| sbear |
I'm building two monoblock 100W Aleph-x and the only component I haven't sourced is the transformer. I'm planning on ordering a custom transformer from Plitron, Victoria Magnetics, or anyplace else that anyone can recommend.
Here are the specs I would like to shoot for:
Dual 18V secondaries
1000 VA (maybe 750VA if the cost is significantly lower)
Toroid of course!!
I have no idea what the cost, setup costs, or shipping will be (though ) since I haven't contacted any manufacturers yet. I just want find out how people might be interested before I start with the preliminary negotiations. BTW, I am planning on having these shipped direct from the manufacturer to the individual buyers.
If anyone wants a timetable on this, it's pretty open as I'm not in any real hurry to get this under way. I will probably order in early January, and I expect a lead time of 1-2 months.
Can't wait to hear from you all! |
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| jacco vermeulen |
18 volts secondaries for 750/1000 va will not be a standard production series with Plitron.
You will have to custom order it, i am curious what the price will be.
For reference, 18V is standard production in Europe, 800VA/18V is around $70 in Germany..
Maybe a number of people will be interested in custom ordered alloy toroid pans from the manufacturers in Toronto and Georgia.
Here in Europe they cant be had, i have been making them my self for 15y. |
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| kilowattski |
I am very interested. I got these two quotes from Victoria Magnetics.
| quote: | Hello Guy,
The transformers you are inquiring about are approx. 5.9" diameter, 3.6" height and weigh 13lbs. Cost of the transformers is $94.00 each and lead times are currently running 18-21 days. If you send me the "ship to" zip code I can give you an exact quote on shipping charges.
Regards,
John Snowden
Victoria Magnetics
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| quote: | Hello Guy,
Size for the 1kva version is approx. 6.4" in diameter and 2.625" in height, this is the next larger core size we use but is a bit lower profile. Cost for the transformer is $158.00 and shipping would be $15.54, shipping for the 750 watt would be $12.82, I quoted shipping cost for a pair.
Regards,
John Snowden
Victoria Magnetics
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If you got a few guys to go in on it the price would come down I am sure. |
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| Alain Dupont |
sbear,
I am too interested... about a group buy for toroids.... :bawling:
But for 2 monoblocs Aleph-X 40/80 watts
so 2 * 350VA Toroids Dual 15/16V AC secondaries ; dual 115 primary
Or a stereo Aleph-X 2* 40/80 watts
so 1 * 650/750 VA Dual 15/16V AC secondaries ; dual 115 primary
I have not decided IRFP240s or IRFP044 yet... {got both ...}
I want to use them for the ESL pannels of my ML Aerius i
and they go low 1.7 Ohms at >=15KHz
Regards.
Keep me informed. ;)
Alain. {Canadian} |
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| moe29 |
You won't get a price break with a group buy at Victoria Magnetics.
John sells them as cost effectively as he can for his operation already.
It's a small high quality operation - large numbers don't
equate to less expense.
I don't want to speak for him, but this subject has come up before.
VM's are all I use, the quality is excellent. If more than a few people
are going to order from VM, let John know you want the same
Aleph X transformer that Kilowattski (Guy) ordered.
Work on the chasis while you wait for the order to be filled :)
((i am in no way affiliated with VM))
(((i just use there transformers!))) |
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| sbear |
From the few replies so far, especially the qoutes that Kilowattski posted from Victoria Magnetics, I'm leaning toward the 750 VA, as opposed to the 1k VA. ($94 vs $158) The only question is 750 VA too much, about right, or not enough? Alain seems to think 350 VA is enough for 80W monoblocks. (If I read his post correctly!)
As far as voltage goes, I am still going for 18V secondaries; I know it seems a little high (I'm shooting for 22V rails) but I'd rather have some extra vs not quite enough.
So here is where I'm at:
Dual 18V Sec.
Dual 115V Primaries
750 VA
Keep the responses coming! |
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| kilowattski |
Moe,
Thanks for the vote of confidence. I have heard that VM was very good from many forum members.
Sbear,
I used the AXE-1 spreadsheet and for 100 watts it recommended a transformer between 528 VA and 792 VA. I figured 750 VA would give some safety factor. |
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| Joules |
| I mite be up for a few of those come January. That is if I can get in on the group buy of board from Kari or get some board from anywhere. |
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| bach2800 |
I too would be interest for a pair of 750VA
Thierry |
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| PierreQuiRoule |
sbear,
I am looking for a pair of toroids with the specs you described:
750 VA with dual 18V secondaries. This is for Aleph-X
monoblocks, 24-25 VDC rails. Thank you!
Pierre |
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