I am getting a quote from Dyne Industries on 10mH laminate core inductors, there is a large price break if more than 50 inductors are ordered.
I have not received the quote as yet but are there any members here in Melbourne ( and other parts ) who need / want some LARGE value inductors who would like to join a group buy??
These will be wound on "E" cores with 1.6mm wire for DCR's in the order of 0.5 Ohms.
Regards Ted
I have not received the quote as yet but are there any members here in Melbourne ( and other parts ) who need / want some LARGE value inductors who would like to join a group buy??
These will be wound on "E" cores with 1.6mm wire for DCR's in the order of 0.5 Ohms.
Regards Ted
Price for singles will be about $60- each, I haven't yet heard back but as soon as I know I will post prices, they were going to give me prices on a purchase of 20 then 50, obviously the bigger the buy the cheaper the price. I need 4 of this size for current projects, and it's a common need for me, I was contemplating ordering 8 or 10 , but no break for such a small order.
Regards Ted
Regards Ted
Quick formula
F = XL / 2Pi L ( in Henries )
L = inductance
F = frequency
XL = nominal load in Ohms
First order 10 mH = 125 Hz at 8 Ohms, 62.5 at 4 ohms, I'm aiming nominal 2nd order 4R at 125 or baffle step on .5 woofer.
10 mH seems to me like a reasonable compromise.
I'd like to cross a little lower but keeping costs and DCR down this should work.
F = XL / 2Pi L ( in Henries )
L = inductance
F = frequency
XL = nominal load in Ohms
First order 10 mH = 125 Hz at 8 Ohms, 62.5 at 4 ohms, I'm aiming nominal 2nd order 4R at 125 or baffle step on .5 woofer.
10 mH seems to me like a reasonable compromise.
I'd like to cross a little lower but keeping costs and DCR down this should work.
Sorry Ted,Moondog55 said:
I've been a bit crook. I was only looking for 2, and I've currently got some that will do the job for the present. So I think I'll pass on your group buy at present.
I was going to upgrade later on to some 8.2 air core things (0.5 DCR - $85ea) - but I'll have to wait until I can afford the postage as they're over 3kg each.
I got talking to someone (Tony?) from Erse a while back and I've kept their site on my favourites ever since. It looks like it's $86.77 today - our dollar must have taken another hit!
This is the specific ai coil I was talking about, but they seem to have specials fairly often. If I didn't have some much stuff lying around, then I'd use Erse much more regularly. The caps seem to be good value also.
It looks like they have the same stuff that Parts Express have, but at a much cheaper price (I think when you make them, then that's probably easy).
This is the specific ai coil I was talking about, but they seem to have specials fairly often. If I didn't have some much stuff lying around, then I'd use Erse much more regularly. The caps seem to be good value also.
It looks like they have the same stuff that Parts Express have, but at a much cheaper price (I think when you make them, then that's probably easy).
Business must be good as the engineers at Dyne never got back to me with a price.
I may just have to find some formers and wind my own inductors or buy them from O/S myself.
With the currency playing ping-pong its a wonder theres any trade at all.
Sorry guy's but it looks like this one won't go anywhere.
I'm actually surprised at how cheap the wire is compared to the price of the product;-{0 I know it's all in the knowledge and set-up costs and labour.
regards
"Ted"
I may just have to find some formers and wind my own inductors or buy them from O/S myself.
With the currency playing ping-pong its a wonder theres any trade at all.
Sorry guy's but it looks like this one won't go anywhere.
I'm actually surprised at how cheap the wire is compared to the price of the product;-{0 I know it's all in the knowledge and set-up costs and labour.
regards
"Ted"
I just had a quote from "Tortech" in Sydney, 10 or 12mH cored cross-over inductors for a 4 X purchase $165 each plus postage.
haven't priced inductors for a while and the high price is why I bought my first active cross-over in the first place.
Guys I'm going to stay with active filtering
Regards
Ted
haven't priced inductors for a while and the high price is why I bought my first active cross-over in the first place.
Guys I'm going to stay with active filtering
Regards
Ted
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