Rane AC 23B (1998 version) Bedienungsanleitung PDF herunterladen

Manual-1

AC 23B

ACTIVE CROSSOVER

OPERATORS MANUAL

AC 23B CONNECTION

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

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

pin 1 Signal ground (for unbalanced use), with the connector

case or shell tied to chassis ground.

Balanced Operation

Use only when driving from a true balanced source and

driving to a true balanced destination—either transformer

coupled or active drive. Connect the input to pins 2 and 3 with

pin 2 positive. Do not connect pin 1. Terminate the shield to

the case or shell. Connect the output to pins 2 and 3 with pin

2 positive. Do not connect pin 1. Connect the shield to the

case or shell.

Unbalanced Operation

Connect the input between pins 2 and 1 with pin 2

positive and pin 1 Signal ground. Short pin 3 to pin 1.

Terminate the shield to the case or shell. Connect the output

between pins 2 and 1 with pin 2 Positive. Leave pin 3 open—

do not short it to pin 1. Connect the shield to the case or shell.

Combination Operation

For combined balanced and unbalanced operation, use

whichever half of the above instructions apply for each end.

See the “Sound System Interconnection” RaneNote

included with this manual for more information on cabling

and grounding requirements.

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.

The AC 23B is a fully balanced version of the popular AC 23 and is equipped with 3-pin (XLR-type) connectors instead

of the standard ¼" TRS jacks. A STEREO/MONO switch has been added to the AC 23B and should be set appropriately.

Switching jacks are not provided. All other specifications and operation are identical.

To operate the unit in Stereo 3-Way mode, be sure the rear panel switches are set for STEREO 3-WAY. Following the

labels above the controls and jacks in logical order, you will find CHANNEL 1 INPUT, LOW OUT, MID OUT, and HIGH

OUT, with the same for CHANNEL 2. The fact that the AC 23B is a multiple function unit means the outputs are switched

around in Mono mode. To use the unit as a Mono 5-Way, first check that the CHANNEL 1 and 2 switches are set to 3-

WAY, and the other switch is set to 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 HI MID OUT and then

proceed to the HIGH OUT. An internal jumper determines 4 or 5-Way mode. Our apologies to 4-Way users: We must ship

the units in the 5-Way mode since normal Stereo 3-Way operation demands it: a fact not the least bit obvious, but neverthe-

less, a fact it remains. Pity. See page Manual-6 for Mono 4-Way configuration.

CAUTION: Never connect anything except an approved Rane Power supply to the thing that looks like a red tele-

phone jack on the rear of the AC 23B. This is an 18 VAC center tapped power input. Consult the Rane factory for a

replacement or substitution.

WEAR PARTS: This product contains no wear parts.

1 2 3 4 5 6 ... 17 18

Inhaltsverzeichnis

Seite 1 - OPERATORS MANUAL

Manual-1AC 23BACTIVE CROSSOVEROPERATORS MANUALAC 23B CONNECTIONIn agreement with IEC and AES/ANSI standards, AC 23Bwiring convention is pin 2 Positiv

Seite 2 - Manual-2

Manual-10OPERATING INSTRUCTIONSSelecting CrossoverFrequenciesMost speaker manufacturers supply low and/or highfrequency cut-off points for each driver

Seite 3 - Manual-3

Manual-11Fig. 1 In-Phase Axis Response Without Time DelayFig. 2 Corrected In-Phase Axis Response With Electronic Time Delay onLow Frequency DriverTime

Seite 4 - Manual-4

Manual-12physically move the high driver farther forward until thedisplay shows +3 dB (red). The amount of displacementcorrection available from the D

Seite 5 - Manual-5

Manual-134. Now press in the MID MUTE switch on the crossover sothat the tone is removed from the mid driver. Withoutre-adjusting either the meter or

Seite 6 - Manual-6

Manual-14 Voice Coil Displacement (Inches)(Hz) .75" 1.5" 3" 6" 9" 12" 15" 18" 21" 24&qu

Seite 7 - IMPORTANT NOTE

Manual-15Setting the Output Level ControlsChoosing the crossover frequencies was the easy part.Now it gets real fun. The idea is to set the output Lev

Seite 8 - Manual-8

Manual-16Setting Levels Using an SPLMeter & Pink Noise GeneratorThe MUTE switches on the AC 23B make using an SPLmeter an easy and relatively accu

Seite 9 - Manual-9

Manual-17CHANNEL TWO:1. Refer to the board layout on page Schematics-1.2. Behind the Channel 2 LF DELAY pot find the jumperlabeled W44. Behind the Cha

Seite 10

Manual-18Monoing the Low FrequencyOutputsIt is possible to mono the Low Frequency Outputs of theAC 23B by an internal jumper modification. This requir

Seite 11 - Time Delay Adjustment Using

Manual-2FRONT PANEL: STEREO 2-WAY CONFIGURATIONObserve the labels screened above the controls for stereo operation.NOTE: In the 2-Way mode, the AC 23B

Seite 12 - Manual-12

Manual-3REAR PANEL: STEREO 2-WAY INSTALLATIONObserve the labels above the Inputs and Outputs for Stereo operation.햲 CHANNEL 1 INPUT: Plug the left out

Seite 13 - Manual-13

Manual-4FRONT PANEL: STEREO 3-WAY CONFIGURATIONObserve the labels screened above the controls for stereo operation.햲 POWER switch: Two guesses.햳 POWER

Seite 14 - Delay vs. Frequency Table

Manual-5REAR PANEL: STEREO 3-WAY INSTALLATIONObserve the labels above the Inputs and Outputs for Stereo operation.햲 CHANNEL 1 INPUT: Plug the left out

Seite 15 - Analyzer

Manual-6FRONT PANEL: MONO 4-WAY AND 5-WAY CONFIGURATIONObserve the labels screened below the controls for Mono operation.햲 POWER switch: Two guesses.햳

Seite 16 - Setting Levels Using an SPL

Manual-74-WAY MONO USERS: An internal jumper determines 4 or 5-Way mode. Our apologies: We must ship the units in the5-Way mode since normal Stereo 3-

Seite 17 - Modification

Manual-8REAR PANEL: MONO 4-WAY AND MONO 5-WAY INSTALLATION**THIS OUTPUT IS NOT USED FOR 4-WAY MONO OPERATION. 4-WAY USERS SEE JUMPER INSTRUCTIONS ON P

Seite 18 - Equalization Modification

Manual-9REAR PANEL: ALTERNATE MONO 4-WAY INSTALLATIONNote: The switching in the AC 23B will result in a Mono 4-Way configuration with the crossover ra

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Rane AC 23B (1998 version) Bedienungsanleitung

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