Search found 10 matches

by modern
Wed Nov 26, 2008 5:00 pm
Forum: Technical Discussion
Topic: Electro vs Non-electro Caps
Replies: 21
Views: 2932

Re: Electro vs Non-electro Caps

Andy,

Consider this an intervention.

I think you have been overusing and abusing elipsis "...".
by modern
Tue Nov 18, 2008 4:09 pm
Forum: Technical Discussion
Topic: help calculating bias resistor
Replies: 34
Views: 10517

Re: help calculating bias resistor

i would argue that doing calculations with improper measurements is in fact a bad way to ensure a couple of watts safety.

it is better to understand where the power is being dissipated.
by modern
Thu Nov 13, 2008 2:28 pm
Forum: Technical Discussion
Topic: reducing bass
Replies: 16
Views: 2522

Re: reducing bass

If it's not the bypass or coupling caps, try lower the bass side of your pickups.
by modern
Wed Nov 12, 2008 11:47 pm
Forum: Technical Discussion
Topic: reducing bass
Replies: 16
Views: 2522

Re: reducing bass

Kevin O'Connor has written a number of books that you might find helpful.

Try these two:

http://www.londonpower.com/catalog/prod ... ducts_id=3

http://www.londonpower.com/catalog/prod ... ducts_id=9
by modern
Wed Nov 12, 2008 6:34 pm
Forum: Technical Discussion
Topic: setting the dropping resistor in fixed bias -- ?
Replies: 18
Views: 3585

Re: setting the dropping resistor in fixed bias -- ?

Wayne,

I apologise, I didn't realise peak to peak had been brought.

I should have read JJman's post a little closer.
by modern
Wed Nov 12, 2008 6:19 pm
Forum: Technical Discussion
Topic: setting the dropping resistor in fixed bias -- ?
Replies: 18
Views: 3585

Re: setting the dropping resistor in fixed bias -- ?

But we weren't talking about Vpp (peak to peak) we were talking about Vp (peak).

Thanks for confusing the matter even more ...
by modern
Wed Nov 12, 2008 5:08 pm
Forum: Technical Discussion
Topic: setting the dropping resistor in fixed bias -- ?
Replies: 18
Views: 3585

Re: setting the dropping resistor in fixed bias -- ?

Skyboltone, We multiply peak voltages by 0.707 to obtain RMS voltages. Since the secondary voltages of power transformers is already given in V RMS, why are you multiplying it by 0.707? This transformer has secondary RMS voltages of 350-0-350, when the primary is 115 VAC. It will have a Vpeak of abo...
by modern
Wed Nov 12, 2008 12:22 am
Forum: Technical Discussion
Topic: setting the dropping resistor in fixed bias -- ?
Replies: 18
Views: 3585

Re: setting the dropping resistor in fixed bias -- ?

Why would you put a 1M in parallel with a 220K resistor?

If 180K is what you need in a circuit, put in a 180K resistor.
by modern
Tue Nov 11, 2008 8:44 pm
Forum: Technical Discussion
Topic: R/C values for cathode bias EL34's?
Replies: 9
Views: 1641

Re: R/C values for cathode bias EL34's?

Have a look at some datasheets.

The Philips Datasheet from 1969 for the EL34 seems like a good place to start and it's available at the Dr Tube website:

http://www.drtube.com/tubedata.htm
by modern
Fri Jun 06, 2008 5:13 pm
Forum: Technical Discussion
Topic: crnell plxi sevn
Replies: 11
Views: 2484

Re: crnell plxi sevn

Vnce,

My assmptn would be tht the Edge cntrl wrks mch lke a prsnce cntrl.

Art