Group Buy: LSK389 (Feb 2010) - diyAudio
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Old 14th January 2010, 06:41 PM   #1
sonidos is offline sonidos  United States
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Default Group Buy: LSK389 (Feb 2010)

Folks,

This group buy is for the Linear Systems LSK389 Low Noise Dual JFet.

I found out that I practically live in the backyard of one of the distributors for Linear Systems. I can get to their warehouse in 5 minutes by car. Some of you have expressed interest in the TO-71 version, B grade. This is rated at 6 - 12 ma Idss. There was a previous successful group buy started by Luvdunhill and some are keen to buy some more.

It will take 100+ to even sniff a discount. This would be my first group buy and I think for now it would be best to gauge interest to see if we have the numbers so that we meet the following conditions:

1. You end up paying less for it than if you had purchased them yourself.
2. I do NOT lose a penny on this. It would be my last group buy as my wife would kill me. I'm on a tight budget right now.
3. I will need to charge for the expense of shipping & materials. Also, Paypal fees. I helped Uriah Dailey with the last LDR group buy and shipping was under $3 for both domestic and international orders.
4. I am a fighter for good causes, so I will add a small amount for donation to diyAudio. I know for some this leaves a bitter taste, but alas, this site may get you these parts cheaper than if you bought them yourself. If a poor guy like me can donate, well....
5. I like beer, so for my work, I would like to come out a bit ahead on this.
6. Possibly, we will have to set min purchase quantity to meet our goal

If all this has not scared you away, then I will be posting a Google doc (with additional conditions )in the next day or so to gauge interest and I hope we can reach our numbers. I would like to try this little beauty. But just one of these buggers cost $7 and some change. Ouch!!! If you have questions, please post away or PM me.

If the numbers look good, I'll contact the distributor to make sure they have enough on hand...and with funds in hand...pick them up and start shipping sometime in February, probably mid to late February.

Last edited by sonidos; 14th January 2010 at 06:49 PM.
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Old 14th January 2010, 06:47 PM   #2
sonidos is offline sonidos  United States
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Default LSK389 datasheet link

http://www.linearsystems.com/datasheets/LSK389.pdf
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Old 14th January 2010, 11:02 PM   #3
cviller is offline cviller  Denmark
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Do you have an estimated price for those little critters?
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Old 14th January 2010, 11:29 PM   #4
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Default Lsj74

Hi Sonidos,

I think they have LSJ74, no ?!

Is it possible to get them too?

Thanks

eD
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Old 15th January 2010, 01:00 AM   #5
sonidos is offline sonidos  United States
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eddelarue - I will ask. I didn't see it on their website, but I've heard it doesn't hurt to ask!

cviller - I spent some time just throwing some rough figures together and if I set a requirement of 4 pcs., the delivered cost may run somewhere around $33 to $35 if we get over the 100 pc price break. I thought maybe cheaper, but looking at luvdunhill's thread, I almost left out the Texas state 8.25% sales tax.

I guess part of this depends on what is the popular quantity to buy for each member. I'll look at it closer tomorrow night or Saturday. Please let me know your thoughts. Thanks!
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Old 15th January 2010, 01:28 AM   #6
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well, I was thinking about starting up the group buy as well, but I was going to wait for the single p-ch parts. You will be able to negotiate a much better price if you open this up to all the various parts. I was able to for example get a flat price across all Idss grades. Next time you talk with Trendsetter, ask them about the p-ch parts. They know I'm waiting on those, so more pressure cannot hurt.
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Old 15th January 2010, 01:35 AM   #7
cviller is offline cviller  Denmark
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Default p-channel

Are you talking about these?
Attached Images
File Type: jpg jfet.JPG (302.9 KB, 855 views)
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Old 15th January 2010, 01:42 AM   #8
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Quote:
Originally Posted by cviller View Post
Are you talking about these?
yes I am. I'd recommend waiting until we can get these. You'll be able to leverage a better price on everything.
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Old 15th January 2010, 01:46 AM   #9
cviller is offline cviller  Denmark
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I think it will take a while still. I only got two as a sample and they were very vague about when they would be able to deliver more.
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Old 15th January 2010, 01:51 AM   #10
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Quote:
Originally Posted by cviller View Post
I think it will take a while still. I only got two as a sample and they were very vague about when they would be able to deliver more.
Agreed. I will personally hold out for these parts and then try my best to make these available here via a Group Buy. But perhaps there is interest in the mean time for the n-ch parts.
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