Alpine SPX-Z18T

English

Type-3B: Despite the fact that the midrange

and tweeter are mounted in the same plane

and in close proximity, their orientation re-

sults in the acoustic center of the midrange

being farther away. Therefore, the midrange

is considered to be 8.5cm farther than the

tweeter, while the woofer is approximately

25cm closer than the midrange.

For the upper crossover point, a relatively

low Q 3rd order high-pass filter is employed

on the tweeter in conjunction with a semi-1st

order low pass on the mid. Then for the

midrange to woofer transition, a 3rd order

high-pass on the mid integrates well with a

semi-2nd order low-pass on the woofer. To-

gether, these filter combinations result in

acoustic crossover points of 3.8kHz and

600Hz.

Network Jumper Setting

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.

–10

–20

–30

–40

–50

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

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

—