Johnson Musical Instruments T15-R User manual

Hybrid Tube Ampli er
Owner’s Manual
Model:
T15-R

HEAD
PHONES
-5 +5 -5 +5 -5 +5
INPUT
GAIN VOLUME BASS MIDDLE TREBLE REVERB
FOOT
SWITCH OFF
O
N
T15-R
0 10 0 10 0 10
O
N
2
1
2
3
4
5
6
7
8
9
10
11
Introduction
Thank you for purchasing our hybrid tube ampli er. Your “hybrid” ampli-
 er combines the unique tonal character of a tube preamp with the reli-
ability and consistency of a solid-state power section.
Please read this manual carefully and correctly before operating your new
ampli er.
Panel Functions
Input:
Used to connect the signal output from an electric guitar. (Always use an
undamaged, shielded instrument cable.)
12
1
2
3
Gain:
Use this control to adjust the preamp level & amount of distortion. Works
in combination with the Volume .
in combination with the Volume .
in combination with the Volume .
3
in combination with the Volume .
Volume:
Controls overall sound level of the ampli er.
BACK

3
4
5
6
7
8
Bass:
Use this control to adjust the
low
frequency level. Center position (straight
low frequency level. Center position (straight low
up) provides no cut or boost.
Middle:
Use this control to adjust the
middle
frequency level. Center position
(straight up) provides no cut or boost.
Treble:
Use this control to adjust the
high
frequency level. Center position
high frequency level. Center position high
(straight up) provides no cut or boost.
Reverb:
Use to adjust the amount of reverberation/re ection effect.
Footswitch:
Turns the Reverb on/off with single button footswitch (optional).
Turns the Reverb on/off with single button footswitch (optional).
Turns the Reverb on/off with single button footswitch (optional).
7
Turns the Reverb on/off with single button footswitch (optional).
10
11
12
Headphones:
Use this jack to connect headphones to the ampli er. (The speaker
is disengaged when headphones are being used.)
9
Power Light:
LED will illuminate when the power is turned “on”.
Power Switch:
This switch turns the unit “on” and “off”.
Power IEC Socket:
Use the power cord that is included with this unit, and in
accordance with the voltage and frequency ratings listed on this manual and rear
panel of your ampli er.
The following appropriate noise level has been speci ed by the U.S. Government’s Occupa-
tional Safety and Health Administration (OSHA) as acceptable exposure.
DURATION PER DAY IN HOURS
8
6
4
3
2
1
1/2 Hour or Less
SOUND LEVELS db FLOW RESPONSE
90
93
95
97
100
103
110
Panel Functions (cont.)
CAUTION NOTE: Your ears are valuable! There could be damage to your ears if you
listen at high volumes for long periods of time.

-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
4
Suggested Settings
Clean
Blues
Pushed Clean
Punk
Metal

-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
-5 +5 -5 +5 -5 +5
GAIN VOLUME BASS MIDDLE TREBLE REVERB
0 10 0 10 0 10
5
Rock
Jazz
Distorted
Surf
Suggested Settings (cont.)
Jazz

6
Technical Speci cations
Power Requirements & Consumption:
120VAC / 60Hz @ 40 Watts (Domestic U.S.)
230VAC / 60Hz @ 40 Watts (Export)
Output Power:
1% THD 12W RMS into 8
Ω
at 1kHz
10% THD 20W RMS into 8
Ω
at 1kHz
Frequency Response:
-3.0dB 130Hz to 8.8KHz
S/N:
50dB Unweighted 100mV input / 30kHz BW
Preamp Section:
1 - 12AX7WA / 7025 Tube
Speaker:
8” (20.3cm), 8
Ω
Alphatone Speaker
Tone Controls:
Bass +2.5/-3.5dB at 150Hz
Middle +2.5/-6.0dB at 600Hz
Treble +3.5/-7.0dB at 8kHz
Sensitivity (Full Gain):
2mV
Input:
” Mono Jack with 1M
Ω
Impedance
Footswitch:
” Mono Jack
Headphone:
” TRS Jack. Mono or Stereo ” Plug will work.
Reverb:
Mechanical Spring Reverb, Short Tank, Medium Delay
Dimensions:
13 ” (35cm)
W
x 15” (38cm)
W x 15” (38cm) W
H
x 8” (20cm)
H x 8” (20cm) H
D
Weight:
21.5 lbs. (9.76 kgs)

7
CAUTION: To reduce the risk of  re or electric
shock, do not expose this appliance to rain or mois-
ture. Dangerous high voltages are present inside the
enclosure. Do not open the cabinet. Refer servicing
to quali ed personnel only.
This symbol warns the user of dangerous voltage levels
localized within the enclosure.
This symbol advises the user to read all accompanying lit-
erature for safe operation of the unit.
Power Sources
This product should be operated only from the type of power source indicated on the marking
label. If you are not sure of the type of power supply to your home, consult your product dealer
or local power company.
Insertion Warning
Never place objects of any kind into this product, as they may touch dangerous voltage points
or short-out parts that could result in  re or electric shock. Never spill liquid of any kind on
the product.
Servicing
Do not attempt to service this product yourself as opening or removing covers may expose you
to dangerous voltage or other hazards. Refer all servicing to quali ed service personnel.
Heat
The product should be placed away from heat sources, such as radiators, stoves, or other prod-
ucts that produce heat.
Cleaning
Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol
cleaners. Use a damp cloth for cleaning.
Safety Check
Upon completion of any service repairs to this product, ask the service technician to perform
safety checks to determine that the product is in proper operating condition.
Important Safety Instructions

A PRODUCT OF
®
®
MUSICAL INSTRUMENTS
This amplifier is warranted, to the original Purchaser, to be free from defects
in material and workmanship for a period of five (5) years from the original
retail purchase. Tubes are warranted for ninety (90) days. This warranty is
valid in North America only.
The manufacturer shall, at its option, either repair or replace the defective
product if the product is returned to the original place of purchase. If any
product returned is not defective within this warranty, the manufacturer shall
so advise the Purchaser and thereafter shall dispose of said product in accor-
dance with the Purchaser’s instructions and at the Purchaser’s cost. This war-
ranty is not transferable by the Purchaser.
The warranty shall not apply to wearable parts, these items include, but are not
limited to, amplifier knobs, feet, and handles.
This warranty shall not apply if the product has been misused or damaged as
a result of neglect, abuse, alteration, improper handling, unauthorized repair
or modification, accident or causes external to the product, such as, but not
limited to, excessive heat or humidity.
The manufacturer’s sole and exclusive maximum liability for any claim by the
Purchaser, shall not exceed the wholesale value of the product. In no event
shall the manufacturer be liable for any indirect, incidental, collateral, exem-
plary, or consequential damages or losses arising out of the Purchaser’s pur-
chase of the product. The above limitations may not apply in some states.
Limited Warranty Information