3
SONANCE SM55 & SM55SST SURFACE-MOUNT SPEAKER
2. Unscrew the male banana connec-
tors from the bottom of the speak-
er and replace them with the sup-
plied Speaker Terminal Screws
(see
Figure 8A
).
3. Run speaker wires through the
ceiling, from the speaker mount-
ing location to the amplifier.
• Consult local building codes
before running speaker wires
through ceilings.
4. Strip ½” – ¾” of insulation from
each speaker lead. Twist the wire
strands to ensure that there are no
stray strands. (Stray strands that
touch each other can cause a
short-circuit that can damage the amplifier.)
5. Wrap the bare wire ends around the Speaker Terminal Screws
and tighten the screws to secure the wires. Be sure to connect
amplifier “+” to speaker “+” and amplifier “–” to speaker “–”.
(See
Figure 8B
.)
IMPORTANT: Be sure that no stray “+” and “–”
strands touch each other. (Stray strands that touch
each other can cause a short-circuit that can damage
the amplifier.)
6. Feed any excess speaker wire back through the ceiling and
place the speaker in the desired mounting location.
7. Mark the locations of the four mounting holes on the ceiling.
8. Drill holes at the marked locations and install drywall anchors
into the holes.
9. Place the speaker at the mounting location again and drive
four 1½”-long drywall screws through the four mounting holes
on the speaker and into the drywall anchors (see
Figure 9
).
IMPORTANT: Always use low-torque settings;
NEVER over-tighten.
10. Replace the grilles on the speakers.
Painting The Grilles
Please refer to the included
Painting Instructions
sheet.
Speaker Adjustments
Rotating the Speaker
When installed using the Mounting Plate, the SM55
and SM55SST can be rotated around their center axes after
installation to align them with architectural or design elements
in the room. (See
Figure 10
.)
N
OTE: EXCESSIVELY ROTATING THE SPEAKER CAN TWIST THE
SPEAKER WIRES IN THE J-BOX BEHIND THE MOUNTING PLATE,
CAUSING THEM TO DISCONNECT
, BREAK OR SHORT-CIRCUIT.
Specifications
Tweeter: (SM55) — 1" (25mm) Silk dome,
Ferrofluid- cooled
(SM55SST) — Two 1: (25mm) Silk
domes, Ferrofluid-cooled
Woofer: (SM55) — 5¼" (133mm) Carbon
fiber cone, with a rubber surround
(SM55SST) — 5¼" (133mm) Carbon
fiber cone, with a rubber surround,
dual voice coil
Frequency Response: 65Hz – 20kHz ±3dB
Impedance: 8 ohms nominal; 6 ohms minimum
Power Handling: 5 watts minimum;
60 watts maximum
Sensitivity: 88dB SPL (2.83V/1 meter)
Grille Material: Perforated Aluminum
Dimensions (W x H x D): 10¾" x 10¾" x 2½"
(273mm x 273mm x 63.5mm)
Shipping Weight: (SM55) — 10 lbs (4.5kg) pair
(SM55SST) — 5 lbs (2.3kg) each
FIGURE 9: MOUNTING THE SPEAKER DIRECTLY ON THE CEILING
