[Keith G[_2_]]

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Note also the weight on top of the speaker cabinets - have a friend who
stacks books on top of his speakers to eradicate cabinet resonances and
will try to find a pic (I know I've got one somewhere), but whether or
not that really wotks isn't important: my reason for heaping things on
top of speakers is simply lack of space and the speaker tops are*
somewhere handy to put stuff!!

Since it's impossible to make a totally rigid speaker cabinet some makers
take into account any 'output' from the cabinet itself. Think the first to
do this was the Spendor BC1. Which was designed to be mounted on an open
stand about 9" high. Adding mass to the cabinet - like putting books on
top - would negate the design theory.


The Rogers 'BBC Studio Monitors' I had here a while back were
'thinwall/resonating' types and sounded very good indeed, apart from the
rasping bass unit I couldn't cure - without spending a lot of money and
maybe changing the speakers characteristics too much, in any case....

[Dave Plowman (News)]

In article ,
Keith G wrote:
Since it's impossible to make a totally rigid speaker cabinet some
makers take into account any 'output' from the cabinet itself. Think
the first to do this was the Spendor BC1. Which was designed to be
mounted on an open stand about 9" high. Adding mass to the cabinet -
like putting books on top - would negate the design theory.


The Rogers 'BBC Studio Monitors' I had here a while back were
'thinwall/resonating' types and sounded very good indeed,

Probably the same family as the BC1 - from an original BBC design study.

apart from the
rasping bass unit I couldn't cure - without spending a lot of money and
maybe changing the speakers characteristics too much, in any case....

I suppose you tried inverting the driver?

--
*Few women admit their age; fewer men act it.

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

[Keith G[_2_]]

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
Since it's impossible to make a totally rigid speaker cabinet some
makers take into account any 'output' from the cabinet itself. Think
the first to do this was the Spendor BC1. Which was designed to be
mounted on an open stand about 9" high. Adding mass to the cabinet -
like putting books on top - would negate the design theory.


The Rogers 'BBC Studio Monitors' I had here a while back were
'thinwall/resonating' types and sounded very good indeed,

Probably the same family as the BC1 - from an original BBC design study.

apart from the
rasping bass unit I couldn't cure - without spending a lot of money and
maybe changing the speakers characteristics too much, in any case....

I suppose you tried inverting the driver?


Sure - first port of call after turning the whole box upside down; then I
tried all sorts of fiddling about before I spoke to DK Loudspeakers:

http://www.moirac.adsl24.co.uk/showntell/DSCN1476.JPG

[Dave Plowman (News)]

In article ,
Keith G wrote:
The Rogers 'BBC Studio Monitors' I had here a while back were
'thinwall/resonating' types and sounded very good indeed,

Probably the same family as the BC1 - from an original BBC design
study.

apart from the rasping bass unit I couldn't cure - without spending a
lot of money and maybe changing the speakers characteristics too
much, in any case....

I suppose you tried inverting the driver?


Sure - first port of call after turning the whole box upside down; then
I tried all sorts of fiddling about before I spoke to DK Loudspeakers:

http://www.moirac.adsl24.co.uk/showntell/DSCN1476.JPG

If it was like the original BC1, the actual power handling was very low.
About 25 watts. It was designed by the BBC for use where high monitor
levels wouldn't be needed - and attempts at that wouldn't work as the BBC
ones had built in amps. Spendor very soon upgraded the bass units to
handle 50 watts.

--
*Gaffer tape - The Force, light and dark sides - holds the universe together*

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

[Keith G[_2_]]

"Dave Plowman (News)" wrote in message
...
In article ,
Keith G wrote:
The Rogers 'BBC Studio Monitors' I had here a while back were
'thinwall/resonating' types and sounded very good indeed,

Probably the same family as the BC1 - from an original BBC design
study.

apart from the rasping bass unit I couldn't cure - without spending a
lot of money and maybe changing the speakers characteristics too
much, in any case....

I suppose you tried inverting the driver?


Sure - first port of call after turning the whole box upside down; then
I tried all sorts of fiddling about before I spoke to DK Loudspeakers:

http://www.moirac.adsl24.co.uk/showntell/DSCN1476.JPG

If it was like the original BC1, the actual power handling was very low.
About 25 watts.


Yes, exactly so:

http://www.moirac.adsl24.co.uk/shown...ogersLabel.JPG