T and H pad Calculator
Unbalanced/balanced pads

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This JavaScript audio attenuator calculator will provide resistor values for unbalanced T-pads, and for balanced H-pads. Use the closest 1% tolerance resistors to the values shown. Attenuators beyond 40dB are not recommended. Type in the values for input impedance, output impedance and the desired attenuation then push the calculate button, and the results will show up in the tables below. Do not input data into the tables.

Input impedance of attenuator OHMS	Output impedance of attenuator OHMS	Attenuation required in decibels (1-40): dB
Console Out Tape/CD Deck Out Spkr Out Line Out	Console In Tape/CD Deck In Aux In Mic In	Common types (HOT)Line to Line (WARM)Line to Line (HOT)Line to Mic (WARM)Line to Mic Spkr to Line Spkr to Mic

Scroll down to see results

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T (UNBALANCED) PAD RESISTOR VALUES - RESULTS

OHMS		OHMS
Input Impedance OHMS	OHMS	Output Impedance OHMS

H (BALANCED) PAD RESISTOR VALUES - RESULTS

OHMS		OHMS
Input Impedance OHMS	OHMS	Output Impedance OHMS
OHMS		OHMS

 

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