Alpine SPX-Z18T

System Type 1

–10

–20

–30

–40

–50

20Hz30Hz 100Hz 1.0KHz 3.0KHz 10KHz 30KHz300Hz

Type-1A: Pathlength to the listening posi-

tion is considered to be basically equal in

this case (ideally 2-3m away), with relative

on-axis positioning of all drivers. Phase link-

age is accomplished with a low Q 2nd Order

high-pass filter on the tweeter, 1st Order low-

pass and 4th Order high-pass on the

midrange, and a semi-4th Order low-pass on

the woofer. This results in acoustic crosso-

ver points of 3.8kHz and 700Hz respectively.

Network Jumper Setting

HP-2

HP-1

LP-2

LP-1

+2dB

MID HP/LP

–3dB

–1.5dB

0dB/0

+1.5dB/15

+4dB/30

HP-1

HP-2

HP-3

BYPASS

LP-1

LP-2

LP-3

LP-BYPASS

HP-BYPASS

TW LEVEL

WF LP MID HP/LP

WF/MID

SIGNAL LINK

SPX–Z18T

TW HP

MID/TW

SIGNAL LINK

—

Notes:

•Highlighted tweeter level jumpers are the recommended settings for each configura-

tion, but user adjustment may be desirable.

•Transfer function simulations only illustrate the effect of the filter upon the input sig-

nal, and therefore do not represent the actual frequency response of the system.

•If separate channels of amplification are used (bi-wire or tri-wire mode), the appro-

priate signal link jumpers must be removed.