Inputs and Outputs
Infinity Primus Theater Pack consists of four identical 2-way satellite speakers
with a 4" woofer and 3/4" tweeter, plus a center speaker with dual
4" woofers and a 3/4" tweeter. To complete a 6.1- or 7.1-channel
surround speaker system, you can add one or two additional matching satellite
speakers (item 108P140).
Metal Matrix Diaphragm (M.M.D.):
All of the speakers in the Primus Series feature Infinity's proprietary Metal
Matrix Diaphragm (M.M.D.) drivers. Derived from the C.M.M.D. material used in
Infinity's flagship Prelude drivers, M.M.D. features a stiff aluminum core,
anodized on both sides for increased strength and rigidity. M.M.D. transducers
deliver crystal-clear, distortion-free sound from dynamic digital sources, even
at high listening levels.
The 4" M.M.D. cone woofer conducts sound faster than paper, polypropylene
and Kevlar found in many similarly-priced speakers, pushing unwanted resonances beyond the operating
range of the transducer. For a smoother response and improved durability, the
woofer uses a rubber surround.
Tweeters: The speaker utilizes
a 3/4" M.M.D. dome tweeter and waveguide to deliver a wider, more even,
Enclosures: The satellite speakers are housed in bass reflex enclosures with front-firing ports. The center channel speaker is an acoustic suspension enclosure.
Posts: The gold-plated 5-way binding posts will
accept pin connectors, spade connectors, banana plugs, dual banana plugs and
bare wire. Note: Plastic inserts must first be removed from the speaker
terminals before connecting banana plugs or dual banana plugs.
The Primus satellite speakers are designed to mount directly to a wall via the
two keyholes on the back. Two rubber "bumpers" at the bottom of the
back panel provide a non-scratch surface for walls as well as absorb vibrations
from the speaker. In addition, there is a 1/4"-20 threaded insert (covered
by a rubber plug) located on the back panel for use with third-party speaker
brackets/stands. Note: The satellite speakers weigh 7 pounds each,
therefore proper mounting of the speaker using weight-appropriate brackets and
hardware mounted to wall studs is required.
Metal Matrix Diaphragm
(M.M.D.): Derived from the C.M.M.D. material used in Infinity's
flagship Prelude drivers, M.M.D. features a stiff aluminum core that provides
exceptional strength and rigidity for clean, realistic low-frequency tones.
Amplifier: The 8" M.M.D.
front-firing cone woofer is powered by a 100-watt (RMS) amplifier.
Surround: For a smoother
response and improved durability, the woofer uses a rubber surround.
Ports: There are two
rear-firing bass ports that allow deep bass with high acoustic efficiency and
The subwoofer has a
rotary control on the rear panel for adjusting the level of the bass.
The subwoofer's phase
switch allows you to control the phase of the subwoofer's output relative to the
front speakers. If the bass sounds muddy or unclear, toggling the phase control
can sometimes strengthen the bass "attack."
Auto On/Off Circuit: The auto on/off circuit turns the power amp on when a signal is sensed and
turns the amplifier off and into standby mode approximately 10 minutes after a
signal is no longer received. An LED indicator on the rear panel glows green
when the amplifier is on and red when the amp is in standby.
Low-Pass Crossover: The
subwoofer features a continuously variable 50-150 Hz low-pass crossover that
determines the highest frequency at which the subwoofer reproduces sounds. The
crossover has a 24dB/octave slope.
and Outputs Notes
Inputs: The subwoofer
has a gold-plated LFE input and gold-plated stereo RCA inputs. If you have a
Dolby Digital/DTS receiver or processor with a low-frequency-effects (LFE)
output, you should use the LFE input on the subwoofer. If your
receiver/processor does not contain a Dolby Digital or DTS processor but has a
subwoofer output, you must use the stereo RCA inputs. If the receiver/processor
has a mono subwoofer output, a "Y" adapter is recommended to maximize
Inputs: The left and
right gold-plated 5-way binding posts allow you to connect the subwoofer to a
receiver/amplifier using speaker wire.