Klein + Hummel P 110/N Owner's manual

P110
Studio Monitor
Installation and Operation

Page2
Safety Instructions
It is absolutely essential that you read these safety instructions carefully before connecting and using this K+H
product. Your safety depends on it. Furthermore, failure to follow these instructions voids the warranty. To ensure
safe operation for years to come, keep these instructions in a safe place for future reference. K+H has manufactured
this product in accordance with IEC 92 (SEC) 39 standards, then tested and delivered it in safe operating condition.
To maintain it in this condition, you must:
•observe all safety instructions,
•use the product only as described herein,
•have any maintenance, repairs, or modifications performed only by K+H or other authorized personnel, and
•ensure that the room in which you use this product is wired in accordance with the local electrical code.
Warning!
•When the interior of the cabinet is exposed, touching some parts can lead to an electric shock.
•If you need to gain access to the interior electronics of the unit, always disconnect the unit from any and all power
sources first.
•Any repairs, maintenance, or other service of the unit when its interior compartment is exposed may only be
performed safely (in accordance with VBG 4) by authorized technicians familiar with all the risks involved. Even in
an unplugged state, a fully charged capacitor in the unit can zap the unsuspecting.
•Loudspeaker output jacks labeled with the IEC 417/5036 emblem (Fig. A, right) may be carrying
dangerously high voltages. If your unit has this emblem, ensure that any connections to be
made between these jacks and the speakers themselves are made before powering up the
unit, and are done so only with manufacturer-approved interconnecting cables.
•If you need to replace any fuses, ensure that the replacements are of exactly the same type,
value and voltage as the originals, as spelled out in the technical specifications at the rear of
this manual.
•Do not use "repaired" fuses.
•If you do not have any fuses on hand of the specified size, type, and value, do not hot-wire the
contacts in the holder by short-circuiting them.
•Certain areas of the cabinet, cover, and rear panel can achieve extreme temperatures and are
therefore marked with a "HOT" label (Fig. B). Refrain from touching any heat sink or ventilation
grille.
•High volume levels are known to cause permanent - i.e. irreversible - hearing damage, especially
when listened to without sufficient breaks. The higher the levels, the more frequent and exten-
ded must be the breaks. Avoid standing too close to loudspeakers that are being driven at high
levels. If you must be exposed to high sound pressure levels over an extended period of time,
use hearing protection.
Mains Connection:
•This unit is designed for continuous operation.
•Ensure that the operating voltage of the unit matches that of the local mains current (AC line voltage).
•Always check before connecting the power cable to the mains socket that the power switch on the unit itself is set
to off ("O").
•Use the power cable or power supply that came with the unit to connect to the mains socket (wall outlet).
•Power supply: a damaged power cable may not be repaired. Use a new cable.
•Avoid plugging the mains cable into a power strip that already has several other power-consuming devices
connected to it.
•Avoid using extension cables. The unit must be connected to a mains socket close to it, and that socket should
be freely accessible.
Installation:
•This product may only be placed on a stable, clean, horizontal surface.
•Do not expose this product to vibration.
•Do not operate this product anywhere near water or other liquids. Do not use it near a sink, swimming pool,
bathtub, or in any damp room or area. Electrical shocks carried through water can kill. Do not place any beverages
whatsoever on or near this product, as liquids can kill electronic components.
•Ensure sufficient ventilation around the product to allow for adequate heat dissipation, especially near the rear
panel and the sides of the cabinet (minimum of 8 inches from the nearest wall). The unit may only be installed in
a rack if measures are taken to ensure sufficient ventilation and if the mounting instructions of the manufacturer
are followed. Do not block or cover any heat sink, fan, or vent.
•Do not place the product where it will be in the path of direct sunlight, and keep it a safe distance away from
radiators and other heaters of any kind.
•If you bring this product from a cold environment into a warm one (such as from a vehicle into a studio), it is quite
possible that condensation will form inside the cabinet. Please allow the unit sufficient time for acclimatisation
to room temperature (minimum thirty minutes) before connecting and powering up.
•To avoid accidents, do not use any accessory equipment with this product which is not approved by the manufacturer,
particularly mounting accessories. Do not place this unit on any unstable platform, cart, stand or table. Should the
unit fall, it can cause bodily injury to persons, or can be damaged itself.
•To protect this product from lightning damage during a thunderstorm or from power surges during an extended
absence, disconnect the power cable from the wall outlet.
Fig. A
Fig. B

Page3
Passive Nearfield Monitor
P 110/N and P 110/H
Installation - Operation
Figure 1: Front view of P 110
Figure 2: Input, P 110/N and P 110/H Figure 3: Room EQ, P 110/N
Figure4: Power Range,P 110/H

Page4
Introdution
The passive nearfield monitor P 110 has been devi-
ved from our active studio monitor O 110 and offers
many of the advantages of the O 110. The P 110 is
offeredin alow impedance8 Ohmversion (P 110/N)
andwitha 100Volt/ 166Ohmtransformer connection
(P110/H). Whenonlya “P110“designationis quoted
in the description below, it is for both models.
Pleasereadthesafetyinstructiononpage
2 before connecting the monitor.
1. InstallationandOperation
1.1 OperatingConditions
The K + H model P 110 passive nearfield mo-
nitor is intended for use over a range of ambi-
enttemperatures from +10°C to +40°C (+50°
Fto+104° F).Duringtransport or storage,tem-
peratures from -25° C to +70° C (-13° F to
158°F) arepermissible.
1.2 Installation
The loudspeaker chassis used in the P 110
aremagneticallyshielded, allowingtheseloud-
speakers to be mounted side by side with
avideo orcomputer monitorwithout adversely
affecting the screen. One of the finer features
of the P 110 monitor is its unusually uniform
off-axis directivity,which results ina verywide
”sweetspot”. Preferred placementof thecabi-
netis in theupright position, forthe dispersion
in the verical plane was intentionally kept nar-
rowerthan inthe horizontal.
Incertain cases, forexample if thereare hard,
reflective surfaces both to the left and right of
the loudspeakers, it would make sense to
operate the loudspeakers on their side. The
reduced horizontal directivity in this position
would thenbe helpfulin minimizing anyphase
cancellation caused by comb - filter effects.
Whenconsidering placement,please takeinto
consideration the possibilities offered by both
ofthe roomcompensation switches described
in section 1.4.
On the back of the unit you will find two M8-
size threaded bushings for use with various
mounting options. These holes are labeled
”Speakermount option.”The bushings willac-
commodate either the LH 32 wall bracket ad-
apter or the LH 31 mounting bracket for use
withadditional mountingaccessories.
The plastic screws that occupy these
threaded holes from the factory may not
be used for the actual mounting of a
loudspeaker under any circumstances.
Please ensure that these threaded holes are
alwayspluggedsothat the volumeofairsealed
within the cabinet may only pass through the
precisely calculated bass - reflex openings.
1.3 Connections
For both the 100 V and 8 Ohms models there
are two possible connections on the rear pa-
nel: -SPEAKON
-Speakerterminals
For the SPEAKON connector the contacts 1+
and1-are providedfortheinput signal,asseen
on rear panel. For the speaker terminals the
red contact is provided for the „plus“ wire, the
black contact for the „minus“ wire. Both con-
nectorsarewired parallel forlooping(plus=red/
minus=black).
1.4 Equalization ( P 110/N only)
Thefour positionrotary switch(Fig.3 insquare
“Equalization“) serves to adjust the frequency
response line in order to compensate for va-
rying positions in the room.
Position 0 = “free field“ position
PositionA = position on table surface
PositionB = positionon meterbridge
PositionC =positioninbetweenotherequip-
ment or flush mounted in wall
Importantnote:Becausethestudioacousticwill
influencethe listeningimpression atthe listen-
ning point we recommend to try all four switch
positionsafter installation.
Thefrequency response curvesat eachswitch
positionare shown infig. 11.
1.5 Care of the Cabinet
The cabinet housing of the K + H P 110 active
studiomonitorcomesstandardwith acharcoal-
grey(RALcolor7021)orwhite(RALcolor9010)
coloredenamel finish.Handle thecabinet with
careto avoiddamagingthe finish.To cleanthe
cabinet, use a soft cloth with a mild cleaning
agentonly.Undernocircumstancesshouldyou
use chemical agents or any cleaners with ab-
rasive action.

Page5
2. Diagrams
The outstanding acoustic impression made by the
P 110 is confirmed by measurements using today’s
mostcritical test methods.The testplots shown here
UsingthenewmaterialLRIM(LowResonanceIntegral
Molding)allowedustoseamlesslyintegrateawavegui-
deintothebafflethat isideal foroptimaldispersion.So
anellipticalhornforthetweeterwasadded.Thuscame
tobethedispersionpatternwementionedearlierwhich
isnarrowerverticallyandbroaderhorizontally,asisclear-
ly evident in the test plots presented in Figure 6 and 7.
and on the next several pages are but a small sam-
plingof these measurements.
Figure8: Frequency response, (“freefield“) Figure 9: Impedance of P 110/N
Figure 6: Horizontal Directivity
Figure 7: Vertical Directivity

Page6
Figure 10: THD at 95 dB/SPL Figure 11: Cummulative Spectral Decay Plot
The loudspeaker’s cumulative spectral decay plot
indicates a very clean decay without any major
resonancesor standingwaves being evident.
Figure 12: Meterbridge EQ, P 110/N
3. Warranty Information
AllK+H products undergoan extensiveprocedure of
qualitycontrol testing beforeleavingthefactory.Before
semiconductorsaremountedonthecircuitboard,they
are subject to rigorous tests. Every single unit is
guaranteedtomatchits technicalspecificationswithin
strictpredetermined tolerances.
Pleasestore theoriginal cartonin asafe, dry place.If
youshould everneedwarranty service,put theunit in
its original packing material and carton together with
a detailed description of the problem, and ship it
(freightprepaid) to our distributor or directly to:
KLEIN + HUMMEL GmbH
Customerservice
Zeppelinstrasse12
73760Ostfildern /Germany
K+Hwarrants,thattheproductisfreefrom anydefects
in both material and manufacturing and that it meets
the specifications. A warranty case can only be
acknowledged under condition that the complaint is
filedto ourdistributor orto usin writingwithin 8 days
after delivery or detection of the fault. Not covered
under this warranty are damages due to inexpert
packing and shipment, wear and tear, improper
handling,installation, operationandmaintenance.
Thelimitation periodfor warranty claimsis described
in the terms and conditions of K+H GmbH. Its our
choicetorepair,tosupplyanewproductortowithdraw
fromthe contract.
Intheevent warrantyserviceisrequired, presentation
of a warranty card will not be necessary. Proof of
purchase date can be made by filing copies of
appropriatedocuments (invoice,delivery note).

Page7
4. Technical Specifications P 110/N P 110/H
Sensitivity 87 dB/SPL/W/m 86 dB/SPL/W/m
SPL
short term at 1 m (half...) 111,5 dB/SPL 110,5 dB/SPL
Impedance 8 Ω166/333/666 Ω, switchable
Nominal power handling capacity 80 W 60/30/15 W, switchable
Frequency Range ("freefield) 85 Hz - 20 kHz, ± 2 dB
72 Hz - 24 kHz, ± 3dB
85 hz - 20 kHz, ± 2 dB
72 Hz - 24 kHz, ± 3dB
THD (k2and k3over 150 Hz) 90 dB/SPL at 1m 90 dB/SPL at 1m
Directivity horizontal ± 40° (-6 dB)
± 30° (-6 dB)
± 40° (-6 dB)
± 30° (- 6 dB)
Crossover
Frequency
Slope Woofer
Slope tweeter
3 kHz
12 dB/Okt
18 db/Okt
3 kHz
12 dB/Okt.
18 dB/Okt.
Protection circuitry HF driver protection against overload
automatic reset
Room compensation EQ
4 steps
Meterbridge position
-----------------
Drivers
LF/Woofer
HF/tweeter
145 mm, 8 Ω, Composite-Sandwich-Diaphragm,
25 mm, 6 Ω, titanium fabric dome
Connectors 1x SPEAKON, 2 speaker terminals
Dimensions (WxHxD) 170 x 267x 190mm
Net volume, inside 6,5 Liter
Wei g ht 5,0 kg 5,0 kg
Surface finish anthrazit lackiert (RAL 7021) oder weiss lackiert (RAL 9010)
andere Farben auf Anfrage
Shielding standard
Mounting
please read at the newest Studio-Monitoring Catalog

K+H Vertriebs- und Entwicklungsgesellschaft mbH
30900 Wedemark, Germany
Phone [phone]
Fax [phone]
www.klein-hummel.com
Printed 11/06 518152