Overview: The THIEL HigherPlane 1.2 is a high performance,
in-ceiling loudspeaker which offers a much higher level of resolution and
realism than found in conventional in-ceiling speakers. The HigherPlane's
11-inch diameter, paintable, aluminum baffle and grille disappear into the
ceiling, leaving only excellent sound reproduction from your favorite music or
High Output, Low Distortion Drivers: The HigherPlane uses a very low
distortion, short coil/long gap, high output, metal diaphragm 6.5-inch woofer
that is coaxially mounted with a special 1-inch, high output, low distortion
metal dome tweeter.
Time And Phase Coherent: As with all THIEL loudspeakers, the
HigherPlane is completely time and phase coherent for much greater sonic
realism. THIEL's Coherent Source technology achieves the elimination of both
time and phase distortions that cause alterations in the reproduced musical
waveforms of most loudspeakers. Eliminating these distortions results in
enhanced realism, clarity, transparency and immediacy as well as improved
imaging and soundstaging in both the lateral and depth perspectives. Phase
coherence in the HigherPlane is achieved by utilizing a sophisticated
first-order electrical crossover system in conjunction with unusually wide
bandwidth drivers. Time coherence is achieved by coaxially mounting the tweeter
and woofer to cause the sound energy from each to reach the listener at the same
Enclosure: The 1.2 version uses a rigid aluminum enclosure to reduce
unwanted vibration for greater clarity and detail.
Grille: The HigherPlane 1.2's grille is magnetically
attached to the cabinet and can be removed by gently prying the grille forward.
Connections: The HigherPlane 1.2's input terminals are located on the
bottom of the speaker cabinet. The HigherPlane 1.2 uses binding posts that accept several
types of wire connections (will not accept dual banana plug connectors but
single banana plugs can be used). The input terminals are designed to be easily
tightened by hand or a 1/2 inch nut driver can be used. The speaker's input
terminals are color coded to facilitate that both speakers in a stereo system
are wired in the same polarity for maximum speaker performance. The speakers
should be connected to the amplifier with high quality cable to ensure minimal
loss of power and proper control by the amplifier.
Note: The HigherPlane 1.2 is a very high quality sound reproducer and will
benefit from use with the best associated equipment. Since it is extremely
accurate, it will reveal sources of distortion generated elsewhere in the
system. For example, distortion resulting from poor recordings or inferior
electronics will be reproduced accurately. Also, the quality of the
interconnect cables and speaker cables will significantly effect the
performance of the system
Power Requirements: It is important to have enough power to play at
the level you desire without distortion. If high sound levels are desired, the
HigherPlane 1.2's are designed to be used with amplifiers rated up to 200 watts per
channel (into 8 ohms). Since the HigherPlane 1.2 provides a 4 ohm load to the
amplifier, it is important that the amplifier be rated to deliver at least 50
percent more power into a 4 ohm load than it does into an 8 ohm load. The
HigherPlane is of above average efficiency (89 dB) and therefore requires less
than an average amount of power for average volume levels
Break-In Period: The HigherPlane 1.2's, like most speakers, require a period of
playing before they perform optimally. The amount of time depends on how loudly
the speakers are played; more time is required if played
softly, less if played loudly. At least 50 hours at moderately loud levels are
required before the
speaker is performing near optimum. You should notice even more improvement
after 100 hours
10 Year Warranty: THIEL warrants every THIEL model HigherPlane 1.2 loudspeaker
against defects in materials and workmanship to the original owner for a period
of ten years from the date of purchase. THIEL will, at no charge, replace any
defective part and make any repairs necessary to ensure its proper performance
when the defective unit is returned to us postpaid. This warranty does not cover
damage due to accident or abuse and is void if the unit has been tampered with.
This warranty is automatic and no registration is required.
Speaker Placement: The HigherPlane 1.2 is designed
for in-ceiling placement. Because of its wide dispersion and coaxial/coplanar
driver mounting, the HigherPlane 1.2 offers excellent results for a variety of
ceiling locations and listener positions. For optimum performance, the
HigherPlane should not be placed within two feet of the room's walls.
Paintable: The HigherPlane 1.2 features an off-white finish. The
speaker can be painted any desired color. To paint the speaker, first remove the
grille and insert the included painting mask to protect the driver. For the
tightest seal, you can slightly loosen the driver screws to tuck the rim of the
mask between the white rubber woofer surround and the plastic rim of the
cabinet's driver opening. Also, peel the cloth scrim from the back of the grille
before painting its front surface. After the paint is dry, reinstall the
grille's scrim and the grille onto the cabinet.
Speaker Diameter: 11.25"
Speaker Depth: 6.625"
Ceiling Cutout Opening: 10.125"
Rough Opening Without Preconstruction Bracket: 10.25"