Polk Audio GNX104-4 manual Break IT, Optimal Crossover Setting, Inverting Phase

BREAK IT IN.

GNX Subwoofers will achieve even greater performance once they are thoroughly broken-in. To break in your new GNX Subs, play 20 to 30 hours of music at moderate levels.

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AMPLIFIER POWER REQUIREMENTS FOR GNX SUBWOOFERS

Your Subwoofers will work well with a variety of electronic components. As little as 50 watts per channel will deliver adequate listening levels in most cars. If you have a noisy car or intend to play your system at loud listening levels, more power is necessary to achieve the best performance. More power is always better. Consult your Polk Audio dealer for specific recommendations.

OPTIMAL CROSSOVER SETTING

We recommend using an active crossover with a 12 to 18dB per octave low pass filter slope, and setting it to an initial setting of 80 to 90Hz as a good starting point. This is an optimal crossover setting on most vehicles.

INVERTING PHASE

Depending on the placement of your subwoofer enclosure and associated components, it may be necessary to invert the phase of one or another of your system’s connections in order to gain better subwoofer/mid-range blending. Inverting the phase simply means switching the positive connections with the negative connections at the amplifier. If you choose to do this, invert the phase of only one set of speakers (either your mains, or your subs, never both).

SAFE LIMITS OF OPERATION

Your Polk GNX Subwoofers are made with the highest quality materials for years of trouble-free performance. However, damage to loudspeakers can occur when an amplifier, regardless of its wattage, is made to play at higher listening levels than its power can clearly produce (usually beyond the “1 to 2 o’clock” position on the volume control). This results in very high levels of audible distortion, originating in the amplifier, which adds a harsh, gritty sound to the music. Contrary to popular belief, a speaker is more likely to be damaged by trying to get too much volume from a low-powered amp than from a high-powered one. Hear distortion? Turn it down. Contact Polk Customer Service 800-377-7655 (9am–6pm, EST, Monday through Friday).

6 Contact Polk Customer Service: 800-377-7655 polkcs@polkaudio.com