Power Output 600 Ohms?

adydula · 2714

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Offline adydula

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on: December 24, 2016, 04:04:24 PM
I have been looking for the actual power output the Crack w/Speedball can produce at 600 Ohms?
Is this published somewhere?

Thanks
Alex



Offline Tom-s

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Reply #1 on: December 24, 2016, 09:19:40 PM
+- 330mW if memory serves me correctly.
Mainline +- 600 mW



Offline adydula

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Reply #2 on: December 25, 2016, 03:29:29 AM
Thanks Tom,

I have seen it somewhere, but with all the stuff in these forums and the net I for the life of me could not find it!! Maybe its in my instruction kit manual!!

The reason I was asking I got a new set of the Beyer T1's 2nd gen(600 ohm) and I have to crank up the volume quite a bit compared to my Beyer T90s (250ohm) and was wondering
what the power output was. I know the cans impedance changes with frequency and the answer is this enough is more complicated that just measuement. But its something to compare
other thing with...

Merry Christmas!
Alex



Offline Paul Birkeland

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Reply #3 on: December 25, 2016, 06:05:42 AM
There's also overall sensitivity of the driver, which is most likely what you're experiencing.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline adydula

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Reply #4 on: December 25, 2016, 06:45:38 AM
This is from Beyers Site / Specs:

The T90s:

102 dB SPL at 500 Hz at 1 mW.
1 mW is 500 mV at 250 Ω, thus 1V is 4 mW or +6 dBm into 250 Ω, so 1V gives 108 dB SPL.

The T1's:

102 dB SPL at 500 Hz at 1 mW, which is 6 dB more than the DT880's 96 dB rating.
1 mW is 775 mV at 600 Ω, thus 1V is 1.67 mW or +2.2 dBm into 600 Ω, so 1V gives 104.2 dB SPL.

300mw produces a sound level of 126db /500hz, according to Beyer....seeing how 120db is "loud as a freight train"....if the crack puts out 330mw then we should be able to drive these T1's rather well, regardless of where the volume pot is sitting....me thinks!

Alex

Note: or is it time to build a mainline?
« Last Edit: December 25, 2016, 06:51:51 AM by adydula »



Offline Paul Birkeland

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Reply #5 on: December 25, 2016, 07:39:08 AM
The T1's:

102 dB SPL at 500 Hz at 1 mW,
1 mW is 775 mV at 600 Ω, thus 1V is 1.67 mW or +2.2 dBm into 600 Ω, so 1V gives 104.2 dB SPL.

300mw produces a sound level of 126db /500hz, according to Beyer....seeing how 120db is "loud as a freight train"....if the crack puts out 330mw then we should be able to drive these T1's rather well, regardless of where the volume pot is sitting....me thinks!
Yeah, the Crack can push out significant amounts of voltage, I'd say somewhere around 12-14V RMS into a 600 Ohm load.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man