F5 pcb group buy...

[alazira]

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.

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?

 

[Peter Daniel]

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

 

[necplusultra]

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?

 

[dimkasta]

Hello again Peter.
I think it was asked again. Do you have any plans on making any Turbo v3 pcbs?

 

[necplusultra]

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?

 

[Peter Daniel]

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.

 

[Peter Daniel]

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 😉

 

[Sangram]

^^Please do. Waiting with bated breath.

 

[cmsajith]

Peter, Any update on the Turbo boards?

 

[huguesb]

Sent you the money!

 

[slungu]

Peter,

Price for the F5 stereo board alone is now CAD 15 or USD 18 ?

regards, Stefan

 

[intense-tavda]

F5

Sent you the money!

Hello Peter! I want to order two F5 boards and two PSU boards. Is that possible? And how should I pay, only via paypall? Thanks for your answer. Teake

 

[huguesb]

I received my boards, thanks Peter!

 

[intense-tavda]

Thanks Peter for your answer. Teake

 

[johnm]

My boards arrived a few days back Peter - many thanks! They look great!

- John

 

[m.massimo]

F5 board

Hello Peter, are your F5 boards still available?
Thanks.

 

[peters]

Hello Peter,

I also would like to buy a set of F5 boards if they are still available.

Thanks

 

[Dadbeh]

im in too