[tubegarden]

Hi RATs!

So, yesterday I modified one of the two active A7 amps.

This morning, a familiar CD suddenly had a distinct background choir.

I don't care what allows such grand illusions to occur.

I just really dig the trip

Happy Ears!
Al

[Patrick Turner]

tubegarden wrote:

Hi RATs!

So, yesterday I modified one of the two active A7 amps.

This morning, a familiar CD suddenly had a distinct background choir.

I don't care what allows such grand illusions to occur.

I just really dig the trip

Happy Ears!
Al

Al, they moved you into a large cave to live.
You just hadn't noticed.....

Why you, you, ...cave man....


Patrick Turner.

[tubegarden]

Bret Ludwig wrote:
Patrick Turner wrote:
tubegarden wrote:

Hi RATs!

So, yesterday I modified one of the two active A7 amps.

This morning, a familiar CD suddenly had a distinct background choir.

I don't care what allows such grand illusions to occur.

I just really dig the trip

Happy Ears!
Al

Al, they moved you into a large cave to live.
You just hadn't noticed.....

Why you, you, ...cave man....

He has probably broken something and the distortion causes the
illusion. On another disc it will sound terrible.


Patrick Turner.


Hi RATs!

Gents, you may be right ... I just had a massive slab of turkey breast
on one of those little dinner rolls that only appear in late November,
and, the entire orchestra on this recording seems to be playing the
same piece. Oh, nevermind, a big band jazz piece just came on. I can
never tell if anyone is pulling my leg on those ...

And to all, a good night

Al

[Ian Iveson]

tubegarden wrote

This morning, a familiar CD suddenly had a distinct background
choir.

Angels?

cheers, Ian

[Andre Jute]

tubegarden wrote:
Hi RATs!

So, yesterday I modified one of the two active A7 amps.

This morning, a familiar CD suddenly had a distinct background choir.

I don't care what allows such grand illusions to occur.

I just really dig the trip

Happy Ears!
Al

When you finish soldering the amp, you want to clip off those ears on
your component leads, Al. They're antennae. You're listening to a
nearby radio station broadcasting good music.

Seriously, until I threatened to set the environmental inspectors on
them, the PA at a sports field about half a mile from where I live used
to be received loud and clear on my Quad ESL-63 even without an amp
plugged in, just as long as the speakers were on, which they are
7/24/365.25.

Among my test discs is Michael Vetter and the Overtone Choir singing in
a huge cave in France. Visitors chez Jute get this creepy feeling that
the ghostly music is coming from the walls, the very fabric of the
house. Especially when played through horns -- in fact, you know a good
horn by observing that music is not localized but all around you, that
it seems to roll inexhorably along the floor, the walls and the
ceiling. Vetter/Overtone/horns + four floors of winding stairwell can
easily cause ripples on the backs of the innocent. My family pretends
to be blase, of course. "Oh, Dad makes music like this every day."

Andre Jute
Visit Jute on Amps at http://members.lycos.co.uk/fiultra/
"wonderfully well written and reasoned information
for the tube audio constructor"
John Broskie TubeCAD & GlassWare
"an unbelievably comprehensive web site
containing vital gems of wisdom"
Stuart Perry Hi-Fi News & Record Review

[tubegarden]

Andre Jute wrote:
tubegarden wrote:
Hi RATs!

So, yesterday I modified one of the two active A7 amps.

This morning, a familiar CD suddenly had a distinct background choir.

I don't care what allows such grand illusions to occur.

I just really dig the trip

Happy Ears!
Al

When you finish soldering the amp, you want to clip off those ears on
your component leads, Al. They're antennae. You're listening to a
nearby radio station broadcasting good music.

Seriously, until I threatened to set the environmental inspectors on
them, the PA at a sports field about half a mile from where I live used
to be received loud and clear on my Quad ESL-63 even without an amp
plugged in, just as long as the speakers were on, which they are
7/24/365.25.

Among my test discs is Michael Vetter and the Overtone Choir singing in
a huge cave in France. Visitors chez Jute get this creepy feeling that
the ghostly music is coming from the walls, the very fabric of the
house. Especially when played through horns -- in fact, you know a good
horn by observing that music is not localized but all around you, that
it seems to roll inexhorably along the floor, the walls and the
ceiling. Vetter/Overtone/horns + four floors of winding stairwell can
easily cause ripples on the backs of the innocent. My family pretends
to be blase, of course. "Oh, Dad makes music like this every day."

Andre Jute
Visit Jute on Amps at http://members.lycos.co.uk/fiultra/
"wonderfully well written and reasoned information
for the tube audio constructor"
John Broskie TubeCAD & GlassWare
"an unbelievably comprehensive web site
containing vital gems of wisdom"
Stuart Perry Hi-Fi News & Record Review


Hi RATs!

No danger. The finest local RAD station broadcasts the Mozart Buffet
weekdays from 12 to 1. Wolfbang Amaduce Mo and his Contemporaries ...
calendars are really great for sorting music types ...

I do not make this Music, I invite it. Sometimes it comes, sometimes I
just stare into my coffee and sulk.

Tuners were great, until Big Brother caught on and started broadcasting
hundreds of varieties of loud, stupid insults, in Stereo

I remember when loud, stupid insults were rare enough to be noticed, if
not admired. Times change ...

Happy Ears!
Al

[Peter Wieck]

Andre Jute wrote:

When you finish soldering the amp, you want to clip off those ears on
your component leads, Al. They're antennae. You're listening to a
nearby radio station broadcasting good music.

This is unlikely. Not only does the *whatever* have to receive the
signal, but also rectify it at rF at a very high level and/or then
transform it to aF. This is vanishingly unlikely to happen as you
describe it, even with a strong MW/AM station nearby, and not at all on
FM.

Far more likely is that IF you accept a local station stepping on Al's
system, that there are some mechanical connections that have some
corrosion on them. Some salts do, in fact, rectify at rF frequencies
and do provide just enough modulation that a sensitive circuit on the
order of a magnetic phono or tape-head amp just might get some signal
at a level to able to be reproduced. So, check any rivets, tube pins,
RCA jacks & cables and so forth for signs of such corrosion. It does
not take much.

Now, and as it happnes, most of these artifacts occur from very strong
local interference. If you were a few miles from one of the former
500,000 watt Clear Channel stations as once were occasional in the US,
this was often a problem. Or, if one is around someone with a linear
amp (illegal) on their CB transmitter, or an gasoline engine is running
with unshielded, no-resistor plugs or an oil-burner ignition
transformer is going bad, fluorescent lamp ballast...

PA systems, perhaps if they are propagated via rF, though usually
modern systems us FM for the purpose, and again if there is sufficient
corrosion within their systems to cause them to transmit the same way.

But, radio-frequencies must first be received and rectified, then
somehow made into audio frequencies. This does not happen by an antenna
alone. Some sort of diode (crystal, salt crystal-corrosion) must exist
to make the transition. And keep in mind that copper-oxide rectifiers
are still in common use.

Peter Wieck
Wyncote, PA