Send me an e-mail and I'll send you the most recent
spec sheets and price list specs .With the carbone spider , you
have a fs of 27hz. The Fertin 20s with old spider (not carbone)
had a fs of 42.
The correction that Cherels makes ; you should get the
info and hear....Yes, yes try it....
spec sheets and price list specs .With the carbone spider , you
have a fs of 27hz. The Fertin 20s with old spider (not carbone)
had a fs of 42.
The correction that Cherels makes ; you should get the
info and hear....Yes, yes try it....
HI
I have the most recent spec sheets and price list specs !!
Fs 42hz 323€
Fs 27hz 456€
the end
--------------------------------------------------------------------------------
My supravox are on the way ,7 day max ,any suggestion on alternative baffle ?
I have the most recent spec sheets and price list specs !!
Fs 42hz 323€
Fs 27hz 456€
the end
--------------------------------------------------------------------------------
My supravox are on the way ,7 day max ,any suggestion on alternative baffle ?
No, the carbon spider is only 18.80 extra from the 323euro.
Supravox is a good driver; just wanted to precise some
info about the fs-qts-open-baffle.....
Supravox is a good driver; just wanted to precise some
info about the fs-qts-open-baffle.....
''any suggestions about alternative baffle''.
As for the baffle construction; we must try to minimized the
raisonance of the baffle and the reflection coming from a wide
baffle and the refraction from the edge.
Making a baffle that avoid raisonance, is building one that
is sturdy, won't vibrate. Fertin uses a 32inchX48inch rectangular
baffle , filled with sand. That would bring the baffle set cut off
at around 126hz: wider the lower lf you get. But here forget
low bass frequency with high spl. You have except everything
from a 8 inch, but you can achieve good bass and a nice
quality bass. Having the baffle to the floor and your listening
distance also helps.
You can also off-centered the driver on the baffle and suck the
driver in the baffle.
You can also decouple the driver form the baffle by mounting
the driver by the magnet.
You can also use a U baffle with wings filled with sand.
Open-up the wings and when you're finish you have a
relatively small speaker.
As for for an acrylic baffle; it looks very nice and should cost a
lot. Do You get a lot of reflection from the front and back
of the panel with acrylic.
With wood ; you can dampened the back with felt and
the front and cover it with a nice cloth; not costly but effective.
Another consideration is the placement of the baffle from
the back wall and the front wall. 4feet away each wall will help.
Also another consideraition is to adjust your room so it won't have
too much raisonance, without overdamping it. You need a
live room.
You can use some diffusor at the back
of the baffle and the back of the listener.
_open-baffle+full range+tube amp simple but a nice sound;
perfect no.... as for serious bass with open-baffle , that's
another thing.....
As for the baffle construction; we must try to minimized the
raisonance of the baffle and the reflection coming from a wide
baffle and the refraction from the edge.
Making a baffle that avoid raisonance, is building one that
is sturdy, won't vibrate. Fertin uses a 32inchX48inch rectangular
baffle , filled with sand. That would bring the baffle set cut off
at around 126hz: wider the lower lf you get. But here forget
low bass frequency with high spl. You have except everything
from a 8 inch, but you can achieve good bass and a nice
quality bass. Having the baffle to the floor and your listening
distance also helps.
You can also off-centered the driver on the baffle and suck the
driver in the baffle.
You can also decouple the driver form the baffle by mounting
the driver by the magnet.
You can also use a U baffle with wings filled with sand.
Open-up the wings and when you're finish you have a
relatively small speaker.
As for for an acrylic baffle; it looks very nice and should cost a
lot. Do You get a lot of reflection from the front and back
of the panel with acrylic.
With wood ; you can dampened the back with felt and
the front and cover it with a nice cloth; not costly but effective.
Another consideration is the placement of the baffle from
the back wall and the front wall. 4feet away each wall will help.
Also another consideraition is to adjust your room so it won't have
too much raisonance, without overdamping it. You need a
live room.
You can use some diffusor at the back
of the baffle and the back of the listener.
_open-baffle+full range+tube amp simple but a nice sound;
perfect no.... as for serious bass with open-baffle , that's
another thing.....
Sorry for asking a lot of questions, I am just trying to learn.
From a WAF stand point a large rectangular piece of wood in the middle of the room is not very welcome. How about other shapes, maybe the top edge can be a round instead of a straight edge. Can somebody throw some light on effect of baffle shape
What did you mean by such the driver in the baffle?
It is a lot of work to do this. Can somebody who has heard both coupled and decoupled baffles please comment on the differences in SQ
Thanks
Dinesh
Did you mean diffraction? How much does edge diffraction affect an OB speakers? Given that the baffle is just 3/4 to 1" thick. Can the edges be rounded over? Or should one keep them straight.lrntglls said:
From a WAF stand point a large rectangular piece of wood in the middle of the room is not very welcome. How about other shapes, maybe the top edge can be a round instead of a straight edge. Can somebody throw some light on effect of baffle shape
Filling baffle with sand is not for the wood working challenged, for that matter even the pros will have to sweat. I wonder about the cost effectiveness of this. Don't want to fall into AudioPhool traps.
What is the purpose of making the main driver off center? Is this a form of time aligning the upper and lower driver without resorting to moving them back / forth vertically?
What did you mean by such the driver in the baffle?
I have read decoupling the baffle from the driver and seen some (not so clear) pictures, can somebody point me to better pictures on how to do this?
It is a lot of work to do this. Can somebody who has heard both coupled and decoupled baffles please comment on the differences in SQ
I have not seen pics of a few but not many OBs with felt on the back. Can somebody please explain.
Thanks
Dinesh
-''How much does edge diffraction affect open-baffle?''
Open-baffle is an addition of small things that you must do
in order to get a good sound:choose the properdriver, baffle size,
construction and positioning of the baffles, room treatment,
and positioning of the listener.
Diffraction happens when the
waves changes medium: here, from a wood surface to free air.
How much does it affect the overall sound in itself compare to
the other aspect of ob? I haven't read anything that precise.
''From a WAF stand...
In open baffle it's the width that affect the baffle step cut off.
If you have only one driver; than the wider, the more bass
you get. A U baffle is much smaller ; you open the wings
when you listen to music. It might be more acceptable for
the lady. As for rounding the top, it may look nicer and round
the wings also.
''What is the purpose of making the driver off center..''
Read : www.muscandesign.com
www.dipoleplus.de/
I meant sink in the driver in the baffle as opposite to just
screw the driver on the baffle.
''I have read decoupling the baffle....''
If you build you baffle in a way as to reduce the vibration to
minimum (like filling with sand) then this is an extra measure
that you could do without. On many drivers, there are at the
back a hole and by putting a pole at the back , you can
attach the driver to the pole.
''With wood;...''
A large surface can be reflective; and this we don't want.
so wrap the baffle with a damping material and cover with
cloth;this will eliminate the reflection coming from the baffle.
We want the listener to hear the sound of the driver first
and reflection later. So using diffusor on the front and back
wall will delay those reflection.
Open-baffle is an addition of small things that you must do
in order to get a good sound:choose the properdriver, baffle size,
construction and positioning of the baffles, room treatment,
and positioning of the listener.
Diffraction happens when the
waves changes medium: here, from a wood surface to free air.
How much does it affect the overall sound in itself compare to
the other aspect of ob? I haven't read anything that precise.
''From a WAF stand...
In open baffle it's the width that affect the baffle step cut off.
If you have only one driver; than the wider, the more bass
you get. A U baffle is much smaller ; you open the wings
when you listen to music. It might be more acceptable for
the lady. As for rounding the top, it may look nicer and round
the wings also.
''What is the purpose of making the driver off center..''
Read : www.muscandesign.com
www.dipoleplus.de/
I meant sink in the driver in the baffle as opposite to just
screw the driver on the baffle.
''I have read decoupling the baffle....''
If you build you baffle in a way as to reduce the vibration to
minimum (like filling with sand) then this is an extra measure
that you could do without. On many drivers, there are at the
back a hole and by putting a pole at the back , you can
attach the driver to the pole.
''With wood;...''
A large surface can be reflective; and this we don't want.
so wrap the baffle with a damping material and cover with
cloth;this will eliminate the reflection coming from the baffle.
We want the listener to hear the sound of the driver first
and reflection later. So using diffusor on the front and back
wall will delay those reflection.
Thanks for the nice explanations, lrntglls.
It seems to me that diffraction affects OB more compared to a boxed speaker, because the wave from the front of the baffle and the back of the baffle coupled with both their diffraction waves come together at the edges. Maybe I am thinking about this too simplistically 🙂
Regards,
Dinesh
lrntglls said:
It seems to me that diffraction affects OB more compared to a boxed speaker, because the wave from the front of the baffle and the back of the baffle coupled with both their diffraction waves come together at the edges. Maybe I am thinking about this too simplistically 🙂
There is a lot of material there, I will read it all. 🙂
Somebody please point me to some clear pictures of sand filled baffles, just so I can understand how it is done.
Regards,
Dinesh
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