Have them in hand, should have asked this first but, having the same case, do they, like the mosfet pucks not need insulation, only paste?
Also, will the perforated inner floor of the Deluxe 5U case sufficient for heat sink purposes, or do they need to be on a heat sink?
Thanks,
Russellc
Russell, looking at the picture, unless I am missing something, I believe he is just saying that it is a XLR (Balanced) input. So you do not necessarily need a balanced preamp. The amp itself is not balanced. It would need two more output devices to make the quadrants needed to be a truly balanced design.
Although a balanced pre would be fun.
The BA3B is pretty interesting. Consider the 313/2013's if you are going that route. They sound nice. There is the F5X which I believe has been implemented as a headphone or preamp as well. That one looks nice. Then there is the Iron Pre, the pumkin, the turtle etc... So many neat options.
Although a balanced pre would be fun.
The BA3B is pretty interesting. Consider the 313/2013's if you are going that route. They sound nice. There is the F5X which I believe has been implemented as a headphone or preamp as well. That one looks nice. Then there is the Iron Pre, the pumkin, the turtle etc... So many neat options.
Mike,
looking at the input stage I think (and ZM says too) it has a real balanced input, and can also be used as SE, when neg. input is grounded. But ZM will surely correct us.
looking at the input stage I think (and ZM says too) it has a real balanced input, and can also be used as SE, when neg. input is grounded. But ZM will surely correct us.
speaking of any diode bridge- Modu base plate is good enough (even if steel, due to enough area), just use thermal paste and don't forget split washer under nut
IXYS bridges are (normally) having base plate insulated from diodes, so no isolator sheet needed
funny scenario - even intentionally - how could designer decide which of 4 diodes to connect electrically with bottom of case ?
Oh. I saw one board in each mono block, heatsink on each side. Repeat for the other mono block so figured each mono was balanced like with the bba3 mono blocks.
Figured if it's going to be balanced, may as well do the pre too!
Russellc
For the front stage to be balanced, wouldn't it have to put out a +phase and -phase into the output stage? It looks like one trace going from the output of Q1 and Q2 into the output stage. Maybe I am wrong too and Zen Mods tricks go right over my head. lol
thingie (Babelfish XA252) is having bal input FE and regular simple Push-Pull OS
when speaking of OS itself, things are usually clearer if we use "bridged" instead of "balanced", as term
when speaking of OS itself, things are usually clearer if we use "bridged" instead of "balanced", as term
If I don't ask where I don't know, I'm liable to release the smoke! Of course there is learning from smoke. I figured it would be sufficient speaking of inner floor of case, just remember my first FirstWatt clone build F5. I used individual rectifiers four on each, all 16. Installed them all, then discovered that each piece needed to have insulation pad.speaking of any diode bridge- Modu base plate is good enough (even if steel, due to enough area), just use thermal paste and don't forget split washer under nut
IXYS bridges are (normally) having base plate insulated from diodes, so no isolator sheet needed
funny scenario - even intentionally - how could designer decide which of 4 diodes to connect electrically with bottom of case ?
Russellc
Well, I am confused about two channels in each mono block then. Not for now anyway, I haven't got the "regular" version running yet!
Russellc
It's confusing to me b/c people often use balanced / differential / bridged interchangeably, and they are not.
Are you referring to post #1260? If so, where do you see two channels per chassis? Monoblocks are mentioned, but I don't see mention of two channels per chassis.
Are you referring to post #1260? If so, where do you see two channels per chassis? Monoblocks are mentioned, but I don't see mention of two channels per chassis.
1260, first sentence. Answer "balanced" in 1264
Maybe I misread or mis understood? Quite possible!
Russellc
Maybe I misread or mis understood? Quite possible!
Russellc
Well, I think my brain is transposing BBA3 info, with xa 252 info. With BBA3, each board is 2 channels, not case with xa 252...so mono blocks, you are correct.