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U S E R S G U I D E
G U I T A R A M P L I F I E R
SPANKY MKII MODEL
Your 3RD POWER Amplifier is a professional musical instrument amplifier. The information
contained herein is current at the time of publication. However, specifications are subject to
change without prior notice.
PRECAUTIONS & WARNINGS
READ THESE INSTRUCTIONS.
KEEP THESE INSTRUCTIONS.
HEED ALL WARNINGS.
FOLLOW ALL INSTRUCTIONS.
YOUR AMPLIFIER IS LOUD!
EXPOSURE TO HIGH SOUND VOLUMES MAY CAUSE PERMANENT HEARING DAMAGE !
Practice “safe listening.”
No user serviceable parts inside. Refer service to qualified personnel. Always unplug AC
power before removing chassis.
IF YOU INTEND ON OPERATING THIS EQUIPMENT OUTSIDE OF THE USA: Always insure
that unit is wired for proper voltage. Make certain all connections and grounding
conforms with local standards. Make certain that you have obtained authorization to
operate prior to connecting to power supply.
WARNING: Vacuum tube amplifiers generate heat. To insure proper ventilation always
make certain there is at least four inches (100mm) of space behind the rear of the
Keep away from curtains or any flammable objects.
WARNING: Do not block any ventilation openings on the rear or top of the amplifier. Do
not impede ventilation by placing objects on top of the amplifier which extend past the
rear edge of its cabinet.
WARNING: Do not expose the amplifier to rain, moisture, dripping or splashing water. Do
not place objects filled with liquids on or nearby the amplifier.
WARNING: Always make certain proper load is connected before operating the amplifier.
Failure to do so could pose a shock hazard and may result in damage to the amplifier.
Do not expose amplifier to direct sunlight or extremely high temperatures.
Always insure that amplifier is properly grounded. Always unplug AC power cord before
changing fuse or any tubes. When replacing fuse, use only same type and rating.
Avoid direct contact with heated tubes. Keep amplifier away from children.
Be sure to connect to an AC power supply that meets the power supply specifications
listed on the rear of the unit. Remove the power plug from the AC mains socket if the unit
is to be stored for an extended period of time. If there is any danger of lightning occurring
nearby, remove the power plug from the wall socket in advance.
To avoid damaging your speakers and other music equipment, turn off the power of all
related equipment before making the connections.
Do not use excessive force in handling control buttons, switches and controls. Do not
use solvents such as benzene or paint thinner to clean the unit. Wipe off the exterior with
Special Features of the Wooly Coats, Spanky Amplifier:
• Hand-built in East Nashville, TN
• Volume, Treble, Middle and Bass controls
• Expanded mid-range frequency control for Blackface to Tweed styled tones
• 8 ohm or 4 ohm speaker output jacks
• 1W carbon film resistors for low noise, 1/2W carbon composition resistors for tone
• Long-tailed-pair phase inverter for greater headroom
• Power and Standby switches on the front panel
• Mallory and Orange Drop capacitors
• High-quality filter caps including F&T Capacitors
• Choke filtered power supply
• 12" speaker
• Dual 6V6 output tubes
• 5AR4 rectifier tube
Tube-driven Spring Reverb On Board
The Spanky MKII features a full-size spring Reverb tank on board. The design features all-tube drive
and recovery circuits that delivers a vintage sounding reverberation effect with a mix level control
located on the front panel.
Dimensions & Weights:
Subject to change anytime. Please measure your amp carefully if a custom case is being made. These
measurements do not include handle and rubber feet.
Dimensions (WxHxD): 19.875 x 16 x 9.5 in.
Weight: 35 lbs
Preparing to Operate your Wooly Coats™ Spanky MKII Amplifier
Make certain that all connections are made prior to operating your Amplifier including power cable,
speaker connection, instrument cable and instrument connection. Make certain that all tubes are
Power Switch (1)
The POWER switch, when placed in the UP position, provides AC wall power to the amplifier.
Standby Switch (2)
The STANDBY switch, when placed in the DOWN position, puts the amplifier in ‘standby mode’
allowing the tubes to warm up. When this switch is place in the UP position, the tube circuitry is fully
functional and ready to amplify your guitar signal.
Input Jacks (3 and 4)
The INPUT jack is where you connect instrument level signals. HI and LOW sensitivity inputs are
provided for versatility.
Volume Control (5)
The VOLUME control allows you to adjust the signal level as well as the temperament and overall
character of your instrument’s sound.
Treble Control (6)
The TREBLE control allows you to adjust the character of the higher frequency range.
Middle Control (7)
The MIDDLE control allows you to adjust the emphasis of the mid-range frequencies.
Bass Control (8)
The BASS control allows you to adjust the depth of your lower frequencies.
Front Panel: Input Section
The global REVERB control allows you to adjust the overall amount of ambience in your sound. The
reverb effect in this amplifier features pure Class A vacuum tube drive and recovery circuitry to
deliver an authentic, vintage sounding spring reverb effect.
HybridMASTER™ Control (10)
The patented HYBRID MASTER control allows you to set the overall volume level of the amplifier
independent of the volume and tone settings established on the front panel.
Front Panel: Global Controls
AC Input (11)
The AC INPUT socket (TYPE IEC Grounded) is a required connection for operating the unit at 120V
(standard USA household electrical power).
Mains Fuse (12)
The MAINS FUSE requires a 1.25 AMP slow-blow fuse. This fuse protects your amplifier from voltage
peaks from your power outlet.
H.T. Fuse (13)
The H.T. FUSE requires a .25 AMP (250 milliamp) slow-blow fuse. The H.T. FUSE usually blows if your
power tubes are bad to protect the circuit from being damaged.
• Always plug your amp into a properly grounded 3 prong AC outlet.
• Never plug your amp into an ungrounded outlet.
• Never remove or break off the 3rd prong safety ground pin from the power cord.
• Never use a damaged or ungrounded power cord.
• Always use the proper value and type fuse according to the rear-panel markings.
• Never attempt to replace the fuse while the amplifier is still plugged into the power source. The
fuse should only be replaced when the power cord has been disconnected from its power source.
8-OHM Speaker Output (14)
The Wooly Coats Spanky model has been designed to give you the greatest amount of flexibility
when operating your amplifier. Now you can choose the correct speaker output impedance for your
situation. Connect the internal speaker to the 8-OHM when operating only the internal speaker. .
4-OHM Speaker Outputs (15)
The 4-OHM SPEAKER OUTPUTS are wired in parallel. They are provided for connecting your
amplifier to a single 4-OHM speaker, or two 8-OHM speaker cabinets, or more traditionally, a remote
speaker cabinet that is connected simultaneously with the internal speaker.
• Never operate your amplifier without a connected speaker cabinet. This will damage your tubes
or transformers - or both.
• Always operate your amplifier with the proper impedance output that matches your speaker
• In all cases, always use a good quality heavy gauge speaker cable (not a shielded instrument
cable) to connect your guitar amplifier to the internal speaker or external speaker cabinet(s).
Foot Switch Jack (16)
The FOOT SWITCH jack is provided so that you can turn the onboard effect(s) on and off as desired.
In the reverb-only version, this jack is a standard “tip/sleeve” configuration. In the reverb + tremolo
version, this jack is configured as a “tip/ring/sleeve” allowing control of both effects.
To Tank Reverb Connection (17)
This RCA jack connection is provide to send the amplifier signal to the reverb tank.
From Tank Reverb Connection (18)
This RCA jack connection is provide to receive the return signal from the reverb tank.
• To avoid unnecessary noise, please make sure that you use a standard “shielded” guitar cable for
the reverb-only foot-switch connection.
• To avoid unnecessary noise, please make sure that you use a “shielded” TRS cable for the reverb
+ tremolo foot-switch connection.
• Please make sure that the reverb send and return are connected with proper orientation and
that you are using shielded RCA wire connections.
Tube Layout and Requirements:
V1 and V2: JJ 12AX7 (Preamp)
V3 and V4: Sovtek 12AX7LPS (Reverb and Phase Inverter)
V5 and V6: JJ 6V6 output tubes
V7: JJ 5AR4 Rectifier tube
Your Wooly Coats Spanky Amp comes from the factory biased at 24ma idle current for JJ 6V6 tubes.
Bias adjustments are not intended to be user-serviceable. Attempting to adjust the bias yourself will
expose you to very dangerous high-voltage electricity that can kill you. Special test equipment and
knowledge of amp circuits and tubes are required to perform this function. DO NOT ATTEMPT TO DO
WE RECOMMEND TAKING YOUR AMPLIFIER TO A QUALIFIED TECHNICIAN FOR SERVICING YOUR
TUBES. Make certain the amplifier is turned off and has been allowed ample time to cool down. Be
very careful when you remove the tubes as they might still be very hot! Do not touch tube sockets
with fingers! Even after turning your amp off and unplugging it from the power outlet there could be
enough voltage stored in the capacitors to give you a lethal electrical shock.
• Do not remove the back panel.
• Do not attempt to check or replace tubes yourself. Refer to an authorized service center.
• Never touch the tubes while the amplifier is turned on or has recently been turned ON. You can
severely burn your fingers and hands.
Thank you for choosing 3RD POWER Amplification. 3RD POWER takes great pride in producing high-quality tube
amplifiers and speaker cabinets. Each product is thoroughly tested prior to shipment.
Your amplifier is warranted to the original purchaser to be free from defects in material and workmanship for a
period of 33-1/3 years from the original date of purchase. An original sales receipt will establish coverage under
this warranty. This warranty does not cover service or parts to repair damage caused by accident, neglect, abuse,
normal wear, disaster, misuse, over-powering, negligence, inadequate packing or shipping procedures and service,
repair or modifications to the product which have not been authorized by 3RD POWER. If this product is defective
in materials or workmanship as warranted above, your sole remedy shall be repair or replacement as provided
Tubes: 3RD POWER warrants the original purchaser that the tubes used in the unit will be free from defects in
material and workmanship for a period of 90 days from the original purchase date. A dated sales receipt will
establish coverage under this warranty. This warranty is in lieu of all other expressed warranties. If tubes fail
within the initial 90 day period your sole remedy shall be the replacement of tubes as provided below.
Return Procedures: In the unlikely event that a defect should occur, follow the procedure outlined below.
Defective products must be shipped, together with proof of purchase, freight pre-paid and insured directly to 3RD
POWER. A Return Authorization Number must be obtained prior to shipping the product. Contact 3RD POWER to
obtain this RA number. Products must be shipped in their original packaging or equivalent. IN any case, the risk of
loss or damage in transit is borne by the purchaser. The RA number must appear in large print directly below the
shipping address. Always include a brief description of the defect, along with your correct return address and
When calling to inquire about a returned product, always refer to the RA number. If 3RD POWER determines that
the unit was defective in materials or workmanship at any time during the warranty period, 3RD POWER has the
option of repairing or replacing the product at no additional charge, except as set forth below. All replaced parts
become property of 3RD POWER. Products replaced or repaired under this warranty will be returned via ground
shipping within the United States, freight prepaid. 3RD POWER is not responsible for costs associated with
expedited shipping, either to 3RD POWER or returned of the product to the customer.
Incidental or Consequential Damage: In no event will 3RD POWER be liable for any incidental or consequential
damages arising out of the use or inability to use any 3RD POWER product, even if a 3RD POWER dealer has been
advised of the possibility of such damages or any other claim by any other party. Some states do not allow the
exclusion or limitation of consequential damages, so the above limitation and exclusion may not apply to you.
This warranty gives you specific legal rights and you may also have other rights which may vary from state to
For your protection: Please complete and mail the Purchase Information Card within (10) ten days of the date of
purchase so that we may contact you directly in the event a safety notification issued in the accordance with the
1972 Consumer Product Safety Act.
Customer Support: Our dedicated staff is ready to assist you should you have any questions with regard to your
product. Please call: (615) 945-3393 (9:00 AM to 5:00 PM Monday through Friday, Central Standard Time).
*INTENTIONALLY LEFT BLANK SO THAT YOU CAN DRAW A PICTURE EXPRESSING HOW THIS AMP MAKES YOU FEEL - OR - YOUR FAVORITE AMP SETTINGS
3RD POWER Amplification LLC
1307 Jewel Street
Nashville, TN 37207
Phone: (615) 945-3393
Thursday, May 3, 2018