K + H freePort PAS 400 User manual

Installation & Operation Manual
freePORT
PAS 400
Portable active loudspeaker
058-E0146
Version 060328

2 freePORT PAS 400 Version 060328
Content
Safety Instructions ................................................................................................................................................. 3
1 Installation & Set-up ........................................................................................................................................ 6
1.1 Safety Precautions ............................................................................................................................................... 6
1.2 Deliverables ........................................................................................................................................................... 6
1.3 Operating Conditions ........................................................................................................................................... 6
1.4 Set Up ...................................................................................................................................................................... 7
1.5 Power / Mains Connection (1) ........................................................................................................................... 7
1.6 GROUND LIFT Switch (2) ...................................................................................................................................... 8
1.7 Fuses (3) and (4) .................................................................................................................................................. 8
1.8 Powering with a 12-16 Volt DC External or Auto Battery (5) ..................................................................... 8
1.9 Power Switch (6) .................................................................................................................................................. 8
1.10 Power On Indicator (7) ...................................................................................................................................... 9
1.11 Battery Charging Circuit & Loading Indicator (8) ........................................................................................ 9
1.12 Deep Discharge Cut-Off Circuit ...................................................................................................................... 10
1.13 Connecting Signal Sources ............................................................................................................................. 10
1.14 Audio and DC Outputs ..................................................................................................................................... 12
1.15 PDD 63 Delay Unit ............................................................................................................................................ 12
2 Operation ......................................................................................................................................................... 13
2.1 Dynamic Microphones - Distant-Miking Set-up ............................................................................................ 13
2.2 Dynamic Microphones - Close-Miking Set-up ................................................................................................ 13
2.3 Electret-Condenser Microphones - Distant-Miking Set-up ......................................................................... 13
2.4 Electret-Condenser Microphones - Close-Miking Set-up ............................................................................. 13
2.5 Mixing Console or Line-Level Inputs ............................................................................................................... 13
2.6 Recording from the PAS 400 ............................................................................................................................ 13
2.7 TONE Controls ...................................................................................................................................................... 14
2.8 Rechargeable Battery -Description ................................................................................................................. 14
2.9 Battery Replacement and Disposal ................................................................................................................. 14
3 Troubleshooting ............................................................................................................................................. 15
4 Performance Curves ....................................................................................................................................... 16
5 Product Specifications ................................................................................................................................... 17
6 Warranty Information ................................................................................................................................... 21

freePORT PAS 400 Version 060328 3
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:
yobserve all safety instructions
yuse the product only as described herein
yhave any maintenance, repairs, or modifications performed only by K+H or other
authorized personnel
yensure that the room in which you use this product is wired in accordance with the
local electrical code
Mains Connection: yThis unit is designed for continuous operation.
yEnsure that the operating voltage of the unit matches that of the local mains
current (AC line voltage).
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 labelled with the IEC 417/5036 emblem (Fig. A) 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.
Warning!
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 fuses 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 extended 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.
Warning!

4 freePORT PAS 400 Version 060328
yAlways check before connecting the power cable to the mains socket that the power switch
on the unit itself is set to off ("O").
yUse the power cable or power supply that came with the unit to connect to the mains
socket (wall outlet).
yPower supply: a damaged power cable may not be repaired. Use a new cable.
yAvoid plugging the mains cable into a power strip that already has several other power-
consuming devices connected to it.
yAvoid using extension cables. The unit must be connected to a mains socket close to it, and
that socket should be freely accessible.
Installation: yThis product may only be placed on a stable, clean, horizontal surface.
yDo not expose this product to vibration.
yDo 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.
yEnsure 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.
yDo 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.
yIf 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 acclimation to room temperature (minimum thirty
minutes) before connecting and powering up.
yTo avoid accidents, do not use any accessory equipment with this product that is not
approved by the manufacturer, particularly mounting accessories.
yDo not place this unit on any unstable platform, cart, stand or table. If the unit falls, it can
cause bodily injury to persons, or can be damaged itself.
yTo 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.

freePORT PAS 400 Version 060328 5
freePORT PAS 400
Rear Panel View
Numbered items correspond to explanations in the text

6 freePORT PAS 400 Version 060328
1 Installation & Set-up
1.1 Safety Precautions
Note!
Please read and follow all of the safety precautions in this manual! It is absolutely essential
that you read these safety instructions carefully before connecting and using this product.
Your safety depends on it. Furthermore, failure to follow these instructions voids the
warranty.
To ensure safe operation for many years, 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 a safe operating condition. To maintain it in this condition, you
must:
yobserve all safety instructions,
yuse the product only as described herein
yhave any maintenance, repairs, or modifications performed only by K+H or its authorized
agents
yensure that the room in which the product is used is wired in accordance with local
electrical codes
If the loudspeaker will be installed in an area where people could go underneath it, then it
should be secured with an additional safety cable, which can be attached to the carrying
handles!
1.2 Deliverables
y1 freePORT PAS 400 active PA loudspeaker system
y1 power supply cable
y1 Installation & Operation Manual
1.3 Operating Conditions
The temperature limits for the freePORT PAS 400 active PA loudspeaker system are as
follows:
Operating Temperature:
+14 to +104 °F (-10 to +40 °C)
Storage or Transportation Temperature:
+5 to +104 °F (-15 to +40 °C)
If the temperature of the loudspeaker falls below 5 °F (-15 °C) at any time, the rechargeable
battery may be permanently damaged.
The freePORT PAS 400 will operate in any position and under a variety of conditions. It is,
however, not watertight and should only be installed or operated in dry conditions. Areas
with excessive moisture, considerable dust or aggressive chemicals should also be avoided.
The freePORT PAS 400 is not for outdoor installations. Temporary outdoor usage is possible,
but only within the temperature limits and in no situations where water can directly come in
contact with the unit. For operation under rainy conditions, the LRH/S Rain Hood accessory
must be used.
The coated loudspeaker cones can handle temporary exposure to fog but in no case can they
tolerate any dew or condensation.

freePORT PAS 400 Version 060328 7
If a small amount of moisture or dew has formed on the cabinet or the back panel, e.g. after
transportation or storage, carefully wipe off all of the moisture with a clean, soft cloth and
allow the unit to acclimate in a warm, dry environment for at least two hours before applying
power to the unit or operating it.
1.4 Set Up
1.4.1 Tripod or Pole Mounting
The freePORT PAS 400 enclosure is fitted, on the bottom, with a standard 35 mm mounting
flange for tripod or pole mounting. It can also be mounted to the LST 60 spiked pole for
outdoor use on uneven ground.
With the LH 33 tilt connector the tilt angle can be adjusted from 0° (perpendicular) to 15°.
For maximum tilt-angle adjustability, the LH 26 fork mounting bracket can be attached to
the PAS 400 with 2 x M8 knurled thumbscrews and then combined with an LH 28 tripod
stand adapter to mount it to a tripod. The speaker can then be rotated and tilted to the
optimum angle for the listeners.
1.4.2 Wall or Ceiling Mounting
For hang-mounting, the top of the enclosure has two M8 threaded attachment points (115
mm spacing) for attaching an LH 29 TV spigot for mounting to cross beams or light stands.
For wall mounting with maximum adjustability, the speaker can be attached, via the 35 mm
mounting flange on the bottom, to an LH 120 wall mount bracket. The speaker can then be
rotated and tilted (10 - 25°) to the optimum angle for the listeners.
1.4.3 Positioning & Alignment
Position the loudspeakers so that they:
ywill not be directly aimed at any open microphones
ywill be as far away from the microphones as possible - especially important with sensitive
or long-distance microphones
ywill be at the front of the stage or more forward than the microphones (in relation to the
listeners)
1.5 Power / Mains Connection (1)
The freePORT PAS 400 is available in the following AC mains voltage configurations:
y230 Volt AC / 50 Hz
(supplied with a German Schuko mains cable connector)
y120 Volt AC / 60 HZ
(supplied with a USA 3-prong mains cable connector)
y100 Volt AC / 50-60 Hz
(supplied with a USA 3-prong mains cable connector)
Before connecting to the mains power supply:
왘Verify that each PAS 400 system matches the mains voltage at the site!
왘Do not disconnect any part of the ground connection! When powered from an AC mains
supply, the system must only be operated with a proper ground connection!
The (supplied) mains cable connector may not match the AC outlet type in some countries.
Only a qualified electrician should change the AC connector and the proper ground-
connection must be made.
Attention!

8 freePORT PAS 400 Version 060328
1.6 GROUND LIFT Switch (2)
The signal GROUND LIFT switch should be set to the GROUND position. If the PAS 400 hums
when connected to other equipment, setting the switch to the GROUND LIFTED position may
reduce or eliminate the hum.
1.7 Fuses (3) and (4)
Disconnect the PAS 400 from any external power supply (mains or battery) before changing
or inspecting fuses.
Only the following fuse types can be used
1.8 Powering with a 12-16 Volt DC External or Auto Battery (5)
The "EXT BATTTERY 12 - 16 VDC" socket is accessible by removing the sealing cap.
A plug-in connector for this is socket available. Please note the correct polarity (labelled as
"+" and "-" by the socket). Incorrect polarity will not cause damage, but the internal battery
will then power the PAS 400.
1.9 Power Switch (6)
The power switch has three positions:
When the system is switched On (to Position I or Position II), there is an automatic 3-second
delay before it is operational.
When the (optional) built-in wireless receiver is not being used, set the Power Switch to
Position II to conserve battery power and to get the longest run-time per charge.
When switching from Position I to Position II (or visa versa), first switch to Position 0 and wait
5 seconds before switching to the next position, otherwise, the Deep Discharge Cut-Off Circuit
may be activated (if activated, switch to Position 0 and wait 30 seconds before switching to
Position I or II.).
1A Slo-Blo for 230 Volt AC / 50 Hz models
2A Slo-Blo for 120 Volt AC / 60 Hz
2A Slo-Blo for 100 Volt AC / 50-60 Hz
6.3A Slo-Blo for the rechargeable battery
Position 0 Loudspeaker system is Off
Battery will charge (if connected
to a power supply)
Position I Loudspeaker system is On
Wireless receiver is On
Battery will charge (if connected
to a power supply)
Position II Loudspeaker system is On
Wireless receiver is Off
Battery will charge (if connected
to a power supply)

freePORT PAS 400 Version 060328 9
If AC mains power is interrupted, the system will automatically switch over to battery power.
Remote On / Off switching of the AC mains power will automatically switch the system over
to battery power.
1.10 Power On Indicator (7)
The "Power On" indicator remains illuminated (green) while the loudspeaker system is On.
The Power On indicator also serves as a "Remaining Charge" indicator when the rechargeable
battery is powering the system:
ySlow blinking LED
approximately 25% of battery charge remains
yFast blinking LED
less than 25% of battery charge remains
1.11 Battery Charging Circuit & Loading Indicator (8)
Note:
Before the system is used for the first time or if it has not been connected to AC mains
power for several months, connect it to AC mains power supply (with the Power On switch
in Position 0) and charge the battery for at least 6 hours.
The Loading indicator remains illuminated (red) while the battery is charging. After the
battery is fully charged, the Loading indicator will be off and the built-in charging circuit will
automatically switch to trickle charging. The charging circuit is completely separate from the
amplifier power supply and will charge the battery from any state of charge, at a smooth,
controlled rate up to a full charge. The power amplifier (when connected to AC mains) can
deliver full power, even while a completely discharged battery is being charged.
Charging times (with the Power On switch in Position 0), for a completely discharged battery,
are approximately as follows:
y6 hours
to 90% capacity
y10 hours
to 100% capacity
For a partially discharged battery, the charging time will be shorter.
The internal battery will not recharge when the loudspeaker is being powered by an external
battery source. The built-in charger will not recharge external batteries connected to the EXT
BATTERY socket.
For fastest battery recharging, set the Power On switch to Position 0 and connect the AC
mains cable to an AC mains power supply.
The loudspeaker system, even with a fully charged battery, can be connected (long term) to
AC mains power without damage to the battery. The system does not need to be continually
connected to AC mains power when stored (see table below for remaining capacity) and may
be stored for several months, although not recommended, without recharging. Battery
lifetime is estimated to be approximately 3 years or approximately 5000 recharge cycles,
with no memory effect.
Battery Self-Discharge During Storage, at 77 °F (25 °C):
Time since last full recharge Remaining Capacity
3 months 91%
6 months 82%
12 months 64%

10 freePORT PAS 400 Version 060328
1.12 Deep Discharge Cut-Off Circuit
The Deep Discharge Cut-Off Circuit is an intelligent circuit that will automatically switch off
the battery supply to the amplifier, before the battery voltage goes below the
manufacturer's recommended discharge cut-off voltage.
왘If this occurs, switch the loudspeaker system Off (to Position 0) and immediately recharge
the battery.
1.13 Connecting Signal Sources
All inputs have at least 10 dB of headroom.
1.13.1 Input 1 and Input 2 pin connectors
Input 1 and Input 2 are combo jacks that accept balanced or unbalanced signals from either
XLR male connectors or ¼ in. phone plugs.
Input 1 and Input 2:
Balanced input signals - cable configurations:
Cables for balanced signals that will be connected to Input 1 or Input 2 should be configured
as follows:
XLR male connector:
¼ in. TRS (stereo) phone plug:
Unbalanced input signals - cable configurations:
For unbalanced input signals, the simplest solution is to use a ¼ in. mono (TS) phone plug.
Connect the "+ signal" to the Tip and the Ground (shield) to the Sleeve.
Connectors for unbalanced signals should be configured as follows (refer to previous
Warning):
PUSH
12
3
Pin 1 Ground
Pin 2 + signal
Pin 3 -- signal
21
3
Pin 1 Ground (shield)
Pin 2 + signal
Pin 3 -- signal
Ring
Tip Sleeve
Tip + signal
Ring -- signal
Sleeve Ground (shield)
Connect unbalanced microphones or any other equipment that has an unbalanced
connector (e.g. ¼ in. mono phone plug) to INPUT 2 (unless INPUT 1 will ONLY be used in the
LINE position). INPUT 1 has phantom power in the MIC or AUX positions and this may cause
permanent damage to an unbalanced microphone when an unbalanced connector is used.
Warning!
XLR male connector ¼ in. TRS (stereo) phone plug ¼ in. TS (mono) phone plug
Pin 1 Ground
(shield)
Tip + signal Tip + signal
Pin 2 + signal Ring shorted to Sleeve
Pin 3 shorted to
Pin 1
Sleeve Ground (shield) Sleeve Ground (shield)

freePORT PAS 400 Version 060328 11
1.13.2 INPUT 1 (9)
INPUT 1 is an electrically balanced XLR / TRS combo jack (9). The input level sensitivity can
be set with the 3-position selector switch (10) to:
12 V phantom power is supplied to INPUT 1 when the input selector switch is in the MIC or
AUX position. Condenser microphones (requiring phantom power) should be connected to
INPUT 1.
The output volume can be adjusted using the VOLUME 1 control (11).
1.13.3 INPUT 2 (12)
INPUT 2 is a transformer balanced XLR / TRS combo jack (12). The input level sensitivity can
be set with the 3-position selector switch (13) to::
The MIC (-65 dBu) position is ideal for distant-miking set-ups with dynamic mics (see section
2.1). The LINE (+6 dBu) position is ideal for balanced signals from pro audio sources or feed-
signals from an OB Van.
The output volume can be adjusted using the VOLUME 2 control (14).
1.13.4 INPUT 3 (15)
INPUT 3 is a pair of unbalanced RCA jacks (15). Line-level (0 dBu sensitivity) stereo signals
(e.g. from a CD player, Mini Disc player, cassette player, etc.) can be connected and the left
and right inputs will be summed to produce a mono signal.
The output volume can be adjusted using the VOLUME 3 control (16).
1.13.5 RF Receiver Input (17)
RF receivers (optional) for wireless microphones can be user-installed in the side
compartment of the freePORT PAS 400. Please refer to the separate instructions for
installation and connection of the receivers to the PAS 400. The PAS 400 can accommodate
the following combinations of RF receivers:
yUp to 4 Sennheiser Evolution Bodypacks, or
y1 Sennheiser Evolution Diversity + 2 Sennheiser Evolution Bodypacks
The individual volume controls for the Evolution Bodypacks will be accessible after they are
installed, however, the volume level for the Evolution Diversity receiver has to be pre-
adjusted before it is installed.
The overall output volume can be adjusted using the RF-RECEIVER VOLUME control (17),
which functions as a master volume control for all of the RF receivers that are installed.
Line ( 0 dBu)
AUX (-25 dBu)
MIC (-45 dBu)
Connect unbalanced microphones or any other equipment that has an unbalanced
connector (e.g. ¼ in. mono phone plug) to INPUT 2 (unless INPUT 1 will ONLY be used in the
LINE position). INPUT 1 has phantom power in the MIC or AUX positions and this may cause
permanent damage to an unbalanced microphone when an unbalanced connector is used.
Warning!
Line ( +6dBu)
AUX (-25 dBu)
MIC (-65 dBu)

12 freePORT PAS 400 Version 060328
1.14 Audio and DC Outputs
1.14.1 LINE OUT (18)
LINE OUT is an electrically balanced XLR male connector (18) with the same pin configuration
as shown in section 1.13.2. This line level output (+6 dBu nominal / +17 dBu peak) is a mix
of all input signals connected to the PAS 400 and may be used as the input signal to other
systems, (e.g. a mixing desk, another active loudspeaker).
1.14.2 REC OUT (19)
REC OUT is a pair of unbalanced RCA jacks (19). Each output has the same line-level (-6 dBu)
mono signal, which is a mix of all input signals connected to the PAS 400, and may be used
as the input signals to a recorder (e.g. Mini Disk, Cassette).
1.14.3 MONITOR SPEAKER (20)
MONITOR SPEAKER is a 1/4 in. phone jack with a 15-Watt RMS (at 4 Ω) output for powering
additional passive loudspeakers.
This output level can be adjusted using the VOLUME Monitor Speaker (21) control.
1.14.4 DC OUT (22)
The PAS 400 has two DC Outputs (22) for powering portable CD, MD or cassette players /
recorders, RF receivers, etc., that can be powered by an external DC power supply. The 12 V
output is factory-set and the 6 V output is user-adjustable (internally) for either 3, 6 or 9
VDC. The DC outputs are short-circuit-proof, regulated and utilize standard barrel connectors.
Note:
When the rechargeable battery is powering the PAS 400 and external units are also being
powered by the DC outputs, the run-time will be reduced.
1.15 PDD 63 Delay Unit
The PDD63 Delay unit (optional) can be user-installed in the side compartment of the
freePORT PAS 400. Please refer to the separate instructions for installation and connection
of the PDD63 to the PAS 400.
In large rooms or rooms with strong echo characteristics, a delay may be useful - even at
distances less than 30 feet (9 meters). Some examples are as follows:
If the PAS 400 is used as a side-fill and is 30 feet (9 meters) or more from the FOH
loudspeakers, the signal to the side-fill loudspeakers should be delayed so that the sound
from all loudspeakers reaches the audience at the same time.
If the PAS 400 is 30 feet (9 meters) or more from the microphone users, the loudspeaker
should be delayed so that the sound from the loudspeakers and the un-amplified voices of
the microphone users reach the audience at the same time.
The PDD63 delay unit allows a delay to be set for the loudspeakers and the MONITOR
SPEAKER output. The delay "time" is set as a distance in meters (1 ms = 0.343 m = 1.125 ft.)
using the two easily accessible controls on the PDD63.
Correct polarity and voltage are both important! The PAS 400 barrel connectors are
configured for the standard polarity (inner sleeve = +DC and outer sleeve = --DC) used in
most portable players / recorders. First check the manufacturer's information, regarding
polarity and DC voltage for external power supplies, before any units are connected to the
PAS 400.
Warning!

freePORT PAS 400 Version 060328 13
2 Operation
Note!
To prevent audible clicks or thumps, turn the VOLUME control (11) or (14) for INPUT 1 or
2 all the way down before:
yconnecting or disconnecting microphones or signal sources
ychanging the input level sensitivity with the selector switch (10) or (13).
2.1 Dynamic Microphones - Distant-Miking Set-up
If the distance from the person speaking into the mic is 8 to 20 inches (e.g. when speaking
at a conference table, or making a speech from a podium), turn down VOLUME 2, connect the
mic to INPUT 2 and select the MIC (-65 dBu) sensitivity. Then adjust VOLUME 2 to the desired
level.
2.2 Dynamic Microphones - Close-Miking Set-up
If the mic will be used at close distances, i.e., less than 4 inches (e.g. singing, speaking close
to the mic because of high background noise), turn down VOLUME 1, connect the mic to
INPUT 1 and select the MIC (-45 dBu) sensitivity. Then adjust VOLUME 1 to the desired level.
Note!
INPUT 1 has phantom power (in the MIC and AUX positions) for powering condenser mics.
2.3 Electret-Condenser Microphones - Distant-Miking Set-up
If the distance from the person speaking into the mic is 8 to 20 inches (e.g. when speaking
at a conference table, or making a speech from a podium), turn down VOLUME 1, connect the
mic to INPUT 1 and select the MIC (-45 dBu) sensitivity. Then adjust VOLUME 1 to the desired
level.
2.4 Electret-Condenser Microphones - Close-Miking Set-up
If the mic will be used at close distances, i.e., less than 4 inches (e.g. singing, speaking close
to the mic because of high background noise), turn down the VOLUME (1 or 2), connect the
mic to the INPUT (1 or 2) and select the AUX (-25 dBu) sensitivity. Then adjust the VOLUME
(1 or 2) to the desired level.
2.5 Mixing Console or Line-Level Inputs
Line level inputs can be connected to INPUT 1 (electrically balanced with 0 dBu sensitivity) or
INPUT 2 (transformer balanced with +6 dBu sensitivity). These inputs have the same audio
quality, but INPUT 2 may be more immune to hum or noise because it is transformer balanced
and completely isolated form the mains ground.
2.6 Recording from the PAS 400
An analog recorder (e.g. Mini Disc, cassette, etc.) can be connected to the REC OUT outputs
and a 2-channel mono recording of all inputs connected to the PAS 400 can be made. If the
outputs of the recorder are also connected to INPUT 3 (e.g. for playback), then turn down
VOLUME 3 before making any connections. Turn the volume level up slowly to prevent
feedback (many recorders produce an output signal, for monitoring, while they are recording

14 freePORT PAS 400 Version 060328
- which may cause loop feedback when the recorders inputs and outputs are connected to
the same unit).
2.7 TONE Controls
The PAS 400 features three tone controls for separate adjustment of the Low (Bass), Mid
(Middle) and High (Treble) frequencies.
2.7.1 Low Control
The Low frequency control can be used to improve the lower tones of speech, vocals or music.
For best speech quality, the "SP" position is recommended as the initial setting - then adjust
as necessary based on the acoustic conditions (indoors/outdoors, small/large room,
reflective/non-reflective walls, few/many people, etc). In small, very reflective/resonant
rooms, the Low control may have to be adjusted even lower than the "SP" position. For music
the Low control should initially be set to the "0" position and then adjusted according to the
room conditions and personal taste.
2.7.2 Mid Control
The Mid control is centered at a frequency of 1800 Hz and will have a pronounced effect on
speech and vocal presence. It is also the frequency range where most feedback problems
occur, so careful adjustment is recommended. For most situations, the "0" position is
suggested as the initial setting, then adjust according to room conditions and desired
presence level.
2.7.3 High Control
The High control can influence the clarity and intelligibility of speech and vocals but can also
add sibilance or feedback if set too high. It is important to be directly in-line with the front
of the loudspeaker cabinet when the High control is adjusted, so that the treble level or
sibilance can be clearly heard. For most situations and with most microphones, it may be
better to initially set the High control slightly below the "0" position, then adjust the Volume
control to the maximum level that will be used - then make final (fine) adjustments with the
High control.
2.8 Rechargeable Battery -Description
The internal rechargeable battery is a high quality, maintenance-free, lead battery. Unlike a
car battery, it is leak-proof and can be oriented in any position without leaking. The main
advantages of these batteries is their very high charge-capacity-to-volume ratio, very low
tendency to self-discharge and low susceptibility to memory-effect (they can be recharged
at any time / do not have to be completely discharged before they can be recharged).
Battery recharging is recommended after each prolonged use of the PAS400 with battery
power.
See section 1.11 for additional information regarding battery charging, storage and
estimated battery life.
2.9 Battery Replacement and Disposal
For safety and best performance, the internal rechargeable battery should only be replaced
with a new unit of the manufacturer's recommended equivalent type. Defective batteries
must be handled and disposed of as hazardous waste. Please contact the authorized K + H
distributor or dealer before removing or disposing the internal battery.

freePORT PAS 400 Version 060328 15
3 Troubleshooting
Problem: Possible Cause: Possible Solutions:
No sound POWER switch in wrong position for Mic
receivers
Set POWER switch (6) to Position I
VOLUME controls set too low Slowly turn up VOLUME controls (11, 14, 16
or 17)
Internal battery is discharged Connect to AC mains power and recharge
battery
Sound is Distorted Incorrect input level sensitivity for INPUT 1 or 2 Turn down VOLUME (11 or 14) and change
the input sensitivity (10 or 13)
Microphone is defective or battery in wireless
mic is low
Replace mic or battery
PAS 400 switches Off Battery is discharged Connect to AC mains power and recharge
battery
Overheating from operation in a very warm
environment / direct sun - especially when
using full power or recharging battery
Reduce Volume levels (11, 14, 16 or 17),
protect from direct sun and provide air
cooling - or switch Off and wait until the unit
has cooled down
Feedback Microphone is an omnidirectional type Use a cardioid or supercardioid mic
Loudspeaker positioning in relation to
microphones
Reposition loudspeakers so that they will
not be aimed at any microphones
Mic volume levels are too high Turn down VOLUME (11 or 14)
Recorder is connected both to INPUT 3 and to
REC OUT
Turn VOLUME (3) down completely when
recording
TONE control(s) set too high Turn down TONE controls (25, 24 or 23)
Loud crackle or popping noise Defective microphone cable Replace mic cable
Defective connector(s) on microphone cable Wiggle connectors to determine which one is
defective - replace mic cable or install new
connector
Defective microphone Replace microphone

16 freePORT PAS 400 Version 060328
4 Performance Curves
The excellent acoustic performance of the freePORT PAS 400 can not only be heard, but also
confirmed through close examination of the measurement results. The following
performance curves are only a sample of these measurements.
The frequency response and the tone controls were especially tailored for the applications
that are typical for small PA loudspeaker systems:
The outstanding horizontal directivity is demonstrated by the following diagram:
The well-controlled vertical directivity is shown in the following diagram:
Free-Field Frequency Response Tone Control Equalization (EQ) Curves
Horizontal directivity - freePORT PAS 400
Vertical directivity - freePORT PAS 400

freePORT PAS 400 Version 060328 17
5 Product Specifications
Principal Active 2-way loudspeaker system with 2 x 6.5 in. woofers, 1 in. horn-loaded tweeter, internal
electronic crossover and separate power amplifiers for each loudspeaker driver. The system
can be powered by either AC mains, internal rechargeable battery (recharging system is
built-in) or from an external 12 VDC source.
The system includes ya built-in mixer-preamplifier with 4 input channels for connecting balanced/unbalanced,
line level/mic level and wireless/cabled signal sources.
ythree outputs: Line (line level balanced), Record (line level unbalanced) and Monitor (15 W
@4 Ω)
Frequency Response
80 Hz - 15 kHz ±3 dB
Total Harmonic Distortion
<1% THD above 150 Hz at 100 dBspl / 1 m
Maximum Sound Pressure Level
105 dBspl in full-space, above 150 Hz at 3% THD
113 dBspl for speech with bass control set at minimum level
Loudspeakers
Woofer
2 x 6.5 in.
Tweeter
1 in. horn loaded
Cabinet
Material
Birch plywood
Finish
Charcoal grey (RAL 7021) textured,
or optional speckled
Grille
Acoustic foam, removable
Electronics:
Power Output
Woofer Amplifier
50 Watts cont / 65 Watts max at < 0.5% THD
Tweeter Amplifier
15 Watts cont / 20 Watts max at < 0.5% THD
Monitor Amplifier
15 Watts cont / 20 Watts max at < 0.5% THD
Active Crossover
Crossover frequency / slope
3 kHz at 24 dB/octave
Tone Controls
High (Treble)
± 12 dB at 10 kHz
Mid (Midrange)
± 4 dB at 1.8 kHz
Low (Bass)
± 8 dB at 50 Hz
Sub-sonic filter (all inputs)
- 3 dB at 50 Hz, -6 dB/octave
Protection Circuits
Woofer
Signal clipping detection limiter
Tweeter
Distortion detection / thermal limiter
INPUTS
INPUT
1
Electrically balanced, XLR / TRS combo jack
Selectable level: MIC (-45 dBu), AUX (-25 dBu), LINE (0 dBu)
12 V phantom power in MIC and AUX positions
12 dB headroom
INPUT 2
Transformer balanced, XLR / TRS combo jack
Selectable level: MIC (-65 dBu), AUX (-25 dBu), LINE (+6 dBu)

18 freePORT PAS 400 Version 060328
10 dB / 12 dB / 12 dB headroom
INPUT 3
Unbalanced, 2 x RCA jacks (summed to mono)
-6 dBu
RF-RECEIVER INPUT Transformer balanced
-26 dBu
Master volume for optional RF receivers (up to 4 Sennheiser
Evolution Bodypacks, or 1 Sennheiser Evolution Diversity + 2
Sennheiser Evolution Bodypacks may be built in)
Outputs
LINE OUT Electrically balanced (transformer balanced optional),
XLR male connector
+6 dBu
REC OUT Unbalanced, 2 x RCA jacks (dual mono)
-6 dBu
MONITOR SPEAKER 15 / 20 Watts rms continuous / max into 4 Ω,
¼ in. phone jack
Adjustable output
4 Ωminimum load impedance, short-circuit protected
Indicators
Power On
Red LED
Battery Charge Indicator
Green LED
Power Supplies
AC mains
230 Volt AC / 50 Hz
120 Volt AC / 60 Hz
100 Volt AC / 50-60 Hz
Internal Battery
12 VDC (rechargeable from built-in charger)
External Battery
12 - 16 VDC
Power Consumption
AC mains
160 VA max
External DC
6 Amps / 14 VDC
DC Out for External Equipment
12 VDC
0.5 A, short-circuit protected, standard barrel connector
3, 6 or 9 VDC (user selectable)
0.5 A, short-circuit protected, standard barrel connector
Protection Class
Class 1, grounded chassis
Rechargeable Battery
Type
Leak-proof, lead, maintenance free
Rating
12 V / 7.2 Ah
Battery Charging Circuit
Description
From AC mains supply only: Constant current until fully
charged then automatically switches to constant voltage
trickle charge
Charging Time
For completely discharged battery:
10 hours to 100% capacity
6 hours to 90% capacity
Run Time in Battery Mode
With no external units connected to DC Out and no built-in RF
receivers or Delay units operating:
13 hours for low-level music

freePORT PAS 400 Version 060328 19
6.5 hours for speech
5.5 hours for loud music
Ambient Conditions
Operating Temperature
+14 to +104 °F (-10 to +40 °C)
Storage Temperature
+5 to +104 °F (-15 to +40 °C)
Humidity
Not water resistant - do not expose to rain or excessive
moisture. Optional LRH Rain Hood should be used but avoid
exposure to high humidity or rain
Mounting: Attachment Points
Bottom
standard 35 mm pole-mount flange
Sides
2 x M8 threaded sockets
Top
2 x M8 threaded sockets
Dimensions
W x H x D
8.6 x 19.3 x 10.2 in. (218 x 490 x 260 mm)
Weight
W/o RF-Receivers or Delay unit
34.1 lbs.(15.5 kg)
Accessories
RF Receiver Mounting kits
- for 1 to 4 Sennheiser Evolution Bodypacks
- for 1 Sennheiser Evolution Diversity
+ 2 Evolution Bodypacks
Digital Delay Mounting kit
- for 1 PDD 63 Delay Unit
Mounting Brackets
LH 26
Tripod Stand Adapter
LH 28
Tilt Connector / Tilt Adapter
LH 33 (0 - 15°) / LH 36 (o - 18°)
TV Spigot
LH 29
Eyebolt
C15
Spiked pole
LST 60
Telescope pole for tripod stand
SR 21
Rain Hood
LRH 100
Padded Carrying Case
LTR 100
Trolley
LRR 100

20 freePORT PAS 400 Version 060328
6 Warranty Information
All K + H products undergo an extensive procedure of quality control testing before leaving
the factory. Before semiconductors are mounted on the circuit board, they are subject to
rigorous tests. Every single unit is guaranteed to match its technical specifications within
strict predetermined tolerances.
Please store the original carton in a safe, dry place. If warranty service is ever needed, put the
unit into its original packing material and carton, together with a detailed description of the
problem, and ship it (freight prepaid) to the K + H distributor or directly to:
K + H Vertriebs- und Entwicklungsgesellschaft mbH
Customer Service
Auf dem Kessellande 4a
30900 Wedemark
Germany
K + H warrants, that the product is free from any defects in both material and manufacturing
and that it meets the specifications. A warranty issue can only be acknowledged when the
complaint is received by the authorized K + H distributor or by K + H in writing within 8 days
after delivery or detection of the fault. Not covered under this warranty are damages due to
improper installation, operation, maintenance, handling, wear and tear, packaging or
shipment.
The limitation period for warranty claims is described in the terms and conditions for K + H
GmbH. It is K + H's option to repair, replace or to withdraw from the contract. In the event
warranty service is required, presentation of a warranty card will not be necessary. Proof of
purchase date can be made by filing copies of appropriate documents (invoice, delivery
note).