2v vs. 4v input sensitivity for 9B-SST

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promark747

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2v vs. 4v input sensitivity for 9B-SST
« on: 29 Apr 2009, 02:15 pm »
Hello,

For my Lexicon MC-8B, which outputs 2v, should I choose the 2.2v input sensitivity on my 9B-SST?  (I am using balanced connections.)  Would switching to the 4.4v option mean that the system would get louder based on the same volume knob rotation?  And finally, would the s/n ratio be better with 4v?

Thanks,
Brian

James Tanner

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Re: 2v vs. 4v input sensitivity for 9B-SST
« Reply #1 on: 29 Apr 2009, 02:50 pm »
Hello,

For my Lexicon MC-8B, which outputs 2v, should I choose the 2.2v input sensitivity on my 9B-SST?  (I am using balanced connections.)  Would switching to the 4.4v option mean that the system would get louder based on the same volume knob rotation?  And finally, would the s/n ratio be better with 4v?

Thanks,
Brian


Hi Brian,

As you increase the sensitivity from 1 to 2 to 4 volts the GAIN (volume) is reduced.
Yes the signal to noise ratio inproves with reduced sensitivity settings.

james

promark747

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Re: 2v vs. 4v input sensitivity for 9B-SST
« Reply #2 on: 29 Apr 2009, 04:00 pm »
Thanks James for the quick reply.

Just so I have it straight...increasing the sensitivity from 2 to 4 would actually reduce the volume for any given point on the volume control (i.e., 2v at 9:00 on the volume knob might sound as loud as 4v at 12:00)?  And using the 4v setting would slightly improve the s/n ratio?  (I was confused by your last statement that the s/n improves with reduced sensivitity...did you mean reduced gain and increased sensitivity?)

Thanks again.

James Tanner

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Re: 2v vs. 4v input sensitivity for 9B-SST
« Reply #3 on: 29 Apr 2009, 04:10 pm »
Thanks James for the quick reply.

Just so I have it straight...increasing the sensitivity from 2 to 4 would actually reduce the volume for any given point on the volume control (i.e., 2v at 9:00 on the volume knob might sound as loud as 4v at 12:00)?  And using the 4v setting would slightly improve the s/n ratio?  (I was confused by your last statement that the s/n improves with reduced sensivitity...did you mean reduced gain and increased sensitivity?)

Thanks again.

Correct - as you switch from 2 volts to 4 volts the volume control has to go higher for the same volume level at the speakers. Most volume controls are more 'linear' when their rotation is between 9 and 1 o'clock so the sensitivity switch allows you to optimize that condition.

james