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SR707 & SR404 Gain

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charlynch View Drop Down
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    Posted: 10 November 2014 at 7:56pm
Hi,
Could someone please let me know the amplifier gain for C-Audio SR707 & SR404, I have spent ages trawling the web to no avail.
Cheers.
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boominbob View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote boominbob Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2014 at 4:01pm
This is all the info i have:

sr404 2x466w / 4
sr606 2x625w / 4
sr707 2x826w / 4
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Grubbah View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Grubbah Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2014 at 4:13pm
Originally posted by charlynch charlynch wrote:

Hi,
Could someone please let me know the amplifier gain for C-Audio SR707 & SR404, I have spent ages trawling the web to no avail.
Cheers.

Do you know the power and input sensitivity?
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simonp1100 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote simonp1100 Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2014 at 7:49pm
Input Impedance = 10K.
Sensitivity = +4db.

This applies to all ranges of SR amps.

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charlynch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote charlynch Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2014 at 4:49pm
Thanks for the help guys, would that make the amplifier gain 33.40 ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote simonp1100 Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2014 at 6:26pm
Hi, I am sure the gain works out at about 47 if my memory is correct.


Edited by simonp1100 - 26 November 2014 at 6:28pm
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Grubbah View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Grubbah Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2014 at 8:48pm
Simon is that +4dBU? (1.2V)

That would make the voltage gain around 34 no?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote simonp1100 Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2014 at 9:19pm
Looking at the circuit, the two feedback resistors for each channel are 47k & 1k, which sets the gain at 47 (approx). The spec says it's +4db (1.23 volts), so i assume there may be a small amount of tolerence.
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charlynch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote charlynch Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2014 at 4:00pm
Thanks
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Grubbah View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Grubbah Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2014 at 3:37pm
Originally posted by simonp1100 simonp1100 wrote:

Looking at the circuit, the two feedback resistors for each channel are 47k & 1k, which sets the gain at 47 (approx). The spec says it's +4db (1.23 volts), so i assume there may be a small amount of tolerence.


I get you

33.4db * 47...



Edited by Grubbah - 29 November 2014 at 4:23pm
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