Tapco T-231 user service T231 Features, Front Panel Features, EQ Sliders, Input Level

T•231 Features

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																														LEVEL
																													+12	+17
1																													1	HI-PASS LOW-PASS		BYPASS	RANGE
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																													-12					DUAL 31- BAND GRAPHIC EQUALIZER
						T•231									1															40Hz	16kHz	CLIP	6dB 12dB
		BY
																														HI-PASS	LOW-PASS	BYPASS	RANGE	ON
																													+12	+17				8
2																													2	0				OFF
																																		POWER
																													-12	40Hz	16kHz	CLIP	6dB 12dB
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FRONT PANEL FEATURES

The controls for Channels 1 and 2 are the same, so these descriptions apply to both channels.

1. EQ Sliders

When the EQ sliders are in the center position, they have no effect on the signal. Move a slider up or down to boost or cut a particular frequency by up to ±12 dB (±6 dB when the RANGE switch is set to 6 dB).

5. BYPASS

This button effectively disables the EQ circuits. You can use this button to compare the EQ’d signal to the unprocessed signal. When the BYPASS button is pushed in, the LED below the BYPASS button lights.

2. Input LEVEL

Use the Input LEVEL control to adjust the gain of the signal as it passes through the T•231. When the Input LEVEL control is in the center position, it provides no gain (unity gain). When the slider is all the way down the signal is off (-∞), and all the way up provides 17 dB of gain.

6. CLIP

This LED lights when the output signal is within 5 dB of clipping. It is okay if the CLIP LED blinks occasionally, but if it blinks frequently or stays lit all the time, turn down either the LEVEL control or the output signal from the mixer or other device immediately preceding the T•231.

3. HI-PASS

This button is used to roll-off the frequencies below

40 Hz. The LED below the button lights to indicate when the HI-PASS filter is turned on.

This is useful to reduce stage rumble (low-frequency noise from footsteps picked up by microphones on stage) and microphone-handling noise.

If the T•231 is used with monitor speakers, turning on this button can reduce the muddiness caused by the lows from the stage monitors feeding back into the main output through the microphones.

4. LOW-PASS

Use this button to roll-off the frequencies above

16 kHz. The LED below the button lights to indicate when the LOW-PASS filter is turned on.

This is useful to remove hiss and high-frequency noise from the signal.

7. RANGE

This determines the maximum boost and cut of the EQ sliders, either ±12 dB or ± 6 dB (pushed in). The corresponding LED below the RANGE button indicates the setting.

The 12 dB setting provides more boost and cut if it is needed for more drastic EQ requirements. The 6 dB setting provides less boost and cut, but allows you to fine tune the controls with more precision.

8. POWER

Use this switch to turn the T•231 on and off. The LED above the switch lights when the power is on.

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