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Old 24th April 2012, 06:57 PM   #701
alazira is offline alazira  United States
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Quote:
Originally Posted by AndrewT View Post
no.
the gain is set by the ratio of those resistors.

Changing both, as you have shown, leaves the ratio exactly the same, i.e. the gain is the same.

Quote:
Originally Posted by Nelson Pass View Post
Alternatively, you can increase the value of the Source resistors to 1 ohms,
and increase the value of the feedback resistors from 2 X 100 ohms and 10
ohms to 1 X 100 ohms and 22 ohms.

The lower amount of feedback will warm the sound up, and you can keep
increasing proportional values in the feedback loop if you wish.

Thanks Andrew,

I didn't realize that the feedback:source proportion sets the gain.

So is there any problem reducing the source resistor value to increase gain without warming up the sound?
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Old 25th April 2012, 02:06 PM   #702
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Quote:
Originally Posted by necplusultra View Post
is it possible to convert the pd f5 stereo boards to mono balanced and if so, how?
Same as it was done with F4 (page 7 of manual): http://firstwatt.com/pdf/prod_f4_man.pdf
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Old 25th April 2012, 03:14 PM   #703
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Thanks Peter.

plus/minus from balance input goes to left/right input of F5. I presume ground goes to star ground. Is there any other connection needed between the 2 boards?
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Old 25th April 2012, 06:23 PM   #704
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Hello again Peter.
I think it was asked again. Do you have any plans on making any Turbo v3 pcbs?
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Old 26th April 2012, 11:36 AM   #705
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greetings,

read the F4 manual again

still looking for answer to the balance mono connections:

+ output from balance goes to F5 + left
- output from balance goes to F5 + right
ground from balance input goes to ???


Does the ground of the balance input go to the star ground or is it left floating?
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Old 27th April 2012, 10:43 PM   #706
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Quote:
Originally Posted by necplusultra View Post
greetings,

read the F4 manual again

still looking for answer to the balance mono connections:

+ output from balance goes to F5 + left
- output from balance goes to F5 + right
ground from balance input goes to ???


Does the ground of the balance input go to the star ground or is it left floating?
The manual is very clear about it:

Pin 1 of the XLR connector is ground
Pin 2 is positive.
Pin 3 is negative.


So the ground of the balance input go to the star ground.
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Old 27th April 2012, 10:46 PM   #707
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Quote:
Originally Posted by dimkasta View Post
Hello again Peter.
I think it was asked again. Do you have any plans on making any Turbo v3 pcbs?
I started working on it in Feb, but somehow didn't feel motivated enough to finish seeing the other group buy. Now when I see how slowly it develops, I might as well finish what I started
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Old 28th April 2012, 06:17 AM   #708
sangram is offline sangram  India
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^^Please do. Waiting with bated breath.
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Old 26th June 2012, 03:22 PM   #709
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Peter, Any update on the Turbo boards?
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Old 30th July 2012, 03:19 PM   #710
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Sent you the money!
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