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Rant on the SET critics

Posted 8th March 2016 at 05:16 PM by DougL

I am so tired of hearing that anyone who listens to SET amplifiers "Must like distortion".

It must be comforting to be that simple.

The reality of the situation is a single ended tube amplifier is a very specific solution to a very specific problem.

The topology results in an implementation that has vanishingly low distortion at very low power levels.

This is a direct result of three factors,
Low distortion of the audio triodes used, the lack of multiple devices and the avoidance of the non-linear magnetic behavior around zero crossing.

FWIW, this only works in the tube world for very low power on very efficient speakers.

I still have memories of listening to a Klipsch horn with a Phase Linear 400. I could not stay in the room at any power level. It was near class B and arguably the worst amplifier ever made. Still, it took an efficient speaker to highlight its faults.
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Interesting Horn info

Posted 11th July 2013 at 10:55 PM by DougL

In this post the User clams that the Compression driver Atlas PD5V is a derivative of the WE555, which was good down to 100 Hz

There was also mention of an AES paper on how to create a phase plug for a cone driver.

Based on Romy's ideas on a mid-bass horn, This might cover down to 200 / 300 hz to transition to a Tapped horn.
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My Horn Project

Posted 21st January 2013 at 11:13 PM by DougL

I have 2 Horn projects.
I would like to try a
SEOS / Econowave style with a SEOS 12 / 15 and a Denevo 360 compression driver.

I also want to try a LTO style 3 way

I am trying t do this inexpensively.
Looking at JMLC 400 1.4" mid-ranges
Radian 636 CD
B&C DE10 or B&C DE7 CD
JMLC 1000 or JMLC 1400

Looking for an approprate woofer.
The GPA 515 is beyond my means at the moment.

JBL 2226H are also reputed to be great

The TD15M has a following.

I have a DCX2496 and 6 channels of 30W class D amplification.
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Maze Back Horn

Posted 10th January 2013 at 11:01 PM by DougL

I want to make this for Adam.
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miniDSP tools

Posted 9th July 2012 at 02:29 PM by DougL

If I ever have my DCX break and need another XO, these tools look like they make miniDSP a real choice.

the Active Crossover Designer web page
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Tapped Horn

Posted 22nd December 2011 at 02:34 PM by DougL

Found this Discussion and resources:
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Field Coil Wild Burro

Posted 11th November 2011 at 07:33 PM by DougL

I had hoped that this might happen some day.
I will be watching this
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