"Phil Allison" wrote in message
...

"Andy Evans is Totally Brain Dead "


I'm using an Amphenol AP connector because it's rated 660v.


** Fraid the maker says the connector is only *safe* for 50 volts.

http://www.amphenolaudio.com/catalog.../page77_78.pdf


It says:

"Not suitable for domestic applications above 50V".

This is because it is possible to touch the female contacts with a bit of
wire or something, which is the sort of thing an unsupervised child might
do. If there is no possibility of the uncoupled connector being accessed
when powered is applied, then this restriction does not apply.

David.

"David Looser is a ****ING LIAR !!!"

"Andy Evans is Totally Brain Dead "


I'm using an Amphenol AP connector because it's rated 660v.


** Fraid the maker says the connector is only *safe* for 50 volts.

http://www.amphenolaudio.com/catalog.../page77_78.pdf


It says:

"Not suitable for domestic applications above 50V".

This is because it is possible to touch the female contacts with a bit of
wire or something,


** ABSOLUTE ****ing ******** !!!!!!!!!!!!!!!!!!!!!!!

Anyone can poke a bare wire into a mains outlet and get fried.


If there is no possibility of the uncoupled connector being accessed when
powered is applied, then this restriction does not apply.


** ****ING BULL**** !!!

The 50 volt restriction is because the connector IS UNSAFE for use with
higher voltages.



...... Phil

The 50 volt restriction is because the connector IS UNSAFE for use with
higher voltages.

..... Phil

Depends what your definition of "unsafe" is. The very same XLR
connectors started life with around 300v rating which they're clearly
capable of and now end up with 50v rating. So the definition of
"unsafe" doesn't refer to working voltage so much as usage. In
addition, there clearly seem to be categories of voltage ratings -
50v, 250v, 300v and such. Connectors aren't rated individually except
for industrial usage.

Best of luck finding a connector which *is* rated for 500V in domestic
use! (Dave Looser)

Yes, exactly. I frankly don't think they exist. Please tell me if they
do! There's a whole raft of industrial connectors but that seems to be
a whole other category of usage.

Reason for two chassis is:
a) Keep noise out of signal chassis - SETs are used by people with
high efficiency speakers.
b) You can't carry an amp with all directly heated triodes. There are
separate DC filament supplies for each DHT. For a three stage SET amp
that's 6 supplies plus heat sinks. For a PP amp it's worse still. Try
lifting that lot of transformers. Two monobloks are possible but
potentially noisy with DHTs and in any case who wants to construct two
HT supplies when one will do.

andy

On Sun, 4 Oct 2009 05:07:58 -0700 (PDT), Andy Evans
wrote:

The 50 volt restriction is because the connector IS UNSAFE for use with
higher voltages.

..... Phil

Depends what your definition of "unsafe" is. The very same XLR
connectors started life with around 300v rating which they're clearly
capable of and now end up with 50v rating. So the definition of
"unsafe" doesn't refer to working voltage so much as usage. In
addition, there clearly seem to be categories of voltage ratings -
50v, 250v, 300v and such. Connectors aren't rated individually except
for industrial usage.

Best of luck finding a connector which *is* rated for 500V in domestic
use! (Dave Looser)

Yes, exactly. I frankly don't think they exist. Please tell me if they
do! There's a whole raft of industrial connectors but that seems to be
a whole other category of usage.

Reason for two chassis is:
a) Keep noise out of signal chassis - SETs are used by people with
high efficiency speakers.
b) You can't carry an amp with all directly heated triodes. There are
separate DC filament supplies for each DHT. For a three stage SET amp
that's 6 supplies plus heat sinks. For a PP amp it's worse still. Try
lifting that lot of transformers. Two monobloks are possible but
potentially noisy with DHTs and in any case who wants to construct two
HT supplies when one will do.

andy

You aren't using the chassis for signal grounds, I hope? For least
noise you need to be carrying your grounds to a single star point,
which then connects to the chassis at a single point. That makes sure
that ground currents can't generate any voltages in the signal path.
Careful ground design allows you to use a single chassis quite
happily.

Anyway, valve amps are meant to sound a little bit "alive" with no
signal. It is a sort of tradition.

d
--
Pearce Consulting
http://www.pearce.uk.com

For least noise you need to be carrying your grounds to a single star point,
which then connects to the chassis at a single point. That makes sure
that ground currents can't generate any voltages in the signal path.
Careful ground design allows you to use a single chassis quite
happily.


Exactly as you describe!

andy

On Sun, 4 Oct 2009 08:43:46 -0700 (PDT), Andy Evans
wrote:

For least noise you need to be carrying your grounds to a single star point,
which then connects to the chassis at a single point. That makes sure
that ground currents can't generate any voltages in the signal path.
Careful ground design allows you to use a single chassis quite
happily.


Exactly as you describe!


Brilliant, then just bolt them together and hard wire the connection.

d
--
Pearce Consulting
http://www.pearce.uk.com

On Oct 4, 5:52 pm, (Don Pearce) wrote:
On Sun, 4 Oct 2009 08:43:46 -0700 (PDT), Andy Evans

wrote:
For least noise you need to be carrying your grounds to a single star point,
which then connects to the chassis at a single point. That makes sure
that ground currents can't generate any voltages in the signal path.
Careful ground design allows you to use a single chassis quite
happily.

Exactly as you describe!

Brilliant, then just bolt them together and hard wire the connection.


I'll employ you to lift it!

andy

"Andy Evans" wrote

b) You can't carry an amp with all directly heated triodes. There are
separate DC filament supplies for each DHT. For a three stage SET amp
that's 6 supplies plus heat sinks. For a PP amp it's worse still. Try
lifting that lot of transformers. Two monobloks are possible but
potentially noisy with DHTs and in any case who wants to construct two
HT supplies when one will do.



You could also ask Phil Thingy (?) at Bluebell Audio:

http://www.bluebellaudio.com/

Last I heard he was into ersatz copies of big 2 and 3 part amplifiers and
may have a solution or suggestions for you..??

"Andy Evans = another 100% AUTISTIC RETARD "


The 50 volt restriction is because the connector IS UNSAFE for use with
higher voltages.


Depends what your definition of "unsafe" is.


** Not my definition - you ****ing pig ignorant pommy ****head.


The very same XLR
connectors started life with around 300v rating which they're clearly
capable of and now end up with 50v rating.


** The published voltage figures change with the CONTEXT !!

IGNORANT ****WITS like this vile Evans congenital MORON

are * incapable* of comprehending the concept.

Or any other concept.



...... Phil

On Oct 4, 1:16 pm, "Phil Allison" wrote:
"Andy Evans = another 100% AUTISTIC RETARD "

The 50 volt restriction is because the connector IS UNSAFE for use with
higher voltages.

Depends what your definition of "unsafe" is.

** Not my definition - you ****ing pig ignorant pommy ****head.

The very same XLR
connectors started life with around 300v rating which they're clearly
capable of and now end up with 50v rating.

** The published voltage figures change with the CONTEXT !!

IGNORANT ****WITS like this vile Evans congenital MORON

are * incapable* of comprehending the concept.

Or any other concept.

..... Phil

I'll take that as a "no" then!