Page 4
NOTES ON SUBWOOFER WIRING
o
VT4880: users may choose to wire both 2258 (18”) components in parallel to one (1) channel of
a an I-T amp for (4) ohms load. In this case each amplifier channel drives one VT4880. If two
VT4880 are wired in parallel, the load is two ohms. Three 4880s can not wired in parallel in this
situation.
o
VT4881: users may choose to wire both coils in a single 2256G component in parallel to one (1)
channel of an I-T amp for (4) ohms load. In this case each amplifier channel drives one
VT4881. If two VT4881 are wired in parallel, the load is two ohms. Three 4881s can not wired
in parallel in this situation.
USERS MUST NOT WIRE THE VOICE COILS ON A 2256G (VT4881) OUT OF POLARITY TO
EACH OTHER.
NL8: PIN 1 + = RED CONNECTOR A & BLACK CONNECTOR A
NL8: PIN 2 + = RED CONNECTOR B & BLACK CONNECTOR B
STANDARD AMPLIFICATION RACK
For those users looking to minimize amplifier rack configurations, one amplifier rack with
(1) I-T4000 and (3) I-T6000 and 2 NL8 output circuits can power up to:
o 4 to 6 VT4889 (2 or 3 boxes per circuits AMPS: HF, MF, LF1, LF2)
OR
o 4 to 6 VT4888 (2 or 3 boxes per circuits AMPS: HF, MF, LF1, LF2)
OR
o 8 VT4887 & 4 VT4881
(4 VT4887 & 2 VT4881 per circuit AMPS: MF/HF, LF, VLF1, VLF2)
This rack would use the same input signal path from the digital controller of choice. Users would only
need to recall the appropriate DSP file on the unit.
o VT4889 or
VT4888
DSP outputs: LO, MID, HIGH (stereo)
o VT4887 &
VT4881
DSP outputs: SUB, LO, MID/HIGH (stereo)
