Fryette Pittbull Hundred/CL G-100-CL User manual

HUNDRED/CL
VACUUM TUBE GUITAR AMPLIFIER
MODEL G-100-CL
OWNERS MANUAL

WELCOME TO THE FAMILY
Congratulations and thank you for choosing the PITTBULL HUNDRED/CL Guitar Amplifier!
At Fryette Amplification, we know you are constantly searching for new sounds and new ways to improve your
existing sound. We understand the constantly evolving nature of artistic creativity and the search for the perfect
sound to complement your ever-widening musical vision. Providing the tools to help you to create your own
sonic signature is our primary mission.
The Pittbull Hundred/CL is designed for straight ahead players who prefer to rely on the guitar volume for the
clean sound. Two channels of unapologetic attitude with a 100-watt power plant, deliver thick touch sensitive
response with a decidedly British persuasion. This is a no-nonsense amplifier with a deceptively simple feature
set in which either channel can serve as a Clean, Crunch or Burn channel. The CL’s Red & Green channels
are similarly configured but voiced slightly differently for a wide palate of pristine clean, slightly dirty clean,
spanking crunch and aggressive but harmonically rich overdrive. Combined with an extremely expressive
graphic EQ, this allows for quick and intuitive sound sculpting.
Getting familiar with the Hundred/CL amplifier is easy, so don’t be terribly surprised when you find yourself up
and running in no time. First hand experience and real world application will yield the ultimate satisfaction of
finding your own path of comprehension and self-expression.

FRONT PANEL FUNCTIONS
FRONT PANEL, LEFT TO RIGHT
1. INPUT HI - High sensitivity input (also has a brighter tone).
2. INPUT LOW - Low sensitivity input (also has a slightly darker tone).
3. CHANNEL SELECT – Front panel channel switching function. Button must be OUT for footswitch to operate.
RED CHANNEL CONTROLS
4. GAIN - Amount of overdrive on RED Channel.
5. HI GAIN – Gain Stacking Switch. Activates additional tube overdrive gain stage. Normal = 3 stages, Hi = 4 stages.
6. VOLUME – Channel Master. Sets the amount of volume on RED Channel. Pre FX loop.
7. BOOST - Switches from low gain (clean to slightly dirty) to medium gain (crunch to medium overdrive)
8. TREBLE – Passive High frequency equalization.
9. EDGE – Frequency-dependent gain boost. Enhances upper string harmonics and sustain.
10. MIDDLE – Passive Mid frequency equalization.
11. SHIFT - Shifts Treble, Middle and Bass shelving down (Mid Boost)
12. BASS – Passive low frequency equalization.
GREEN CHANNEL CONTROLS
13. GAIN - Amount of overdrive on GREEN Channel.
14. HI GAIN – Gain Stacking Switch. Activates additional tube overdrive gain stage. Normal = 3 stages, Hi = 4 stages.
15. VOLUME – Channel Master. Sets the amount of volume on GREEN Channel. Pre FX loop.
16. BOOST - Switches from low gain (clean to slightly dirty) to medium gain (crunch to medium overdrive)
17. TREBLE – Passive High frequency equalization.
18. EDGE – Frequency-dependent gain boost. Enhances upper string harmonics and sustain.
19. MIDDLE – Passive Mid frequency equalization.
20. SHIFT - Shifts Treble, Middle and Bass shelving down (Mid Boost)
21. BASS – Passive low frequency equalization.
GLOBAL CONTROLS
22. GRAPHIC EQ – 100Hz, 250 Hz, 630 Hz, 1.2KHz, 2.3KHz, 5KHz ±12 dB cut or boost per band. Activated by
rear panel pushbutton or footswitch.
23. MASTER VOLUME
– Global power amp volume control, post FX loop. Controls volume of all 3 channels.
24. STANDBY - Turns on high voltage to output section and selects between full-power or half-power
operation. Standby switch settings: II= Full Power (4 power tubes) ; 0= Standby, I= Half Power (2 power tubes).
25. MAINS – Switches main AC power on or off.

REAR PANEL FUNCTIONS
REAR PANEL, LEFT TO RIGHT
1. GROUND SWITCH – Select position which yields quietest operation. With a properly wired AC outlet and
factory supplied AC cord, this switch will not produce a noticeable difference.
2. AC MAINS INPUT – Connect to a grounded outlet in accordance with the voltage and frequency
specified on the rear panel of your amplifier.
Use only the factory supplied cord set or a UL approved equivalent type.
3. MAINS FUSE – Protects the amplifier from electrical faults. Replace only with type and rating specified
on the rear panel of your amplifier.
4. DC FUSE – Protects the power supply and output transformer from electrical faults. Replace only with
type and rating specified on the rear panel of your amplifier.
Warning! Replace only with same fuse type and rating.
5. POWER AMP MODE: MUTE - Deactivates power amp while leaving preamp active.
6. POWER AMP MODE: DUAL-CLASS – In Class AB mode all 4 power tubes operate in Class AB. In
DUAL-CLASS the 2 outside power tubes are Cathode Biased while the inside 2 remain in Class AB. This
produces a fatter midrange and smoother top and bottom end response.
7. IMPEDANCE SELECT - 4, 8 or 16 ohms. Example: Two 8 Ohm cabs = 4 Ohms, two 16 Ohm cabs = 8
Ohms.
8. SPEAKER OUTPUT – Parallel wired jacks. Impedance switch setting should equal total of all cabinet
impedances plugged into both jacks. “Use First” jack must be plugged in for output to operate.
9. LINE LEVEL - Power amp line level control.
10. LINE OUT - Power amp line out jack.
11. FOOTSWITCH – Connector for footswitch controller.
12. EQ IN/OUT SWITCH – Manual Bypass switch for Graphic EQ. Must be in OUT position for footswitch
function to operate.
13. EFFECTS - Activates F/X Loop. Also activated by footswitch jack.
14. EFFECTS RETURN - Overall level adjusted by Hi/Low switch, then feeds to EFFECTS LEVEL. Also
serves as power amp input.
15. SERIES/PARALLELSWITCH – Sets loop for Series or Parallel operation. See FAQs at www.vhtamp.com
foe a complete explanation about Series and Parallel loop operation.
16. EFFECTS LEVELSWITCH - Sets overall send and return level (LOW = -10dB, HI = 0dB).
17. EFFECTS SEND - Send level set by preamp volumes. Also serves as preamp output for recording and
slaving.
18. EFFECTS LEVEL/MIX - Sets return level for effects loop in Series Mode. Determines effects blend in
Parallel Mode
19. PRESENCE
- Active, all three channels
20. DEPTH
- Variable damping.

NOTE: When switching to half power mode (standby switch in Position I) impedance selector value can be
divided by two to compensate for the impedance mismatch caused by Half Power Mode.
EXAMPLE: Impedance setting “8” for 16 ohm speaker, Impedance setting “4” for 8 ohm speaker, etc. While
not necessary, it may help extend tube life and maintain low-end punch. Experiment with it both ways.
TUBE FUNCTION AND LOCATION CHART
Preamp tube locations are indicated by tube type on the rear panel of the chassis. Tube types are factory
selected for superior performance, consistent tone quality and reliability. While substituting other brands may
not cause damage to the amplifier this may affect amplifier performance in unpredictable ways. For best
performance, replace only with factory recommended tubes. Warning! Substituting other tube types is not
recommended.
Each 12AX7 has two sections/functions. Section A is shown first, Section B is second. Factory recommended
tubes are listed under each location. Numbering sequence is right to left looking at back of amp starting with
the row closest to front panel of amp.
V1 (shielded tube) Input Gain Stage 1 and signal splitter for both channels
12AX7WB Sovtek Gain Stage 2 for Green channel
12AX7 China Selected Use in place of WB if more gain is required.
V2 Gain Stage 2 for Red channel
12AX7 China Gain Stage 4 for Red and Green channels. Active when either Gain Switch is set to
HI.
V3 Gain Stage 3 for Red and Green channels
12AX7 China Tone Control Driver for Red and Green channels.
V4 Phase Inverter
12AX7 China
V5-8 Power Tubes
EL34B Mullard (Russia)
EL34 Svetlana (Russia)
EL34B China

TROUBLESHOOTING GUIDE
WON’T TURN ON
1. Make sure AC cord is securely connected at
both ends.
2. Verify the power source with something you
know works.
3. Check the mains fuse, and replace if
necessary (if it blows again, refer to
qualified service personnel).
NO SOUND
1. Check input cables.
2. Check volume controls.
3. Make sure the selected channel volume
and/or gain controls are turned up.
4. Check to see if the effects loop is engaged
and the level turned down.
5. Check speaker cable to see if it is
disconnected or shorted.
6. Make sure that the impedance selector is
fully engaged in its detent.
7. Check the standby switch.
8. Check the DC fuse. If blown, replace with a
F1A 250V fuse (if it blows again, refer to
qualified service personnel).
9. Check for blown speakers.
WONT SWITCH CHANNELS
1. Make sure footswitch is securely connected.
2. Make sure front panel channels switches
are in the OUT position when using
footswitch.
BOOST FOOTSWITCH FUNCTION NOT
OPERATING
1. Make sure footswitch is securely connected.
2. Front panel BOOST switch must be ON for
BOOST footswitch to operate.
EFFECTS FOOTSWITCH FUNCTION NOT
OPERATING
1. Make sure footswitch is securely connected.
2. Rear panel FX IN/OUT switch must be in
the OUT position for EFFECTS footswitch
to operate.
RUNNING HOT
1. Make sure that the unit has adequate
ventilation.
2. Make sure that the impedance selector is
set to the proper impedance.
3. Power tubes may be under-biased (refer to
qualified service personnel).
DISTORTION/LOSS OF POWER
1. Check the speakers.
2. Check the speaker cable for shorts.
3. Check the impedance setting.
4. Bypass effects connected to the loop.
5. Power tubes may be over-biased (refer to
qualified service personnel).
NO HEADROOM ON CLEAN SOUNDS
1. Global Master Volume set too low.
2. Check power tubes (SEE ABOVE).
BLOWING MAINS FUSE
1. Bad power tube or other internal power
supply component (refer to qualified service
personnel).
BLOWING DC FUSE
1. Check speakers and speaker cable.
2. Bad power tube or other internal component
(refer to qualified service personnel).
SPECIFICATIONS
MODEL: PITTBULL HUNDRED/CL
MODEL NUMBER: G100CL
POWER REQUIREMENT: 350W
POWER AMP OUTPUT:
High Power: 100W RMS @ 5% THD, 1kHz sine
into 8
Low Power 50W RMS @ 5% THD, 1kHz sine
into 8
INPUT IMPEDANCE: 1M
OUTPUT IMPEDANCE: 4/ 8/ 16
FUSES:
100V UNITS: MAINS T5A, 250V DC F1A, 250V
120V UNITS: T4A, 250V, DC F1A, 250V
220V-240V UNITS: T2A, 250V, DC F1A, 250V
FOOTSWITCH (Included): 4-button, (FC-5)
CHANNEL / BOOST/ EFFECTS/EQ
DIMENSIONS:
HEIGHT: 10.500 in (26.7 cm)
WIDTH: 29.250 in (74.3 cm)
DEPTH: 9.500 in (24.1 cm)
WEIGHT: 53 lb (24 kg)
Product specifications are subject to change without notice.

Certificate of Compliance
Restriction of the use of Hazardous Substances (RoHS)
We certify that all of our products (exceptions see listed below) are compliant with the European Union
Directive 2002/95/EC for the Restriction of the use of certain Hazardous Substances in Electrical and
Electronic Equipment (RoHS).
No Lead (Pb), Cadmium (Cd), Mercury (Hg), Hexavalent Chromium (Cr+6), PBB or PBDE is
intentionally added to these devices. Any trace impurities of these substances contained in the parts are
below the RoHS specified threshold levels.
All information provided in this Certificate of Compliance is accurate to the best of our knowledge as of
the date this Certification was issued.
Certificate of Compliance
Registration, Evaluation, Authorization and Restriction of chemicals (REACh)
We declare that all of our products are compliant with European Union Directive EC1907/206 for the
Registration, Evaluation, Authorization and Restriction of chemicals (REACh), and contain none or less
than 0.1% of the chemicals listed as hazardous chemicals in the REACh regulation. All information
provided in this Certificate of Compliance is accurate to the best of our knowledge as of the date this
Certification was issued.
Declaration of Conformity
EMC and Low Voltage Directive (CE)
Product Name: Pittbull Hundred/CL Amplifier
Model Number: G-100-CL
This is to certify that the product listed above complies with the following European Union Council Directives
and Standards relating to electromagnetic compatibility (EMC Directive 89/336/EEC) and the low voltage
Directive (73/23/EEC).
This declaration of conformity of the European Communities is the result of an examination carried out by
Electromagnetic Engineering Services, Inc. in accordance with European Standards EN 50081-1, EN 50082-1
and EN 60065 for low voltage, as laid down in Article 10 of the EMC Directive.
Steven Fryette Design, Inc
1201 South Flower Street
Burbank, CA 91502 USA

LIMITED WARRANTY
Subject to the obligations and exclusions found below, this product is warranted by Steven Fryette Design, Inc., (herein SFD)
against manufacturing defects in materials and workmanship for the period of Five (5) Years from the date of purchase, with
the exception of the tubes, fuses and speakers where applicable, which carry a 90 day warranty.
The warranty period commences on the date of purchase by the original user. Performance under this warranty must be
obtained at one of the following: an SFD Authorized Service Station, by returning the unit to the SFD factory with prior written
authorization, or (in countries outside of the United States) by a representative SFD distributor.
Obligations
1. This warranty will be honored only on the presentation of the original proof of purchase.
2. Transportation of the product to and from an authorized SFD service outlet is the responsibility of the user. Units
sent directly to the SFD factory for warranty repairs must be authorized by SFD and shipped prepaid.
Exclusions
1. This warranty shall not cover adjustment of consumer-operated controls as explained in the appropriate instruction
manual, or products that have been altered or have missing, or defaced serial numbers.
2. This warranty shall not apply to the appearance of accessory items including but not limited to, cabinets, cabinet
parts, or knobs.
3. This warranty does not apply to uncrating, setup, installation, or the removal and reinstallation of products for
repair.
4. This warranty shall not apply to repair or replacements necessitated by any cause beyond the control of SFD
including, but not limited to, any malfunction, defects, or failure caused by or resulting from unauthorized service or
parts, damaged or broken tubes, incorrect line voltage, improper maintenance, modification or repair by the user,
abuse misuse, neglect, accident, fire, flood, or other Acts of God.
5. Responsibility for the repair of any SFD product sold outside of U.S. boundaries is borne by the SFD representative in
that particular country or territory. Also, the warranty term and conditions may be different from those stated above.
Please contact the SFD distributor or dealer in your country for more information.
The foregoing is in lieu of all other expressed warranties, and SFD does not authorize any party to assume for it any other
obligation or liability. In no event shall SFD be liable for special or consequential damages arising from the use of this product,
or for any delay in the performance of this warranty due to causes beyond our control. Some states do not allow limitations on
how long an implied warranty lasts and/or do not allow the exclusion or limitation of consequential damages, so the above
limitations on implied warranty and consequential damages may not apply to you. This warranty gives you specific legal rights.
You may have other rights that vary from state to state.
STEVEN FRYETTE DESIGN, INC.
1201 S. FLOWER STREET
BURBANK, CA 91502
TEL [phone] FAX [phone]
www.sfdamp.com
Copyright 2009 Steven Fryette Design, Inc.