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Old 4th December 2012, 01:18 PM   #811
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Quote:
Originally Posted by ClaveFremen View Post
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.

Last edited by badrisuper; 4th December 2012 at 01:20 PM.
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Old 4th December 2012, 01:28 PM   #812
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Originally Posted by badrisuper View Post
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

Last edited by dtses; 4th December 2012 at 01:30 PM.
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Old 4th December 2012, 01:29 PM   #813
bcmbob is offline bcmbob  United States
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I have two of these at Dario's recommendation. Very nice pot.
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Old 4th December 2012, 01:31 PM   #814
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I bought this one.
Did you miss the link?
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Old 4th December 2012, 01:40 PM   #815
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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.
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Old 4th December 2012, 01:44 PM   #816
bcmbob is offline bcmbob  United States
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I'll admit the Alps Blue and the SMD do sound a little different. Again it's a preference and related components issue.
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Old 6th December 2012, 08:30 AM   #817
romvise is offline romvise  Italy
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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
Attached Images
File Type: jpg IMG_20120906_164944.jpg (576.9 KB, 138 views)
File Type: jpg IMG_20120906_172550.jpg (560.1 KB, 128 views)
File Type: png Rt60.png (23.4 KB, 118 views)
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Old 6th December 2012, 09:33 AM   #818
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Quote:
Originally Posted by romvise View Post
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?
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Old 6th December 2012, 10:18 AM   #819
bcmbob is offline bcmbob  United States
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+1

And is that a horn or TL speaker?
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Old 6th December 2012, 11:19 AM   #820
Marra is offline Marra  United Kingdom
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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.
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