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d&b audiotechnik xC 24C-E Manual

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24C / 24C-E
Manual 1.1 en

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Summary of Contents for d&b audiotechnik xC 24C-E

  • Page 1 24C / 24C-E Manual 1.1 en...
  • Page 2 General information 24C / 24C-E Manual Version: 1.1 en, 02/2014, D2618.EN .01 Copyright © 2014 by d&b audiotechnik GmbH; all rights reserved. Keep this manual with the product or in a safe place so that it is available for future reference. When reselling this product, hand over this manual to the new customer.

  • Page 3: Table Of Contents

    Contents Safety precautions............4 1.1. Information regarding the use of loudspeakers..4 24C / 24C-E cardioid column loudspeaker... 5 2.1. Product description............5 2.1.1. 24C cardioid column loudspeaker......5 2.1.2. 24C-E cardioid column extender......5 2.1.3. Cardioid dispersion..........6 2.1.4. Dispersion characteristics........7 2.1.5.

  • Page 4: Safety Precautions

    1. Safety precautions 1.1. Information regarding the use of loudspeakers Potential risk of personal injury Never stand in the immediate vicinity of loudspeakers driven at a high level. Professional loudspeaker systems are capable of causing a sound pressure level detrimental to human health. Seemingly non-critical sound levels (from approx.

  • Page 5: C / 24C-E Cardioid Column Loudspeaker

    2. 24C / 24C-E cardioid column loudspeaker 2.1. Product description 2.1.1. 24C cardioid column loudspeaker The 24C is a passive 2-way column loudspeaker housing six 4” neodymium drivers and an HF array comprising six 1.1” dome tweeters. The 4" drivers are arranged in a unique cardioid setup radiating through waveguide elements at the front and damped ports at the rear of the cabinet.

  • Page 6: Cardioid Dispersion

    2.1.3. Cardioid dispersion Due to their dimensions, conventional column loudspeakers provide no significant horizontal directivity below 2 kHz. At low and mid frequencies, the resulting polar pattern is almost omni-directional (dotted line). The cardioid patterns of the 24C and 24C-E show a much higher directivity resulting in much less energy radiated into the room (continuous line).

  • Page 7: Dispersion Characteristics

    2.1.4. Dispersion characteristics The following graphs show dispersion angle over frequency of a single cabinet plotted using lines of equal sound pressure (isobars) at –6 dB and –12 dB. Isobar diagram 24C horizontal Isobar diagram 24C vertical Isobar diagram 24C with 24C-E vertical 2.1.5.

  • Page 8: Aiming Of The Beam

    2.1.6. Aiming of the beam The aiming of the beam of the HF array can be adjusted between 0° and –14°. The DMAX/H scale on the left provides a simple means of determining the correct setting for a given room geometry. The assumption here is the listening plane is horizontal and the loudspeaker column is mounted exactly vertically.

  • Page 9: Connections

    2.2. Connections 24C cabinets are fitted with a 4-pole Phoenix Combicon connector block accepting a 2-pole Phoenix Combicon screw terminal connector (cross-section up to 4 mm /AWG 11). The cabinet uses the pin assignments 1: + and 2: —. Pins 3 and 4 are not connected. 24C-E cabinets are equipped with a fixed cable gland fitted with a 2-pole Mate-N-Lok mini connector.

  • Page 10: Controller Settings

    2.3.1. Controller settings For acoustic adjustment the functions CUT, HFA and CPL can be selected. CUT circuit Set to CUT, the cabinet low frequency level is reduced. The cabinet is now configured for use with d&b active subwoofers. HFA circuit In HFA mode (High Frequency Attenuation), the HF response of the system is rolled off.

  • Page 11: Technical Specifications

    2.4. Technical specifications 24C system data Frequency response (–5 dB standard) 110 Hz - 17 kHz Frequency response (–5 dB CUT mode) 150 Hz - 17 kHz Max. sound pressure (1 m, free field) 126 dB (SPLmax peak, pink noise test signal with crest factor of 4) 24C frequency response, standard and CUT modes 24C loudspeaker Nominal impedance...
  • Page 12 24C-E loudspeaker Power handling capacity (RMS/peak 10 ms) 125/600 W Components 6 x 4“ driver with neodymium magnet Connections Fixed cable gland with 2-pole Mate-N-Lok mini through 24C Enclosure Extruded aluminum, metal baffle and front grill Weight 7 kg (15.4 lb) Mounting Dual-rail 8 mm T-slot profile at the rear 24C-E cabinet dimensions in mm [inch]...

  • Page 13: Attaching The 24C-E Extender

    3. Attaching the 24C-E extender Tools required – Torx wrench / screwdriver size #TX20 – Torx wrench / screwdriver size #TX15 Remarks The assembly may be carried out by a single person. However, we recommend a second person for assistance. Proceed as follows: 1.
  • Page 14 2. Pull out the two connecting rails half their lengths. 3. Retighten the four remaining fixing screws on the extender. 3. Joining the cabinets 1. While a second person renders assistance, insert the connecting rails of the 24C-E cabinet into the T-slot profiles at the rear of the 24C cabinet approx.

  • Page 15: Manufacturer's Declarations

    4. Manufacturer's declarations 4.1. EU conformity of loudspeakers (CE symbol) This declaration applies to: d&b 24C loudspeaker, Z1700 d&b 24C-E loudspeaker, Z1710 manufactured by d&b audiotechnik GmbH. All production versions of these types are included, provided they correspond to the original technical version and have not been subject to any later design or electromechanical modifications.
  • Page 16 www.dbaudio.com...

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Xc 24c

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