http://cgi.ebay.co.uk/2-C-CORE-SPEAK...cmdZViewIte m

Description:

2 C CORE SPEAKER COUPLING TRANSFORMER 100W, Valve Tube Amp
( Double Coil, Single Core, "C" Core = Cut Core)

How this coupling transformer work
1. 7.2 ohm of output is easy to control 8 ohm speaker
2. 8.2 ohm of input stage is easy for amp cause the loading is not so
heavy and more Constance.
3. the back emf from the speaker is block by coupling transformer so
make the amp pay more effort on sound regeneration
4. the impedance from the speaker view to amp is become 7.2 ohm


--------------------------------------------------------------------------------

Specification:

Input : 8.2 ohm
Output:7.2 ohm



--------------------------------------------------------------------------------

Application:

Let the amp to Manage Speakers

"Andy Evans" wrote in message
oups.com...
http://cgi.ebay.co.uk/2-C-CORE-SPEAK...QQcmdZViewItem

Description:

2 C CORE SPEAKER COUPLING TRANSFORMER 100W, Valve Tube Amp
( Double Coil, Single Core, "C" Core = Cut Core)

How this coupling transformer work
1. 7.2 ohm of output is easy to control 8 ohm speaker
2. 8.2 ohm of input stage is easy for amp cause the loading is not so
heavy and more Constance.

I'd like to meet Constance, she must be sexy!

On 3 Dec 2006 04:10:50 -0800, "Andy Evans"
wrote:

http://cgi.ebay.co.uk/2-C-CORE-SPEAK...QQcmdZViewItem

Description:

2 C CORE SPEAKER COUPLING TRANSFORMER 100W, Valve Tube Amp
( Double Coil, Single Core, "C" Core = Cut Core)

How this coupling transformer work
1. 7.2 ohm of output is easy to control 8 ohm speaker
How would that be? If you want to control any sort of speaker, you
need a low output impedance - 7.2 ohms would imply virtually no
control - flapping all over the place, in fact.

2. 8.2 ohm of input stage is easy for amp cause the loading is not so
heavy and more Constance.

Barely any difference at all as seen from the amp - not worth the
change.

3. the back emf from the speaker is block by coupling transformer so
make the amp pay more effort on sound regeneration
No it isn't. The back EMF reaches the amplifier exactly as it does
without the transformer.

4. the impedance from the speaker view to amp is become 7.2 ohm

And?


--------------------------------------------------------------------------------

Specification:

Input : 8.2 ohm
Output:7.2 ohm



--------------------------------------------------------------------------------

Application:

Let the amp to Manage Speakers

All this is good for is DC isolation. And of course if this is for a
valve amp, there is already a transformer doing exactly that.

d

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

AW Barton wrote:
"Andy Evans" wrote in message
oups.com...
http://cgi.ebay.co.uk/2-C-CORE-SPEAK...QQcmdZViewItem

Description:

2 C CORE SPEAKER COUPLING TRANSFORMER 100W, Valve Tube Amp
( Double Coil, Single Core, "C" Core = Cut Core)

How this coupling transformer work
1. 7.2 ohm of output is easy to control 8 ohm speaker
2. 8.2 ohm of input stage is easy for amp cause the loading is not so
heavy and more Constance.

I'd like to meet Constance, she must be sexy!


It was all this talk of coupling that did it for you, wasn't it!

S.

Andy Evans wrote:

http://cgi.ebay.co.uk/2-C-CORE-SPEAK...QQcmdZViewItem


3. the back emf from the speaker is block by coupling transformer so
make the amp pay more effort on sound regeneration

What a load of nonsense.

Graham

What a load of nonsense. .

Yes exactly - I simply can't think what on earth would be the benefit!
As Don says - if it's a valve amp there's already a transformer.

On Sun, 03 Dec 2006 06:50:13 -0800, Andy Evans wrote:

What a load of nonsense. .

Yes exactly - I simply can't think what on earth would be the benefit!
As Don says - if it's a valve amp there's already a transformer.

Perhaps it is to add that nice bit of non-linearity to ss amps to make
them sound good... ;-)

--
Mick (Working in a M$-free zone!)
Remove blockage to use my email address
Web: http://www.nascom.info & http://mixpix.batcave.net

"Don Pearce" wrote in message


3. the back emf from the speaker is block by coupling
transformer so make the amp pay more effort on sound
regeneration
No it isn't. The back EMF reaches the amplifier exactly
as it does without the transformer.

I thought maybe someone invented one-way mutual inductance. ;-)

"mick" wrote in message
news
On Sun, 03 Dec 2006 06:50:13 -0800, Andy Evans wrote:

What a load of nonsense. .

Yes exactly - I simply can't think what on earth would be the benefit!
As Don says - if it's a valve amp there's already a transformer.

Perhaps it is to add that nice bit of non-linearity to ss amps to make
them sound good... ;-)


I'm sure there are quite a few sis amps that wouldn't take kindly to a
transformer on their output either.

Graham H

In article .com,
Andy Evans wrote:
3. the back emf from the speaker is block by coupling transformer so
make the amp pay more effort on sound regeneration

Ah. Must utilize the output coils of a hybrid. Unfortunately these block
the audio too...

--
*Time is fun when you're having flies... Kermit

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