Anyone interested in starting a group purchase for a Jensen input transformer?:
Jensen Input Transformer
Price breaks shown below:
********
JT-11P-1
1-3___ $70.00
4-11___$63.65
12-23__$59.20
24-47__$55.08
48-99__$51.23
********
Jensen Input Transformer
Price breaks shown below:
********
JT-11P-1
1-3___ $70.00
4-11___$63.65
12-23__$59.20
24-47__$55.08
48-99__$51.23
********
I forgot to add the option of a stud mount, shown here:
Transformer mounting option
After trying to mount the standard way, this looks like a worth while option.
Post here for your interest. I don't think there will be enough interest to start a WIKI. But if there is, we can make one later.
Transformer mounting option
After trying to mount the standard way, this looks like a worth while option.
Post here for your interest. I don't think there will be enough interest to start a WIKI. But if there is, we can make one later.
pinkmouse said:How big/heavy are these? Two heavy to ship to the UK economically?
They are pretty small. About 1 inch in diameter by 1 inch high, or so. Dimensions should be obtainable at Jensen site somewhere.
It looks like there's some interest here. I'm guessing about a dozen so far. I don't think the purchase would be worth the hassle until the 25 piece breakpoint, but we're half way there already. So maybe we should start a WIKI. Anyone know how to do this? It should include a preference for the mounting option.
pooge said:Pwer amp input. They like a 10K load, or desire a damping network if above 10K. A 10k load reflects to 13K on the primary input side.
Trying to understand - would you say this line transformer also works as a line filter for CMRR (?) and balanceing unbalanced signals???
please see attachment.
Attachments
YES. it's the best CMRR filter. It works at much larger common mode voltages than any practical balanced amp. But that is not really a big deal. It breaks ground loops and prevents DC input, it's biggest advantages. The rest is gravy. You can get ground loops in a stereo amp from the shield loop between right and left channels. There are way of connecting these to lower this, but the transformers do a lot of things in one package. It allows a balanced or unbalanced preamp to be connected without any extra circuitry.
"Balancing an unbalanced signal" is not how I'd put it. It can present a balanced interface for an unbalanced amplifier
"Balancing an unbalanced signal" is not how I'd put it. It can present a balanced interface for an unbalanced amplifier
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