Peavey 4G Features, Description, Amplitude Response, 1W 1m On-Axis, Impedance, Beamwidth

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

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® 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™ 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™ 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.

Sound Guard™, Peavey’s proprietary circuit for high frequency driver 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™ 4G exceeds a predetermined threshold the Sound

™

		Amplitude Response				(1W 1m On-Axis)
	110
Pa)	100
20	90
(re
dB SPL	80
	70
	60	50	100	200	500	1k	2k	5k	10k	20k
	20
	Figure 1				Frequency (Hz)

					Impedance
	100
	50
	30
Z 20
(	) 10
	5
	3
	2
	1	50	100	200	500	1k	2k	5k	10k	20k
	20
	Figure 2				Frequency (Hz)
	360				Beamwidth
	300
(Degrees)	180
	140
Beamwidth	100
	80
	60	Horizontal
	40	Vertical
	30	50	100	200	500	1k	2k	5k	10k	20k
	20
	Figure 3				Frequency (Hz)

Q & Directivity Index

Guard circuit in engaged. This subtly decreases the signal level going to the 22XT™ so that it will not be damaged due to long-term overpowering. Short 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

100

Q

10

1	50	100	200	500	1k	2k
20
Figure 4				Frequency (Hz)

20

Di

10

0

5k 10k 20k