Closed Back Design, High
Sound Insulation and Output:
Closed back design is
almost a necessity for high quality multi-track recording. When a vocalist
listens to previously recorded tracks, they should not leak into the vocal microphone.
Or when a drummer listens to click track and other instruments, sound of his
drums should not over power what he is trying to listen and sync to. Also an
engineer trying to mix a live concert, should be able to “solo” the track he is
trying to adjust without much leakage from the room sound. In many of these
situations having the ability to increase the sound volume of headphones for a
short period of time is also a necessity. HP1 is designed with all of these
factors in mind. It provides superb sound insulation and an efficient and
powerful transducer that can produce sufficient loudness even if the headphone amp
or mixer output is not loud enough for the environment. Large circular ear pads
covered with soft plastic completely encircle the ears for maximum comfort and
insulation. So in most situations, a lower level of playback is necessary
compared to headphones with other designs.
Durable Construction:
Use of impact resistant
material and modular construction ensure longevity of HP1. Although these
headphones are made to last under demanding use, cable, ear pads, transducers,
or even the frame can be replaced if something out of the ordinary happens to
them. The detachable cable with mini XLR
connector helps to easily store the headphones when not in use.
Specifications
Frequency Response: 10 Hz -35 kHz Max. Sound Pressure Level (SPL): 110
dB Total Harmonic Distortion (THD): <0.2% Nominal impedance: 32 Ω
Type: Closed Back, with internal sound ports Ear Coupling:
Around-the-ear Transducer Type: Dynamic Cable Type: Single detachable
with Mini XLR connection Cable Length: 10 feet Plugs: 1/8 inch (3.5mm),
and ¼ Inch (6.3mm) screw-on type stereo plugs
Features
Reference
class headphones designed for monitoring recordings, mixing, mastering, and
critical listening
Detailed
sound reproduction throughout the entire audible frequency range with superb
stereo imaging
Large
and powerful transducer for extended dynamic range and head-room during loud passages
Closed
back design with internal ports for superb insulation from external sound
sources
Soft
around-the-ear circular pads for comfort during extended use
Detachable
cable with mini XLR connector for easy storage and replacement
Screw-on
adapter plug for reliable connection
Internal Sound Ports
A drawback with many
closed back headphones is lack of good bass reproduction. Three types of tuned internal
sound ports in HP1 (inside the ear cups) allow sound waves to travel between
the two sides of the transducer, thus allowing it to vibrate freely, much like
open back headphones, and to produce correctly proportioned bass response. Furthermore
the uneven surface shape of inside the ear cups helps to minimize standing
waves.
The Transducer
The large 48mm
transducer features a ribbed diaphragm. The ribs provide more rigidity for the
thin diaphragm so that the entire surface can move together, minimizing distortion.
A sound port in the center of the transducer magnet prevents air from being
trapped in the dome over the voice coil. This allows free movement of the voice
coil, contributing to the warm and natural sound of HP1.
Low nominal resistance
of the transducer is integral to its high efficiency. At any given output level,
HP1 is considerably louder than most headphones. Thus even small portable
devices can provide sufficient sound volume.
Durable Construction
Use of impact resistant
material and modular construction ensure longevity of HP1. Although made to
last under demanding use, cable, ear pads, transducers, or even the frame can
be replaced if something out of the ordinary happens to them. The detachable cable with mini XLR connector
helps to easily store the headphones when not in use.
Comfort
Professional headphones need
to be comfortable to accommodate long hours of use. HP1 only weighs 220 grams
(13.75 ounces) and this small weight is evenly distributed to top and sides of
the head. The ear pads are covered with very soft plastic that is pleasant to
the touch and they are large enough that the ears fit completely inside. So the
weight of the headphones rests on the head and not the ears. The height of the
top band is self adjusting so each time you put HP1 headphones on, they
immediately feel comfortable.
