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dbx Pro 566 manual

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Table of contents for the manual

  • Page 1

    Dual V acuum T ube Compr essor Owner’s Manual Version 1.0[...]

  • Page 2

    W ARNING FOR YOUR PROTECTION, PLEASE READ THE FOLLOWING: W A TER AND MOISTURE: Appliance should not be used near water (e.g. near a bathtub, wash- bowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. POWER [...]

  • Page 3

    1 T a ble of Contents Introduction ................................................................................................................2 Features .......................................................................................................................2 Inspection ............................................................[...]

  • Page 4

    Intr oduction Thank you for purchasing the dbx 566 vacuum tube compressor . The 566 combines world-renowned dbx compression with the latest in vacuum tube technology . The dbx 566Õ s compression section incorporates the features that have made dbx the standard for high quality audio compression: Over Easyª compression curve, PeakPlusª limiting a[...]

  • Page 5

    W ar r anty This warranty is valid only for the original purchaser and only in the United States. W e warrant dbx products against defects in materials or workmanship for a period of two years from the date of orig- inal purchase for use, and agree to repair or , at our option, replace any defective item, except exter- nal power transformers, witho[...]

  • Page 6

    Connections T o connect the 566 to your system, refer to the following steps: ¥ T urn off all equipment before making any connections. ¥ Mount the 566 in a rack with the rack screws provided. The 566 can be mounted above or below anything that does not generate excessive heat. Ambient temperatures should not exceed 95¡F (35¡C) when equipment is[...]

  • Page 7

    Compr essor Contr ols Figure 2: Front Panel Controls + 0 - THRESHOLD leds: The Ò+Ó led illuminates when the signal is above the OverEasy ¨ portion of the compression curve and that the full compression ratio is in effect . If OverEasy ¨ is disabled, this led indicates that the signal is above the level set by the Compressor Threshold control an[...]

  • Page 8

    Figure 3: Hard Knee and OverEasy ® Compression Curves RA TIO control: This control selects the ratio between input and the output levels for signals above the level set by the Threshold control. It is adjustable between 1:1 (no compression) and infinity:1 (full compression). Note that when OverEasy ¨ processing is selected, the ratio slopes gradu[...]

  • Page 9

    INST Switch This switch selects the 1/4Ó Instrument input as the source for the compressor . DRIVE control This control sets the amount of gain that will be applied at the input of the vacuum tube stage present in the Compressor section. This control of fers tube drive control (with its sonic stamp) to any signal routed through the Compressor . SC[...]

  • Page 10

    Note that since the PeakPlus ª Limiter is a fail-safe Limiter it must come after the Output Gain con- trol. If the Output Gain is set too high as compared to the PeakPlus ª Level control, continuous lim- iting can occur . While PeakPlus ª is typically used as a protective function, creative ef fects can be achieved by intentionally driving the s[...]

  • Page 11

    DITHER switch This switch becomes active only when the optional dbx TYPE IV ª Conversion System digital output module is installed. Refer to the manual for the TYPE IV ª Conversion System for a description of the function of this switch. SHAPE switch This switch becomes active only when the optional dbx TYPE IV ª Conversion System output mod- ul[...]

  • Page 12

    R ear P anel LINE INPUTS Both XLR and TRS 1/4Ó connectors allow balanced or unbalanced line-level devices to be connect- ed to the input of the 566Õ s Compressor section. The nominal input level can be set to either +4 dBu or -10 dBV with the +4 dBu/-10 dBV switch. INSTRUMENT INPUT The instrument input is configured as a high impedance, unbalance[...]

  • Page 13

    Specifica tions COMPRESSOR Threshold Range: -40 dBu to +20 dBu Ratio: Infinity: 1 Threshold Characteristic: Selectable OverEasy ¨ or hard knee curves Attack/Release Characteristic: AutoDynamic ª Attack/Release Modes: Selectable Manual or Auto Manual Attack T ime: Scalable program-dependent. T ypically 3 dB/msec to .04 dB/msec Manual Release T ime[...]

  • Page 14

    Specifications Specifica tions (cont.) Power Consumption: 30 W atts max. Fuse: 100/120V : 500mA 250V Slow Blow 5mm X 20mm 230/240V : T250 mA 250V 5mm X 20mm Mains Connection: IEC 320 Receptacle PHYSICAL: Dimensions: 3.5ÓH X 19ÓW X 8ÓD W eight: 12 lbs (5.5 kg) Shipping W eight: 13 lbs (5.9 kg) Note: 0 dBu = 0.775V RMS. Specifications subject to c[...]

  • Page 15

    13 dbx 566 Settings Page Photocopy this page and mark the settings you use for your sessions. Session: Date: Comments: Session: Date: Comments: 13[...]

  • Page 16

    8760 South Sandy Pkwy . Sandy , Utah 84070 Phone: (801) 568-7660 Fax: (801) 568-7662 IntÕl Fax: (603) 672-4246 Questions or comments? E¥mail us at: customer@dbxpro.com or visit our World Wide W eb home page at: www .dbxpro.com[...]