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Manual-3

1

 3-WAY / 4-WAY switch: 

Converts the outputs from 3-Way to 4-Way. This switch removes the Hi-Mid frequency crossover from 

the signal path — the HI-MID / HIGH Frequency control and all HI-MID controls are disabled. The MID / HI-MID Frequency 

control becomes the MID / HIGH Frequency control.

2

 CHANNEL A and B INPUTS: 

Plug the outputs of the mixer, equalizer or other source to these Inputs.*

3

 LOW Outputs: 

Connect the CHANNEL A LOW Output to the left channel input of the low frequency amplifier, and the 

CHANNEL B LOW Output to the right channel input of the low amplifier.  If you need a summed Mono Low Output, use the 

CHANNEL A Output (see 

7

).*

4

 MID Outputs: 

Connect the CHANNEL A MID Output to the left channel input of the amplifier, and the CHANNEL B Mid 

Output to the right channel input of the amplifier.*

5

 HI-MID Outputs: 

Are only used in 4-WAY mode. Connect the CHANNEL A HI-MID Output to the left channel input of the 

amplifier, and the CHANNEL B HI-MID Output to the right channel input of the amplifier.*

6

 HIGH Outputs:

 Connect the CHANNEL A HIGH Output to the left channel input of the high frequency amp, and the 

CHANNEL B HIGH Output to the right channel input of the high frequency amp.*

7

 CHANNEL A LOW Output: 

Connect this Output to the input of the low frequency amplifier when the MONO LOW switch is 

activated on the front panel. It contains the sum of both CHANNEL A and B LOW signals.*

8

 SUM Outputs: 

Are a sum of the LOW, MID, HI-MID, and HIGH Outputs. The Sum Outputs are useful to connect to instru-

mentation devices as indicated in the setup procedure. Use the Sum Outputs for split-band EQ and/or split-band Limiter applica-

tions. When using the Sum Outputs, it is important to note that CD Horn EQ and Delays affect the summed output. If you want 

a flat response, do 

not 

use delay or CD Horn EQ when using these Sum Outputs.*

9

 Output INVERT switches: 

may assist in keeping drivers in-phase without having to rewire connections. Linkwitz-Riley filter 

Outputs are always in phase with correct polarity. Be sure the amplifiers are 

off 

before changing any of these switches.

 

0

 Power connector:

 Uses the standard cord provided. Inside the AC 24 is a universal internal switching power supply that accepts 

100 to 240 VAC at 50 to 60 Hz, allowing it to work in most countries.

*Note: In agreement with IEC and AES/ANSI standards, wiring convention is pin 2 positive, pin 3 is negative (return), pin 1 is shield chas-

sis ground.

AC 24

SUM

HIGH

HI-MID

MID

LOW

INPUT

3-WAY      4-WAY

MADE IN U.S.A.

RANE CORP.

INVERT

INVERT

INVERT

(HI-MID UNUSED)

INVERT

INVERT

INVERT

INVERT

INVERT

100-240V

20 WATTS

50/60 Hz

FOR CONTINUED 

GROUNDING 

PROTECTION

DO NOT REMOVE 

SCREW

CHANNEL

B

CHANNEL

A

SUM

HIGH

HI-MID

MID

LOW

MONO LOW

INPUT

4-WAY

4-WAY

This  device  complies  with  Part  15  of  the  FCC  Rules.  Operation  is 

subject to the following two conditions: (1) this device may not cause 

harmful interference, and (2) this device must accept any interference 

received,  including  interference  that  may  cause  undesired  operation.

WIRING

PIN 2 = POSITIVE

PIN 3 = NEGATIVE

PIN 1 = CHASSIS GROUND

COMMERCIAL AUDIO

EQUIPMENT 24TJ

R

ACN 001 345 482

8

6

5

4

3

2

8

6

5

4

7

2

1

9

10

9

Summary of Contents for AC 24

Page 1: ...Select Crossover Frequencies on page Manual 4 The DELAY controls add from 0 to 10 ms of signal delay to each Output to assist in signal aligning drivers See Adjust Signal Delay on page Manual 5 CD HO...

Page 2: ...ne up procedures as described beginning on page Manual 4 4 Crossover FREQUENCY controls Set the crossover frequencies between the Low Mid Hi Mid and High frequency Outputs The Hi Mid control is inacti...

Page 3: ...m Outputs are useful to connect to instru mentation devices as indicated in the setup procedure Use the Sum Outputs for split band EQ and or split band Limiter applica tions When using the Sum Outputs...

Page 4: ...overlap in response After Crossover Frequency settings are made based on driver data the best way to proceed is with a realtime analyzer see the Rane RA 30 page Manual 8 Using a realtime analyzer all...

Page 5: ...13 57 This gives the delay in milliseconds and pot rotation in fractional dots See Figure 4 Signal Delay Adjustment Method Two OK so you want to do this the hard way The following example outlines on...

Page 6: ...he RA 30 LED associated with the Mid Hi Mid crossover frequency is green iii MUTE the Hi Mid Output c Set the reference level for the Mid Output i UnMUTE the Mid Output ii Adjust AC 24 Mid Output Leve...

Page 7: ...engage the filter an approximate is fine it doesn t have to be exact STEP FOUR Set Output Levels 1 Set all AC 24 Output LEVEL controls to minimum 2 MUTE all AC 24 Outputs 3 Set the INPUT LEVEL contro...

Page 8: ...er can work alone like a parametric equalizer in the hands of an expert This does require experience skill and the right equipment to back it up not to mention a licensed set of ears Regardless of whi...

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