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Mounting provisions:
This unit is not designed for overhead
suspension. SA-1 stand mount adaptor
built-in, and four large rubber feet on
bottom for floor use.
Dimensions (H x W x D):
Front:
33.38 in. x 21.19 in. x 22.75 in.
848 mm x 538 mm x 578 mm
Rear:
33.38 in. x 13.88 in. x 22.75 in.
848 mm x 352 mm x 578 mm
Net Weight:
100 lbs. (45.5 kg)
Features
• 1,400 W program, 2,800 W peak
• Sound Guard
™
44 tweeter protection
• 15" BWX Black Widow
®
4" VC
woofer
• 44XT
™
4" titanium compression
driver
• Trapezoidal enclosure design
• SA-1 stand adaptor
Description
The latest version of the SP
™
1 has
the new BWX high power Black Widow
woofer incorporated, as well as a very
nice looking cabinet design. The SP 1X is
a two-way speaker system comprised of a
15" Black Widow BWX woofer with a
Kevlar
®
impregnated cone, and a 44XT
compression driver loaded onto a CH
®
7
constant directivity horn.
The SP 1X has a trapezoidal shaped
enclosure, which reduces the build-up of
standing waves inside the enclosure,
which minimizes mid-bass and mid-range
colorations due to the cabinet. It is
constructed of 3/4" void-free plywood and
is covered with a durable black carpet.
The enclosure corners are reinforced with
polymer caps, and a black powder-coated
expanded metal grille covers the lower
half of the system to protect the woofer
from external damage. An SA-1 stand
mount adaptor is built-in for ease of
speaker stand use.
The two-way system is comprised of a
15" Black Widow BWX woofer with a
Kevlar impregnated cone, and a water-
resistant treated cone and dust cap for
superior environmental stability. Capable
of over 500 W of continuous power
handling (AES Std 2-1984), the woofer
can handle a lot of sheer power. The high
frequencies are handled by a 44XT 4"
titanium diaphragm compression driver,
utilizing ferrofluid cooling, coupled to a
CH 7 constant directivity horn. This horn
has a smooth, even response with good
pattern control. The 44XT driver features
the Radialinear Planar Phase Correction
System, under US Patent 6,064,745,
which provides smoother and extended
high frequency response.
Input connection to the system is
made via two 1/4" phone jacks in parallel,
and a 4-pin Neutrik
®
switching jack is
provided for bi-amping flexibility while
maintaining superior signal integrity. The
internal passive crossover features Sound
Guard 44 tweeter protection circuit, an
advanced topology crossover with high
performance components, to provide high
power handling and reliability. Peavey’s
proprietary high-frequency driver
protection circuitry, Sound Guard, provides
long and medium-term driver overload
protection when the system is used full-
range, or when it is bi-amped, without
impairing musical transients or dynamics.
The crossover provides driver roll-off and
protection, as well as driver EQ for the
woofer and horn, the sum total is a clean,
clear and smooth response. High-quality,
reliable crossover components include
polypropylene capacitors, and high current
inductors. The optimal integration of the
crossover with the selected drivers results
in a smooth frequency response from
56 Hz to 19 kHz. A crossover EQ switch is
provided to tailor the response in the mid-
range, providing a nominally flat frequency
response position, and an EQ’d position
that pulls the mids back to help keep
bright rooms from overloading, or to help
achieve a mellower voicing for those
applications that prefer it, such as DJ use.
Despite its compact dimensions for a
15" based enclosure with a 2" throat
compression driver, this system can put
out some very serious sound levels, and
take 1400 Watts program of clean
amplifier power, resulting in precise
coverage with excellent clarity and high
reliability.
Frequency Response
This measurement is useful in
determining how accurately a given unit
reproduces an input signal. The frequency
response of the SP 1X is measured at a
distance of 1-meter using a 1 Watt (into
the nominal impedance) swept-sine input
signal. As shown in figure 1, the selected
drivers in the SP 1X combine to give a
smooth frequency response from 56 Hz
to 19 kHz.
Power Handling
There are many different approaches
to power handling ratings. Peavey rates
this loudspeaker system’s power handling
using a full-range form of the AES
Standard 2-1984. Using audio band 20 Hz
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
60
70
80
90
100
110
dB SPL (re 20 Pa)
Amplitude Response (1W 1m On-Axis)
EQ
Normal
Switch Position
Figure 1
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
1
2
3
5
10
20
30
50
100
Impedance
Z
(
)
Figure 2