SOUNDIMPRESS HY250-1CH MONO User manual

SoundImpress – because the best is just about good enough.
HY250-1CH MONO
USER MANUAL
English

• Ncore® technology inside
• Impressive performance despite load
• Compact design
• Dimmable LED
• XLR input, binding posts output
• Assembled by hand in the Netherlands
• 5 year Warranty
This SoundImpress amplier is a self-
contained high-end class-D mono amplier
intended for a wide range of audio
applications, ranging from public address
systems to ultrahigh-delity replay systems
for studio and home use. The SoundImpress
brand stands for outstanding quality,
timeless designs, and Dutch craftsmanship.
This amplier is built to last as it is
extensively tested and manually assembled
to ensure every last detail is checked.
SoundImpress HY250-1CH Mono
250WPC | Ncore® | Powered by Hypex
HY250-1CH
INTRODUCING

04
05
06
07
10
11
INTRODUCTION
SAFETY INSTRUCTIONS
WARRANTY TERMS
DISPLAY OF CONTROL FUNCTIONS
GET STARTED
SPECIFICATIONS
TABLE OF CONTENTS

SoundImpress HY250 Mono Amplier
250WPC | Ncore® | Powered by Hypex
The HY250-1CH is a compact, high performance,
one channel and no-nonsense class-D power
amplier. It incorporates the proven and renown
Hypex Ncore® technology which settles for
nothing less than an impressive performance!
The performance stands out with authoritative
and tightly controlled low registers, high
dynamics and crystal clear mid- and high-
frequencies. The super-low noise level generates
a completely black background to reveal the
tiniest of details in every recording.
All SoundImpress ampliers are hand assembled
in the Netherlands. The custom milled aluminum
enclosure houses the Hypex NC250MP amplier
module, the best thermal material for audio
devices. The in- and output connections are
provided through high-quality binding posts
from CMC and XLR-chassis from Neutrik and
wiring from Mogami and Belden. It can operate
from both 110 and 230 VAC mains voltage due to
it's universal mains input compatibility featuring
an automatic input voltage doubler.
SoundImpress
HY250-1CH
INTRODUCTION
Small and powerfull
This amplier can deliver all its power from as
low as 2 ohm impedance combined with low
idle loss, very low distortion and noise levels.
Chief distinguishing features are at frequency
response irrespective of load impedance, nearly
frequency independent distortion behaviour
and very low radiated and conducted EMI. This
results in performances such as the max output
power of 250 Wrms at 4 ohm, a Signal-to-Noise
Ratio (SNR) of 121 dB and astonishing distorting
level of 0.0015%.
An amplier is only as good as the power supply
it contains. In this SoundImpress amplier,
the power supply and amplier are located on
one board. The switched-mode power supply
(SMPS) providing the power for the amplier is a
compact, high power, highly efcient, regulated
half bridge converter with synchronous
rectication on the main output rails. These
properties make this technology ideal for
powering Class D audio ampliers.
HY250-1CH | Page 4

SAFETY INSTRUCTIONS
SAVE THESE SAFETY REQUIREMENTS FOR FUTURE REFERENCE. HEED ALL WARNINGS
AND SAFETY REQUIREMENTS MARKED IN THIS MANUAL AND ON THE AMPLIFIER.
CLEANING - Unplug this product from the
electrical outlet before cleaning. Do not use
liquid cleaners or aerosol cleaners. Use a damp
cloth for cleaning.
VENTILATION - Slots and openings in
the casing serve for ventilation and reliable
operation of the product. They also protect
the product from overheating. These openings
must not be blocked or covered. These openings
should never be blocked by placing the product
on a bed, sofa mat or the like. Also, this product
should not be placed in an enclosed space such
as a bookcase or shelf unless proper ventilation
is provided or the manufacturer's instructions
are carefully followed.
POWER SOURCES - This product should be
connected only to the power source indicated
on the label. If you are not sure which power
source is used in your home, contact the dealer
or the local power company. The best way to
disconnect the amplier from power supply is to
remove the power plug from the outlet. Unplug
the power cord from the outlet if the unit will not
be used for several months or longer.
OV E R L OA D I N G - Ensure that outlets, extension
cords, and built-in additional connections are not
overloaded as this may result in re or electric
shock.
OBJECTS AND LIQUIDS - Never push objects
of any kind into this product as they may touch
dangerous voltage points or short-circuit which
may result in re or electric shock. Never spill
liquid on this product.
WARNING: Do not expose this amplier to
water, spills or splashes and do not place objects
lled with liquids, such as vases, on the device.
As with all electronic products, take care not to
spill liquids into any part of the system. Liquids
can cause malfunction and/or cause a re.
HY250-1CH | Page 5

WARRANTY TERMS
LIMITED WARRANTY - Sound Imports warrants this device for a period
of ve years after the original date of purchase against defects due to faulty
workmanship or materials arising from Normal Use of the device. The warranty
covers working parts that affect the function of the device. It does NOT cover
cosmetic deterioration caused by fair wear and tear, or damage caused by
accident, misuse or neglect. Any attempt to modify or take apart the device (or
its accessories) will void the warranty.
If you discover a defect, notify SoundImports during the warranty period.
Claims under warranty must be supported by reasonable evidence that the date
of the claim is within the warranty period. To validate your warranty, please
keep your original purchase receipt together with these warranty conditions
for the duration of the warranty period. Replacement products claimed under
warranty are not entitled to renewed 5-year warranty coverage.
If you discover a defect, notify SoundImports during the warranty period.
Claims under warranty must be supported by reasonable evidence that the date
of the claim is within the warranty period. To validate your warranty, please
keep your original purchase receipt together with these warranty conditions
for the duration of the warranty period. Replacement products claimed under
warranty are not entitled to renewed 5-year warranty coverage.
SUPPORT - We are continuously working to enhance your experience with
our products. If you have any comments, remarks or have found a defect,
please contact us. If you have any problems with your amplier please check
this user manual. If this manual is not sufcient to troubleshoot your problem
contact SoundImports support department. The latest datasheets and
manuals can be found on our website. If you can't nd the answer there, you
can also contact us and we will be happy to help!
HY250-1CH | Page 6

1. On / off switch
2. Fuse tray '
3. Power input "
4. Balanced input
5. Channel output (+)
6. Channel output (-)
' The fuse is supplied as standard. When replacing it, only use the original value.
" Attention: Risk of electric shock.
WARRANTY TERMS DISPLAY OF CONTROL FUNCTIONS
HY250-1CH | Page 7

1. Front panel with engraved logo
2. Dimmable LED indicator
3. Bottom view
4. Switch for LED indicator '
' See the next page for an explanation of the LED switch.
DISPLAY OF CONTROL FUNCTIONS
HY250-1CH | Page 8

DISPLAY OF CONTROL FUNCTIONS
0 --- LED OFF
1 --- Normal brightness
2 --- Max brightness
DISPLAY OF CONTROL FUNCTIONS
HY250-1CH | Page 9

GET STARTED
START - Before turning on your new amplier, rst make all connections. Ensure that
the volume on your pre-amplier or playback device is set to a minimum.
PLAY - Turn on the amplier. Slowly increase the volume while playing some
music.
ENJOY!
CONNECTION - The HY250-1CH has one set of speaker connections. Connect the
speaker terminals marked “+” and “-” to the corresponding “+” and “-“ terminals of your
designated speaker.
This amplier will work with both balanced and unbalanced inputs.
For single-ended sources you can use a RCA to XLR cable or converter plug. The cable or
converter should short signal ground (XLR pin 1) with negative signal input (XLR pin 3).
HY250-1CH | Page 10

GET STARTED SPECIFICATIONS
Rated power output (RMS) 1 x 250 watts at 4 ohms
1 x 130 watts at 8 ohms
1 x 180 watts at 2 ohms
Minimum load 2 ohms
Signal-to-noise ratio (SNR) 121 dB
Distortion 0.0015% THD+N (10 Hz - 20 kHz)
Efciency 92 %
Frequency response 0 - 50,000 Hz
Circuit Topology Ncore®
Amplier classication Class D
Speaker output channels 1
Input connection type XLR
Speaker output connection type Banana
Power requirements 110 / 230 VAC (symmetric supply +/-)
Power inlet connector IEC C14
Dimensions (D x W x H) 191mm x 200mm x 78mm (size incl feet, excl
connectors)
Case material Aluminum
HY250-1CH | Page 11

Do you wish to read this manual in a
different language? Or prefer a digitial
version? Scan the QR code!
SoundImports
Pe ize r we g 97A
9727AJ Groningen
Nederland
Tel: [phone]
E-mail: [e-mail]
Btw-nummer: NL861325254B01
KvK-nummer: 78268753