65 AMPS Stone Pony User manual

65 AMPS Stone Pony
User Manual
65AMPS IS A DIVISION OF 65 AMPS CORP,
A CALIFORNIA CORPORATION DEDICATED TO THE PURSUIT
OF PREMIUM TONE

WELCOME TO THE
65 AMPS Stone Pony
Experience!
We have gone to great effort to create the ultimate responsive and expressive guitar amp. The 65-
Stone Pony is completely hand-wired with the highest quality and select choice of transformers,
components and speakers.
GENERAL DESCRIPTION OF THE 65-Stone Pony AND ITS CONTROLS:
The 65-Stone Pony utilizes the EF86 tube on the input then feeds into a 12AX7/ECC83 driven tone
stage with BASS and TREBLE tone controls. There is a MASTER VOLTAGE that can be switched on
or off, giving the choice of a complete “non-master” type circuit or more output and gain control when
engaged, from full stage volume to practice levels.
The BUMP controls serve as a mid-range / gain boost, offering a completely different pallet of tones. It
can also function as a foot-switchable lead boost.
The BUMP function operates both with the MASTER VOLTAGE on or off. The Stone Pony offers
crystalline clear jangle (BUMP OFF) to screaming fat midrange (BUMP ON) to high-gain preamp
distortion scooped crunch with the MASTER VOLTAGE engaged (and BUMP OFF).
FRONT PANEL:
HI & LO INPUT –For powerful clean tones, try the LO input and turn up VOLUME to “5 to 8” with the
BUMP OFF. Great chime with single coil pickups.
VOLUME –Main input volume. With MASTER VOLTAGE disengaged, this control sets the amps
overall volume and gain, non-master style.
TREBLE & BASS –The tone stage. Higher levels of BASS and TREBLE and lower VOLUME will
give serious jangle tones. As you increase the VOLUME, you can decrease the BASS and TREBLE
levels to bring in more midrange and overdrive. These controls decrease in effect when the BUMP
circuit is engaged.
BUMP ON/OFF SWITCH –Engages and disengages the BUMP circuit. This function is foot-
switchable with the footswitch jack on the rear panel.
BUMP TONE –Allows additional tone shaping of the BUMP circuit and increases or decreases the
level of treble.
BUMP LEVEL –A 6-way rotary switch that allows for different levels of BUMP tone. Set at “1” , BUMP
function adds mid-range and gain. As the BUMP increases from “2 - 6”, the BUMP level is increased.
As you increase the level up to “6” there is a significant level of midrange gain boost.
MASTER VOLTAGE –This control can serve in different ways. If you wish to use it to decrease your
volume to a comfortable level, dial up your sound first, then engage the MASTER VOLTAGE with the
ON / OFF switch and set to desired level. You may need to adjust the tone controls slightly, increasing
TREBLE to compensate for the MASTER VOLTAGE and significantly lower output levels. If using the
MASTER VOLTAGE for high-gain preamp distortion, engage MASTER VOLTAGE and set to lower
levels (around “2 - 3” to start. Turn up input VOLUME to a higher setting (“8 - 10”). Adjust tone
controls. For more fat midrange introduce the BUMP control.
MASTER ON / MASTER OFF –Engages or disengages the MASTER VOLTAGE circuit. In the OFF
position, the MASTER VOLTAGE is entirely out of the circuit and the amp is purely “non-master”.

ON / STANDBY –Switches the amp from “STANDBY” to functioning “ON”. Best turn the AC power
switch to “ON” first and wait about 30 seconds before turning STANDBY to “ON”. This will prolong
tube life. When turning the amp off, switch AC power to “OFF” first. This allows the power to drain out
of the amp circuit.
INDICATOR –Indicates amp power status. If this light does not come on when switching on the amp,
double-check your AC power source or check to see if the MAINS FUSE is blown.
CAUTION: UNPLUG THE AMPLIFIER FROM AC POWER BEFORE CHECKING THE FUSE!!!
If the fuse is blown, this indicates either a problem with your AC source or with the amplifier.
ONN / OFF –The AC power ON / OFF switch.
REAR PANEL:
FOOTSWITCH –this is a mono jack that activates the BUMP circuit.
IMPEDANCE –all 65 Amps 212-Combos and Extension Cabinets are wired for 16-ohms (two 8-ohm
speakers in series / 2x12 or one 16-ohm speaker / 1x12). If using two 16-ohm cabinets, set
IMPEDANCE to 8-ohms. Always be sure to match the impedance of this amplifier with the impedance
of the speaker cabinet you are using. The Stone Pony is switchable between 8and 16 ohms.
SPEAKER OUTPUTS –Two speaker outputs in parallel.
H.T. FUSE (SLO-BLO) - This slow-blow type fuse is in line with the DC voltage in the amp (H.T.
stands for “High Tension”). When the H.T. FUSE blows, it is typically a sign of a bad power tube.
Correct amperage of the H.T. FUSE is written on the chassis.
MAINS FUSE (SLO-BLO) - This slow-blow type fuse is connected to the AC primary side of the Power
Transformer. Correct amperage of the MAINS FUSE is written on the chassis.
CAUTION –NEVER USE A FUSE WITH A HIGHER AMPERAGE RATING. NEVER
REPLACE A FUSE WITH ALUMINUM FOIL OR OTHER CONDUCTIVE MATERIAL.
DOING SO IMPOSES EXTREME DANGER, POTENTIALLY DAMAGING THE AMPLIFIER
AND VOIDS WARRANTY.
TUBES: (from left-to-right looking from the rear)
PRE-AMP TUBES: EF86 –12AX7 (ECC83) –12AX7 (ECC83)
POWER TUBES: 7591 –7591 (brand: JJ Electronic)
RECTIFIER: 5AR4
This amp is cathode-biased and requires no internal bias adjustment when replacing the 7591 power
tubes. You can use any brand of 7591 tube in this amp. However, after extensive experimenting with
the current production tubes, our favourite 7591 tube for this amp is from the JJ brand.
IMPORTANT: We recommend a qualified technician for re-tubing. Tubes using the same size socket
can have very different wiring configurations and voltages. Placing the wrong tube in the wrong socket
can cause damage to the amplifier and the tube.

PLEASE READ THE FOLLOWING WARNINGS AND USER ADVICES!
Always make sure the AC voltage selector (when present) is set for the proper voltage (120 Volts in
the U.S.) before turning on the amplifier! Correct voltage is written on the rear panel of the chassis.
Always make sure the amplifier is grounded (3-pong connector –no ground lifts)!
Use only a high quality grounded 3-pong AC power cable with this unit! Always look for breaks or
exposed wire and replace if defective or damaged!
Never remove the chassis from the cabinet! The amplifier will store high voltages long after the amp
has been turned off and disconnected from the AC!
Changing tubes does not require any internal adjustments. Refer all service to a qualified technician!
Do not expose to excessive humidity, direct sunlight or extreme high or low temperatures!
Be certain there is adequate ventilation around the amplifier!
Never expose to liquids or excessive dust!
Enjoy your 65 Amps Stone Pony!
For any further assistance, please do not hesitate to contact us directly:
65Corp
11439 Vanowen Street
North Hollywood, CA 91605
www.65amps.com
818-766-4265
678-623-3365
[email protected]
[email protected]