Peavey sp 4g Manual Do Utilizador
Net Weight:
135 lbs. (61.4 kg)
FEATURES
•
Two 1505-8 KADT Black Widow
®
woofers
•
22XT
™
compression driver
•
Sound Guard
™
high frequency
protection circuit
•
Trapezoidal enclosure design
•
Built-in pocket casters for easy
movement
movement
DESCRIPTION
The redesign of the ever popular SP
™
4
has resulted in the SP
™
4G loudspeaker
system. It is a pseudo three-way speaker
system comprised of a 15" Scorpion
system comprised of a 15" Scorpion
®
Plus woofer with a Kevlar
®
impregnated
cone and a 22XT
™
compression driver
coupled to a CH
®
941 constant directivity
horn.
This unit can be driven in full-range or
bi-amp mode simply by plugging into
the desired jack on the input plate. The
SP
bi-amp mode simply by plugging into
the desired jack on the input plate. The
SP
™
4G has a trapezoidal shaped box,
rather than a rectangular shaped box,
that allows arrays to be constructed
much more easily. This shape also
greatly reduces the build-up of standing
waves on the inside of the enclosure.
This ensures a minimum of mid-bass
and mid-range coloration of the
reproduced sound due to the cabinet.
The SP
that allows arrays to be constructed
much more easily. This shape also
greatly reduces the build-up of standing
waves on the inside of the enclosure.
This ensures a minimum of mid-bass
and mid-range coloration of the
reproduced sound due to the cabinet.
The SP
™
4G is constructed of 3/4"
plywood and is covered with Peavey’s
durable black carpet. Polymer corners
are also a part of the unit to provide
added protection to the enclosure. A
powder-coated, expanded metal grille
covers the lower part of the front of the
enclosure to protect the low frequency
driver from unforeseen accidents.
durable black carpet. Polymer corners
are also a part of the unit to provide
added protection to the enclosure. A
powder-coated, expanded metal grille
covers the lower part of the front of the
enclosure to protect the low frequency
driver from unforeseen accidents.
Sound Guard
™
, Peavey’s proprietary
circuit for high frequency driver
protection, has been included as an
integral part of the crossover for the
SP
protection, has been included as an
integral part of the crossover for the
SP
™
4G. The input signal is routed
through the Sound Guard
™
circuit in
both full-range and bi-amp modes of
operation. When the high frequency
drive level to the SP
operation. When the high frequency
drive level to the SP
™
4G exceeds a
predetermined threshold the Sound
Guard
Guard
™
circuit in engaged. This subtly
decreases the signal level going to the
22XT
22XT
™
so that it will not be damaged
due to long-term overpowering. Short
duration transients will not be
attenuated by Sound Guard
duration transients will not be
attenuated by Sound Guard
™
and have
the possibility to damage the 22XT
™
.
The Sound Guard
™
circuit is a dynamic
circuit that will attenuate the signal
more in relation to how large the signal
is, very similar to a compressor. This is
accomplished through the use of a
specially selected, dynamically resistive
more in relation to how large the signal
is, very similar to a compressor. This is
accomplished through the use of a
specially selected, dynamically resistive
20
50
100
200
500
1k
2k
5k
10k
20k
Frequency (Hz)
30
40
60
80
100
140
180
300
360
Beamw
id
th(
Degrees
)
Beamwidth
Vertical
Horizontal
Figure 3
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)
Figure 1
20
50
100
200
500
1k
2k
5k
10k
20k
Frequency (Hz)
1
10
100
Q & Directivity Index
Q
Figure 4
20
10
Di
0
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