Yet another thump problem. ;-)
 

On Thu, 2 Jun 2016 21:40:09 -0700 (PDT), Phil Allison
wrote:

Don Pearce wrote:



The Mosfet is ideal for that too. I modelled that on LTSpice, and it
looks perfect. Smaller devices with about 60mOhm channel resistance
are ideal - they have very low gate/channel capacitance and very
little of the operating pulse gets through. My model used a 1k
resistance in series with the signal followed by the Mosfet to ground.


** Cleary you have NOT modelled a scheme that mutes switch-on noises OR noises that occur after switch off.

NOR have you worked out how to avoid clipping the audio signal at 0.6V negative.

Read the link I posted and shut up.

These are details of particular designs, not reasons to ignore
Mosfets. If you can't find a circuit location where the signal does
not exceed 0.6V, just use a pedestal voltage. None of this is hard.

d

---
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Yet another thump problem. ;-)
 

Don Pearce = context shifting troll



** Cleary you have NOT modelled a scheme that mutes switch-on noises OR noises that occur after switch off.

NOR have you worked out how to avoid clipping the audio signal at 0.6V negative.

Read the link I posted and shut the **** up.



..... Phil

Yet another thump problem. ;-)
 

In article , Phil
Allison scribeth thus
Trevor Wilson wrote:



Got a sack of mini relays made by Pickering used by Neve and Audix if
you want a few, only problem is there're 24 volt ones....

Got loads of suitable relays here too.

Not a lover of relays in a signal path, though.

We had an inline monitoring 48/4/2 Neve at Thames with thousands of the
bloody things always giving problems. ;-)


**I'll bet they weren't decent, hermetically sealed, gold contact types,
nor were they used to short the signal to earth. If such relays are used
in that type of application, they almost never exhibit problems.



** Pickering (of the UK) relays are ALL reed types - so have glass encapsulated
contacts. They feature Mu-metal shielding and are rated for millions of
operations - certainly not a cheap component.

http://www.pickeringrelay.com/

They aren't, around 5 quid (10 AUS dollars) when i asked last, in small
quantities!..



Whenever I see a product with those clear topped, non-sealed DIL relays,
I know exactly what needs to be done. When the relay is replaced with a
proper one, I never see the job back. There are relays and there are
decent quality relays.

** The non sealed types I have come across develop bad contacts ( high
resistance) and cleaning them is PITA.

Agreed!...



.... Phil

--
Tony Sayer

Yet another thump problem. ;-)
 

Read this link and learn.

http://sound.westhost.com/articles/muting.html#s4

Useful site that:)



... Phil

--
Tony Sayer

Yet another thump problem. ;-)
 

In article ,
tony sayer wrote:

Read this link and learn.

http://sound.westhost.com/articles/muting.html#s4

Useful site that:)


Yes. I'm using their crossover on my modified 5/8s.

--
*WHY IS IT CALLED TOURIST SEASON IF WE CAN'T SHOOT AT THEM?

Dave Plowman London SW
To e-mail, change noise into sound.

Yet another thump problem. ;-)
 

ponent.

http://www.pickeringrelay.com/

They aren't, around 5 quid (10 AUS dollars) when i asked last, in small
quantities!..


Small word transposition there "Aren't they" of course...

--
Tony Sayer

Yet another thump problem. ;-)
 

In article , Dave Plowman (News)
scribeth thus
In article ,
tony sayer wrote:

Read this link and learn.

http://sound.westhost.com/articles/muting.html#s4

Useful site that:)


Yes. I'm using their crossover on my modified 5/8s.


Ain't 5/8'd anymore then;?....
--
Tony Sayer

Yet another thump problem. ;-)
 

In article ,
tony sayer wrote:
In article , Dave Plowman (News)
scribeth thus
In article ,
tony sayer wrote:

Read this link and learn.

http://sound.westhost.com/articles/muting.html#s4

Useful site that:)


Yes. I'm using their crossover on my modified 5/8s.


Ain't 5/8'd anymore then;?....

Just like they should have been made in the first place. Non of this
nonsense trying to get a 12" unit to work over 6 octaves. ;-)

--
*Microsoft broke Volkswagen's record: They only made 21.4 million bugs.

Dave Plowman London SW
To e-mail, change noise into sound.