My_Ref Fremen Edition RC - Build thread

[badrisuper]

Originally Posted by ClaveFremen

For volume control a log one should be used.

IMHO it explain why your volume goes up so quickly...

Can you refer a good one? I dont think the volume gone up with minimum increase. Its loud but not that much loud. I will check again.

[dtses]

Originally Posted by badrisuper

Can you refer a good one?

I bought this one. Should be even better then Alps as it's of ladder type, but I didn't compare though have them both.

One bad common thing about China attenuators, is that the 1st one I got couple of month ago was completely defective, the other one had a wrong DALE resistor soldered on both channels. So I had to replace them with Vishay, didn't want to spend another month of waiting for the 3rd one

[bcmbob]

I have two of these at Dario's recommendation. Very nice pot.

[badrisuper]

Originally Posted by dtses

I bought this one.

Did you miss the link?

[badrisuper]

Originally Posted by bcmbob

I have two of these at Dario's recommendation. Very nice pot.

I have the same Bob. Its so nice. I am using it with Siva's MyRef. I felt like it rolled off the high frequency. I planned to use it with FE but i auditioned Siva's system where he used plain philips carbon potentiometer and changed my mind gone to Alps. I will try the mentioned attenuator. May be off topic, I even had clipping with siva's MyRef, but only at 80% volume. It is really louder.

[bcmbob]

I'll admit the Alps Blue and the SMD do sound a little different. Again it's a preference and related components issue.

[romvise]

The amps are built and working from September, some photos are attached below.

They are a far cry from the gainclone I had and considering that the power stage is practically the same, I guess the project make a difference.
The most obvious aspect is the control of low frequencies that now are more consistent with the rest of the spectrum, before the bass*joined to standing waves of the room, making it sound very artificial.

Now the modal resonances remain, but the bass is still nice, however I would add a few pictures with the rock wool to dampen the reverberation of the room.
I've attached also a picture with a graph of RT60 of right channel (RT60 is the time required for reflections of a direct sound to decay by 60 dB below the level of the direct sound.)

Then I perceived a greater involvement with the voices, thanks the great detail and dynamics.

In conclusion, the My_Ref_FE have really satisfied me, the transition from gainclone was not a side-grade, as initially thought.

Thanks,
Roberto

[ClaveFremen]

Originally Posted by romvise

The amps are built and working from September, some photos are attached below.

Hi Roberto,

thanks for the feedback.

Do you have any pic of the interior or of the build process?

[bcmbob]

+1

And is that a horn or TL speaker?

[Marra]

I have to agree.I had built a PD 3875 gainclone but the My_Ref_FE just blows it out of the water.Sorry Peter but it just does.