Bedienungsanleitung JL Audio M700 (Seite 8 von 20) (Englisch)

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8 | JL Audio - M700/5 Owner’s Manual

Channel 1 & 2 Filter: 12dB/octave High-Pass

only, with x10 multiplier switch

“Off”: Defeats the filter completely, allowing

the full range of frequencies present at the inputs

to feed these channels. This is useful for systems

utilizing outboard active crossovers or requiring

full-range reproduction this channel pair.

“x1” (High-Pass): Configures the filter

to attenuate frequencies below the indicated

filter frequency at a rate of 12dB per octave.

This is useful for connection of component

speakers or coaxials to this channel pair in a

bi-amplified system.

“x10” (High-Pass): Configures the filter to

attenuate frequencies below a frequency TEN

TIMES HIGHER than the indicated filter

frequency at a rate of 12dB per octave. This is

useful for connection of tweeters to this channel

pair in a tri-amplified system.

Channel 3 & 4 Filter: 12dB/octave High-Pass

or Bandpass Filter

“Off”: Defeats the filter completely, allowing

the full range of frequencies present at the inputs

to feed these channels. This is useful for systems

utilizing outboard active crossovers or requiring

full-range reproduction this channel pair.

“BP” (High-Pass): Configures the filter to

attenuate frequencies below the indicated filter

frequency AND above the Channel 1 & 2 Filter

Frequency, at a rate of 12dB per octave. This is

useful for connection of mid-bass or mid-range

speakers in a tri-amplified system.

“HP” (High-Pass): Configures the filter

to attenuate frequencies below the indicated

filter frequency at a rate of 12dB per octave.

This is useful for connection of component

speakers or coaxials to this channel pair in a

bi-amplified system.

Subwoofer Channel Filter: 12dB/octave

or 24dB / octave, Low-Pass only

“Off”: Defeats the filter completely, allowing

the full range of frequencies present at the inputs

to feed this channel. This is useful for systems

utilizing outboard active crossovers.

“12dB” (Low-Pass): Configures the filter

to attenuate frequencies above the indicated

filter frequency at a rate of 12dB per octave.

This is useful for connection of subwoofers

in a bi-amplified system. This shallower slope

gently attenuates high-frequencies from your

subwoofer signal and is often well-suited for

systems with smaller main speakers.

“24dB” (Low-Pass): Configures the filter

to attenuate frequencies above the indicated

filter frequency at a rate of 24dB per octave.

This is useful for connection of subwoofers in

a bi-amplified system. This sharper slope more

aggressively removes high-frequencies from

your subwoofer signal and is often well-suited

for systems with larger main speakers, like our

7.7-inch component and coaxial systems.

2) “Filter Freq. (Hz)” The filter frequency

markings surrounding these rotary controls

(one in each Channel Section) are for

reference purposes and are generally accurate

to within 1/3 octave or better. If you would

like to select the filter cutoff frequency with a

higher level of precision, consult the chart in

Appendix B (page 15).

Tuning Hint: If you are using the M700/5

to drive a subwoofer system (“LP” mode),

and component satellite speaker systems

(“HP” mode), 80 Hz is a good baseline

“Filter Freq. (Hz)” setting. After properly

adjusting the “Input Sens.”, as outlined in

Appendix A (page 14), you can fine tune

the “Filter Freq. (Hz)” control to achieve

the desired system frequency response.

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