Award Session Jerry Donahue JD20 Mengenal - Halaman 2

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JD20 - Is it a pre-amp, a pedal or part of an amp?

Actually, it's all three. First there was the Sessionmaster AW10 rack mount direct

recording preamp, then from that early design came the tonally improved pedal

version, the JD10. The JD10's sound was so popular we used it's circuitry as the

lead channel of the Sessionette amp.

Now, we've re-designed the JD10 to include the requests of many users,

for the CLASSIC/HEAVY selector switch to be made footswitchable. In

order to set different volume levels between CLASSIC and HEAVY, we

have provided a BALANCE control.

Applications

Use In The Studio: The JD20 is a unique low noise

pre-amp for playing guitar direct to tape, PA, Hi-Fi,

mixers and guitar amps. It is able to replicate the

sounds of typical high quality tube amplifiers and

produce sounds from the earliest Rock and Roll tones

right up to modern day Grunge Metal... making it

ideal for all demo and project recording work. JD20's

highly accurate G12T™ Speaker Simulation means

there is no need to spend hours mic'ing up. And in

home studios, you can capture the sound of a fully

cranked guitar amp'... without waking up the

neighbours!

Live Use On Stage: Give your amp the sound it

should have had to begin with! Plug it into the input

of your guitar amp and use it as an amp sound

expander for live performances. Just hit the BYPASS

footswitch when you want to go back to your regular

amp tone. When in BYPASS mode, The JD20 does

not corrupt your straight sound... but it does beef up

the signal enabling it to drive guitar cords and

multiway snakes over 100 yards/meters long. So even

when not active as an effect JD20 can still improve

your tone.

Classic Amp Tones To Get You Going

SET FOOTSWITCH TO CRUNCH

1: DIRTY (AC) THIRTY - HANKY PANKY™

SET FOOTSWITCH TO CRUNCH

2: VINTAGE "TWIN" - COUNTRY BOY

Humbucker Emulation: Don't build a mid booster

into your valuable instrument. Use the JD20 between

your single coil pickup and amp in the normal way,

but be able to footswitch between the two tones. Set

up a pleasing clean sound and then switch in the

G12T Speaker Simulation which removes the thin

edgy high tones and adds extra bite at at around

3kHz. Simply use the BYPASS footswitch to alternate

between the two tones. A little overdrive gives the

humbucker sound 'growl'. Dial in some deep

overdrive for silky smooth mega sustain and searing

solos that cut through the band to make you really

stand out.

Use Of Effects PedaIs/Processors: Overdrive and

wah pedals should aIways be used between the guitar

and the JD20. It is best to try and connect chorus,

echo, reverb or other time delay effects between the

output of the JD20 and the input of the amplifier, PA,

recorder or Hi-Fi. Generally this produces a more

pleasing sound. However, this is not a firm rule and

you may prefer the results with all effects units

between guitar and the JD20. Don't be afraid to

experiment. Whichever sounds best to YOU is right.

When you have a good sound... you natural play well

too!

All setups assume direct recording with G12T on

SET FOOTSWITCH TO HEAVY

3: DRIVEN STACK - DEVILS TONE (666)™

SET FOOTSWITCH TO HEAVY

4: HOT-RODDED STACK - MANIC METAL

Front Panel:

1. DRIVE DEPTH: Sets amount of distortion.

2. BALANCE: Sets the loudness ratio between

CLASSIC and HEAVY modes.

3. TREBLE: Adjusts the intensity of frequencies

above 1kHz.

4. MIDDLE: Adjusts the intensity of frequencies

between 200Hz and 1kHz.

Rear Panel

1. BYPASS: Footswitch for use during live

performance to access your guitar amp's original

sounds.

2. CRUNCH/HEAVY: Distortion voice selector

which allows you to change between CRUNCH

& HEAVY by footswitch.

3. OUTPUT: Lo-Z to drive long cables without

tone or volume loss - even in BYPASS mode.

4. POWER INPUT: For connecting an external

power supply. Use any power supply giving a

positive or negative output between 9 & 30

volts DC. This unit is equipped with

AutoSense™ circuitry which detects the

Classic Guitar Tones

SET FOOTSWITCH TO CRUNCH

5: CLAPTON - Layla (2)

SET FOOTSWITCH TO CRUNCH

6: KOSSOF - All Right Now (3)

5. BASS: Adjusts the intensity of frequencies below

200Hz.

6. VOLUME: Adjusts the output level.

incoming voltages and adjust itself automatically.

NO HARM CAN BE DONE BY USE OF AN

INCORRECT POWER SUPPLY, providing the

above guidelines are adhered to.

5. G12T Speaker Simulation: In/Out switch.

Enables the pre-amp to be connected to a

recorder or PA system and prevents the sound

from sounding fizzy or unnaturally thin.

6. INPUT: Hi-Z input circuitry to prevent pickup

loading effects.

Pickup selections (1=neck 2=middle 3=bridge)

SET FOOTSWITCH TO CRUNCH

7: HENDRIX - The Wind Cries Mary (1)

SET FOOTSWITCH TO CRUNCH

8: TOWNSEND - I Can See For Miles (3)