1

Compact speakers designed for listeners

Audiophiles love the open, transparent sound of ribbon tweeters, but until now, the price of admission has been pretty steep. Quad's S Series speakers bring this advanced technology within reach of more music lovers, starting with the baby of the family, the S-1.
Quad S-1

Shown in black.

Compact speakers designed for listeners

Audiophiles love the open, transparent sound of ribbon tweeters, but until now, the price of admission has been pretty steep. Quad's S Series speakers bring this advanced technology within reach of more music lovers, starting with the baby of the family, the S-1.

Whatever kind of music you like, these speakers let it all come through — they hold nothing back. And if you love vocals, these little gems definitely belong on your short list.

Quad's ribbon tweeter lets the music flow

A ribbon tweeter produces sound in a way that's simpler and more direct than the more common dome tweeter. In a dome tweeter, the signal from your amplifier drives a voice coil, which is connected to the dome-shaped diaphragm, but only around the circumference, so a bit of musical information may be lost.

In a ribbon tweeter, the metal ribbon is suspended in a strong magnetic field. Basically, the diaphragm is the voice coil, so it's always under the control of the music signal from the amplifier. Because the ribbon is directly driven by the amplifier, its resolution of musical detail is extremely high.

Ribbons have always been prized for their pure, clear sound, but they haven't always been very rugged. Quad's ribbon tweeter is made from a lightweight metal alloy that is strengthened by a thin layer of polycarbonate. This sandwich construction makes the tweeter robust enough to handle high-powered amplifiers.

The S-1's tweeter sounds silky smooth, detailed, and "fast."

A nimble 4" woofer

To handle the mid and low frequencies, the S-1 relies on a 4" woven-Kevlar® mid/bass driver. Its small size keeps it nimble in the midrange, and helps it blend seamlessly with the extremely quick ribbon tweeter. The S-1's small woofer and cabinet means you can hear bass notes, but you won't really feel them.

Setup tips

The ribbon tweeter's shape radiates sound in a wide horizontal arc, while its vertical dispersion is purposely limited to reduce interaction with the floor or ceiling. For that reason, it's especially important to place the speakers so that the tweeters are at ear level. Using 24" stands should do the trick in most systems.

To hear the S-1s at their best, you should drive them with at least 50 watts per channel of high-quality amplification. The S-1s go surprisingly low for their size, but for truly full-range sound, I suggest pairing them with a high-quality powered subwoofer.

Quad's history of innovation

Founded in 1936 to build public address systems, Quad introduced two of the most important speaker innovations of the past century: the first ribbon-based home speaker, in 1949, and the first full-range electrostatic speaker, in 1957. Today, Quad speakers and electronics are still designed and engineered in England, and are manufactured in China.

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Product highlights:

  • 1/2" x 1-3/4" True Ribbon tweeter for open, transparent sound
  • 4" woven Kevlar® cone mid/bass driver
  • bass-reflex (ported) cabinet with rear-firing port
  • frequency response: 58-20,000 Hz (±3dB)
  • sensitivity: 84 dB
  • impedance: 8 ohm compatible
  • recommended amplifier power: 25-100 watts
  • dual 5-way binding post speaker terminals with bi-amp/bi-wire capability
  • removable magnetic grille
  • 6-3/16"W x 11-1/4"H x 10-5/8"D
  • weight: 11.5 lbs. (each)
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # QUADS1MAH

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More details on the Quad S-1

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Features & specs

Enclosure Bass Reflex
Finish MDF/Wood veneer
Color Mahogany
Video Shielded No
Tweeter Type Ribbon
Tweeter Size (inches) 0.5" x 1.75"
Midrange Size (inches) N/A
Woofer Size (inches) 4
Woofer Composition Woven Kevlar
Woofer Surround Rubber
Power Range 25-100
Sensitivity 84 dB
Impedance (Ohms) 8
Frequency Response 58-20k Hz
Connector Type Post
Bi-amp Inputs Yes
Height (inches) 11-1/4
Width (inches) 6-1/4
Depth (inches) 10-5/8
Weight (pounds) 11.5
Mounting Bracket Included No
Recommended Stand Height (inches) 24-28
Parts Warranty 5 years
Labor Warranty 5 years

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Quad S-2
Bookshelf speakers
Mahogany
Temporarily out of stock
$999.99 pair
Add to cart

The S-2 has the same ribbon tweeter, and a bigger woofer and cabinet for more sonic presence.

The Quad S-2 offers these features:
  • 5" woven-Kevlar® woofer
  • larger cabinet: 7-1/8"W x 13"H x 11-7/16"D
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