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6.6. Bridged Mono Mode Connections 

 

 

 
 

7.  LX Clip Limitting 

At the amplifier’s full power limit, or clipping point, LX will be activated. This is indicated by an 

illumination of the Limiter LED. The channel gain is automatically reduced, protecting the 

loudspeakers from potential damage from the high power, continuous square waves that would 

otherwise be produced. LX may be activated by uncontrolled feedback, oscillations, improper 

equipment gain settings, or an equipment malfunction upstream from the amplifier. Only steady or 

excessive clipping (not normal program transients) will trigger LX. The circuit is virtually transparent in 

operation and full signal bandwidth is maintained. 

 

8.  IGM Impedance Sensing 

IGM (Instantaneous Gain Modulation) is an innovative circuit that allows the amplifier to operate safley 

into difficult loads. When the amplifier sees a load that overstress the output stage, the IGM circuit 

adjusts the channel gain to a safe level. Like LX, the IGM circuit is inaudible in normal use. In addition, 

if extreme and sustained low impedance is encountered, the amplifier’s output relay will open. 

 

9.  Auto Ramp Protection 

Auto Ramp operates every time the amplifier is turned on or is reactivated after a protect condition is 

corrected. This exclusive feature gradually increases gain to the attenuator setting avoiding 

unnecessary stress on the loudspeakers. 

 

10. 

Thermal Protection 

Abnormally high heat sink temperatures will engage the protect circuit for the overheating channel 

only. (An output relay disconnects the loudspeakers until nominal temperature range is restored.) 

During this time, the Protect LED will light and the LCD display will show Protection and Fault if the 

power transformer gets too hot, its thermal sensing circuit will disconnect both channel outputs. During 

this time, the Active LED will extinguish, the Protect and Limiter LEDs will stay lit and the cooling fan 

will continue running at low speed. Normal operation resumes once the transformer cools to a safe 

level. 

Содержание ELXA Series

Страница 1: ...User manual...

Страница 2: ...2 Cooling System 8 5 3 Connecting Inputs 8 5 4 Connecting Outputs 9 6 Mode Selection 9 6 1 Stereo Mode 9 6 2 Parallel Mode 9 6 3 Bridged Mono Mode 9 6 4 Stereo Mode Connections 10 6 5 Parallel Mode Co...

Страница 3: ...location with high humidity or lots of dust Containers with water should not be placed on the set Keep away from sources of hum and noise Such as transformer motor tuner TV set and amplifier To avoid...

Страница 4: ...ty The dealer will not accept liability for any resulting defects or problems Make sure the electrical connection is carried out by qualified personnel All electrical and mechanical connections have t...

Страница 5: ...sted before final assembly Finally each amplifier is burned in and thoroughly tested using precision audio test equipment before shipping In addition all ELXA Series amplifiers in corporate exclusive...

Страница 6: ...ut Attenuators 4 Protect LED Indicates that the channel is in Protect mode speakers disconnected by output relay 5 Limiter LED Illuminates at the clipping threshold Continuous illumination also indica...

Страница 7: ...llel The unused connectors may be used for loop through connect ion to other amplifiers NOTE Unbalanced TIP SLEEVE plugs may be used with the balanced TRS Tip Ring Sleeve connectors The RING terminal...

Страница 8: ...lots The intelligent variable speed DC fans are controlled by heat sink temperature sensing circuits When the amplifier is turned on the fans briefly rev up then slow to an idle this indicates that th...

Страница 9: ...and appear at outputs for both Channels A B wird das Eingangssignal des Kanals A verst rkt auf beiden Ausg ngen ausgegeben Either the TRS input or the XLR input on Channel A may be used 6 3 Bridged M...

Страница 10: ...cting amplifier outputs to oscilloscopes or other test equipment while the amplifier is in bridged mode may damage both the amplifier and test equipment 6 4 Stereo Mode Connections 6 5 Parallel Mode C...

Страница 11: ...GM circuit adjusts the channel gain to a safe level Like LX the IGM circuit is inaudible in normal use In addition if extreme and sustained low impedance is encountered the amplifier s output relay wi...

Страница 12: ...rcuit and switch on the amplifier again to restart the amplifier 12 DC Voltage Protection If an amplifier channel detects DC voltage at its output terminals the output relay will immediately open to p...

Страница 13: ...13 17 14 Appendices Amplifier specifications...

Страница 14: ...14 17...

Страница 15: ...15 17...

Страница 16: ...16 17...

Страница 17: ...17 17 Importeur B K Braun GmbH Industriestra e 1 D 76307 Karlsbad www bkbraun com info bkbraun com...

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