Friedman Twin Sister User manual

INSTRUCTION)MANUAL)

Congratulations on purchasing this incredible new
guitar amplifier designed by one of the most well
known amp modders and designers in the LA
Music scene for the past 20 years, Dave Friedman.
Dave Friedman’s Dirty Shirley 40 Watt Head was
designed for guitarists that want a Vintage Classic Rock
tone inspired by British tube amps from the 60’s and
70’s. And what’s better than one Dirty Shirley? TWO
DIRTY SHIRLEYS! Introducing the Twin Sister.
It is based on a modified JTM 45 but still delivers the
signature British tone for which Friedman is best
known. The Twin Sister is a 40-watt, 5881 powered,
dual channel amp with two identical channels that can
give you everything from gorgeous sparkling cleans to
a glorious vintage crunch and beyond! Extremely
versatile, it is capable of producing many styles of
music from blues to rock and country by just adjusting
the structure, gain and master controls.
The Twin Sister features all the beautiful finishing and
solid construction that you would expect from a
Friedman amplifier. Designed to take pedals and loves
boosts, OD’s, phasers, flangers, tremolos and wahs,
while the ultra-transparent series effects loop handles
your time-based effects pedals and rack units.
The Twin Sister from Friedman Amplification, a real
screamer and she fits in your backseat!
• Hand-wired in the USA
• 40-Watt all tube head
• Two-Channel channel
• Bright Switch and 3-position Gain Switch
per Channel
• 2 x 5881 power tubes
• 5 x 12AX7 preamp tubes
• Gain, Master, Bass, Middle, Treble per
channel
• Global Presence and Deep knobs
• Three position gain structure switch
• Ultra transparent series FX loop
• 4, 8 and 16 ohm Impedance selector
switch
• Custom USA made transformers
• Limited Lifetime Warranty
• Dimensions: 8.5" (D) x 24" (W) x 9.5"
(H)Weight: 32 lbs.
PLUGGING IN
We recommend starting the amp with the Bass on
6, the mids at around 7 or 8 and the treble and
presence at 5. Set the gain around 6 and then
bring the master to taste. After plugging in, you
will notice instantly, the tight bottom end and rich
harmonically detailed chords and single notes,
that’s the Friedman sound. This amp cleans up
remarkably well with the guitar’s volume control
even with the amp on higher gain settings.
The Twin Sister was primarily designed as a
Classic Rock style amp. The Twin Sister will
surprise and impress you with all the different
tones available. If you want a classic rock sound
from the 60s and 70s, the Twin Sister might just
be your type of amp. Please visit the Friedman site
for video tutorials on the Twin Sister and sample
settings.
We know you will love your new Twin Sister. If you
have any questions or need help don’t hesitate to
email us at [e-mail].

INSTRUCTIONS
Please keep this instruction manual for future
reference and for the duration of owning this
Friedman Amplifier. Please carefully read and
understand the instructions inside this user’s
manual before attempting to operate your new
amp. This instruction manual includes essential
safety information regarding the use and
maintenance of the amplifier. Take special care to
heed all warning symbols and signs inside this
manual and those printed on the amplifier itself.
WARNING!
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT
EXPOSE THE AMPLIFIER TO WATER OR MOISTURE.
DO NOT OPERATE NEAR ANY WATER SOURCE
WHAT’S THE MEANING OF THIS?
The lightning flash with an arrow triangular
symbol is intended to alert the user to the
presence of non-insulated “dangerous voltage”
within the products enclosure, and may be of
sufficient magnitude to constitute a risk of electric
shock
WHAT’S THE MEANING OF THIS?
The exclamation point triangular symbol is
intended to alert the user to the presence of
important operating and maintenance (servicing)
instructions in the user manual accompanying this
amplifier!
1. Read Instructions – All the safety and operating
instructions should be read before this product is
operated.
2. Retain Instructions – The safety and operating
instructions should be retained for future
reference.
3. Heed Warnings – All warnings on the amplifier
and in the operating instructions should be
adhered to.
4. Follow Instructions – All operating and use
instructions should be followed.
5. Water and Moisture – The amplifier should not
be used near water – for example, a bathtub,
washbowl, kitchen sink, laundry tub, wet
basement, or near a swimming pool, and the like.
6. Heat – Amplifier should be situated away from
heat sources such as radiators, heat registers,
stoves, or other amplifier (including amplifiers)
that produce heat.
7. Power Sources – This product should be
operated only from the type of power source
indicated on the rating label.
If you are not sure of the type of power supply to
your home, consult your product dealer or local
power company.
8. Grounding or Polarization
– This product may be equipped with a polarized
alternation-current line plug (a plug having one
blade wider than the other). This plug will fit into
the power outlet only one way. This is a safety
feature. If you are unable to insert the plug fully
into the outlet, try reversing the plug. If the plug
should still fail to fit, contact your electrician to
replace your obsolete outlet. Do not defeat the
safety purpose of the polarized plug.
9. Power-Cord Protection
– Power-supply cords should be routed so that
they are not likely to be walked on or pinched by
items placed upon or against them, paying
particular attention to the cord in correspondence
of plugs, convenience receptacles, and the point
where they exit from the amplifier.
10. Cleaning – The amplifier should be cleaned
only as recommended by the manufacturer. Clean
by wiping with a cloth slightly damp with water.
Avoid getting water inside the amplifier.
11. Non-use Periods – The power cord of the
amplifier should be unplugged from the outlet
when left unused for a long period of time.
12. Object and Liquid Entry
– Care should be taken so that objects do not fall
and liquids are not spilled into the enclosure
through openings.
13. Damage Requiring Service
– The amplifier should be serviced by qualified
service personnel when:

A. The power-supply cord or the plug has been
damaged; or
B. Objects have fallen, or liquid has been spilled
into the amplifier; or
C. The amplifier has been exposed to rain; or
D. The amplifier does not appear to operate
normally or exhibits a marked change in
performance; or
E. The amplifier has been dropped, or the
enclosure damaged.
F. The amplifier needs tube replacement or
biasing
14. Servicing – The user should not attempt any
service to the amplifier beyond that described in
the operating instructions.
All other servicing should be referred to qualified
service personnel.
15. Ventilation – Slots and openings in the cabinet
are provided for ventilation and to ensure reliable
operation of the product and to protect it from
overheating, and these openings must not be
blocked or covered.
16. Attachments – do not use attachments not
recommended by the product manufacturer as
they may cause hazards.
17. Accessories – Do not place this product on an
unstable cart, stand, tripod, bracket, or table. The
product may fall, causing serious injury to a child
or adult, and serious damage to the product. Use
only with a cart, stand, tripod, bracket, or table
recommended by the manufacturer, or sold with
the product.
18. Lightning – For added protection for this
product before a lightning storm, or when it is left
unattended and unused for long periods of time,
unplug it from the wall outlet. This will prevent
damage to the product due to lightning and power
line surges.
19. Replacement Parts – When replacement parts
are required, be sure the service technician has
used replacement parts specified by the
manufacturer or have the same characteristics as
the original part. Unauthorized substitutions may
result in fire, electric shock, or other hazards.
20. Safety Check – Upon completion of any service
or repairs to this product, ask the service
technician to perform safety checks to determine
that the product is in proper operating condition.
21. FUSES – Always use the correct rating and type
of fuse as indicated on the rear panel. Note the
proper rating fuse is determined by the AC line
voltage in the country this unit is being operated.
CAUTIO

FRONT PANEL
POWER SWITCH: Turn this ON to power the amplifier. Wait for about one minute before taking the amp
OUT of STANDBY playing for maximum tube life. There is an indicator lamp to provide a gentle
reminder to let you know your amp is ON.
STANDBY SWITCH: Turn ON this switch to put the amp in play mode. Wait a minute before turning this
on for maximum tube life.
PRESENCE CONTROL: (Global) This adds or takes away upper mids and highs. Start at about 5 and adjust
to taste. This pot will have a scratchy sound. This is normal.
DEEP CONTROL : (Global) Adjusts the low-end response in the power section.
BASS CONTROL : (Separate-each channel) This adds or takes away bass or bottom end. As the amp gets
louder you may want to back this off a bit. Start at 5 and adjust to taste.
MIDDLE CONTROL : (Separate-each channel) Adds or takes away midrange. Start at 7-8, lower settings
will scoop the mids, higher levels will allow your audience to actually hear the guitar in the mix.
TREBLE CONTROL: (Separate-each channel) This adds or takes away treble. Start at 5 and adjust to
taste.
MASTER CONTROL : (Separate-each channel) This is the Twin Sister’s MASTER VOLUME. The more you
turn it up the louder it gets.
GAIN CONTROL: (Separate-each channel) This adds gain/distortion. Adjust to taste. Don’t be afraid.
B1-B2 & S1-S2: Bright Switch and 3-position Gain Switch per Channel.
IN: Just like it says. This is the Twin Sister’s Guitar Input Jack. Plug your guitar or the output of your
pedal board here.
SW: Footswitch plugs in here.

REAR PANEL
SEND JACK: This is where you plug the INPUT of your Effect(s). Use a high quality shielded guitar cable.
RETURN JACK: This is where you plug the OUT of your Effect(s). Use a high quality shielded guitar cable.
SPEAKER OUT JACKS (2): Plug in your speaker cab(s) here. Use Speaker cable ONLY.
IMPEDANCE SELECTOR SWITCH: Select the correct speaker cab impedance with this selector switch.
MAIN FUSE: This fuse is in the compartment found below the AC receptacle. Replace with a 3 Amp slo
blow fuse for 120V or 1.5 Amp slo blow for 230V. This most likely is the result of a bad tube. Constant
blowing of this fuse (even when using new tubes) is an indication that something could be seriously
wrong with your amp. STOP and call us so we may help you diagnose.
HT FUSE: Replace with a 1 Amp fuse for 120V or a 500ma fuse for 230v. If this blows it is likely a bad
power tube as well.

FRIEDMAN LIMITED LIFETIME WARRANTY
Thank you for choosing Friedman. Friedman
manufactures some of the world’s most reliable
hand-wired, all-tube amplifiers and speaker
cabinets. Friedman takes great pride in an
extremely thorough testing procedure, which is
implemented on each product prior to shipment.
In the unlikely event that you have a problem
with you amplifier, please refer to warranty
below. Friedman stands behind our products like
no other and we’re here to help you!
AMPLIFIERS: Friedman offers a limited lifetime
warranty to the original purchaser that a Friedman
amplifier will be free from defects in material and
workmanship. A dated sales receipt will establish
coverage under this warranty, PLEASE KEEP YOUR
PROOF OF PURCHASE TO USE YOUR WARRANTY.
This warranty does not cover service or parts to
repair damage caused by accident, neglect, abuse,
normal & wear, disaster, misuse, abuse, over-
powering, negligence, inadequate packing or
shipping procedures and service, repair or any
modifications to the product which have not been
authorized or approved by Friedman in writing.
ANY MODIFICATION TO THE AMPLIFIER WILL
VOID YOUR WARRANTY. If this product is
defective in materials or workmanship as
warranted above, your sole remedy shall be repair
or replacement by Friedman as provided below.
CAUTION: Do NOT attempt to repair, modify or
service your amplifier by yourself!!! Please read
the instruction manual for all safety notifications,
warnings and instructions. Friedman, like all tube
amplifiers, have extremely high voltages that can
cause serious injury or death. Do not remove the
chassis from the amplifier. All repair and service
work must be performed by Friedman or an
authorized service center of Friedman. ANY
UNAUTHORIZED REPAIRS WILL VOID YOUR
WARRANTY.
TUBES: Friedman warrants the original purchaser
that the specific tubes used in Friedman will be
free from defects in material and workmanship for
a period of 90 days from the original date of
purchase. A dated sales receipt will establish
coverage under this warranty. This tube warranty
will automatically terminate 90 days after the
original retail sales date. This tube warranty is in
lieu of all other expressed warranties. If tubes fail
within the 90 day warranty period your sole
remedy shall be replacement of tubes as provided
below.
RETURN PROCEDURES: In the unlikely event that a
defect occurs please email us at
[email protected]. In most cases we can
help you diagnose the problem over the phone. If
a product must be sent to us, please follow the
procedure outlined below.
• Defective products must be shipped,
together with proof of purchase, freight
pre-paid and insured to the Authorized
Friedman Service Center or directly to
Friedman.
• If a product must be returned to Friedman
for warranty replacement/repair, a Return
Authorization Number must be obtained
from our Customer Service Department
prior to shipping the product.
• Please contact Friedman Customer Service
Department for the Authorized Friedman
Service Center nearest you.
• Products must be shipped in their original
packaging or its equivalent; in any case,
the risk of loss or damage in transit is to be
borne by the purchaser.
• The Return Authorization 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 telephone number.
• When calling to inquire about a returned
product, always refer to the Return
Authorization Number.

If Friedman determines that the unit was
defective in materials or workmanship at any time
during the warranty period, Friedman has the
option of repairing or replacing the product at no
additional charge, except as set forth below.
• All replaced parts become a property of
Friedman. Products replaced or repaired
under this warranty will be returned via
ground shipping within the United States
or Canada - freight prepaid.
• Friedman is not responsible for costs
associated with expedited shipping, either
to Friedman or the return of the product to
the customer.
All warranty repairs outside the United States and
Canada must be directed to the dealer or
distributor from which you purchased the
product.
INCIDENTAL OR CONSEQUENTIAL DAMAGE: In no
event will Friedman be liable for any incidental or
consequential damages arising out of the use or
inability to use of any Friedman product, even if a
Friedman 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 state.
FOR YOUR PROTECTION: Please complete and
send in the completed warranty registration card
to: Friedman Amplification, care of Boutique
Amps Distribution, 3383 Gage Ave., Huntington
Park, CA 90255. Please send within (10) ten days
of the date of purchase so that we may contact
you directly in the event a safety notification
issued in accordance with the 1972 Consumer
Product Safety Act.
CUSTOMER SUPPORT: Our dedicated and friendly
staff is ready to help you with any warranty or
product questions you may have. Please email us
at [email protected].
Thank you again for choosing Friedman and we
look forward to a long relationship!
www.FriedmanAmplification.com