Iron Pre Essentials Kits For The DIYA Store - Register Your Interest

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#1,101
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#1,104
It works! I jumped in the deep (for me) end and ordered a MUSES board from Academy Audio. It seems to work like a charm. I need to read IAIMH's gain musings (pun very much intended) more closely, as I'm a little surprised by the amount I have to "turn it up" on the 6db SE Iron Pre compared to the zero-gain preamp things were plugged into beforehand. Many are the differences.

This has been an incredibly fun project. Like: the most fun. Coming soon is a chassis from Gianluca (the ordering of which could not have been more straightforward, professional and pleasant). I look forward to the finished product, but kinda dread the process of cramming all of this into a very finite space.

Fun! And awesome.
 

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#1,105
It was mentioned that parallel outputs were no problem for Iron Pre SE.

Also balanced Iron Pre has SE and balanced output.

Can I parallel SE and balanced outputs on the balanced Iron Pre so I have the option to bi-amp with either?

In other words two pair of SE and two pair of balanced outputs?

I would only use one or the other at a time I think.

Although it raises the question of whether one could bi-amp with a SE and balanced amp at the same time?
 
#1,106
what?
thread is having just 1106 posts and you didn't found wanted info, repeated at least trice ?

:clown:

yes, my usual wiring arrangement is 2 parallel SE (set of) outputs with SE preamp, functional all in same time

yes, my usual wiring arrangement is 1 Bal and one SE (set of) outputs with Bal preamp, functional all in same time

set means stereo pair

you can put at back what you want , simply counting on fact that Rout is 200R in worst case

math explained few times already ....... sleepy , must fly
 
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#1,108
timkrone said:
It works! I jumped in the deep (for me) end and ordered a MUSES board from Academy Audio. It seems to work like a charm. I need to read IAIMH's gain musings (pun very much intended) more closely, as I'm a little surprised by the amount I have to "turn it up" on the 6db SE Iron Pre compared to the zero-gain preamp things were plugged into beforehand. Many are the differences.
Click to expand...

(1) Ay, someday I'll get one.
(2) I got two of the Muses volume pots, with and without remote. Still in the box. Originally bought to play with my B1. I thought they need a separate power supply.
(3) This is the Iron SE version? I guess with SE inputs all I need is the "normal" Muse pot?
(4) What is the numeric display?

Can we get some closer up pictures?
 
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#1,110
TonyEE, Yes. It is the Iron SE version. And it is powered off the Ground, V+, V- pads on the Iron Pre PSU, which it would now seem is an unrecommended. This is the precise product. The numeric display is volume.

ZM: why not? Power consumption is less than 15mA per rail. For sound, it's on the "I don't mind if I blow them up" speakers right now... but it's great. Your advice and counsel on this and the KISS thread has been fantastic.
 
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#1,111
considering all oscillator circuits on logic boards, whatever local isolation of rails on them is, I wouldn't trust them of not injecting some hush backwards

take small 3VA or so xformer with rectifier etc. and use it to separately power logic boards

decent care is invested to make Iron Pre regs proper, why risking injected noise?

ok, problem being strictly academic or not, but when going to build anything with premise of highly optimized thus of high performance capability, we are better not making any compromise

remember - even atomic bomb is made of bunch of tiny details, each one being pretty insignificant when observed separately

edit: all that presuming that of Muse you're using just attenuator section of circuit - its buffer/OP section is redundant if Muse is used in context of Iron Pre; so, full isolation of Digi PSU is sole thing I can recommend
 
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#1,112
timkrone said:
It works! I jumped in the deep (for me) end and ordered a MUSES board from Academy Audio. It seems to work like a charm. I need to read IAIMH's gain musings (pun very much intended) more closely, as I'm a little surprised by the amount I have to "turn it up" on the 6db SE Iron Pre compared to the zero-gain preamp things were plugged into beforehand. Many are the differences.

This has been an incredibly fun project. Like: the most fun. Coming soon is a chassis from Gianluca (the ordering of which could not have been more straightforward, professional and pleasant). I look forward to the finished product, but kinda dread the process of cramming all of this into a very finite space.

Fun! And awesome.
Click to expand...
Great, I bought one as well. Looked at instructions on line for using with 2018 BA pre.

They changed a few resistors, so I figured Iron Pre would be similarly modified to work correctly. Maybe that is the gain issue.

Think I will take another look at it, thanks for sharing.

Russellc
 
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