Black Box AC470A Manual Download

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CUSTOMER

SUPPORT

INFORMATION

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877-877-BBOX

FREE technical support, 24 hours a day, 7 days a week: Call

724-746-5500

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Mail order:

Black Box Corporation

, 1000 Park Drive, Lawrence, PA 15055-1018

Web site:

www.blackbox.com

• E-mail:

[email protected]

OCTOBER 1994

AC470A

Internal Audio System

Internal Audio

System

MIN

MAX

AMPLIFIER

DIRECT

INPUT

SOUND BOARD

PC SPEAKER

MIN

MAX

Summary of Contents for AC470A

Page 1: ...support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com OCTOBER 1994 AC470A Internal Audio System Internal Audio System MIN MAX AMPLIFIER DIRECT CD INPUT SOUND BOARD PC SPEAKER MIN MAX ...

Page 2: ...wing measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult an experienced radio TV technician for help Caution Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority...

Page 3: ...osure Amplifiers Built in 4W 10W direct driven Power 12 VDC from the PC Size 1 7 H x 5 7 W x 7 9 D 4 3 x 14 5 x 20 1 cm Weight 1 5 lb 0 7 kg 1 Specifications WARNING Permanent or temporary hearing loss or impairment may result from excessive amplification of the sound through the headphone jacks Before wearing any headphones please hold them away from your ears to prevent any injury from unexpecte...

Page 4: ...you better frequency response and volume control Can be used with third party sound boards to capture display and edit audio waveforms Convenient front panel access to headphone output and microphone or CD input jacks Independent left right volume controls Direct Driven Amplifier selection PC Speaker Sound Board selection 2 2 Your Package Includes Unpack the Internal Audio System from its original...

Page 5: ...ccurate assistance if you have a complete description including The nature and duration of the problem When the problem occurs The components involved in the problem Any particular application that when used appears to create the problem or make it worse 2 5 Shipping and Packaging the Unit If you need to transport or ship your Internal Audio System We recommend that you use the original packaging ...

Page 6: ...o stereo output from your own headphones or earphones 3 Left LED This LED is frequency modulated and flashes during audio output 4 Amplified Direct Driven Selection Switch A This switch allows you to amplify the audio input through the Internal Audio System s built in amplifier or be directly driven by an external amplifier 5 Left Volume Control Controls the audio output level to the left speaker ...

Page 7: ...ce as input Figure 3 2 Back Panel Connectors 10 Sound Board Stereo Input This input accepts audio that comes from your sound board and can be internally amplified by the Internal Audio System 11 PC Speaker Input Mono Use this input to divert audio output from your PC Speaker to the Internal Audio System 12 Power Input Connector This connector accepts your PC s standard internal power plug and prov...

Page 8: ... unit into the 51 4 inch disk bay in your PC You may have to apply slight steady pressure to seat the unit completely in the disk bay Step 3 Skip to Step 5 if your PC does not have a sound board Find a vacant slot opening in the back panel of your PC and remove the existing metal blanking panel if any Insert the Metal Bracket with the attached colored stereo cables provided with the Internal Audio...

Page 9: ...ure 4 2 Connecting the Metal Bracket to a Preinstalled PC Sound Board Back Panel View Step 5 Find an unused internal power plug located inside your PC and plug this into the Power Input Connector on back of the Internal Audio System See Figure 4 3 Step 6 Plug the black cable from the Metal Bracket into the Microphone Stereo Output jack on back of the Internal Audio System Plug the green Metal Brac...

Page 10: ...r the right or left prong of the PC motherboard connector labeled SPEAKER See Figure 4 3 NOTE You can verify whether you ve attached to the correct SPEAKER prong by listening for an amplified beep after you switch on power to the computer Step 9 If you do not hear the beep repeat Step 7 but attach the Mono Cable motherboard connector to the opposite end SPEAKER prong S P E A K E R 10 INTERNAL AUDI...

Page 11: ... housing cover Then switch on power to the computer Step 10 Check the front panel LEDs on the Internal Audio System to ensure that they re lit If they aren t remove the cover from your PC and confirm that all the Internal Audio System connections have been made and that the connectors are properly seated If the LEDs still don t light call Black Box for technical support ...

Page 12: ...DIO SYSTEM 5 Operating Modes Use Action Switch A Switch B Microphone CDInput Receive audio from the sound board Easy front panel access to an external sound source Applications requiring better audio output than that provided by your PC s internal speaker Voice annotation using third party sound boards Allows non amplified sound to be received at the back panel if Metal Bracket is installed Source...

Page 13: ...rted LEDs aren t lit Volume up too high Bad or incorrect connections Input level from sound card or other external sound source is too low Connections are loose Switch A is set to DIRECT when input is driven by sound card Sound source is not present Switch B is not set to SOUND BOARD In Connection to the internal PC power source may not be secure Reduce the volume Make sure that all connections ar...

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