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© Knoll Systems 2005
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 SD652

Dual Round 6-1/2" Speaker

  • Stereo dual point speaker, gives stereo sound from one speaker.
  • Accurate, excellent sonic quality
  • Spider wave guide gives a more balanced mid-range.
  • 18 dB (3 pole) crossovers
  • Super flat grill and flange design
  • High power handling.
  • Silk dome pivoting tweeters with neodymium magnets.
  • Three position tweeter attenuator.
  • Kevlar cone woofers.
  • Easy to install with gold binding posts and integral mount system.
  • Paintable grills and flanges.

Incredible sound, invisible look.

Knoll engineers have designed a line speakers that deliver uncompromised sonic quality without the visual compromise of boxed or in-wall speakers. High efficiency and high power handling from exotic materials make for great sound quality. Silk, kevlar and neodymium (a rare earth element) are have been studiously blended to give top of the performance, expected from this class of speaker.

Silk dome pivoting tweeters with highly magnetic neodymium magnets feature switchable three level attenuation to give pristine highs at the correct level. The pivoting tweeters can be directed at the critical listening areas and if the room is "hot" the tweeters can be attenuated until the correct level is selected. The all new spider wave guide is so rigid it reduces reflections and resonance's and give a more balanced mid-range. The bass is tight with definition as the long excursion woofer is made from kevlar, the same stiff material used on the sails of racing yachts and bullet-proof vests. With finely tuned 3-pole crossovers these speakers have the desirable sonic characteristic of transparent vocals and they are very musical.

The SD652 speaker can be placed in virtually any location, ceiling or wall. Not only will you appreciate the top of the line performance, your installer will love the ease of installation with gold binding posts and a fast pivoting mount system. The SE652 features super flat grills and frames that seem to disappear in the wall or ceiling. The SD652 is a dual voice coil 6-1/2" Kevlar woofer with two 1" tweeters so the left and right channels can be heard on a single speaker (ideal for hallways, ensuites and wherever stereo sound is impractical). Power requirements are 5 to 125 watts.

The SD652, SE650 and SE800 speaker models join the already renowned line of Knoll System's audio components. All of our in-ceiling home theater products provide reliable, unprecedented performance for your home listening enjoyment.

For best results with any speakers, use Knoll Transformer-Free™ stereo volume controls.

Knoll has been producing world class speakers for over twenty years.


Rear view of SD652, showing gold binding posts, 18 db/oct crossover and 3 position switchable tweeter output.


Wire Requirements:

When pre-wiring for Knoll SD652 speakers, the ideal wire to use is low oxygen copper, minimum 18 gauge. Runs longer than 33' (10 m) should be minimum 16 gauge wire. When "pre-wiring" leave an extra 3' (1 m) at each end to allow easy component installation.

Pre-construction bracket:

VE650TR (shipped in pairs, six pairs per master carton)

Specifications:

Stereo sound from a single speaker!

Speaker Type: Dual channel, Infinite baffle, two-way, super flat grill and frame
Tweetes: Two 1" (25mm) silk dome, pivoting with neodymium magnet
Woofer: 6-1/2" (165 mm) kevlar cone with long excursion rubber surround 
Frequency Response: 38 Hz to 20kHz +/- 3 dB
Impedance (minimum): 8 ohms (7 ohms)
Power Handling: 5 to 125 watts
Efficiency: 90 dB @ 1w/1m
Grills: Painted metal
Mount Depth Required: 3-15/16" (100 mm)
Speaker Diameter: 9-9/16" (243 mm)
Cut Out Dimensions: 8-1/4" (210 mm)
Trim Ring & Grill Color: Paintable White
Weight (each) 3.9 lbs (1.8 kg)


© Knoll Systems 2005