I Subwoofer Parallel-connection
The subwoofer AX15W features four input/parallel connectors—two 1/4" phone jacks and two Neutrik NL4MP
connectors. Use either a phone jack or a Neutrik connector to receive input from your sound system/power ampli-
ﬁer. One of the spare connectors can be used to parallel-connect an additional main speaker (keeping in mind the
impedance considerations mentioned below).
I Impedance Considerations
When connecting speakers in parallel be sure to check the rated load impedance of the power ampliﬁer. Most power
ampliﬁers are capable of safely driving speakers with minimum impedance of 8 ohms or 4 ohms. A pair of parallel-
connected 8-ohm speakers have a total impedance of 4 ohms. The AX10/AX12/AX15/AX12M/AX15M are 8-ohm
speakers, and two of these can safely be paralleled on one output. Two or more speakers can be connected in paral-
lel, however, if you are using a power ampliﬁer that can safely drive load impedances of 4 ohms or lower.
96dB SPL (1W , 1m) 97dB SPL (1W, 1m) 98dB SPL (1W, 1m)
385 × 538 × 297
: EIA RS-426
Speciﬁcations and descriptions in this owner's manual are for information purposes only. Yamaha Corp.
reserves the right to change or modify products or speciﬁcations at any time without prior notice. Since speciﬁ-
cations, equipment or options may not be the same in every locale, please check with your Yamaha dealer.
1/4" phone jack × 1, SPEAKON Neutrik NL4MP × 1
405 × 578 × 313
2 way Bass reﬂex type
1" VC, Horn-TW
97dB (1W, 1m)
470 × 668 × 375
578 × 405 × 325
Bass reﬂex type
98dB SPL (1W, 1m)
97dB (1W, 1m)
1/4" phone jack × 2,
NL4MP × 2
668 × 470 × 355
485 × 618 × 505