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Headphone Power...

chris226 9:49 PM - 22 April, 2011
What is the Max power output of the TTM 57SL's headphone jack, in mW?

I have a cheap set of headphones: 100 mW @ 32 ohms, and I'm wandering how easily the TTM57SL can damage them. Thanks. Chris
ninos 11:20 PM - 22 April, 2011
well, just turn up the headphone volume untill its loud and they dont distort :)
Rane, Support
Shaun W 3:54 AM - 28 April, 2011
This should help:
Quote:
TTM 57SL Specifications
Parameter : Specification : Conditions & Comments
Analog Inputs: 4 Stereo, Unbalanced RCA jacks:
..........Phono or line level input
..........Phono Response: RIAA ±1 dB, Gain: 30 dB at 1 kHz
..........Max input 133 mV
..........Input Impedance: 47.5k Ω, 200 pF
..........Line Gain: +15 dB to off @ 1 kHz
..........Auxiliary Input: Stereo Unbalanced RCA jacks
..........Gain: Off to +6 dB
FlexFX Return: Stereo Unbalanced 1/4" TS (tip-sleeve) phone jack
FlexFX Send: Stereo Unbalanced 1/4" TS phone jack
Mic Input: Active Balanced: 1/4" TRS (tip-ring-sleeve) phone jack
..........Input Impedance: 511Ω, each leg to ground
..........Gain: 50 dB 1 kHz
..........Frequency Response: 30 to 20 kHz +0, -3 dB, max gain
..........CMMR: >40 dB 1 kHz, max gain
..........S/N: 76 dB Re 0 dBFS, max gain, 20 kHz BW
..........Tone Controls: 2-Band
Master/Booth Outputs: Stereo balanced XLR/TRS jacks
..........Frequency Response 15 Hz to 20 kHz +0, -3 dB
..........THD+N <0.005% re 0 dBFS, 20 to 20 kHz, 20 kHz BW
..........S/N (balanced output) 102 dB re 0 dBFS, A-weighted
Auxiliary Output: Stereo Unbalanced RCA jacks
General Specifications:
..........Maximum Input (all inputs): 4Vrms
..........Maximum balanced output (main and booth): 8Vrms
..........Maximum unbalanced output (FlexFx and AUX): 4Vrms
..........Mixer digital audio: 24-bit, 44.1 kHz, 102 dB dynamic range
..........USB digital audio: 16-bit, 44.1 kHz, 102 dB dynamic range
..........Crosstalk: -75 dB re 0 dBFS, 1 kHz
Universal Power Supply: 100 to 240 VAC, 50 Hz to 60 Hz
USB Power: Mixer is self-powered.
Unit: Size: 13.3"H x 10"W x 3"D (33.8 x 25.4 x 7.7 cm)
..........Weight: 8.5 lb (3.8 kg)
Unit: Shipping Size: 7.75"H x 12.75"W x 19.25"D (19.7 x 32.5 x 49 cm)
..........Shipping Weight: 12 lb (5.5 kg)
Note: All specifications are typical unless otherwise stated.
chris226 8:55 PM - 1 May, 2011
Thanks Shaun. Actually, I had already read that in the manual. Does "Maximum unbalanced output (FlexFx and AUX): 4Vrms" apply to the headphone output as well? If so; that means the mixer could deliver up to 500 mW, to my 32 ohm, headphones, right?
Rane, Support
Shaun W 11:38 PM - 3 May, 2011
Quote:
Thanks Shaun. Actually, I had already read that in the manual.

I apologize, I thought the headphone specification of the TTM 57SL was listed individually.

Your numbers are correct, use the unbalanced output specs of 4Vrms, which will give you about half a watt or 500mWm, as you posted above :)
chris226 8:06 AM - 7 May, 2011
Thanks.