Sound Performance Lab Model 2601 Signal LED, Speaker Action, Speaker Cabinet, Speaker Voicing

Front Panel Overview

Control Elements		Controls, LEDs and Switches from left to right
	4*(	Signal LED
		The signal LED indicates the presence of a signal at the Transducer‘s input. It is activated at a
		-20 dBu level.
		WARNING
		If an amplifier is connected and the Signal LED illuminates though a signal is not present or
		too much noise from the amp is not the reason, the lighted LED can indicate a high frequency
		resonance of the amp.
		In this case turn down the master volume of the amp until the LED goes out. High frequency
		resonances can overload and damage the guitar amp!
		Such problems are not a result of Transducer use, but reside within the guitar amp.

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Speaker Action

This simulates speaker cone characteristics at different levels. With a moderately driven guitar box (Speaker Action from 0%-35%), speakers ideally reproduce the signal clearly without too many side effects. As levels increase, overtones are added by the overdriven

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speaker, producing its characteristic “rasping” distortion effect. Speaker Action allows for the simulation of this effect.

Speaker Actions is, as with Miking Level and Output Gain, a level control. Turning it to the left allows only low levels to pass, just as with a cabinet driven at low levels. If a small Speaker Action is wanted, it must be compensated for with a comparable increase in Miking Level – in principle the same as you would need to do in working with a cabinet.

Please pay attention to the information under “Leveling the Transducer” on page 20.

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Speaker Cabinet

This switch toggles between an open and closed guitar cabinet characteristic.

“Open” sounds definitely more open, brilliant and direct, as the signal contains more tran- sients and produces less punch as with the “Closed” setting, wherein the sound has more punch and with its added compression more closely creates the impression of the compressed air in a closed box, though with less brilliance and detail.

Speaker Voicing

This offers the choice of sound and attack characteristics from either alnico speakers (Sparky) or the British ceramic construction (Mellow). The “Sparky” setting produces a lively, more responsive sound with additional overtones, while the “Mellow” setting sounds warmer and softer.

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