Operating instructions

ManualsBrandsRane ManualsComputer equipmentAC 23S

Manual-1

AC 23S

ACTIVE CROSSOVER

OPERATORS MANUAL

WEAR PARTS: is product contains no wear parts.

MONO 4W OR 5W: INACTIVE 4W: INACTIVE4W: INACTIVE

100

MAXMIN

10 0

80 900

850

15 0

200

240

75 0

600

400

19 0

250

7 . 0k

5.8k

550

47 5

350

70 0

2.0k

2.8k

4. 5k

1.0k

19 0

250

7 . 0k

5. 8k

550

47 5

350

70 0

2.0k

2.8k

4. 5k

1.0k

1k70

4W: MID / HIGH

2W: INACTIVE 2W: INACTIVE 2W: LOW / HIGH 2W: LOW / HIGH2W: INACTIVE2W: INACTIVE 2W: LOW2W: LOW

10 0

80 900

850

15 0

200

240

75 0

600

400

1k70

MUTE

LEVEL LEVEL LEVEL LEVEL

MASTER

LEVEL

MASTER

LEVEL LEVEL LEVEL

MUTE

FREQUENCY

DELAY DELAY DELAY DELAY

FREQUENCY FREQUENCY

MUTE MUTE

AC 23S

ACTIVE

CROSSOVER

CH 2CH 1

FREQUENCY

LOW MID LOW MIDHIGH HIGH

MIDMONO MASTER SUBWOOFER SUB / LOW HIGHLOW LOW / MID

MID / HIGHLOW / MID MID / HIGHLOW / MID

5W: HIGH-MID / HIGH5W: HIGH-MID5W: MID / HIGH-MID

POWER

QUICK START

Labels above the controls refer to the unit being operated in the

2- or 3-Way Stereo mode. Labels below the controls refer to the

unit being operated in the 4- or 5-Way Mono mode.

Set the STEREO/MONO switch appropriately. e fact that

the AC 23S is a multiple function unit means the outputs are

switched around in Mono mode.

To operate the unit in Stereo 3-Way mode, be sure the rear

panel switches are set for STEREO 3-Way, and the 4W / 5W

switch is set for 5-Way. Following the labels above the controls

and jacks in logical order, you will ﬁnd Channel 1 Master Input

LEVEL, LOW Output, MID Output, and HIGH Output, with

the same for Channel 2. If you need a summed Mono Low Ou-

put, see ‘Monoing the Low Outputs’ on page Manual-15.

To use the unit as a Mono 5-Way, ﬁrst check that the Chan-

nel 1 and 2 switches are set to 3-WAY, and the push-switch is

depressed for MONO. Connect the INPUT source to Channel 1

only. Following the labels below the jacks, look at SUB OUT,

then look over at LOW OUT, now go back to MID OUT, then

over to HIGH-MID OUT and then proceed to the HIGH

OUT.

ere are two diﬀerent conﬁgurations for Mono 4-Way

systems. If your LOW / MID can use a crossover frequency

between 70 Hz-1 kHz, see page Manual-7. If your LOW / MID

prefers a higher range of 190 Hz-7 kHz, see page Manual-8.

In agreement with IEC and AES/ANSI standards, AC 23S

wiring convention is pin 2 Positive, pin 3 Negative (return),

pin 1 to chassis ground. See the “Sound System Interconnection”

RaneNote included with this manual for more information on

cabling and grounding requirements.

Summary of content (15 pages)

PAGE 1
OPERATORS MANUAL AC 23S ACTIVE CROSSOVER LOW CH 1 4 LEVEL 6 2 4 8 0 LOW / MID 2W: INACTIVE MASTER LEVEL 10 MONO MASTER 6 2 8 0 10 DELAY MUTE 4 6 2 8 MIN MAX SUBWOOFER MID 2W: INACTIVE 2W: LOW FREQUENCY LEVEL DELAY 240 400 MUTE 200 600 4 6 4 6 150 750 100 850 80 900 2 8 2 8 70 1k 0 SUB / LOW 10 MIN MID MID / HIGH 2W: LOW / HIGH FREQUENCY 700 1.0k 550 2.0k 475 2.8k 350 4.5k 250 5.8k 190 7.
PAGE 2
FRONT PANEL: STEREO 2-WAY CONFIGURATION Stereo 2-way control labels are in this row LOW CH 1 4 LEVEL 6 2 4 8 0 10 MONO MASTER 1 LOW / MID 2W: INACTIVE MASTER LEVEL 6 2 8 0 10 DELAY MUTE 4 6 2 8 MIN MAX SUBWOOFER MID 2W: INACTIVE 2W: LOW FREQUENCY LEVEL DELAY 240 400 MUTE 200 600 4 6 4 6 150 750 100 850 80 900 2 8 2 8 70 1k 0 SUB / LOW � 10 MIN MID / HIGH 2W: LOW / HIGH FREQUENCY 700 1.0k 550 2.0k 475 2.8k 350 4.5k 250 5.8k 190 7.
PAGE 3
REAR PANEL: STEREO 2-WAY CONNECTIONS Stereo 2-way connection labels are in this row AC 23S 100-240 V 50/60 Hz 7 WATTS COMMERCIAL AUDIO EQUIPMENT 24TJ MADE IN U.S.A. RANE CORP.
PAGE 4
FRONT PANEL: STEREO 3-WAY CONFIGURATION Stereo 3-way control labels are in this row LOW CH 1 4 LEVEL 6 2 4 8 0 LOW / MID 2W: INACTIVE MASTER LEVEL 10 MONO MASTER 6 2 8 0 10 DELAY MUTE 4 6 2 8 MIN MAX SUBWOOFER 1 345 MID 2W: INACTIVE 2W: LOW FREQUENCY LEVEL DELAY 240 400 MUTE 200 600 4 6 4 6 150 750 100 850 80 900 2 8 2 8 70 1k 0 SUB / LOW 10 MIN MID / HIGH 2W: LOW / HIGH FREQUENCY 700 1.0k 550 2.0k 475 2.8k 350 4.5k 250 5.8k 190 7.
PAGE 5
REAR PANEL: STEREO 3-WAY CONNECTIONS Stereo 3-way connection labels are in this row AC 23S 100-240 V 50/60 Hz 7 WATTS COMMERCIAL AUDIO EQUIPMENT 24TJ MADE IN U.S.A. RANE CORP.
PAGE 6
FRONT PANEL: MONO 4-WAY AND 5-WAY CONFIGURATION Mono 4-way and 5-way control labels are in these rows LOW CH 1 4 LEVEL 6 2 4 8 0 LOW / MID 2W: INACTIVE MASTER LEVEL 10 MONO MASTER 6 2 8 0 10 DELAY MUTE 4 6 2 8 MIN MAX SUBWOOFER 1 234 MID 2W: INACTIVE 2W: LOW FREQUENCY LEVEL DELAY 240 400 MUTE 200 600 4 6 4 6 150 750 100 850 80 900 2 8 2 8 70 1k 0 SUB / LOW 10 MIN MID / HIGH 2W: LOW / HIGH FREQUENCY 700 1.0k 550 2.0k 475 2.8k 350 4.5k 250 5.8k 190 7.
PAGE 7
REAR PANEL: MONO 4-WAY AND MONO 5-WAY CONNECTIONS Mono 4-way and 5-way connection labels are in this row AC 23S 100-240 V 50/60 Hz 7 WATTS COMMERCIAL AUDIO EQUIPMENT 24TJ MADE IN U.S.A. RANE CORP.
PAGE 8
REAR PANEL: ALTERNATE MONO 4-WAY CONNECTIONS Mono 4-way connection labels are in this row AC 23S 100-240 V 50/60 Hz 7 WATTS COMMERCIAL AUDIO EQUIPMENT 24TJ MADE IN U.S.A. RANE CORP.
PAGE 9
OPERATING INSTRUCTIONS Selecting Crossover Frequencies Most speaker manufacturers supply low and/or high frequency cut‑off points for each driver, especially if these are supplied in a system. These cut‑off frequencies are based on each driver’s performance at and beyond this point, with a certain safety margin to accommodate more gentle filter roll‑offs and resultant higher output beyond the recommended performance range.
PAGE 10
Time Delay Adjustment Using Realtime Analyzer & Pink Noise This method outlines the use of a realtime analyzer, pink noise generator and flat response microphone to set crossover time delay. Some references will be made to the Rane RA 30 realtime analyzer for those with the intelligence and good taste to use one of these regularly. The procedure applies to virtually any analyzer system.
PAGE 11
Time Delay Adjustment Using SPL Meter & Tone Generator Now that good quality realtime analyzers are becoming more affordable and easier to use, there are few reasons why one of these should not be regularly used in any sound system. If an analyzer is simply not available, an accurate delay setting can be obtained by using an SPL meter (obtainable at most local electronics stores, the best is the Rane RA 30) and some kind of variable tone generator.
PAGE 12
Delay vs. Frequency Table If you do not have the equipment necessary to electronically align the system as described in previous sections, you may use the table below to obtain a rough and approximate phase alignment of your drivers. Measure the horizontal displacement between the voice coils of the two adjacent drivers sharing the same crossover point, then find the column in the table nearest your actual displacement.
PAGE 13
Setting the Output Level Controls Choosing the crossover frequencies was the easy part. Now it gets real fun. The idea is to set the output Level controls on the crossover so that the entire speaker system has a uniform, flat response. Unfortunately, the room in which the speakers are placed has a habit of always getting into the act, so things get messy. As a result there seems to be two schools of thought regarding the use of active crossovers.
PAGE 14
Setting Levels Using an SPL Meter & Pink Noise Generator The MUTE switches on the AC 23S make using an SPL meter an easy and relatively accurate means of tuning a system. The Rane RA 30 has everything you need, an SPL meter and a pink noise source. If you can’t get one of those right now, obtain a good SPL meter and a pink noise generator from a local electronics store. You may also use a sweep or tone generator in place of a pink noise source.
PAGE 15
Monoing the Low Outputs Constant Directivity Horn EQ Mod It is possible to mono the Low Frequency Outputs of the AC 23S by an internal jumper. The unit should only be opened by qualified service personnel. Constant Directivity (or CD) horns need additional equalization to help cover the same area a long throw horn can cover. Additional circuitry has been added to the AC 23S for additional equalization of the High Frequency outputs for the CD Horns.