background image

2.2 Front Panel Connections

STEREO COUPLE Switch

This switch sets the 266xs for Stereo or Dual Mono operation. Press the STEREO COUPLE switch 
in for stereo operation where Channel 1 becomes the master controller for both channels. All 
of Channel 2’s controls, switches, and LEDs will be disabled (except for the Channel 2 GAIN 
REDUCTION meter), since Channel 2 is the slave. 

With the STEREO COUPLE switch out, the unit functions as two separate mono compressor/
gates, each with its own independent controls.

The STEREO COUPLE switch lights red when the 266xs is stereo-coupled.

BYPASS Switch

Press this switch in to bypass the front panel controls, effectively canceling the function and 
processing effect of the 266xs compression, gating and gain settings. The input signal is still 
present at the 266xs Output, but is now unaltered by the 266xs controls. BYPASS is especially 
useful for making comparisons between processed and unprocessed signals. Note that with 
stereo operation (STEREO COUPLE switch pressed in), the Channel 1 BYPASS switch controls 
both channels.

The BYPASS switch lights red when BYPASS mode is active.

GAIN REDUCTION (dB) Meter 

This meter displays the amount of signal attenuated from the input signal by the 266xs 
Compressor or Expander/Gate. When the Compressor and Expander/Gate are both active, the 
meter displays the maximum amount of gain reduction for whichever function is greater - 
Compressor or Expander/Gate.

OUTPUT GAIN (dB) Control

This control sets the overall gain of the 266xs, from -20dB to +20dB. The OUTPUT GAIN 
control is especially useful to compensate for the RMS level decrease which results from the 
266xs dynamic processing effects. After you adjust the 266xs controls for the desired amount 
of compression, set the OUTPUT GAIN to add the same amount of gain that is shown on the 
GAIN REDUCTION meters. For example, if the average amount of gain reduction shown on the 
meters is 10dB, then setting the OUTPUT GAIN control to +10dB will compensate for the 10dB 
average level reduction at the output.

NOTE:

 The 266xs Compressor and Expander/Gate control settings are interactive and can 

affect gain, so watch your playback levels.

NOTE:

 Setting the Compressor RATIO to 1:1 will turn the Compressor off, regardless of the 

setting of the Compressor THRESHOLD control and BELOW/OVEREASY/ABOVE LED status. 
Setting the Compressor THRESHOLD control to +20dB will prevent all but the highest level 
peaks from being compressed. 

Section 2

Getting Started

5

dbx 266xs

Summary of Contents for 266xs

Page 1: ...User Manual DualCompressor Gate Professional Audio Equipment...

Page 2: ...pment only to the power source indicated on the equipment rear panel To reduce the risk of fire or electric shock refer servic ing to qualified service personnel or equivalent If connected to 240V sup...

Page 3: ...device may not cause harmful interference and this device must accept any interference received including interference that may cause undesired operation Operation of this unit within significant ele...

Page 4: ...ty 3 Section 2 Getting Started 4 2 1 Rear Panel Connections 4 2 2 Front Panel Connections 5 Section 3 Making Connections 8 Section 4 Technical Support and Facts 9 4 1 Technical Support 9 4 2 Registrat...

Page 5: ...eveling to aggressive peak limiting 1 2 Common Gating Applications Gating Dry Percussive Sounds e g Snare Drum Kick Drum Gating Sounds That Have Longer Decay e g Cymbal Piano Gating Hum or Buzz From L...

Page 6: ...tory for service you MUST first contact Technical Support to obtain a Return Authorization Number No returned products will be accepted at the factory without a Return Authorization Number Please refe...

Page 7: ...eturned to dbx WITH RETURN AUTHORIZATION from the factory where all parts and labor will be covered up to a period of two years A Return Authorization number must first be obtained from dbx The compan...

Page 8: ...balanced output impedance is 100 and the unbalanced output impedance is 50 In the 10dBV setting the balanced output impedance is 1k and the unbalanced output impedance is 500 OPERATING LEVEL Switch Th...

Page 9: ...This meter displays the amount of signal attenuated from the input signal by the 266xs Compressor or Expander Gate When the Compressor and Expander Gate are both active the meter displays the maximum...

Page 10: ...not get fully pro cessed by the RATIO ATTACK and RELEASE controls until they have passed somewhat above the THRESHOLD reference level As the signal level passes the THRESHOLD level processing increase...

Page 11: ...y tones e g bass guitar set RELEASE and ATTACK to 2 00 or slower NOTE ATTACK and RELEASE controls operate together and in conjunction with the RATIO control Changing one control may necessitate changi...

Page 12: ...ions refer to the following steps Turn Off all equipment before making any connections Mount the 266xs in a 1U rack space optional The 266xs requires one rack space height and 1 rack space width It ca...

Page 13: ...d to the side panel of the unit NOTE Please refer to the terms of your Limited Two Year Standard Warranty which extends to the first end user After the warranty expires a reasonable charge will be mad...

Page 14: ...Hz measurement bandwidth Dynamic Range 114dB unweighted Interchannel Crosstalk 95dB 20Hz to 20kHz Common Mode Rejection 40dB typically 55dB 1kHz Stereo Coupling True RMS Power Summing THRESHOLD Compre...

Page 15: ...Section A Appendix 11 A 2 Block Diagram dbx 266xs...

Page 16: ...8760 South Sandy Parkway Sandy Utah 84070 Phone 801 568 7660 Fax 801 568 7662 Int l Fax 801 568 7583 Questions or comments Contact us at www dbxpro com Printed in China 18 0806 A...

Reviews: