Crate Amplifiers LS3-231, LS1-131 Upper-MidRange 4kHz-8kHz, High Range 8kHz-20kHz, Applications

LS1-131/LS2-215/LS3-231Constant Q Graphic Equalizers

Upper-Mid Range: (4kHz-8kHz)

This region is the “presence” range which can determine whether the mix or instrument is “harsh” and “piercing” or “distant” and “muffled”. This range will also help voices and other instruments cut through a mix when boosted. When high frequency “feedback” occurs, this region is one of the most critical in eliminating it.

High Range: (8kHz-20kHz)

High end, as it is usually perceived, is actually below 12kHz. However, the 10kHz to 16kHz range is used to enhance vocals and wind instruments by bringing out “breath” sounds that give them distinction and clarity. Cymbals on drums can also be made to appear more cutting and clear in this region. The range of 16kHz to 20kHz can be used to compensate for off-axis high frequency deficiencies of horns and tweeters.

APPLICATIONS:

SOME METHODS OF CONNECTION:

There are several different ways to connect an equalizer to a sound system. The equalizer may be connected directly in-line with the signal source (see figure 6 below), to the “insert” jack of a mixer/amplifier’s channel section (figure 7, below), or in-line between a mixer and an amplifier (figure 8, following page). Your dealer can assist you in choosing the connection which is best suited for your particular needs.

Figure 6: In-Line with Signal Source:

SOURCE

MIXER (OR AMPLIFIER)

	EQUALIZER
Source connects to	BALANCED OUTPUT
BALANCED INPUT	jack of equalizer
jack of equalizer	connects to INPUT
	jack of mixer or
	amplifier

Figure 7: Connect to an Insert Jack:

"Send" side of the signal cable harness connects to the eq's BALANCED INPUT jack IN

	"Return" side of the signal cable
EQUALIZER	harness connects to the eq's
	BALANCED OUTPUT jack
OUT

"Insert" cable harness,

TIP SLEEVE

connected to the

mixer/amplifier's MIXER (OR AMPLIFIER)

"INSERT" CABLE DETAIL:

SLEEVE

TIP

INSERT jack

TIP RING

TIP

(see detail to the right)

SLEEVE

RING SLEEVE

Typical "Insert" cable harness assembly. Stereo end of harness plugs into INSERT jack. "Tip" of stereo end carries signal to one of two mono plugs,

TIP SLEEVE

"ring" carries signal to other plug.

SLEEVE

TIP

"Send" side of INSERT jack goes to eq's IN jack, "Return" side goes to eq's OUT jack. This may vary from mixer to mixer; some experimentation may be required to achieve the proper results.

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