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TONELEVEL

Enclosure not stated · 2 knobs

Tagboard Effects

Keeley Java BoostVerified

Based on the Keeley Java Boost· 1 other board clones it

Category
Boost
Controls
Tone · Level
Build
Vero· 17×8· 7 cuts, 1 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Booster, Keeley

From the post

Info from Keeley Electronics:

The Java Boost is a germanium based Treble Booster designed to give you classic tones from the 60's and 70's. It is not a clean boost.

It must be used with a cranked amp that is overdriven or distorting a bit already. Cranking the amp and pedal will result in more creamy, beautiful, sustaining distortion with the Java Boost.

The Java Boost is most widely used with a tube amp set to a bit of overdrive or clipping which is the key to getting a great sound from this pedal. Setting the java boost in front of a very clean amp with the volume on 1-2 will surely result in a fairly weak guitar tone! Set the amp for some breakup, then click the Java on. There, you'll have a fantastic sound and see why people rave about the Java Boost.

Features

* Modern Dallas Rangemaster Circuit * 3 way Switched Treble-Booster - Locking 3 way switch so your setting is not moved. * Stock Vintage Rangemaster (Center), Mid-boost (Right), and Full Range (Left) * Metal film parts for low noise * The ULTRA RARE MULLARD OC44 !!!!!!!!!!!!!!!!

The Java Boost is not related to the TS9 or Blues Driver, or any other distortion or overdrive pedal. Boss and Ibanez do not make anything like it!

This product is a Treble Booster by design, not a typical overdrive or distortion pedal. That means, the higher the note played, the more it gets amplified and then, by your amp, distorted. Bass notes get cut in two modes on the Java Boost!

Some people don't have experience with treble boosters. This can make using the Java Boost difficult if you try to use it with a huge power amp that has tons of headroom or doesn't distort easily. The trick to get the Java Boost to outperform any other pedal is to have the right amp settings. The amp should be on the verge of breakup or greater. This is where the wealth of tone will is possible.

Another way to run it is before an overdrive pedal. This is the pedal to get if you want a two pedal overdrive setup. Couple this in front of a TS9 or BD-2 and the results are simply amazing. This will add sparkle and life to your solos like no other pedal can.

So what if your amp is set to super clean?!?! No problem, I've found that I love the Java Boost in front of most other overdrive pedals! Yes, simply use the Java in front of your blues driver, TS, DS, BD, SD, FF type pedal and you get similar results when the standard overdrive pedal is on.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 14 rows

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RefValueNormalizedTypeNotes
Resistors 3
×21M1Mread from the layout by eye
×1470K470kread from the layout by eye
×15K65.6kread from the layout by eye
Capacitors 5
×210n10nread from the layout by eye
×16n86.8nread from the layout by eye
×147n47nread from the layout by eye
×1100n100nread from the layout by eye
×247u47uelectrolytic; one axial, one radial; read from the layout by eye
Transistors 1
Q1OC44OC44OC44 or similar PNP Ge; read from the layout by eye
Potentiometers 2
ToneB100KB100kPotentiometerread from the layout by eye
LevelA10KA10kPotentiometerread from the layout by eye
Trimmers 2
×1100K100kread from the layout by eye
×110K10kread from the layout by eye
Switches 1
SwSPDT on/off/onSPDT ON/OFF/ON3 position toggle, selects the input capacitor; read from the layout by eye

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