RMI-FC100, a single stage audio power amplifier

[anatech]

Hi Jaack,
I think so, but as I haven't used them I can't give you a qualified answer. Linear Technology does make very good parts, that I do know.

-Chris

 

[Jaack]

Hi Jaack,
I think so, but as I haven't used them I can't give you a qualified answer. Linear Technology does make very good parts, that I do know.

-Chris

ok...thanks Chris..your right 50$ is alot ..even if they are genuine fets

 

[Luke]

there a few people around here with real toshiba jfets, have a look around the swapmeet or ask in pass forums. Im sure you can get guaranteed real ones still, but hey are not cheap of course.

 

[jean-paul]

At least 150 pieces in stock but no buyer that wants them all 😉

 

[roender]

If you don't mind soldering SMD on a small adapter board, please use BF862

hello all

i just ordered a set of pcbs from Rudi, in my quest to find matched transistors..i came across this seller at ebay...'i know' ebay may not be the best place to source these things but check this place out. what do you think....https://www.ebay.com/itm/Toshiba-2SJ74-2SK170-LAB-MATCHED-PAIR-0-1mA-7-8ma-Idss-B-BL-Range-/253046095299

 

[Luke]

Hi Roender, still love your amp, is there any thought of a sequel🙂

 

[Jaack]

If you don't mind soldering SMD on a small adapter board, please use BF862

hello roender


would the liner systems fets at the diy store be a suitable replacement?

 

[roender]

Hi Roender, still love your amp, is there any thought of a sequel🙂

After almost 14 years I am still amazed how well this amp sounds. Hence, who need a sequel?

 

[roender]

hello roender


would the liner systems fets at the diy store be a suitable replacement?

I don't know, never use them.

 

[zdr]

After almost 14 years I am still amazed how well this amp sounds. Hence, who need a sequel?

Same here - beats the crap out of anything below 10k, new or old, I’d dare to say🙂

 

[lordoff]

After almost 14 years I am still amazed how well this amp sounds. Hence, who need a sequel?

I'm so glad to reading your posts again, Roender! 🙂

Welcome to the forum again!
After almost two years... Great!
I'm slow, slow builder. After year and half, my build finally is near.
But in this period, I never abandoned your idea and design. 🙂
and have no doubt that my choice is timeless and deserve to be build!

 

[Jaack]

after reading the last couple of post,i am getting more and more confidence to build this amp.


roender...if this amp is as good as everyone says it is...we dont need a sequel.....but it would be interesting to see what you come up with anyhow.


keep up the good work lordoff.....you'll get it done

 

[tarambuki]

After almost 14 years I am still amazed how well this amp sounds. Hence, who need a sequel?

We all want!
We all want!
...

 

[Ulyses31]

Replacement of BF860.

Hello everyone,

Would it be possible to replace the BF862 with the 2sk3557 or 2sk932 ?

Regards.

 

[zdr]

What drove you to those two transistors exactly?

 

[zdr]

2SK932 Buffer

 

[Ulyses31]

Thank you ZDR,

Here there is no stock in the usual suninistrators of the BF862 and the 2sk3557 has similar characteristics.

Regards.

 

[zdr]

I got some samples of the above fets so I will test when I find the time.

 

[rotundu]

Hello everybody!
I have bought some pcb's of RMI-100 and I am on finishing line of soldering the components.
As I am not an electrical engineer, just a hobbyist, could somebody help me with the biasing please?
Re=(over one resistor)
0R1 - Class A =mv, and AB = mv
same for 0R22 - Class A and AB
Also I need max power but not loosing the sound quality.
Thank you all!

 

[zdr]

Voltage drop across all Re must be between 18 and 20mV, regardless of resistor value.