hello,
i used the search but i did not found good links.
some time ago there was an woofer design thread and i got some info there but it is very hard to get more infos about spiders.
i am looking for overall diameter 6-8" and inner diameter from 2-3" deep roll design with around 5-7mm and width of 4-6mm each roll.
should be long throw and real polycotton or nomex types.
not these cheapies that make everything sound same or play only one frequency!! (you know what in mean!)
any links would be very helpful
THANX a lot.🙂 🙂
i used the search but i did not found good links.
some time ago there was an woofer design thread and i got some info there but it is very hard to get more infos about spiders.
i am looking for overall diameter 6-8" and inner diameter from 2-3" deep roll design with around 5-7mm and width of 4-6mm each roll.
should be long throw and real polycotton or nomex types.
not these cheapies that make everything sound same or play only one frequency!! (you know what in mean!)
any links would be very helpful
THANX a lot.🙂 🙂
means that most spiders are far away from what they should do.
the look might be ok but ,damping, linearity and xcursion capabilities or duration are BAD.
the look might be ok but ,damping, linearity and xcursion capabilities or duration are BAD.
hi
could you specify the kneck diameter you like , i think you need it for professional audio or car subs
i can send u what u need easily as i have a lot lying around
u will have to bear the postage from calcutta
i have nomex , fabric , treated , and silicone doped ones
deep rolled heavy duty linear coencentric spiders with 5 to 7 mm rolls
if you need progressive or regressive it will take time as i have to yet make those - but can be made on a bulk order
it will take some time as i am abroad now will be getting back 3 rd week of this month
suarnajan das gupta
transducer design engineer
could you specify the kneck diameter you like , i think you need it for professional audio or car subs
i can send u what u need easily as i have a lot lying around
u will have to bear the postage from calcutta
i have nomex , fabric , treated , and silicone doped ones
deep rolled heavy duty linear coencentric spiders with 5 to 7 mm rolls
if you need progressive or regressive it will take time as i have to yet make those - but can be made on a bulk order
it will take some time as i am abroad now will be getting back 3 rd week of this month
suarnajan das gupta
transducer design engineer
By damping do you mean mechanical lossiness (Rms) or springiness (Kms)? To increase linearity and excursion capability, you can use a larger spider with more rolls. About durability - most spiders fail from a loose joint of some kind, I believe. (I find it hard to believe a spider can rip)bassdabob said:
454Casull said:
I've seen a few subs with the spiders ripped, either right around the voice coil, or in a line from the center out,these were cheap chinese sourced units though...
Have you seen the new spider from adire that they have on parthenon? that looks pretty neat. I was thinking of experimenting with some DIY drivers myself and was thinking of making some spiders similar to those of the parthenon. For surrounds, I was thinking of making a mold and use hot glue as the actual material. Hot glue seems to be flexible enough, and easily shaped and molded. If I get something going with that I'll let you guys know how it turns out!
The spyder design on the audire extremis has some work left in it to get it right, yet. It is designed similar to a sub spyder,and has to ,well, be better designed and better implemented, iffi'n you knows what I means. Ie, one simple difference from the skannings, for example.. makes any observer aware the skanning is going t have less resonance issues and much, much lower failure rates.
I've got a dilemma. A serious one.
I can teach people how to make a better driver for me...but then..have them make it in a offshore (China) factory?
And then..the next time wround, ie, one year later, max..everyone else is using the same tricks? I mean, to have someone understand exactly what you are proposing, you ahve to explain the reasoning to them..so they 'get it'. When you do that, all proprietary understanding and prior effort in that direction tends to go out the window. The sad part, is many will copy a given desgin's components but won't even know why. And screw it up in the process. (Fine by me!)
Where's my advantage?
What would you do?
I've got a dilemma. A serious one.
I can teach people how to make a better driver for me...but then..have them make it in a offshore (China) factory?
And then..the next time wround, ie, one year later, max..everyone else is using the same tricks? I mean, to have someone understand exactly what you are proposing, you ahve to explain the reasoning to them..so they 'get it'. When you do that, all proprietary understanding and prior effort in that direction tends to go out the window. The sad part, is many will copy a given desgin's components but won't even know why. And screw it up in the process. (Fine by me!)
Where's my advantage?
What would you do?
hunter audio said:
I've been curious: are you responsible for those India made dynaudio/peerless/Morel-ish kinda 'knock off' drivers?
Someone in India is making them.....
KBK said:
Whos says there knock offs? lots of Big brands OEM in India
I source chassis and magnets from Turkey, Malaysia even Taiwan and China.
I could not afford to have everything made in Scotland, even my local factories like Tannoy source lots of labour and parts in Malaysia with there budget range totally made outside the UK.
Oh as for making a surround out of glue, it wont work well, a foam surround which looks old fashioned is still a personal favourit for me, hunt a foam surround down on Ebay 😉
hi
for your enquiry - i have my own hi - fi line up which is solely being supplied as oem - we design our own cones - own rubber surrounds ( from the mould upwards ) own spiders & chassis
most motor structures are sfg - with other designs as shorting rings - mass control rings etc as per application - in hi - fi
more over i am into professional audio with drivers mostly above 500 w rms ( sine ) rating - using all american / european soft parts including edge wound voice coils
those flimsy press steel - doped cone drivers which you are inquiring about are made by the following :-
cones - shiva ( india ) & jupiter (india)
the rubber surrounds of these are injection moulded in mumbai b
spiders - a mix bag - all indian
pole plates - common punched (press) - mild steel (not machined)
chassis - locally acquired from mumbai from various press steel workshops
magnet - gp - morris/ indian (which ever is available - y 30 and above )
the above parts are assembled by a company which was helped by peerless
to set up its plant and manufacturing unit - it is called peerless india
this includes the same type of speakers in various sizes upto a 2 inch mid range - with a rubber surround ?
pressed into application by indian manufacturers to emulate bose s cubes - the cone etc are all indian (same as above )
they are said to assemble - hi fi tweeters & some drivers for jpo & a few more cos
they also make entire finshed home theatre systems (speakers including enclosures) - on a oem basis & supply to the orderes warehouses
they have started assemling car audio neo drivers for the huge indian car market
there is another firm in india with similar 30 to 40 watt hi - fi , drivers -
the name of this company is iawai
iawai has similar drivers as that of peerless india & offer these as oem ,
both these companies are well established much more than mine , i have all the technical solutions but yet am small - without a web site etc - in the process of expanding - though my depth of products is very large
suranjan das gupta
transducer design engineer
for your enquiry - i have my own hi - fi line up which is solely being supplied as oem - we design our own cones - own rubber surrounds ( from the mould upwards ) own spiders & chassis
most motor structures are sfg - with other designs as shorting rings - mass control rings etc as per application - in hi - fi
more over i am into professional audio with drivers mostly above 500 w rms ( sine ) rating - using all american / european soft parts including edge wound voice coils
those flimsy press steel - doped cone drivers which you are inquiring about are made by the following :-
cones - shiva ( india ) & jupiter (india)
the rubber surrounds of these are injection moulded in mumbai b
spiders - a mix bag - all indian
pole plates - common punched (press) - mild steel (not machined)
chassis - locally acquired from mumbai from various press steel workshops
magnet - gp - morris/ indian (which ever is available - y 30 and above )
the above parts are assembled by a company which was helped by peerless
to set up its plant and manufacturing unit - it is called peerless india
this includes the same type of speakers in various sizes upto a 2 inch mid range - with a rubber surround ?
pressed into application by indian manufacturers to emulate bose s cubes - the cone etc are all indian (same as above )
they are said to assemble - hi fi tweeters & some drivers for jpo & a few more cos
they also make entire finshed home theatre systems (speakers including enclosures) - on a oem basis & supply to the orderes warehouses
they have started assemling car audio neo drivers for the huge indian car market
there is another firm in india with similar 30 to 40 watt hi - fi , drivers -
the name of this company is iawai
iawai has similar drivers as that of peerless india & offer these as oem ,
both these companies are well established much more than mine , i have all the technical solutions but yet am small - without a web site etc - in the process of expanding - though my depth of products is very large
suranjan das gupta
transducer design engineer
you underestimate hot glue.... tis not just any old glue. It is the rubberyiest of all, and quite strong i might add. I shall make some DIY passive radiators perhaps and try a hot glue surround... and ahh who knows what i should use for the spider.... I have an idea though.
hi
yes we do we manufacture the parts - , we make our own moulds for foam & rubber surrounds and make them to the shape and density / hardness we require ( as per customers requirement ),
and be with the cone manufactureres & have our own cones made - as we would like them - for eg , semi pressed , or non press / composite etc
we make our own mould s for spiders too - though - spiders are the easiest & cheapest here
we make our own moulds for gravity casting of alumunim chassis
motor structure is as per application
we wind our own coils - we do not wind edge wound coils
for professional audio driver above 500 w rms we use all soft parts from europe / usa including edge wound coils
suranjan
transducer design enineer
yes we do we manufacture the parts - , we make our own moulds for foam & rubber surrounds and make them to the shape and density / hardness we require ( as per customers requirement ),
and be with the cone manufactureres & have our own cones made - as we would like them - for eg , semi pressed , or non press / composite etc
we make our own mould s for spiders too - though - spiders are the easiest & cheapest here
we make our own moulds for gravity casting of alumunim chassis
motor structure is as per application
we wind our own coils - we do not wind edge wound coils
for professional audio driver above 500 w rms we use all soft parts from europe / usa including edge wound coils
suranjan
transducer design enineer
Hot glue can work for surrounds.... I am prototyping a few molds right now! As soon as I make one PERFECT* i shall take some pictures and start a DIY passive radiator thread
You might want to consider mold making latex instead of hot glue for your material.
AC Moore and other hobby/craft shops carry latex for $10 a pint.
Here is a webpage that deals with thick molds, just to let you see what latex looks like.
http://www.modeltrain.com/rubbermold/rubbermold.html
It is up to you how to make a mold, there are several ideas. One way-I guess, (I haven't done this myself yet), is to simply take loose piece of wood and route out a groove of the required diameter, then paint in the mold in several layers.
When it dries, I imagine it would be the strength and flexibility of a thick latex rubber glove, which I think would be close to the ideal for a surround.
AC Moore and other hobby/craft shops carry latex for $10 a pint.
Here is a webpage that deals with thick molds, just to let you see what latex looks like.
http://www.modeltrain.com/rubbermold/rubbermold.html
It is up to you how to make a mold, there are several ideas. One way-I guess, (I haven't done this myself yet), is to simply take loose piece of wood and route out a groove of the required diameter, then paint in the mold in several layers.
When it dries, I imagine it would be the strength and flexibility of a thick latex rubber glove, which I think would be close to the ideal for a surround.
Also, here is a page you should read about "cantilevering" if you plan to roll your own:
http://www.danmarx.org/audioinnovation/flatpassives.html
Also, Earthquake makes the SLAPS flat passive radiator. It's patent number is 06626263.
Just go to www.uspto.gov, and fill in the number.
Pay special attention to Image 18. You can see the space between the two surrounds is vented, with the exit hole on the inside f the enclosure. I think this eliminates irregularities to pressured from the flexing of the surrounds.
Just giving yoi some ideas here, since I was thinking of the same things myself.
http://www.danmarx.org/audioinnovation/flatpassives.html
Also, Earthquake makes the SLAPS flat passive radiator. It's patent number is 06626263.
Just go to www.uspto.gov, and fill in the number.
Pay special attention to Image 18. You can see the space between the two surrounds is vented, with the exit hole on the inside f the enclosure. I think this eliminates irregularities to pressured from the flexing of the surrounds.
Just giving yoi some ideas here, since I was thinking of the same things myself.
Adire Shiva Dealer in India?
Hi,
Is there a dealer for Adire Shiva in India? We have very stringent custom duty laws here in India which makes it difficult for a retail customer to procure it from outside India. Please let me know.
Hi,
Is there a dealer for Adire Shiva in India? We have very stringent custom duty laws here in India which makes it difficult for a retail customer to procure it from outside India. Please let me know.
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