Group Purchase for CineMag Input Transformers

[dr.strangelove3]

I'm in for two. If the price drops more perhaps four.

[Steve Eddy]

Originally posted by AndrewT
what price if you can get to 50 units?

50 pieces is $36.51 (by the way, this price as well as the 11-49 piece price I posted include the additional $1.50 for the 3/8" bushing option). Not a big difference. David says that they just don't jack the price up sky high for the smaller numbers.

Can you estimate postage to UK?

Sure. You want the estimate for 6 pieces? Just give me a city name and post code.

By the way, I plan to ship all orders via Unite States Postal Service either Priority Mail for domestic shipments or Global Priority Mail for overseas shipments.

I might go for 6 pieces to help you get there.

Okie doke. I'll put you down as "tentative."

Can you spoonfeed me with what is required at the output stage and the input stage at either end of this transformer?

As Bas has already pointed out, they like to see a 600 ohm or less source impedance and a 15k or greater load impedance.

I've driven them with source impedances as high as 1.2k without any problems though. High impedance 1:1 trannies like this have rather more wiggle room than some others such as step-up trannies.

se

[andyjevans]

I've just seen this and definitely interested - I'm in London UK. will try and give it closer attention tomorrow. Andy Evans

[Ciscokid]

Hi,

Anyone care to share how they plan to use these input tranys? Details?

Can they be used as an input phase spliter for a tube amp?

Best,
ck

[SY]

CK, if they're anything like the Jensens, they'll do very well as input phase splitters, giving you the additional versatility of being able to use balanced or unbalanced sources. The galvanic isolation is a bonus. To use them as input phase splitters, get some matched resistors at a value 1/2 the total desired secondary load. The balance will be as good as your resistor match.

[motherone]

Thanks for confirming that, SY... I figured they could be used as input phase splitters. Maybe someone can post a list of neat things these little guys can do on the wiki.

Thanks again to Steve for showing this inexpensive alternative. I've been interested in using input transformers lately for a few projects, and this seems like a great way to get some of them going.

If the QTY pricing goes down, I may be in for more.

[Ciscokid]

SY,

Thanks very much for the input. I trying to decide if I want to go this route or not.

Best regards,
ck

[Steve Eddy]

Originally posted by motherone
Maybe someone can post a list of neat things these little guys can do on the wiki.

Whew. That would take quite a while. I mean, these things can be used for everything from paperwights to defensive weapons.

If the QTY pricing goes down, I may be in for more.

Don't know if you saw my previous post, but the 50-99 piece pricing only drops the unit price by $1.75. So unless you're going to buy a dozen or so, it doesn't seem like much of a savings.

But hey, if we can get commitments for 50 pieces or more, all the better I suppose.

se

[Steve Eddy]

By the way, I've got some estimates on shipping. I forgot that I don't need a city or post code to get shipping rates for international shipments.

Although I'll charge postage for the exact weight, I did the estimating using 1 pound and 2 pound packages. The transformers I have on hand were custom made in C size cans (I wanted them to be the same size as a microphone trannie I was thinking of using them with) so they're a bit heavier than the actual 15/15Bs. These weigh just about 3 ounces.

1 pound to just about anywhere in Europe is $10.00. To Canada, $8.00.

2 pounds is $15.00 to Europe and $11.00 to Canada.

If you're getting just a pair of transformers, the shipping weight will be somewhat less than a pound so figure somewhat less than $10.00 and $8.00.

se

[Bas Horneman]

Steve would it be possible to get some other types as well? I am thinking about getting the cmmi-10c as well as a MC stepup transformer.