@kgrlee
Checked waterfall alternative to "periods".
With my ARTA there is no choice. Only between more frequency resolution or better resolution of the time domain at the cost of frequency response. Nice to see, never clicked that.
Here measurement same driver with smaller whizzer cone.
Bigger whizzer extends to 13khz. The smaller one only to 10khz and the frequency response is less smooth. The bigger whizzer seems to contribute to more dispersion of the mids.
Interesting waterfall with better time domain resolution it's easier to read.
Checked waterfall alternative to "periods".
With my ARTA there is no choice. Only between more frequency resolution or better resolution of the time domain at the cost of frequency response. Nice to see, never clicked that.
Here measurement same driver with smaller whizzer cone.
Bigger whizzer extends to 13khz. The smaller one only to 10khz and the frequency response is less smooth. The bigger whizzer seems to contribute to more dispersion of the mids.
Interesting waterfall with better time domain resolution it's easier to read.
Attachments
doing it again
diy whizzer cone prepared for glueing in
adding faraday ring with an Euro 50 cent piece to the pole plate
paper cone will be sandwiched with aluminium foil
https://www.diyaudio.com/community/...-concrete-loudspeaker-box.406856/post-7796513
diy whizzer cone prepared for glueing in
adding faraday ring with an Euro 50 cent piece to the pole plate
paper cone will be sandwiched with aluminium foil
https://www.diyaudio.com/community/...-concrete-loudspeaker-box.406856/post-7796513
I used to fly on a Sherpa with the Army. A Sherpa is nothing more than a flying Winnebago. It had a wizzer cone. I sprinkled several times over Austria. There was nothing for poopies though. You had to save that for later.
OP, I really like your experiments and DIY nature. Keep it up!👍
OP, I really like your experiments and DIY nature. Keep it up!👍
thank you!
These drivers - although very affordable - offer decent quality. I am really fond of them giving
mellow suspension
ventilation behind the yellow spider
low loss foam surround
together with the tweaks its acoustically a fine driver sounding far beyond its quirky diy look
These drivers - although very affordable - offer decent quality. I am really fond of them giving
mellow suspension
ventilation behind the yellow spider
low loss foam surround
together with the tweaks its acoustically a fine driver sounding far beyond its quirky diy look
update for diy full alu whizzer making:
had a perfect result minimizing resonances of the full alu whizzer with three more cuts and filled the gap with glue
Works nice!
had a perfect result minimizing resonances of the full alu whizzer with three more cuts and filled the gap with glue
Works nice!
looks now like this
just added two more slits to the double cone (and glueing) exploiting the headroom of the amplifier for adding more highs. (502 MT mini bluetooth amp Whuzi Audio).
Fully turned up there was still a bit too much highs and trading this for more damped whizzer cone area.
Up firing loudspeakers usually need off axis added tweeters (see Sonab type speakers).
I prefer to use amp power and EQ to correct the frequency response.
Decent result keeping point source advantage.
The up firing loudspeaker makes a nice big soundstage but still it sounds detailed and tonally correct due to naturally good step response of a real fullrange driver.
example classic sonab concept:
Fully turned up there was still a bit too much highs and trading this for more damped whizzer cone area.
Up firing loudspeakers usually need off axis added tweeters (see Sonab type speakers).
I prefer to use amp power and EQ to correct the frequency response.
Decent result keeping point source advantage.
The up firing loudspeaker makes a nice big soundstage but still it sounds detailed and tonally correct due to naturally good step response of a real fullrange driver.
example classic sonab concept:
test of whizzerizing a tweeter (!)
On listening this performs good.
Just cut a round puece of foil, take a segment out and glue together and on.
Thats the raw tweeter (its a mini loudspeaker with closed back side with silicone seal)
Don't ask for measurements, this is pure fun testing a diy tweet for an omni loudspeaker
As the construction is lightweight only a drop of glue fixes the foil
On listening this performs good.
Just cut a round puece of foil, take a segment out and glue together and on.
Thats the raw tweeter (its a mini loudspeaker with closed back side with silicone seal)
Don't ask for measurements, this is pure fun testing a diy tweet for an omni loudspeaker
As the construction is lightweight only a drop of glue fixes the foil
The mylar tweeter alone has a soft sound, it has its characteristic sound signature giving a "nice" presentation.
With the metal foil the diy tweet gets attack. And its much louder, must be due to the triple surface now radiating.
With the metal foil the diy tweet gets attack. And its much louder, must be due to the triple surface now radiating.
Preparing a 30cm bass driver for conversion to a fullrange driver. It will get a plastic whizzer cone from a bottle I will try it.
For above 5khz there will be a piezo driver.
The transparent design is attractive.
Will use a part from a bottle where the upper part is structured giving stability for free. Big difference to unstructured.
Its polypropylene, so sonically it should not ne bad.
for comparison the unstructured
For above 5khz there will be a piezo driver.
The transparent design is attractive.
Will use a part from a bottle where the upper part is structured giving stability for free. Big difference to unstructured.
Its polypropylene, so sonically it should not ne bad.
for comparison the unstructured
I will use silicone sealant as I do not have any other glue at hand.
But it will work.
The whizzer will be neatly fitted to the voicecoil - the smaller the gap and thinner the bonding film the better it will be.
This silicone will be used:
But it will work.
The whizzer will be neatly fitted to the voicecoil - the smaller the gap and thinner the bonding film the better it will be.
This silicone will be used:
Constrained Layer damping:
A hint I got here from the forum as a key to good sound from sandwich structure.
Now used silicone sealant for applying aluminium foil to the paper cone.
Finger snipping test shows enhanced damping due to the properties of the silicone.
Work goes faster than with the household glue I used usually.
A hint I got here from the forum as a key to good sound from sandwich structure.
Now used silicone sealant for applying aluminium foil to the paper cone.
Finger snipping test shows enhanced damping due to the properties of the silicone.
Work goes faster than with the household glue I used usually.
One advantage:
If the properties of the whizzer are not convincing the whizzer and the sealant will be easy removable.
If the properties of the whizzer are not convincing the whizzer and the sealant will be easy removable.
Yes, easily removed the diy polypropylen double/whizzer cone as in this box it was way too much mids.
Sounded ok, but not without correcting crossover network - so it was removed.
Sounded ok, but not without correcting crossover network - so it was removed.
Oh, I have a pair of Monacor SP-50X that started me out in this hobby. They have plastic whizzer cones as well. The main cone is paper. With EQ they sounded really good. Punchy bass, spacious midrange and treble.
if you really want a whizzer cone for high frequencies the metal whizzer beats the polypropylene whizzer.
(see previous post with experiment with polyprop from plastic bottle)
(see previous post with experiment with polyprop from plastic bottle)
@Ivo
I like the plastic whizzers in commercial ready made speakers.
This plastic is thin and lightweight but very stiff in relation to the mass!
I like the plastic whizzers in commercial ready made speakers.
This plastic is thin and lightweight but very stiff in relation to the mass!
What glue to use and at what frequency do you think they will play and the way it looks do the tip of the whizzer go in the voice coil
@L.rivera92172
yes, the tip will look a bit into the voice coil
I use household contact glue
I could measure the effect with and without whizzer
usually a whizzer works 5khz up, its not a big one
but it also helps to distribute mids and highs from the main cone to the side
yes, the tip will look a bit into the voice coil
I use household contact glue
I could measure the effect with and without whizzer
usually a whizzer works 5khz up, its not a big one
but it also helps to distribute mids and highs from the main cone to the side