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dirty_teen.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>FAUSTONE Amplifiers & Effects</title>
<meta name="author" content="Fausto Pérez">
<meta name="description" content="Faustone electric guitar tube amplifiers and effect pedals are hand built in Toledo, Spain. Faustone.com features pictures and schematics of the Valve Klipper and Fuzz Unit pedals and the Dirty Teen 18W amplifier.">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/styles.css">
</head>
<body class="dt">
<header class="clearfix">
<nav>
<ul id="nav">
<li><a href="dirty_teen.html" class="current">Dirty Teen</a></li>
<li><a href="valve_klipper.html">Valve Klipper</a></li>
<li><a href="fuzz_unit.html">Fuzz Unit</a></li>
<li><a href="other_projects.html">Other projects</a></li>
</ul>
</nav>
</header>
<article class="clearfix">
<hgroup>
<div class="wrapper">
<a href="index.html"><h1>Faustone</h1></a>
<h2>Dirty Teen</h2>
</div>
</hgroup>
<div class="wrapper">
<p class="intro">The Dirty Teen head is an 18W type amplifier with EF86 preamp.</p>
<section class="description clearfix">
<img src="img/dirty_teen_intro.jpg" alt="Faustone Fuzz Unit">
<p>The <strong>Dirty Teen 18W amplifier</strong> is my take on the famous short-lived 18W 1965 Marshall circuit. With two ECC83 preamp channels, two EL84s in the power amp and one EZ81 as a rectifier, the original amplifier shared most of its genes with the venerable Vox AC15. A lesser-known fact is that it actually shared <em>all</em> of its genes with the 1960 Watkins W20T Dominator. Marshall simply copied the Watkins schematic to a tee as they had done some years before when they cloned a Fender Bassman and called it the JTM45. Hey! If Marshall did it and got away with it, all of us can do it!</p>
<p>A few years ago this circuit was brought back to the spotlight by the nice folks at <a href="http://www.18watt.com/">18watt.com</a>, who were generous enough to share their knowledge with the world. The original schematic and many ideas and variations of the circuit can be found there. One of the most popular modifications among hobbyists and boutique amp builders is substituting one of the ECC83 channels with a a Vox-style EF86 preamp.</p>
<p>I built one for myself, loved the sound and decided that it would be a nice addition to my line of amplifiers consisting of one model only.</p>
<p>The <strong>Dirty Teen</strong> has only one channel, and mounts a EF86 as its preamp tube. The EF86 is a single pentode that has more gain than a regular ECC83. The EF86 provides the classic early Vox chime and growl, but it is also very sensitive to vibrations so in return it needs to be well taken care of. That's why the <strong>Dirty Teen</strong> comes in a head format only. You can see it here pictured with a matching 2x12” cabinet equipped with Celestions.</p>
<p>The high gain of the EF86 is tamed through a Gain toggle switch, for cleaner sounds. Two different EQ circuits follow the first gain stage: a 6-way Colour rotary switch which selects different capacitors for different voicings, and a Bass/Treble EQ circuit, fully switchable to avoid any insertion loss. It is my experience that the fewer components in the signal path, the better an amplifier sounds, so the EQ circuit can be completely switched off without affecting the signal, but only if you need to.</p>
<p>All the <strong>Dirty Teen</strong> amps come with a set of custom TDS transformers, Sozo signal capacitors, 2W PEC potentiometers, F&T electrolytics and carbon composition resistors.</p>
<p><a href="other_projects.html#video_amaral"><strong>Hear it in action</strong></a>.</p>
<aside class="features">
<h3>Dirty Teen Features</h3>
<ul>
<li>Point to point <strong>hand wired</strong>.</li>
<li><strong>EF86</strong> preamp.</li>
<li><strong>2x EL84</strong> power amp.</li>
<li><strong>EZ81</strong> rectifier.</li>
<li>TDS <strong>custom transformers</strong>.</li>
<li><strong>Sozo</strong> signal capacitors.</li>
<li>2W <strong>PEC pots</strong>.</li>
<li><strong>Carbon comp</strong> resistors.</li>
</ul>
</aside>
<aside class="schematic">
<h3>Dirty Teen schematic</h3>
<a href="pdf/Faustone_Dirty_Teen_schematic.pdf"><img src="img/dirty_teen_schematic.gif" alt="Dirty Teen schematic thumbnail"></a>
<p>Dirty Teen <strong>schematic</strong> and info. <em>For educational purposes only. Please note that I'm not offering technical support if you want to build yourself one.</em><a href="pdf/Faustone_Dirty_Teen_schematic.pdf"><button>Dirty Teen schematic .pdf</button></a></p>
</aside>
</section>
<section class="gallery">
<div class="small clearfix">
<figure>
<img src="img/dt/faustone_dirty_teen_chassis.jpg" alt="Faustone Dirty Teen chassis">
<figcaption>Dirty Teen chassis. Note the custom transformers.</figcaption>
</figure>
<figure>
<img src="img/dt/faustone_dirty_teen_back.jpg" alt="Faustone Dirty Teen back panel">
<figcaption>Dirty Teen back panel.</figcaption>
</figure>
<figure>
<img src="img/dt/faustone_dirty_teen_gutshot_1.jpg" alt="Faustone Dirty Teen internals 1">
<figcaption>Dirty Teen internals.</figcaption>
</figure>
<figure>
<img src="img/dt/faustone_dirty_teen_gutshot_2.jpg" alt="Faustone Dirty Teen internals 2">
<figcaption>More Dirty Teen internals.</figcaption>
</figure>
<figure>
<img src="img/dt/faustone_dirty_teen_red.jpg" alt="Faustone Dirty Teen red tolex">
<figcaption>Red tolex. S/N 01 with slightly different front panel layout.</figcaption>
</figure>
<figure>
<img src="img/dt/faustone_dirty_teen_orange.jpg" alt="Faustone Dirty Teen orange tolex">
<figcaption>Dirty Teen in orange tolex.</figcaption>
</figure>
</div>
<figure>
<img src="img/dt/faustone_dirty_teen_bw_1.jpg" alt="Faustone Dirty Teen front">
<figcaption>Dirty Teen front standard two-tone tolex.</figcaption>
</figure>
<figure>
<img src="img/dt/faustone_dirty_teen_bw_2.jpg" alt="Faustone Dirty Teen back">
<figcaption>Dirty Teen back shot.</figcaption>
</figure>
</section>
</div>
</article>
<footer class="clearfix">
<div class="wrapper">
<img src="img/fausto_profile.jpg" alt="Fausto Pérez of Faustone.com">
<section class="about">
<h4>About</h4>
<p>My name is <strong>Fausto Pérez</strong>. I live in Toledo, Spain.</p>
<p>This website features some of the guitar amplifiers and effect pedals I've built over the years under the <strong>Faustone</strong> name.</p>
<p>Building electronic equipment for <strong>Faustone</strong> was once a full-time occupation for me but —unfortunately— it's not anymore.</p>
<p>Please email me at <strong>info -at- faustone -dot- com</strong>.</p>
<!-- <p><a href="https://twitter.com/faustone_com"></a></p> -->
</section>
<section class="links">
<h4>Links & friends</h4>
<ul>
<li><a href="http://stompboxes.co.uk/forum/index.php">D*A*M forum</a></li>
<li><a href="http://www.guitarrista.com/phpbbforum/">Guitarrista.com</a></li>
<li><a href="http://www.pisotones.com/">Pisotones.com</a></li>
<li><a href="http://www.elmusicoloco.com/">El Músico Loco FX</a></li>
<li><a href="http://www.effectsdatabase.com/model/faustone">Effects Database</a></li>
</ul>
</section>
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