Big Sub
 

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Stewart Pinkerton" wrote in message
...
On Mon, 4 Oct 2004 20:06:54 +0100, "Keith G"
wrote:

"Dave xxxxx" wrote in message
.co.uk...
http://www.royaldevice.com/custom3.htm


want two lol

Yep, I gotta admit it - that *is* impressive!!! :-)

Not really, as the system would have worked better as an infinite
baffle arrangement, avoiding the need for all that concrete. Nice
technobabble bull****, though.................


I trust fellow 'sportsmen' here will note that I don't take an easy
shot at this 'low bird'...... ;-)




Best easy shot is with a http://photogallery.net/sub.jpg big sub......


I've been contemplating building a sub, but not quite on this scale!!!
;-)



I remember an article in one of the UK mags some years ago, can't remember
which ... of a guy in Wales who specialised in concrete underfloor
subwoofer builds :-)


Yep, not uncommon it would seem and I was told recently that when central
heating started to become commonplace a number of 'audio buffs' converted
their chimneys into massive horn speakers...!!!???

Big Sub
 

"Keith G" wrote in message
...

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Stewart Pinkerton" wrote in message
...
On Mon, 4 Oct 2004 20:06:54 +0100, "Keith G"
wrote:

"Dave xxxxx" wrote in message
r.co.uk...
http://www.royaldevice.com/custom3.htm


want two lol

Yep, I gotta admit it - that *is* impressive!!! :-)

Not really, as the system would have worked better as an infinite
baffle arrangement, avoiding the need for all that concrete. Nice
technobabble bull****, though.................


I trust fellow 'sportsmen' here will note that I don't take an easy
shot at this 'low bird'...... ;-)




Best easy shot is with a http://photogallery.net/sub.jpg big sub......


I've been contemplating building a sub, but not quite on this scale!!!
;-)



I remember an article in one of the UK mags some years ago, can't
remember which ... of a guy in Wales who specialised in concrete
underfloor subwoofer builds :-)


Yep, not uncommon it would seem and I was told recently that when central
heating started to become commonplace a number of 'audio buffs' converted
their chimneys into massive horn speakers...!!!???



The driver/s at the chinney pot end?
Thats reminded me of one of my early DIY build speakers (full range) in
concrete pipes - sounded okay.
I thought I was daft building support towers etc. underfloor but now I feel
quite 'normal' after seeing that subwoofer build site :-)

Big Sub
 

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Stewart Pinkerton" wrote in message
...
On Mon, 4 Oct 2004 20:06:54 +0100, "Keith G"
wrote:

"Dave xxxxx" wrote in message
er.co.uk...
http://www.royaldevice.com/custom3.htm


want two lol

Yep, I gotta admit it - that *is* impressive!!! :-)

Not really, as the system would have worked better as an infinite
baffle arrangement, avoiding the need for all that concrete. Nice
technobabble bull****, though.................


I trust fellow 'sportsmen' here will note that I don't take an easy
shot at this 'low bird'...... ;-)




Best easy shot is with a http://photogallery.net/sub.jpg big sub......


I've been contemplating building a sub, but not quite on this scale!!!
;-)



I remember an article in one of the UK mags some years ago, can't
remember which ... of a guy in Wales who specialised in concrete
underfloor subwoofer builds :-)


Yep, not uncommon it would seem and I was told recently that when central
heating started to become commonplace a number of 'audio buffs' converted
their chimneys into massive horn speakers...!!!???



The driver/s at the chinney pot end?


So I gather, but this was from another Scot in whom I'm fast losing
faith.....


Thats reminded me of one of my early DIY build speakers (full range) in
concrete pipes - sounded okay.
I thought I was daft building support towers etc. underfloor but now I
feel quite 'normal' after seeing that subwoofer build site :-)


:-)

Big Sub
 

On Tue, 5 Oct 2004 12:04:21 +0100, "Keith G"
wrote:


"Stewart Pinkerton" wrote in message
.. .
On Mon, 4 Oct 2004 23:04:07 +0100, "Mike Gilmour"
wrote:


"Keith G" wrote in message
...

"Stewart Pinkerton" wrote in message
...
On Mon, 4 Oct 2004 20:06:54 +0100, "Keith G"
wrote:

"Dave xxxxx" wrote in message
.co.uk...
http://www.royaldevice.com/custom3.htm


want two lol

Yep, I gotta admit it - that *is* impressive!!! :-)

Not really, as the system would have worked better as an infinite
baffle arrangement, avoiding the need for all that concrete. Nice
technobabble bull****, though.................


I trust fellow 'sportsmen' here will note that I don't take an easy shot
at this 'low bird'...... ;-)

Best easy shot is with a http://photogallery.net/sub.jpg big sub......

When the not quite infinite baffles go down on that one, it leaves a
big hole in the ocean............. :-)

Shame that Keith doesn't understand cabin gain, and compression ratios
in horns, but then there's so much about audio that Keith obviously
doesn't understand......... :-)


No shame at all.

My 'audio learning curve' is not much longer than my subscription to this
group and I'm here to learn - never claimed any different and never made a
secret of it.

The real shame is that this group's not really up to it - all one can expect
here is an endless torrent of the same, meaningless, bigotted yap from a
very small minority (1.5 clowns) who have nothing useful to offer other than
pounce on every post and try to turn it into some sort of knob-waving
session. The biggest mystery to me is why do I continue to subscribe when,
even as I type, I have better things to do??? (A bit different in the
evening when I'm usually listening to music at the same time and I'm in the
mood for a litle mischief.... :-)

Thankfully, there are a multitude of seriously interesting and informative
sites on the Web like this one:

http://www.nutshellhifi.com/triode1.html

Read it carefully and you might learn something.

If you'll recall, my own suggestion for a *good* valve amp is a class
A triode P-P design.................

Of course, most of Olson's guff regarding actual *sound quality* in
that article is utter ********, since *any* decent SS power amp will
simply sound like its source component. All Olson is trying to do is
to get *back* to that sonic transparency under the handicap of using
valve technology. A fine aim for the curious hobbyist, but pointless
if you're just after a top-quality amplifier.

You will also see "Putting it less kindly, the good engineers went into the
commercial, instrumentation, and military sectors, while the not-so-good
engineers went into the high-fidelity business."

Thjat is indeed a very true statement, although the 'mainstream'
companies like Harman-Kardon, Meridian, Philips and Sony do have some
excellent engineers. I'm a military instrumentation guy myself.

Where does that leave
'self-styled wannabees' that are not 'engineers' at all, but work in places
like banks, sweeping up or whatever???

Ever wonder how Banks get all your statements and letters sorted out?
It's not a million clerks with quill pens, y'know! Well, maybe at
Coutts &Co................

We've just upgraded *some* of our kit at the shed where I work, cost
more than 7 million squids, paid for by you guys! :-)

(Out of interest, my brother is a real engineer who has worked in the
aerospace industry all his life - BAC/BAe and currently Matra Marconi......)

Out of interest, so did I until recently - Marconi Space and Defence,
Hughes Aircraft Company, and the Production Engineering Research
Association.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

Big Sub
 

On Tue, 5 Oct 2004 12:45:45 +0100, "Keith G"
wrote:

"Mike Gilmour" wrote in message
...

I remember an article in one of the UK mags some years ago, can't remember
which ... of a guy in Wales who specialised in concrete underfloor
subwoofer builds :-)

Yep, not uncommon it would seem and I was told recently that when central
heating started to become commonplace a number of 'audio buffs' converted
their chimneys into massive horn speakers...!!!???

IIRC, that was popularised by John Baldock in Hi-Fi News.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

Big Sub
 

On Tue, 5 Oct 2004 13:59:19 +0100, "Keith G"
wrote:

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

"Mike Gilmour" wrote in message
...

I remember an article in one of the UK mags some years ago, can't
remember which ... of a guy in Wales who specialised in concrete
underfloor subwoofer builds :-)


Yep, not uncommon it would seem and I was told recently that when central
heating started to become commonplace a number of 'audio buffs' converted
their chimneys into massive horn speakers...!!!???


The driver/s at the chinney pot end?

So I gather, but this was from another Scot in whom I'm fast losing
faith.....

IIRC, the driver was at the fireplace end, the chimney being used as a
B&W style tapered transmission line, rather than a horn. But it was a
long time ago, late '60s or early '70s I think.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

Big Sub
 

In message , Stewart
Pinkerton writes
IIRC, the driver was at the fireplace end, the chimney being used as a
B&W style tapered transmission line, rather than a horn. But it was a
long time ago, late '60s or early '70s I think.

Worked well with glass-fibre loft insulation stuffed up the chimney to
damp the resonances. A good location for a proper bass woofer if you
still happen to have the right chimney.

I've even got the ideal Goodmans Audiom 81 to use for it to keep it all
early-70s style! (As well as four Goodmans 301s for when I finally can
afford to buy a barn!)
--
Chris Morriss

Big Sub
 

"Stewart Pinkerton" wrote in message
...
On Tue, 5 Oct 2004 12:04:21 +0100, "Keith G"
wrote:


"Stewart Pinkerton" wrote in message
. ..
On Mon, 4 Oct 2004 23:04:07 +0100, "Mike Gilmour"
wrote:


"Keith G" wrote in message
...

"Stewart Pinkerton" wrote in message
...
On Mon, 4 Oct 2004 20:06:54 +0100, "Keith G"
wrote:

"Dave xxxxx" wrote in message
r.co.uk...
http://www.royaldevice.com/custom3.htm


want two lol

Yep, I gotta admit it - that *is* impressive!!! :-)

Not really, as the system would have worked better as an infinite
baffle arrangement, avoiding the need for all that concrete. Nice
technobabble bull****, though.................


I trust fellow 'sportsmen' here will note that I don't take an easy
shot
at this 'low bird'...... ;-)

Best easy shot is with a http://photogallery.net/sub.jpg big sub......

When the not quite infinite baffles go down on that one, it leaves a
big hole in the ocean............. :-)

Shame that Keith doesn't understand cabin gain, and compression ratios
in horns, but then there's so much about audio that Keith obviously
doesn't understand......... :-)


No shame at all.

My 'audio learning curve' is not much longer than my subscription to this
group and I'm here to learn - never claimed any different and never made a
secret of it.

The real shame is that this group's not really up to it - all one can
expect
here is an endless torrent of the same, meaningless, bigotted yap from a
very small minority (1.5 clowns) who have nothing useful to offer other
than
pounce on every post and try to turn it into some sort of knob-waving
session. The biggest mystery to me is why do I continue to subscribe when,
even as I type, I have better things to do??? (A bit different in the
evening when I'm usually listening to music at the same time and I'm in
the
mood for a litle mischief.... :-)

Thankfully, there are a multitude of seriously interesting and informative
sites on the Web like this one:

http://www.nutshellhifi.com/triode1.html

Read it carefully and you might learn something.

If you'll recall, my own suggestion for a *good* valve amp is a class
A triode P-P design.................



Interesting - a week or two ago 'Class A' was deemed to be a meaningless
distinction by a certain few here, I seem to recall.....

Big Sub
 

On Wed, 6 Oct 2004 01:23:21 +0100, "Keith G"
wrote:

I trust fellow 'sportsmen' here will note that I don't take an easy
shot
at this 'low bird'...... ;-)

Isn't that a Chavette?

If you'll recall, my own suggestion for a *good* valve amp is a class
A triode P-P design.................

Interesting - a week or two ago 'Class A' was deemed to be a meaningless
distinction by a certain few here, I seem to recall.....

Only in the context of Stereophile listings!
--

Stewart Pinkerton | Music is Art - Audio is Engineering

Big Sub
 

"Stewart Pinkerton" wrote in message
...
On Wed, 6 Oct 2004 01:23:21 +0100, "Keith G"
wrote:

I trust fellow 'sportsmen' here will note that I don't take an easy
shot
at this 'low bird'...... ;-)

Isn't that a Chavette?


Wasn't that a nasty little Vauxhall hatchback?