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Introducing NaOTM Loudspeakers
By Music and Design TM....
By Music and Design TM....
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The NaO II
rear tweeter.
rear tweeter.
The NaO II:
The NaO II belongs to a growing family of high performance, open backed (dipole) speaker systems using
conventional drivers. A complete plan set with required PCB is available for $250. The NaO II can be build for
about $1800 plus cabinets. The system is of a modular format consisting of four components:
1) A midrange/tweeter panel;
2) A unique U-frame woofer system;
3) A passive midrange/tweeter crossover;*
4) An Active Crossover Equalization Unit.
The NaO II uses a hybrid active/passive design philosophy in a cost effective, biamplified format. A simple
passive crossover is used between the midrange and the tweeter. The ACEU controls the woofer/panel
crossover and required dipole equalization. The result is a system that achieves many of the advantages of a
fully active 3-way system without the need of additional amplifiers. The midrange is handled by two18 cm Scan
Speak 8545 drivers in an MTM format with a 1 inch, fabric dome tweeter (optional Seas 27TDFC or T25
Millennium). A switchable rear tweeter (Seas 27TDFC) is included for improved spectral balance at higher
frequencies.
The NaO II system employs a damped U-frame woofer system, using either a single or dual Peerless 10" XLS
woofers for each channel. The U-frame format achieves nominally 6dB greater sensitivity on axis than a more
conventional H-frame or W-frame dipole woofer of similar bulk size (length) and driver compliment. As a result,
the single woofer version of the NaO II U-frame can produce low frequency sound pressures of the same
magnitude as a system using dual 10" XLS woofers in an H or W-frame format of similar front to back length.
The custom designed active crossover/eqaulization unit adds flexibility in tuning the system to your tastes and
to your room.
A unique feature of the NaO II woofer system is that it can be operated in user selectable modes as either a
U-frame or a sealed box woofer. When the NaO II woofer system is place in sealed box mode, as might be
done during home theater use, the single woofer per side version can produce low frequency sound pressures
that are in excess of those which can be achieved with a typical single 12" subwoofer without an additional
amplifier or crossover, or the associated additional group delay. Thus, there is no need for an additional
subwoofer with the NaO II, even when used in home theater applications. If even higher sound pressures are
required the dual woofer configuration of the NaO II U-frame would be recommended, providing greater low
frequency capability than a home theater system employing two typical 12" subwoofers. The modular format of
the NaO II also allows considerable architectural flexibility in its cabinet design without impacting performance.
The NaO Mini:
The NaO Mini is a 2-way hybrid design based on the Peerless Exclusive 7" midwoofer and Seas 27TDFC
tweeter in an MTM format combined with a conventional sealed box subwoofer based on the Peerless XXLS
woofer. The Mini MTM panels can be used as a stand alone 2-way system at moderate listening levels with
limited bass response. Plans with required PCB are only $175. As a DIY project the Mini system, including
stereo, powered subwoofers can be build to under $1300. The Mini is a dipole system at entry level cost with
a level of performance approaching that of the NaO II. The Mini does not include a rear tweeter.
NaO systems are available in several optional formats from complete plans, including the required printed
circuit board for the active circuits, to assembled and tested passive and active crossovers. An optional active
midrange/tweeter crossover module is also available for the NaO II making it a fully active system requiring a
minimum of 3 channels of amplification per speaker. To learn more about NaO speakers please browse using
the menu to the left or contact Music and Design with your questions or to arrange an audition.
*A fully active version of the NaO II is also available.
The NaO II belongs to a growing family of high performance, open backed (dipole) speaker systems using
conventional drivers. A complete plan set with required PCB is available for $250. The NaO II can be build for
about $1800 plus cabinets. The system is of a modular format consisting of four components:
1) A midrange/tweeter panel;
2) A unique U-frame woofer system;
3) A passive midrange/tweeter crossover;*
4) An Active Crossover Equalization Unit.
The NaO II uses a hybrid active/passive design philosophy in a cost effective, biamplified format. A simple
passive crossover is used between the midrange and the tweeter. The ACEU controls the woofer/panel
crossover and required dipole equalization. The result is a system that achieves many of the advantages of a
fully active 3-way system without the need of additional amplifiers. The midrange is handled by two18 cm Scan
Speak 8545 drivers in an MTM format with a 1 inch, fabric dome tweeter (optional Seas 27TDFC or T25
Millennium). A switchable rear tweeter (Seas 27TDFC) is included for improved spectral balance at higher
frequencies.
The NaO II system employs a damped U-frame woofer system, using either a single or dual Peerless 10" XLS
woofers for each channel. The U-frame format achieves nominally 6dB greater sensitivity on axis than a more
conventional H-frame or W-frame dipole woofer of similar bulk size (length) and driver compliment. As a result,
the single woofer version of the NaO II U-frame can produce low frequency sound pressures of the same
magnitude as a system using dual 10" XLS woofers in an H or W-frame format of similar front to back length.
The custom designed active crossover/eqaulization unit adds flexibility in tuning the system to your tastes and
to your room.
A unique feature of the NaO II woofer system is that it can be operated in user selectable modes as either a
U-frame or a sealed box woofer. When the NaO II woofer system is place in sealed box mode, as might be
done during home theater use, the single woofer per side version can produce low frequency sound pressures
that are in excess of those which can be achieved with a typical single 12" subwoofer without an additional
amplifier or crossover, or the associated additional group delay. Thus, there is no need for an additional
subwoofer with the NaO II, even when used in home theater applications. If even higher sound pressures are
required the dual woofer configuration of the NaO II U-frame would be recommended, providing greater low
frequency capability than a home theater system employing two typical 12" subwoofers. The modular format of
the NaO II also allows considerable architectural flexibility in its cabinet design without impacting performance.
The NaO Mini:
The NaO Mini is a 2-way hybrid design based on the Peerless Exclusive 7" midwoofer and Seas 27TDFC
tweeter in an MTM format combined with a conventional sealed box subwoofer based on the Peerless XXLS
woofer. The Mini MTM panels can be used as a stand alone 2-way system at moderate listening levels with
limited bass response. Plans with required PCB are only $175. As a DIY project the Mini system, including
stereo, powered subwoofers can be build to under $1300. The Mini is a dipole system at entry level cost with
a level of performance approaching that of the NaO II. The Mini does not include a rear tweeter.
NaO systems are available in several optional formats from complete plans, including the required printed
circuit board for the active circuits, to assembled and tested passive and active crossovers. An optional active
midrange/tweeter crossover module is also available for the NaO II making it a fully active system requiring a
minimum of 3 channels of amplification per speaker. To learn more about NaO speakers please browse using
the menu to the left or contact Music and Design with your questions or to arrange an audition.
*A fully active version of the NaO II is also available.
An interpretation
of the single
woofer version
of the NaO IIt
by Mike Hunt,
PA.
Cabinets by Lee
taylor
of the single
woofer version
of the NaO IIt
by Mike Hunt,
PA.
Cabinets by Lee
taylor
Não em uma caixa.
"Not in a box"
"Not in a box"