ACUHORN 175 User manual

ACUHORN
ACUHORN
OWNER’S MANUAL
ENGLISH
75
1
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ACUHORN
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acuhorn rosso superiore175 improved audio 2007 owner’s manual english
contents
about the loudspeakers
genuine solution
TSR200 neodymium driver
unpacking
maintenance
positioning
room acoustics
connecting
technical specifications
technical support
guarantee and service

ACUHORN
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acuhorn rosso superiore175 improved audio 2007 owner’s manual english
acuhorn RS175
The modern double driver audiophile loudspeaker
acuhorn rosso superiore175 operating on two
vectors will feel splendid in all listening conditions.
Excell in bringing out the full-bodied quality and
solid imagery of recordings. Superb low frequency
definition worked out by the double driver let you
hear controlled depth of better timed bass. Now
entertainment is enhanced by grip, pace and punch with
all round energy of musical events. Uniquely light
diaphragms transmit tremendous presence to
instruments and vocals. Applying our sound
processing invention resulted in acoustic and
spacious performance. Modern music is full and juicy.

ACUHORN
acuhorn rosso superiore175 improved audio 2007 owner’s manual english
genuine solution
Acuhorn loudspeakers introduced a new standard of soundstage presentation. Our manufacture
developed a genuine solution of sound processing. An acoustic wave is divided with a unique method
providing a total phase conformity so that reproduction of the original recording becomes precise and
clear. By applying a full wooden jacket with alternating active and opposite sides of wood structure
elements we devised a proper musical instrument. Acuhorn series project features a holographic
spaciousness of sound with a grasp of dynamics and suggestive sound reproduction unmet before.
tsr200 neodymium driver
Application of audiophile solutions. Solid cut aluminium anodized body as stability heavy mat foundation.
Special cut of a profile of an engine transporting the power of magnetic streaming, minimizing the losses
of dispersion on an air gap jump. Improvement of electric efficiency of a voice coil, the best density of
neodymium magnet selected, and new preparation of paper membranes. Application of the best silver-gold
cable Siltech G6 for the maximum clear audiopath, many tech details summing up into an overall result.
cut aluminium full heavy body 1,6 kg
neodymium high remanence 14,5 Br
pure paper light membrane 4gr
precision cut armco iron engine profile
air gap short streaming jump 0,9 mm
voice coil thin wire diameter 180 micron
clear silver-gold cables Siltech G6
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ACUHORN
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acuhorn rosso superiore175 improved audio 2007 owner’s manual english
unpacking
important safety information
Caution 175s have two drivers per enclosure, in front and in the back placed on the same height
1 Open the box horizontally
2 Position the box vertically with the aluminium base on the bottom
3 Take out side cardboard panels, for convenient release
4 Hold the loudspeakers and pull out
5 Slide out the loudspeakers on their bases, vertically
6 The regular positioning is with the outlet to the back
7 the Loudspeakers stand positioned parallelly to each other,
as far apart as possible (2,8 m)
8 In the base there are m8 threads to level them
maintenance
175s are finished in natural veneer, in the package there are white cotton gloves to handle them
Please use soft and clean cloth to clean from dust and fingerprints
Do not use domestic cleaning products because some may damage the veneer
Dust from driver's diaphragms should be removed carefully with a soft brush
You must not clean driver's diaphragms with any cleaning agents
When not listening to the loudspeakers always cover the drivers with provided cardboard shields for
protection against curiosity touch and accidental damage
Caution Drivers are screwed in in a very delicate manner. Do not touch them, do not push them
Please keep the loudspeakers in dry rooms, avoid excessive humidity as it may damage the drivers
You receive fresh loudspeakers with not broken in drivers (usually they need 100 hrs)
They cannot be played so loud as one wants - they are designed for a domestic use
The volume of the loudspeakers should be adjusted to the volume of live acoustic music, not louder
Black aluminium elements of the base are anodized, do not use sharp tools while levelling not to
damage them
Please level the loudspeakers with thick base screws not when standing upright, but slightly off
balance
J
50kg
B’ EYE
MAPLE
W W W. A C U H O R N. P L

ACUHORN
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acuhorn rosso superiore175 improved audio 2007 owner’s manual english
positioning
We recommend acuhorn rosso superiore175 to be unpacked, assembled, positioned and levelled while
consulting our dealers. To enjoy the best of acoustic aspects of acuhorn loudspeakers always take care
of careful assembly and levelling. Your attempts with moving the loudspeakers about in a listening room
will always be rewarded with discovering fullness of the soundstage.
Acuhorn rosso superiore175 loudspeakers should be placed "in the middle" of the room, they are not
corner type. Preferably, approx. 1,1 meter from side walls, 1,8 meter from a back wall, distanced 2,8
meter from each other, in a line and parallel, without toeing them in. A listener ought to be distanced
minimum 3,0 meter from the line of the loudspeakers and at least 1,2 meter from the back wall.
You are dealing with dipol loudspeakers operating forwards and to the back and so while moving them
away from the back wall You will obtain airy sound and dipol solution will enhance. Setting the
loudspeakers as far apart as possible to keep them free standing still, the effect of grasping the
soundstage will increase thanks to acuhorn solution of phase correction. The scene will focus deep
behind the loudspeakers. The principle positioning is with the outlet firing to the back.
room acoustics
To result in the best performance it is indispensable to adjust the room acoustics. After connecting the
loudspeakers You may expect possible dumping alternations. When the sound seems too bright it may be
useful to add professional sound correction elements or carpets, curtains and sofas, etc.. Usually it
does not happen to have too damped listening room. Please pay attention also to breaking large flat
surfaces, like walls, ceiling and windows. They affect unfavourable reflection of sound waves without
dispersing. Should You change the acoustics of Your room it may be required to re-position Your
loudspeakers. Fresh and new loudspeakers taken out directly from the box require approx. 100 hrs to
break in. It is an appropriate time to introduce acoustics adjustments.
alternative positioning classic positioning

ACUHORN
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acuhorn rosso superiore175 improved audio 2007 owner’s manual english
connecting
Before making any connections, switch off all elements of the audio system from the mains.Acuhorn
rosso superiore175 are loudspeakers applying one pair Terminal Nextgen WBT-0710 Ag for single-wire
connections. The binding posts are placed in the bottom base. They can be used as sockets for the
connection of 4mm banana plugs or can be used as binding posts for the connection of bare wires or
spade-terminated cables.The bare wires and spade-terminated cables are inserted from the left and right
side of binding posts respectively. Impedance of the loudspeakers is 4 ohm. The loudspeakers are
compatible with 8 ohm outputs in solid state amplifiers. When amplifiers are equipped with 2,4,8 ohm
outputs please test the best adjustment of an amplifier with the loudspeakers. Our loudspeakers are
high sensitivity 99 dB. They are naturally dedicated to low power tube amplifiers. They result in great
sounding setup with high 200W solid state mono power amplification. Acuhorn recommends reference
loudspeaker's cables and cleaning fluid for clear contact of terminals and cable for high sound quality.
technical specifications
acuhorn rosso superiore175 improved audio 2007
floorstanding dipol loudspeakers
wooden four acoustic chambers type
solid construction 2,5 milimeter pressed sheets
double driver acuhorn TSR200
cnc cut aluminium driver body
neodymium engine precision cut profile
high remanence neodymium magnet 14,5 Br
air gap short streaming jump 0,9 mm
nominal impedance 4 ohm
DC-resistance of double voice coil 2 ohm
sensitivity 99 dB
internal silver cable Siltech G6 series
air-teflon tunnel of cables
terminal silver WBT 0710 Ag
aluminium black anodized bases 29 x 43,6 cm
spikes for level M8 threads
holes in bases for fixing to the floor 27 x 39,2cm
weight 50 kg piece
dimensions W 20 x D 40 x H 175 cm

ACUHORN
www.acuhorn.pl e-mail [e-mail] acuhorn manufacture phone [phone]
acuhorn rosso superiore175 improved audio 2007 owner’s manual english
technical support
For technical support, product queries and information please contact a local dealer directly, look up
the acuhorn web site for details.
Acuhorn
kartuska 245
gdansk 80-125
Poland
phone [phone]
Www.acuhorn.pl
email: [email protected]
guarantee and service
the Loudspeakers are covered with a guarantee in accordance with the country of purchase. Acuhorn will
replace any elements that failed due to their manufacturer's fault. With all queries please inquire with
Your dealer. Caution Self-disassembling, changes and repairs or unauthorised service void the
manufacturer's guarantee. In our products there are no parts that may be self-serviced. In case of
inquieries please contact Your dealer.

ACUHORN
www.acuhorn.pl e-mail [e-mail] acuhorn manufacture phone [phone]
kartuska 245
gdansk 80-125
poland
phone [phone]
www.acuhorn.pl
email: [email protected]
ACUHORN