Comments on: A Simple One-Tube Compressor Circuit c.1953 https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/ information and ideas about audio history Sun, 08 Jun 2025 13:51:58 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Muznoz https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-654844 Sun, 08 Jun 2025 13:51:58 +0000 http://www.preservationsound.com/?p=8272#comment-654844 In reply to Adam.

La constante de temps est établie par le condensateur de 20µF et la résistance de 25 K du potentiomètre sur la cathode du premier étage, la tension varie en fonction du niveau d’entrée. Cette tension est récupérée sur le curseur du potentiomètre ( il serait prudent d’y adjoindre une résistance en //de 1MO),sur la grille du deuxième étage qui fonctionne (rait?) en AGC en “courcircuitant” plus ou moins la première résistance de de 470 K. Peut être qu’ avec un tube à plus grand gain genre 12ax7, un préamp et un buffer de sortie…. mais l’hiver sera peut être dur……..

]]> By: Héctor https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-616710 Sat, 08 Jan 2022 16:21:33 +0000 http://www.preservationsound.com/?p=8272#comment-616710 Hi, what type of transformers do you recommend for mic input and line output? I have no experience with this type of circuit. What voltage did you apply? Thanks a lot!

]]> By: Claudio https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-583383 Thu, 20 Jun 2019 14:25:42 +0000 http://www.preservationsound.com/?p=8272#comment-583383 In reply to ldr.

I found this thread a few months ago, I find very easy to give a try, did you use 6SL7? what voltage did you apply?
Is strange 470K for plate, did you try lower resistance? I will like a clean sound.

]]> By: ldr https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-576173 Sun, 14 Apr 2019 18:30:20 +0000 http://www.preservationsound.com/?p=8272#comment-576173 In reply to chris.

hey…i know it’s an old thread but could you tell my your experience more why is it awful? Mine sounding pretty awesome…cheers!

]]> By: chris https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-381727 Mon, 12 Dec 2016 15:51:47 +0000 http://www.preservationsound.com/?p=8272#comment-381727 In reply to Adam.

I am not sure exactly how it works but it sounds awful and i don’t recommend that anyone build it, total waste of time.

]]> By: Adam https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-381726 Mon, 12 Dec 2016 15:40:23 +0000 http://www.preservationsound.com/?p=8272#comment-381726 So, what makes this different than a simple single stage tube amp? Is it the configuration of the capacitors that cause the compression?

]]> By: chris https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-295067 Tue, 27 Jan 2015 22:53:09 +0000 http://www.preservationsound.com/?p=8272#comment-295067 In reply to alex.

Hi. It’s possible, but it would be ill advised. I would recommend putting at least one voltage-gain stage ahead of it, and an interstate volume control as well. c.

]]> By: alex https://www.preservationsound.com/a-simple-one-tube-compressor-circuit-c-1953/#comment-294015 Thu, 22 Jan 2015 21:50:33 +0000 http://www.preservationsound.com/?p=8272#comment-294015 would this work at the front end of guitar amp?

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