• These commercial threads are for private transactions. diyAudio.com provides these forums for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members, use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

Dutch Aleph-X parts groupbuy

Status
Not open for further replies.
Jump to Latest
S

Sander

Member
Joined 2004
#1
Hi,

There are lots of dutch people on this forum building (or intend to build) the Aleph-X amplifier. Maybe we can arrange a groupbuy so we can buy the audiophile parts together? I was thinking about the resistors, (source) caps, transistors, transformers etc. Maybe we can also get a good heatsink offer for example. Hope to hear from you!

Sander
 
#2
Hi Sander,


I was making some phone calls today.
I called Amplimo for 1000VA transformers, with a nice black aluminium round enclosure. 🙂 They call me back because the enclosure for 1000VA is not standard. Also I know these guys, maybe I can get some discount.

Also we can order from Farnell, the higher the quantity, the better the price.

I was also looking for heatsinks. I have found really nice ones for around 450 Watts, but they were 120 Euro's, yikes!
Also have a look at this:
http://www.conradheatsinks.com/products/single_f.html
Unfortunately their biggest heatsink is a little to small for my amp. I want to go with 25VAC, 16 FET's, 8A Bias.
I've send them an email to ask weither they ship to The Netherlands or not.


Have a nice day. 🙂
 
#3
Conrad does send to the netherlands. I was involved in an earlier attempt to buy heatsinks from down under, this was the offer I got:

>MF30-151.5 x 10 @ 42.90ea. 429.00
>Delivery (FedEx Air 3-4 days) 225.00
>Delivery discount to overseas - less 50% (112.50)
>Total
541.50 (EUR328.23)

Because of the weight 10 pieces is maximum to ship with fedex otherwise it will be by boat (which takes up to 6 months :bigeyes: )

Good luck on your attempt

Ralph
 
#5
DEF103

Duck-Twacy,

Thanks for the link. I have 8 pieces (250mmx300mmx84mm) of
this DEF103. Been saving them for a serious AX.
Couldn't find any info on them, so I did some measurements a
while ago.
Results are quite similar to the graph in your link.
These are anodized sinks (transparant)
Salvaged them from a scrap yard.

Regards.
 
#6
Duck-Twacy said:
Al eens bij Deltour geinformeerd?

bv
http://www.deltourheatsinks.nl/img/large/DEF103.JPG

of

http://www.deltourheatsinks.nl/img/large/DEF027.JPG

(oops forgot to write english 🙂 )
Click to expand...
Any idea what they cost?

I like the visual appearance of these better:
http://www.seifert-electronic.de/images/pics/kl-273z.gif
But they cost EUR120,- for 150mm length. 🙁
http://www.elincom.nl/

But with $112,50 delivery costs Conrad aint cheap either.


Caps for the power supply are expensive too. I've looked at Farnell and Conrad. Any other options? Is the brand important?

We could also buy IRF9610's together so we can match them nicely. 🙂
 
#10
I'm glad to see members interested in a dutch groupbuy! 🙂

I've found a dutch heatsink reseller nearby. It is Deltour and stationed in Amsterdam. The site is currently down, but I've seen useable heatsinks. When I know how many members are interested I'll ask for an quantum heatsink price.

www.deltourheatsinks.nl

Reichelt.de sells 800VA toroids. Do they look interesting to you?
Price: 55,80

800VA Reichelt Toroids

MOSFETS?

IRFP 044N 1.05/pc

IRFP 240 1.25/pc

Does somebody know a good audiophile passive component reseller nearby?

Offtopic: Pffff...Ik moet nodig weer eens oefenen met mn engels. 😉
 
#11
Sander,

Those MOSFET's are really cheap. I volunteer for matching them. 🙂

About the heatsinks for Deltour, these look interesting.
http://www.deltourheatsinks.nl/img/large/DEF113.JPG
Calling them tomorrow for a quote.
And these from Seifert:
http://www.seifert-electronic.de/images/pics/kl-273d.gif
Calling Clofis for a price.

At least that's what fits my amp. 🙄

We also need a good source for the caps for the power supply.
These look nice: http://nl.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=3607562&N=401
 
#13
Sander,

why not go for a European or even Worldwide Groupbuy for the MOSFETs ? The total quantity would shurely be much higher and the matching of the FETs could be closer.
Furthermore all lightweight parts are interesting for a big groupbuy in order to get lower quote.

Would be happy to jump on the groupbuy,
illusionxx
 
#17
@ The Judge:

Did you in the meanwhile heared anything from amplimo? Components from Farnell are pretty expansive and they haven't got any other audiophile qualified parts. So maybe whe need to buy them outside europe. (digikey / mouser for example).

I think it is best to buy the heatsinks in Holland. Shipment costs are enormous.

Capacitor brand seriously does matter. Unfortunately conrad hasn't got any "good" caps in stock. Those Panasonics @ farnell are pretty expansive, but they're also very good. (So I've heard) Does somebody know any good capacitors with reasonable prices? (screw-lock)

Yes, Transistor matching is indeed an advantage when we buy large quantities.

@ Duck Twacy:

Thanks for the links. Deltour is pretty nearby. So maybe I can get the heatsinks by car to decrease postal costs. This is a strong argument to buy them at Deltour, I think.

@ Illusionxx:

I'll think about an European groupbuy for the active/passive components. These parts should fit directly into your mailbox. Sending packages with components would be to expansive I think (toroids etc). Worldwide looks a bit risky to me. (disappearing packages for example)

I hope I didn't forget anything. 🙂 If I did ring a bell. 😛

Currently I'm searching for good Heatsink resellers... (Brrr...those are expansive :'( )
 
#18
There are a lot of choices to make when building an amp, and everybody has his budget. For example you can get cheaper transformers then the Amplimo's, but I like the round, black, metal case. And if the Panasonic caps are good, I will try to get them for a reasonable price.

There's a Panasonic office in Belgium, I could give them a call.
Farnell is expensive with everything, so it must be possible to get them cheaper.

I'm still doing a lot of reading about the Aleph-X. I will make a list of components that need to be of audiophile grade/high presision. I will post it here so we will get an better overview.
 
#19
Maybe this inet shop has some nice caps

http://www.herweijerelectronics.nl/shop/caps/elco.htm

(I mean the Kendeil and the Mundorf)

The Keindel site is off-line at the moment 😕 , Mundorf (= Krummer? http://www.krummer-kondensatoren.de/index.html ) info can also be found here http://audiohum.com/docs/mundorf/mundorf_cat_2004.pdf

On HTforum a guy was asking for the prices of 47000uF Krummers in Germany. Also I can ask more priceinfo from http://www.soundline.nl/soundline.html (who is a reseller of Mundorf en Kendeil). I know the owner quite well.

And ofcouse there is Schuro with its BC components 154 (if he still has them)
 
Status
Not open for further replies.
Top Bottom