Ladner dirty dragon User manual

OWNER’S MANUAL

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 2
TABLE OF CONTENTS
INTRODUCTION............................................................................................................................... 3
FRONT PANEL .................................................................................................................................. 4
REAR PANEL..................................................................................................................................... 6
SPECIFICATIONS............................................................................................................................. 7
TUBE PLACEMENT ......................................................................................................................... 8
WARRANTY....................................................................................................................................... 9
SAFETY INFORMATION .............................................................................................................. 10
Ladner Engineering Group LLC
124 Main Street
Bay Saint Louis, Mississippi 39520
USA
www.ladnerengineering.com
First Printing © 2013 - Ladner Engineering Group, LLC

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 3
INTRODUCTION
The old saying, big things come in small packages is captured in amplifier
form. Requested by players looking for a simple and portable amplifier
with massive tone that won't break your back loading in. Stripped down to
the bare essentials, the Dirty Dragon is all killer no filler. American
voiced with a unique tone stack combined with a touch sensitive preamp
allows the player to find his own tonal personality. Where did the name
come from? It was suggested by a long time friend and player David
Dyas, it had the perfect ring and description and it stuck. An amp that
is simple and pure doesn't need a lengthy introduction. Best way to
experience this 16 watts of bliss is to turn it up and let it sing! Enjoy your
Dirty Dragon and as always be sure to play it loud!
Andrew & D.C. Ladner

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 4
FRONT PANEL
1 - INPUT - ¼” jack that delivers the signal from the guitar to the first stage of gain in
the amplifier.
2 - VOLUME - Adjust the overall loudness and gain of the amplifier.
3 - BASS –Adjust the low frequency response of the amplifier. The unique Baxandall
tone stack implemented provides minimum interaction of the Bass and Treble
controls. In this configuration, the Mid frequencies are relatively fixed providing
significant range control of the low frequencies.
4 - TREBLE –Adjust the high frequency response of the amplifier. The unique
Baxandall tone stack implemented provides minimum interaction of the Bass and
Treble controls. In this configuration, the Mid frequencies are relatively fixed
providing significant range control of the high frequencies.
REFERENCE Baxandall, P.J. “Negative feedback tone control – independent variation of bass and treble
without switches” W.W. 58.10 (Oct. 1952) 402. Correction 58.11 (Nov. 1952) 444.
S
T
A
N
D
B
Y
PLAY
OFF
S
T
A
N
D
B
Y
123 4 5 6

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 5
5 –PLAY/STANDBY/OFF –An all-inclusive function control - go from OFF to STANDBY
to PLAY, with one switch. When powering the amplifier on, the unit should be
switched to the STANDBY position for at least five (5) minutes before switching to
the PLAY position. Additionally, when shutting down the amplifier, place this switch
in the STANDBY position for at least five (5) minutes before switching to the OFF
position. After placing the unit in the OFF position, allow the unit to cool down
before transporting, as the tubes are still hot and more likely to be damaged due to
shock or vibration. Taking these precautions can help to greatly extend the life of
the tubes, especially the output tubes.

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 6
1234
Rear Panel
1 –FUSE- This is the line fuse for the amplifier. The proper fuse should be installed as
indicated on the rear panel of the unit. The table below shows the proper fuse to
be used with the indicated line voltage. NOTE: Failure to install the proper fuse
based on the line voltage noted can result in personal injury, fire, damage to the
amplifier or other nasty things too numerous to mention here.
2 - AC POWER –an IEC standard removable power cable. The unit should only be
plugged into a proper AC Line Voltage as indicated on the rear panel of the unit.
4 –POWER SELECT –Power OutPut selector Full or Half –This selector should only be
changed when the unit is in the STANDBY or OFF position ONLY!!!
3 –SPEAKER OUT - ¼” jack that delivers the amplifiers output signal to a speaker
cabinet.
LINE VOLTAGE
FREQ
FUSE
FUSE TYPE
120 VAC
50/60 Hz
1 A
AGC
230 VAC
50/60 Hz
0.5 A
AGC

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 7
SPECIFICATIONS
OUTPUT POWER >16 Watts Class A/B
OUTPUT IMPEDENCE 4 Minimum Load ONLY!!
INPUT 1 M
EQUALIZATION Bass, Treble - Modified Baxandall Tone Stack
NOTICE: Ladner Engineering reserves the right to change, modify or eliminate any and all
specifications as it deems appropriate, without notice.

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 8
BACK
FRONT
TUBE PLACEMENT
V1: Input stage (Mullard 12AX7A)
V2: Tone (Sovtek 12AX7LPS)
V3-V4: Output (Tung Sol 6V6)
CAUTION: Tubes are HOT when in use,
and for a while after the unit has been
turned off, use extreme caution when
changing.

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 9
WARRANTY
All Ladner amplifiers sold by authorized Ladner dealers are warranted by Ladner
Engineering Group to be free from defects in material or workmanship under
normal use and service for a period of five (5) years* on parts and three (3)
years* on labor from the original date of purchase. Speaker cabinets are
covered for a period of three (3) years* on parts and labor from the original
date of purchase.
Any products found to be defective within the applicable period will be repaired
or replaced at the option of the Ladner Engineering Group, without any charge
provided that; (1) the product was not misused, abused, improperly
maintained, or repaired by any person not authorized by Ladner Engineering
Group; (2) its failure resulted from a defect in material or workmanship and
was not damaged due to use other than its intended use; (3) the product was
not used under abnormal, excessive, or unusual operating conditions and (4)
the product is promptly delivered prepaid to the seller at the place of purchase
or to an authorized Ladner Engineering Group warranty service center together
with proof of purchase within the applicable period.
There are no warranties, expressed or implied, other than those expressed
herein. Further, there is no warranty of merchantability or fitness for a
particular purpose. This warranty does not cover units used for loan or rental.
Limitation of Liability: the above warranty represents purchaser’s exclusive
remedy and Ladner Engineering Group, LLC shall not be liable for any special,
incidental, or consequential damages relating to the product sold.
Some states do not allow limitations on the duration of implied warranty or the
exclusion may not apply to some purchasers. This warranty gives purchasers
specific legal rights and purchasers may also have other rights that vary from
state to state.
* Exceptions:
Speakers
1 Year
Sound Reinforcement Products
3 years
Tubes, Cables
90 days
Vinyl Covers/Bags/Accessories
No Warranty

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 10
ALWAYS TURN POWER OFF WHEN CHANGING OR
REPLACING TUBES
SAFETY INFORMATION
Do not expose this amplifier to moisture or water (i.e. avoid dropping into swimming pools,
most lakes, water ways or use during times of excessive storm surge)** or extreme heat.
Turnoff and unplug before any tube change.
Only use the proper, AGC fuse. Remember ONLY!!!!
Keep the back of the amplifier away from curtains or other flammable materials.
Remove speaker and power cables before moving to avoid damage.
Only clean with a soft towel and mild cleaner. Remember ONLY!!!!
Unlike Trix, these amplifiers are NOT for kids, so keep it away from them.
Unplug during lightning storms, hurricanes, tsunamis or the like.
** … unless it’s a competitors amplifier, of course.
This amplifier produces EXTREME SOUND VOLUMES and can cause
PERMANET HEARING DAMAGE, handle with care.
… THIS MEANS YOU!
Some things are never a good idea …
Common sense is a valuable tool,
So Use It!!!
Always have this Amplifier serviced by a
QUALIFIED SERVICE PROFESSIONAL ONLY!
… Again please remember ONLY!!!!

Dirty Dragon Guitar Amplifier Owner’s Manual
PAGE 11
Thank you for your purchase, and welcome to the Ladner
Engineering family. We wish you many years of great tonal
bliss with your hand-built Dirty Dragon.
Andrew and D.C Ladner