Electro-Voice SX300PI User manual

Description
The Sx300PI and Sx300PIX are continua-
tions of the popular the Sx-series offering
the added value of weather-resistant cabi-
nets.TheElectro-VoiceSx300PIisa300-watt,
12-inch, two-way, high-efficiency, constant-
directivity speaker system for permanent in-
stallation. Through the extensive use of
computer-aided design and modeling,
Electro-Voice engineers have developed
a state-of-the-art professional loudspeaker
system for permanent installation where
weather resistance is needed. The
Sx300PIX is the same as the Sx300PI with
the addition of an AT100 transformer.
The high-frequency section of the Sx300PI
utilizes a molded-in, 65° x 65° constant-di-
rectivity horn. This unique pattern contrib-
utes to high intelligibility. Vocals sound
natural, yet “cut through” in reverberant,
noisy rooms. In addition, the coverage pat-
tern is unusually uniform over its range of
operation. Sound quality off axis is very
consistent, even at 45° off axis (a 90° total
coverage angle), well beyond the rated cov-
erage angle. The horn’s unique, VaripathTM
throat geometry* helps direct driver output
to the corners of the room, points of cover-
age not described in the usual specifications
of horizontal and vertical coverage angles,
and parts of the audience that typically do
not receive the strongest coverage.
One of the many other unique features of the
Sx300PI is the cabinet. Constructed of high-
impact polypropylene structural foam, it pro-
vides a stiff and extremely durable enclosure.
Molded into the cabinet are an integral carry-
ing handle and a stand socket for mounting
on 13/8-inch stands such as the Electro-Voice
100BK.Rubber feet attached to the bottom of
the cabinet and mating sockets molded into
the top provide a means of stacking systems.
The trapezoidal-shaped cabinet in combina-
tion with the uniform, 65° x 65° directivity
characteristics,maketheSx300PIidealfor use
alone or in arrays.
The Sx300PI’s high-frequency horn is driven
by the Electro-Voice DH2010A one-inch-
throat, wide bandwidth, titanium-diaphragm
driver. The DH2010A usesaunique,convex-
driveTimePathTM phasingplugstructure(U.S.
Patent #4,525,604) for smooth and extended
high-frequency performance. The voice coil
is coupled to the diaphragm with EV’s exclu-
sive Resonant DriveTM technology. This in-
creases and smooths the high-frequency re-
sponse and reduces the amount of internal
equalization required for flat frequency re-
sponse. Driver output extends to 25,000 Hz.
Aself-resetting, high-frequencyprotectioncir-
cuit, EV’s PROTM circuit, is included with the
Sx300PI to prevent accidental overdrive and
improve system reliability. If the input power
tothehigh-frequencydriverexceedsthe nomi-
nal rating, the protection circuit is activated
and reduces the power delivered to the driver
by 6 dB. The system will remain in this mode
of operation until the input power is reduced
to a safe level.
The bass section of the Sx300PI is designed
using Thiele-Small parameters for efficient
performance to below 80 Hz. The woofer is a
DL12Sx12-inchunit featuringberylliumcop-
perleadwires,a low-mass, edge-woundvoice
coil and high-temperature materials. The part
of the magnetic structure adjacent to the coil
isinsulated usingtheexclusive EVPROTEFTM
process (U.S. Patent #4,547,632). The sys-
tem combines professional-quality compo-
nents, arranged in a time-coherent vertical ar-
ray, with an unusually durable Thiele-Small-
aligned vented enclosure. The result is clear
and articulate, high-quality sound.
Ring-Mode Decoupling (RMDTM)
The Sx300PI controls both acoustical and
mechanical ring modes to provide dramati-
cally increased intelligibility, using tech-
niques learned from the development of the
Electro-Voice X-array™ concert speakers.
There is much less coloration of the sound
from resonating sources, leaving only the
intended sound to be heard by the audience.
* Patent pending
Sx
00PI
Sx
00PIX
3
3
300-Watt Two-Way
Weather-Resistant
Speaker Systems
• Ring-Mode Decoupling (RMDTM) for
increased intelligibility
• Lightweight Structural-foam enclosure
• Stand mountable and arrayable
• High efficiency (99 dB, 1 W/1 m)
• High power handling (Sx300PI: 300-watts
continuous, 1,200-watts short term)
• Powder-coated, full-face stainless-steel
grill with foam backing
• Four molded-in attachment points (metric
M8 x 1.25) for secure suspension
• 100-watt transformer option (Sx300PIX)
• Available in white

Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
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Frequency Response
The combination of a 12-inch woofer, wide
bandwidth high-frequency driver and an
equalized crossover results in the wide and
smooth overall response shown in Figure 1.
This response was measured at 10 feet, us-
ing a 4-volt input in an anechoic chamber,
and was measured using a swept sine-wave
input. No external equalization was used.
Figure 1 has been averaged and corrected
for 1 watt at 1 meter.
Port Covers
The four ports surrounding the woofer may
be "sealed" in order to add further weather
protection to the system. Optional port cov-
ers may be used in situations where in-
creased weather resistance is needed. This
will aid in the prevention of any moisture
that may protrude through the foam-backed
grill under extreme weather conditions to
accumulate inside the enclosure. The op-
tional port cover "kit" is supplied along with
instructions with each system. However,
once the aid of the port covers are installed,
a difference of frequency response will
change as shown in Figure 2.
Constant-Directivity Speaker System
The crossover frequency and speaker com-
ponentgeometries have been selected so that
the directional characteristics of the woofer
and constant-directivity horn match at the
crossover frequency to create a special sys-
tem type—the constant-directivity system.
Response within the 65°rated coverage
angle is uniform, which means dependable
audience coverage without “hot spots” or
dead zones at certain frequencies. The 65°
dispersion characteristic also helps avoid
early reflections from nearby floor or side-
wall surfaces which could degrade perfor-
mance. The controlled directivity of the
high- and low-frequency transducers also
eliminates response irregularities caused by
diffraction off nearby enclosure edges and,
in combination with an essentially flat on-
axis frequency response, produces a total acous-
tic power output that is uniform with frequency.
Directivity
A unique feature of the Sx300PI is the con-
stant-directivity dispersion provided by the
65°x 65°horn. The polar response of the
system at selected one-third-octave band-
widths is shown in Figure 2. These polar
responses were measured in an anechoic en-
vironment at 10 feet using one-third-octave
pink-noise inputs. The frequencies selected
are fully representative of the polar response
of the system. Beamwidth of the system uti-
lizing the complete one-third-octave polar
data is shown in Figure 4. Rqand directiv-
ity index (Di) are plotted in Figure 5.
Suspending Sx300PI Enclosures
WARNING: Suspending any object is po-
tentially dangerous and should only be at-
tempted by individuals who have a thor-
ough knowledge of the techniques and
regulations of rigging objects overhead.
Electro-Voice strongly recommends that
the Sx300PI be suspended taking into ac-
count all current national, federal, state
and local regulations. It is the responsibil-
ity of the installer to ensure the Sx300PI is
safelyinstalled in accordance with allsuch
regulations. If the Sx300PI is suspended,
Electro-Voice strongly recommends that
thesystem be inspected at leastonce ayear.
If any sign of weakness or damage is de-
tected,remedial action should be taken im-
mediately.
When mounting the Sx300PI in a location
wherea weather-resistant system is required,
a minimum of a five-degree down angle is
recommended. (See Figure 9.) This will aid
in the prevention of any moisture protrud-
ing through the foam-backed grille. A
manual entitled Suspending System 200TM
Loudspeakers is included with every
Sx300PI system. It gives a summary of the
suspension kits available and an idea of how
each kit is used. A brief overview, which
illustrates some approaches for single and
multiple suspension, is given here for the
benefit of the system designer. Please refer
to individual suspension kit engineering data
sheets for full details and safety information.
The first approach is to suspend an indi-
vidual Sx300PI enclosure. The four metric
M8 x 1.25 inserts (see Figure 6) which are
built into the enclosure allow the system to
be suspended using eyebolts (Mb100 Ac-
cessory Kit). Typically it will be necessary
to attach two cables to the top eyebolt and
“pull up” on the rear. The Mb200 bracket
(see Figure 8) encompasses the top and bot-
tom of the enclosure and has additional fea-
tures to make suspending the Sx300PI easier
and more flexible. Electro-Voice recom-
mends the use of the Mb200 in all but the
simplest situations. The Mb200 has supple-
mentary holes to allow the Sx300PI to be
attached to a wall or ceiling and aimed at an
audience.
The Mb200 Installation Kit also allows the
use of OmniMount®Series 100 mounting
hardware by providing three-hole-pattern
groups compatible with these support sys-
tems. When OmniMount®Series 100
mounting hardware is specified, the Mb200
Installation Kit must first be attached to the
speaker enclosure.
The second approach is to suspend multiple
Sx300PI enclosures. The Sx300PI enclosure
is not designed to suspend multiple enclo-
sures from itself. If an “array” is required,
then multiple Mb200’s must be used. Ar-
rays may be constructed vertically by “daisy
chaining” two Mb200’s from each other.
The Mb300 array bracket allows the easy
and secure construction of horizontal arrays,
using Mb200’s to support the enclosure.
Power-Handling Capacity
To our knowledge, Electro-Voice was the
first U.S. manufacturer to develop and pub-
lish a power test closely related to real-life
conditions. First, we use a random-noise in-
put signal because it contains many frequen-
cies simultaneously, just like real voice or
instrument program. Second, our signal con-
tains more energy at extremely high and low
frequencies than typical actual program,
adding an extra measure of reliability. Third,
the test signal includes not only the overall
“longterm average” or “continuous” level—
which our ears interpret as loudness—but
also short-duration peaks which are many
times higher than the average, just like ac-
tual program. The long-term average level
stresses the speaker thermally (heat). The
instantaneouspeaks test mechanical reliabil-
ity (cone and diaphragm excursion). Note
that the sine-wave test signals sometimes
used have a much less demanding peak
value relative to their average level. In ac-
tual use, long-term average levels exist from
several seconds on up, but we apply the
long-term average for several hours, add-
ing another extra measure of reliability.
Specifically, the Sx300PI is designed to
withstand the power test described in the
ANSI/EIA RS-426-A 1980. The EIA test
spectrum is applied for eight hours. To ob-
tainthe spectrum, the output of awhite-noise
generator (white noise is a particular type

Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
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of random noise with equal energy per band-
width in Hz) is fed to a shaping filter with
6-dB-per-octave slopes below 40 Hz and
above 318 Hz. When measured with the
usual constant-percentage bandwidth ana-
lyzer (one-third-octave), this shaping filter
produces a spectrum whose 3-dB-down
points are at 100 Hz and 1,200 Hz with a
3-dB-per-octave slope above 1,200 Hz. This
shaped signal is sent to the power amplifier
with the continuous power set at 300 watts
into the 7.1-ohm EIA equivalent impedance
(46.2 volts true rms). Amplifier clipping sets
instantaneous peaks at 6 dB above the con-
tinuous power, or 1,200-watts peak
(92.5 volts peak). This procedure provides
a rigorous test of both thermal and mechani-
cal failure modes.
Amplifier Power Recommendations
As noted in the Power-Handling Capacity
section above, the Sx300PI has a random-
noise power capacity of 300-watts long term
(1,200-watts peak) (nontransformer) per
ANSI/EIA RS-426-A 1980. The following
guidelines will help relate this number to
an appropriate power amplifier output rat-
ing.
1. To use the Sx300PI to full capacity,
skilled experts in sound system installa-
tion and operation will obtain the best
results if the power amplifier is 2.0 to
4.0 times the long-term average noise-
power rating of the speaker system. For
the Sx300PI this is 600 to 1,200 watts
(nontransformer).
The caution cannot be made strongly
enough, however, that this arrange-
ment is only for experts or for those
who can discipline themselves against
“pushing” the system for ever-higher
sound levels and who can avoid “ac-
cidents”suchas catastrophic feedback
or dropped microphones.
2. A more conservative, “normal” ampli-
fier size, which will produce audible re-
sults nearly equal to those of the “ex-
pert”recommendation, is 1.0 to 1.4 times
the long-term average noise-power rat-
ing of the speaker. For the Sx300PI, this
is 300 to 420 watts (nontransformer).
3. To be very conservative, one can use an
amplifier rated at 0.5 to 0.7 times the
long-term average noise-power rating of
the loudspeaker. For the Sx300PI this
is 150 to 210 watts (nontransformer).
Request P.A. Bible Addition No. Two
(“Power Handling Capacity”) for more
background on these recommendations.
Sx300PI Connections
The Sx300PI is equipped with two Neu-
trik Speakon®NL4MP connectors.
In continued high-power applications,
Electro-Voice recommends the use of the
Speakon connector. The Speakon NL4MP
will mate to a NL4FC Speakon connector,
which is a 4-pin connector. Figure 7 shows
typical wiring configurations using banana
plugs. Cable connections for the Sx300PI
should be made to the 1+ and 1– terminals
only. Cable connections for the Sx300PIX
should be made as shown in Figure 9, de-
pending on the given input voltage and the
desired output wattage. Cables utilizing the
Speakon NL4FC are available from your
local dealer or from the companies listed
below:
Pro Co Sound, Inc.
135 E. Kalamazoo Ave.
Kalamazoo, MI 49007
616/388-9675
Whirlwind Music Distributors, Inc.
P.O. Box 1075
Rochester, NY 14603
716/663-8820
Neutrik USA, Inc.
195-S3 Lehigh Ave.
Lakewood, NJ 08701
908/901-9488
It is recommended that after making the
proper connection with the Speakon connec-
tor to the input on the enclosure, a bead of
sealant should be applied around the con-
nection to assure a watertight seal.
Weather-Resistant Mounting
When mounting the Sx300 PI in a location
where a weather-resistant system is required
a minimum of a five-degree down angle is
recommended. (See figure 9.) This will
help prevent any moisture from wicking
through the foam and mesh-backed grille
and accumulating inside the enclosure un-
der extreme weather conditions.
Architects' and Engineers'
Specifications
The loudspeaker shall consist of a 305-mm
(12-inch) low-frequency transducer in a
trapezoidal-shaped enclosure; a high-fre-
quency compression driver with a pure tita-
nium diaphragm coupled to a 65° x 65°
constant-directivity horn molded into the
front baffle of the enclosure; and a passive
crossover-equalizer network with protection
for the high-frequency driver. The loud-
speaker shall meet the following perfor-
mance criteria: frequency response of
80 to 25,000 Hz, –3 dB; power handling of
300-watts long term and 1,200-watts short
term (nontransformer), with a shaped ran-
dom-noise input per ANSI/EIA RS-426-A
1980; sensitivity of 99 dB SPL at 1 meter
with a 1-watt, 300- to 2,000-Hz pink-noise
input; 6-dB-down horizontal coverage angle
of 65° ±15° in the 2,000- to 20,000-Hz
range; 6-dB-down vertical coverage angle
of 65° ±15° in the 2,000- to 20,000-Hz
range; crossover frequency of 1,500 Hz;
nominal impedance of 8 ohms and minimum
impedance of 6 ohms. Paralleled input and
output connectors shall be present, consist-
ing of Neutrik Speakon®NL4MP connec-
tors. The enclosure shall be constructed of
polypropylene structural foam and fitted
with a full-face, foam-backed, stainless-
steel grille, an integral handle, a stand
socket for mounting on 13/8-inch stands,
rubber feet and mating sockets to facili-
tate stacking. Dimensions shall be 586 mm
(23.1 in.) high x 429 mm (16.9 in.) wide
x 312 mm (12.3 in.) deep. Net weight shall
be 17.7 kg (39 lb)nontransformer; 21.7 kg
(48 lb)transformer. The loudspeaker sys-
tems shall be the Electro-Voice
Sx300PI,Sx300PIX,Sx300PI-W,
Sx300PIX-W.
Uniform Limited Warranty
Electro-Voice products are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a specified period,
as noted in the individual product-line
statement(s) below, or in the individual
product data sheet or owner’s manual, be-
ginning with the date of original purchase.
If such malfunction occurs during the speci-
fied period, the product will be repaired or
replaced (at our option) without charge. The
product will be returned to the customer pre-
paid. Exclusions and Limitations: The
Limited Warranty does not apply to: (a) ex-
terior finish or appearance; (b) certain spe-
cific items described in the individual prod-
uct-line statement(s) below, or in the indi-

Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
4
vidualproduct data sheet or owner’smanual;
(c) malfunction resulting from use or op-
eration of the product other than as speci-
fied in the product data sheet or owner’s
manual; (d) malfunction resulting from mis-
use or abuse of the product; or (e) malfunc-
tion occurring at any time after repairs have
been made to the product by anyone other
than Electro-Voice Service or any of its au-
thorized service representatives. Obtaining
Warranty Service: To obtain warranty ser-
vice,acustomermust deliver theproduct,pre-
paid,toElectro-Voice Service or anyofitsau-
thorized service representatives together with
proof of purchase of the product in the form
of a bill of sale or receipted invoice. A list of
authorizedservicerepresentativesisavailable
fromElectro-Voice Serviceat:1Telex Drive,
Morrilton, AR 72110 (800/685-2606 or at
501/354-0111). Incidental and Conse-
Figure 1 — Sx300PI Frequency
Response (1watt/1 meter, anechoic
environment) (open ports)
quential Damages Excluded: Product re-
pair or replacement and return to the cus-
tomer are the only remedies provided to the
customer. Electro-Voice shall not be liable
for any incidental or consequential damages
including, without limitation, injury to per-
sons or property or loss of use. Some states
do not allow the exclusion or limitation of
incidental or consequential damages so the
above limitation or exclusion may not ap-
ply to you. Other Rights: This warranty
gives you specific legal rights, and you may
also have other rights which vary from state
to state.
Electro-Voice Speakers and Speaker Sys-
temsareguaranteed against malfunction due
to defects in materials or workmanship for
a period of five (5) years from the date of
original purchase. The Limited Warranty
does not apply to burned voice coils or mal-
functions such as cone and/or coil damage
resulting from improperly designed enclo-
sures. Electro-Voice active electronics as-
sociated with the speaker systems are guar-
anteed for three (3) years from the date of
original purchase. Additional details are in-
cluded in the Uniform Limited Warranty
statement.
For warranty repair, service information,
ora listing of the repair facilitiesnearest you,
contact the service repair department at:
800/685-2606 or 501/354-0111.
For technical assistance, contact Techni-
cal Support at 800/392-3497 (ext. 4656)
or 952/736-4656, M-F, 8:00 a.m. to
5:00 p.m., Central Standard time.
Specifications subject to change without no-
tice.
Figure 2 — Sx300PI Frequency
Response (1 watt / 1 meter, anechoic
environment) (closed ports)

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Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
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Figure 3 — Polar Response (anechoic
environment) (open ports)
HORIZONTAL
VERTICAL
5 dB per Division

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Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
6
Figure 6 — Sx300PI/ Sx300PIX Dimensions
Figure 5 — Directivity Response (anechoic
environment) (open ports)
θ
76 mm
(3.0 in.)
586 mm
(23.1 in.)
341 mm
(13.4 in.)
429 mm
(16.9 in.)
190 mm
(7.5 in.)
312 mm
(12.3 in.)
65.0 °
METRIC (M8 x 1.25)
METAL INSERTS
(FOUR PLACES)
190 mm
(7.5 in.)
226 mm
(8.9 in.)
Figure 4 — Beamwidth Response
(anechoic environment) (open ports)
(6 dB)

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Sx300PI and Sx300PIX 300-Watt Two-Way Weather-Resistant Speaker Systems
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Figure 7 — Cable Configurations for Sx300PI and Sx300PIX
Figure 8 — Suspending the Sx300PI Using
Mb200 Installation Kit
Figure 9 — Recommended Mounting of the
Sx300PI and Sx300PIX
1 2 3 4
PIN 1
PIN 2
PIN 3
PIN 4
COMMON COMMON
100W 200W
70W 140W
50W 100W
70.7 VOLT 100 VOLT
CONNECTIONS TO
TRANSFORMER TAPS

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SPEAKERS – Full Range/Install Part Number 534544 — 07/07
12000 Portland Ave. S., Burnsville, MN 55337
952/884-4051 Phone, 952/884-0043 Fax
' Telex Communications, Inc., 2005 • Litho in U.S.A.
_____________________
** Available through OmniMount Systems, Inc. OmniMount®is a
registered trademark of OmniMount Systems, Inc.
Specifications
Versions Available:
Sx300PI—two-way, full-range
speaker system (300 watt)
Sx300PIX—two-way, full-range
speaker system with 100-watt
transformer
Sx300PI-W—two-way, full-range
speaker system (300 watt),white
Sx300PIX-W—two-way, full-range
speaker system with 100-watt
transformer, white
Axial Frequency Response (swept
sine-wave input, 4 volts at 10 feet on
axis, anechoic environment, normal-
ized for 1 watt/1 meter; see Figure 1):
80-25,000 Hz
(Open Port) Low-Frequency 3-dB-
Down Point:
90 Hz
Half-Space Reference Efficiency:
5.9%
Long-Term Average Power-Handling
Capacity per ANSI/EIA RS-426-A
1980 (see Power-Handling Capacity
section):
300 watts (nontransformer)
200 watts - 100-V line (transformer)
100 watts - 70.7-V line (transformer)
Maximum Woofer Acoustic Output:
17.7 watts
Sensitivity (SPL at 1 meter, 1 watt
input, anechoic environment, band-
limited pink-noise signal, 300-2,000 Hz):
99 dB
Dispersion Angle Included by 6-dB-Down
Points on Polar Responses, Indicated
One-Third-Octave Bands of Pink
Noise (see Figure ),
2,000-20,000 Hz, Horizontal:
65° –15°
2,000-20,000 Hz, Vertical:
65°–15°
Directivity Factor Rq(Q), 800-16,000 Hz
Median (see Figure 5):
14.3 (+7.9, –9.3)
Directivity Index Di, 800-16,000 Hz
Median (see Figure 5):
11.1 dB (+2.4 dB, –4.1 dB)
Distortion, 0.1 Full Power Input,
Second Harmonic,
100 Hz: 1.2%
1,000 Hz: 1.4%
10,000 Hz: 10%
Third Harmonic,
100 Hz: 0.1%
1,000 Hz: 1.4%
10,000 Hz: 2.5%
Distortion, 0.01 Full Power Input,
Second Harmonic,
100 Hz: 0.2%
1,000 Hz: 1.1%
10,000 Hz: 1.0%
Third Harmonic,
100 Hz: 0.1%
1,000 Hz: 0.4%
10,000 Hz: 0.2%
Transducer Complement,
High Frequency:
DH2010A driver
Low Frequency:
12-inch EV woofer
Box-Tuning Frequency:
63 Hz
Crossover Frequency:
1,500 Hz
Crossover Slope,
Low Pass:
12 dB per octave
High Pass:
12 dB per octave
Impedance, Sx300PI
Nominal:
8 ohms
Minimum:
6 ohms
Input Connections, Sx300PI:
Paralleled Neutrik Speakon®NL4MP
connectors (allow paralleling of
multiple speakers)
Input Connections, Sx300PIX:
Paralleled Phoenix-Style connectors
(for wattage selection and
paralleling of multiple speakers)
Enclosure Materials and Colors:
Polypropylene structural foam; choice
of black or white
Supplied Accessories:
Suspending Sx100/Sx300 Series
Loudspeakers instruction manual
Optional Accessories:
100BK mounting stand
Mb100 forged eyebolt attachment kit
Mb200 wall/ceiling mounting bracket
Mb300 horizontal array kit
OmniMount®Series 100 mounting
hardware**
VPCSx vinyl case
PDSx padded case
MBS200 Stainless Steel Bracket Kit
Attachment Points:
Four metric inserts (M8 x 1.25) (see
Figure 5 and Suspending Sx300PI
Enclosures section)
Dimensions (see Figure 5),
Height:
586 mm (23.1 in.)
Width:
429 mm (16.9 in.)
Depth:
312 mm (12.3 in.)
Net Weight:
17.7 kg (40 lb) – nontransformer
21.7 kg (49 lb) – transformer
Shipping Weight:
19.1 kg (43 lb) – nontransformer
23.1 kg (52 lb) – transformer
Impedance, Sx300PIX at
Nominal:
50 ohms
at 1 kHz:
111 ohms
Highest Wattage Tap,