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Russound SDB-2.1 (factory refurbished)

2-pair speaker and source selector with volume control

Item # 543SDB21R

California customers:
Please click here for your Proposition 65 warning.

About the Russound SDB-2.1 (factory refurbished)

Save on this factory refurbished speaker and source selector

You want to crank the tunes up on the patio where the party's going strong, but not in the kitchen where the cook likes the music softer. Now you can make everybody happy and save yourself some money with a factory refurbished Russound SDB-2.1 — complete with a two-year factory warranty. It gives you flexible speaker-switching options for multi-room applications, and allows you to connect two pairs of speakers and play them all simultaneously without damaging your equipment. Impedance-matching protection circuitry ensures that your amplifier or receiver operates at a safe load. This selector even lets you connect two source amplifiers and switch between them. So the patio crowd can keep stoking the salsa music, while the kitchen patrol chills to something old-school.

Product highlights:

  • play 2 pairs of speakers simultaneously
  • 11-step volume control, 42dB maximum attenuation
  • allows switching between two source amplifiers
  • impedance-matching protection circuitry ensures that your amplifier or receiver operates at a safe load
  • handles up to 100 watts per channel
  • accepts up to 12-gauge speaker wire
  • includes room/speaker labels
  • 8-1/2"W x 3"H x 7-7/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • Please note: The manufacturer uses generic packaging for this refurbished item
  • MFR # 9999-853036

What's in the box:

  • Refurbished dual source two speaker selector
  • Installation Manual
  • Sheet of 52 room labels and 8 blanks

Customer reviews

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Russound SDB-2.1 (factory refurbished) reviews

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More details on the Russound SDB-2.1 (factory refurbished)

Stacey B.

Product Research

Features

Overview: The Russound SDB-2.1 is a dual source speaker selector that allows you to control two pairs of speakers. The front panel has separate volume controls for each speaker pair so you can adjust the volume in each room from one convenient location. At each volume control, you can turn each pair of speakers on or off, and select amplifier A or B using the two 2-position push-buttons on the front panel.

Ultra-Match Technology: The SDB-2.1 uses high quality impedance matching autoformers that distribute maximum power throughout the system while maintaining a safe operating load at the amplifier. You can use the speaker selector with 4- or 8-ohm speakers. Internal jumpers allow you to select the degree of impedance matching for your speakers and amplifier.

Note: The unit is set at the factory at 2x, which is proper for most applications. If certain applications require changing the impedance setting, you will need to remove the cover and reposition the jumper on the autoformers.

Volume Controls: The SDB-2.1 has two rotary volume controls with 11 steps of volume, plus an off position. The volume control provides a total of 42 dB attenuation.

Connections: The speaker selector features four 4-pole screw terminal blocks, two for the inputs from the amplifiers, and two for the outputs to the two speaker pairs. The terminals allow you to connect up to 12-gauge speaker wire. The terminals can be unplugged from the volume control for easier wiring.

Room Labels: The SDB-2.1 comes with a sheet of non-adhesive room labels which slide into a groove in the front panel. A total of 52 labels and 8 blanks are included.

Performance: The unit will accept up to 100 watts RMS per channel (300 watts peak).

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
I will use this to select between 2 sets of speakers that are outside. It also has the added benefit of allowing me to control the volume to each set. One set is directly over the patio, while the other set is near the pool. The pool area is very close to neighbors, therefore I may sometimes want to have those speakers be at a lower volume than the patio speakers. [ A  May 10, 2020 ]

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