Shure FP410 Specifications, Frequency Response controls centered, Voltage Gain, Output, Input

SPECIFICATIONS

Measurement Conditions (unless otherwise specified): Line

voltage 120 Vac, 60 Hz (FP410E: 230 Vac, 50/60 Hz); full gain;

1 kHz, one channel activated; output terminations: Line 600τ, Mic 150τ, Tape 50 kτ, Phones 200τ Εtip--sleeve and ring-- sleeve); Auto mode

Frequency Response (controls centered)

25 Hz to 20 kHz, +0.5,--2 dB (any input to any output)

Voltage Gain

					Output
Input		Line		Mic			Head-		Tape
							phone
Low--im-	93 dB			43 dB			97 dB		74 dB
pedance
mic
(150τ)
Line	42 dB			--8 dB			46 dB		23 dB
Monitor		—		—			9 dB		—
Inputs
			Impedance
								Input Clip-
		Designed			Actual (In-
Input		for use with				ternal)		ping Level
Mic		19--600τ				900τ			--15 dBV
Line		10 kτ				66 kτ			To >+26
									dBV
Monitor		1 kτ				25 kτ			+21 dBV
Outputs
			Impedance
									Output
		Designed			Actual (In-
									Clipping
Output		for use with				ternal)			Level
Mic		Any low--im-				0.5τ		--31 dBV (28
		pedance							mV) min.
		mic input
Tape		>10 kτ				1 kτ		--2 dBV (800
									mV)
Head-		8--200τ,				500τ		+6 dBV (2.0
phones		200τ rec-							V)
		ommended
Line		600τ				100τ			+19 dBm
								(6.9 V) min.

Total Harmonic Distortion (controls centered [5], +4 dBm at Line output)

0.25%, 50 Hz to 20 kHz

Hum and Noise
Equivalent Input Noise	--128.5 dBV
Equivalent Input Hum and Noise	--128.5 dBV

Output Noise (300 Hz to 20 kHz; channel controls full coun-

terclockwise)
Master full counterclockwise	--88 dBV
Master full clockwise	--71 dBV

Output Hum and Noise (20 Hz to 20 kHz; channel controls

full counterclockwise)
Master full counterclockwise	--74 dBV
Master full clockwise	--70 dBV
Common Mode Rejection
65 dB minimum with input of --20 dBV at 100 Hz

Polarity

Pin 2 of balanced inputs and outputs are in phase with tip connections of unbalanced inputs and outputs

Input Channel Activation

Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 msec Hold Time . . . . . . . . . . . . . 0.4 sec (switchable to 1.0 sec) Decay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 sec

Off-Attenuation

13 dB, fixed (switchable to )(single mixer; attenuation in- creases as additional mixers are linked)

Overload and Shorting Protection

Shorting outputs, even for prolonged periods, causes no damage. Microphone inputs are not damaged by signals up to 3 V; Line and Monitor inputs by signals up to 20 V

Low-Cut Filters

6 dB/octave rolloff below 170 Hz

Limiter
Threshold	+16 dBm (switchable to +8, +4, 0 dBm)
Attack Time	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 msec
Recovery Time . .	. . . . . . . . . . . . . . . . . . . . . . . . . 350 msec
Indicator	. . . . . . . Lights when limiting is occurring

Meter

VU Meter Calibration: 0 VU = +4 dBm (switchable to +8 dBm)

Peak Meter:

Rise Time: 2.0 msec time constant (0.9 msec/LED step)

Decay Time: 180 msec time constant (83 msec/LED step)

Tone Oscillator

1 kHz, 10%, THD <0.5%

Phantom Power

14 Vdc open--circuit, 1 kτ series resistance, input switches in Mic position only (internally switchable to 48 Vdc, 4.5 kτ series resistance)

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