Hope it's not a 4 conductor cable. Those are made for bridge mode and will damage your gear. It's in the manual.
NL4 connectors have 4 pins but may have either a 2 conductor wire attached to -1/+1 or a 4 conductor wire, the latter is for bridge mode on many amps.
There are 2 wires to any speaker.
Any 2 way cab has + and - to the tweeter/horn and a + and - to the woofer. Passive crossover in cab receives power from input jack +\-
Crossover circuit splits it and has HF +\- to HF driver, LF +\- to woofer.
Combo amp prob has xover in the chassis hence 2 HF wires/2 LF.
But the power section is feeding +/- to the crossover circuit.
From line 6 manual:
Using Neutrik Speakon Output Connections
The LD400 Pro, HD400 & HD750 all feature Neutrik Speakon NL4 series high current twist-lock speaker output connections. These are used instead of standard 1/4-inch unbalanced speaker jacks to provide superior and safe coupling characteristics with professional grade bass guitar cabinets like the Line 6 LowDown 410 cabinet.
Pins 1+ and 1- are used so that a standard two conductor Speakon-to-Speakon cable can be used, or a two conductor Speakon-to-1/4-inch adapter.
Warning! If a Speakon-to-1/4-inch adaptor must be used, we recommend that the power amp be OFF when plugging the amplifier to a standard 1/4-inch cabinet input jack to prevent any risk of shock.
Warning! Do not use a Speakon Cable labeled “BRIDGE MODE” with the HD400 or HD750. This can cause damage to the amp.
MegaBass head, SWR 210, Trace 115, Ibanez RB999, 27" Imac I7, Onyx 1640I, Motu Ultralite
Last edited by uhdinator : 03-19-2013 at 03:31 PM.