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3rd Power BRITISH DREAM 112 COMBO & HEAD User Manual

Made by: 3rd Power
Type: User Guide
Category: Amplifier
Pages: 16
Size: 1.77 MB

 

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U S E R S   G U I D E

1 1 2   C O M B O   &   H E A D

45 W

20 W

POWER

OFF

S

T

D

B

Y

A M P L I F I C A T I O N

INPUT

VOLUME

MIDDLE

TREBLE

PRESENCE

BASS

INPUT

OFF

VOLUME

BRILLIANCE

TOP CUT

BRITISH

DREAM

‘59 AC

‘68 Plexi

BRITISH

DREAM

 


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2

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 con-
forms 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 ampli-
fier cabinet.

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 
soft cloth.

 


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3

Thank you for choosing 3RD 
POWER as an integral compo-
nent of  your musical journey. 

Music is a thrilling blend of  
tone, attitude and technique. 
When the right combination 
occurs, magic happens and it’s 
experienced by everyone. 

I’ve had the extraordinary 

privilege of  performing music for 30 years on stage and in the studio. 
As the principal visionary of  the company, every product we design re-
flects my energy, attitude and life experiences. 

Each amplifier we create is designed to help you tell your musical story 
- IN 3D!!!

Rock on!
- James Scott

MOVING FORWARD... IN 3D

 


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4

Special Features:

• Hand-built and hand-wired in the USA
• Dual Channel All-Tube design
• Selectable 45

W

/20

W

 EL34 Power Amp section

• ’59 AC’ Channel EF86 Preamp Pentode topology with Volume, Bril-

liance and High Cut controls

• ’68 Plexi’ Channel 12AX7 Preamp Triode topology with Volume, 

Treble, Middle and Bass controls

• Global Presence control
• 112 Combo Version features patent-pending SWITCHBACK™ 

speaker enclosure design

Dimensions & Weights:

Subject to change anytime. Please measure your amp carefully if  a Cus-
tom Case is being made. These measurements do not include handle 
and rubber feet.

Dimensions (WxHxD):  25 x 22.85 x 10.5 in.
Weight:  57 lb.

 


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5

Preparing to Operate your British Dream™

Make certain that all connections are made prior to operating your 
British Dream™ Amplifier including power cable, speaker connection, 
instrument cable and instrument connection. Make certain that all 
tubes are installed.

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 CENTER 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 operating in 45

W

 (pentode) mode. In the DOWN position, the am-

plifier is operating in 20

W

 (triode) mode.

Presence Control (3)

The global PRESENCE control affects both channels and allows you to 
adjust the character or ‘forwardness’ of  your sound. Low settings cre-
ate ‘darker’ tones, whereas higher settings create a ‘brilliant’ or crisp 
sound.

Front Panel:

1

2

3

45 W

20 W

POWER

OFF

S

T

D

B

Y

A M P L I F I C A T I O N

INPUT

VOLUME

MIDDLE

TREBLE

PRESENCE

BASS

INPUT

OFF

VOLUME

BRILLIANCE

TOP CUT

BRITISH

DREAM

‘59 AC

‘68 Plexi

 


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6

Input Jack (4)

The INPUT jack is where you connect instrument level signals. 

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. 
The ’59 AC channel has been optimized to provide superb versatility 
emphasized to deliver rich low frequencies, broad mid-range frequen-
cies and chiming high frequencies.

Brilliance Control (6)

The BRILLIANCE control allows you to adjust the tonal emphasis of  
your sound from ‘wide’ to ‘narrow’. 

• “OFF” Position: Wide and full range of  frequencies. Excellent 

choice for single coil and P90 or similarly equipped electric guitars.

• “1” Position: Gentle roll-off  of  low frequencies. Excellent choice 

with humbucking equipped electric guitars.

• “2” Position:  Dramatic roll-off  of  low and low mid frequencies. 

Excellent choice with all electric guitars to achieve an authentic 
British Invasion guitar sound.

Top Cut Control (7)

The TOP CUT control allows you to adjust the tonal emphasis of  your 
high frequencies. This control also works in conjunction with the 
VOLUME and BRILLIANCE control and will have a subtle yet sub-
stantial affect on the level of  perceived instrument gain. 

Front Panel: ’59 AC Channel

5

6

7

4

INPUT

OFF

VOLUME

BRILLIANCE

TOP CUT

‘59 AC

 


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7

Input Jack (8)

The INPUT jack is where you connect instrument level signals. 

Volume Control (9)

The VOLUME control allows you to adjust the signal level as well as 
the temperament and overall character of  your instruments sound. The 
’68 Plexi channel has been optimized to provide superb versatility with 
a particular emphasis on tight mid-range frequencies to deliver a wide 
range of  clean, crunch to vintage overdrive and sustain.

Treble Control (10)

The TREBLE control allows you to adjust the character of  the higher 
frequency range. The TREBLE circuitry has been optimized to deliver 
excellent high frequency character while retaining a smooth tempera-
ment.

Middle Control (11)

The MIDDLE control allows you to adjust the emphasis of  the mid-
range frequencies. The MIDDLE circuitry has been optimized to de-
liver excellent ‘in your face’ character while retaining a vintage, warm 
or smooth temperament.

Bass Control (12)

The BASS control allows you to adjust the depth of  your lower fre-
quencies. The BASS circuitry has been optimized to provide focussed 
yet rich low frequencies.

Front Panel: ’68 Plexi Channel

8

9

10

11

12

VOLUME

MIDDLE

TREBLE

BASS

INPUT

‘68 Plexi

 


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8

AC Input (13)

The AC INPUT socket (TYPE IEC Grounded) is a required connec-
tion for operating your BRITISH DREAM™ at 120V (standard USA 
household electrical power). 

Mains Fuse (14)

The MAINS FUSE requires a 2 AMP fast-acting fuse. This fuse pro-
tects your amplifier from voltage peaks from your power outlet.  

H.T. Fuse (15)

The H.T. FUSE requires a .5 AMP (500 milliamp) slow-blow fuse. The 
H.T. FUSE usually blows if  your power tubes are bad to protect the 
circuit from being damaged. 

SAFETY NOTES

:

1) Always plug your amp into a properly grounded 3 prong AC out-

let. 

2) Never plug your amp into an ungrounded outlet. 
1) Never remove or break off  the 3rd prong safety ground pin 

from the power cord. 

1) Never use a damaged or ungrounded power cord.
2) Always use the proper value and type fuse according to the rear-

panel markings.

3) Never attempt to replace the fuse while the amplifier is still 

plugged into the power source. The fuse should only be re-
placed when the power cord has been disconnected from its 
power source.

13

15

14

Back Panel:

 


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9

16-OHM Speaker Output (16)

The 16-OHM SPEAKER OUTPUT is provided for connecting your 
amplifier to standard 16 OHM speaker cabinet.

8-OHM Speaker Output (17)

The 8-OHM SPEAKER OUTPUT is provided for connecting your 
amplifier to single 8-OHM speaker, such as the internal speaker for the 
combo unit.

4-OHM Speaker Outputs (18)

The two (2) 4-OHM DISCREET SPEAKER OUTPUTs are provided 
for connecting your amplifier to single 4-OHM speaker cabinet or for 
connecting two (2) 8-OHM speaker cabinets in parallel.

SAFETY NOTES

:

1) Never operate your amplifier without a connected speaker cabi-

net. This will damage your tubes or transformers - or both. 

2) Always operate your amplifier with the proper impedance out-

put that matches your speaker cabinets(s). 

3) In all cases, always use a good quality heavy gauge speaker cable 

(not a shielded instrument cable) to connect your BRITISH 
DREAM to the speaker cabinet(s).

Back Panel:

16

17

18

 


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10

HybridMASTER™ (16)

The HYBRID MASTER control allows you to set the overall volume 
level of  the amplifier independent of  the volume and tone settings es-
tablished on the front panel.  This is a patent-pending circuit design 
developed by 3rd Power and is available exclusively on Dream and 
Dream Solo series amplifiers.

Effects Insert (17)

The EFFECTS INSERT of  the DREAM SOLO is designed to allow 
you to insert an effects device (most often, time-based effects like delay 
or reverb) after the preamp and before the power amp. When no effects 
device is present, this circuit is completely bypassed to deliver a direct 
signal path between the preamp and power amp stage. 

OPERATION NOTES

:

1) This is a line-level effects insert that is best suited for profes-

sional rack-mount effects devices. 

2) Best performance is achieved by minimizing patch cable length.
3) When cable runs are over 5 - 10 feet it may be beneficial to use 

an external effects buffer device on the SEND connection.

Back Panel:

17

16

 


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SWITCHBACK™ 112 Design Concept

The BRITISH DREAM 112 combo version features our patent-
pending triangular speaker enclosure design. This design produces an 
outstanding sound-field unattainable with typical speaker enclosures 
with some very important additional benefits. 

Basically, we’ve embedded a triangular speaker chamber within a rec-
tangular exterior shell. This creates (3) three separate chambers. Each 
chamber creates a separate environment isolating the chassis, tubes and 
transformers from the speaker virtually eliminating rattles and 
vibration-born noises associated with speaker movement.

Chamber One (18)
Shows a chamber containing the transformers and output tubes.

Chamber Two (19)
Shows a chamber containing the speaker.

Chamber Three (20)
Shows a chamber containing the preamp tubes.

Operational Notes: SWITCHBACK™ Cabinet

18

20

19

EFFECTS INSERT

.5 AMP

 


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12

What can I do with a SWITCHBACK™ Cabinet?

The SWITCHBACK cabinet design allows you to go from CLOSED 
(21)
 to OPEN BACK (22) operation. 

The sound quality of  the OPEN BACK mode is wide and room-filling 
while the sound of  the CLOSED BACK mode is focussed and punchy. 

Low Frequency Roll-off

CLOSED-BACK mode begins rolling off  the lows at around 80Hz.
OPEN-BACK mode begins rolling off  the lows at around 60Hz.

Invaluable Stage and Studio Tool

In performance situations, you can control the amount of  low fre-
quency projection by choosing which mode to run. Some rooms are 
boomy or have boomy stages - a problem that the CLOSED-BACK 
mode would help solve. Some rooms are dull and just begging you to 
go with an OPEN-BACK setup to bring it to life!

In the studio, tracking different guitar parts in various combinations of 
open or closed back configurations with either 22w or 10w provides a 
ton of  variety in your guitar sounds without having to change the mic 
position or having to ‘work in’ another piece of  equipment.

Operational Notes: SWITCHBACK™ Cabinet

21

22

EFFECTS INSERT

.5 AMP

EFFECTS INSERT

.5 AMP

 


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13

Tube Layout and Requirements:

V1: JJ EF806 (Preamp Pentode)
V2 and V3: JJ 12AX7 (Preamp)
V4: Sovtek 12AX7LPS (Phase Inverter)
V4 and V5: Mullard “Reissue” EL34 output tubes

Bias Adjustment

Your BRITISH DREAM comes from the factory biased for EL34 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 THIS YOURSELF. 

Tube Replacement

WE RECOMMEND TAKING YOUR AMPLIFIER TO A QUALI-
FIED 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 volt-
age stored in the capacitors to give you a lethal electrical shock. 

WARNING:

1) Do not remove the back panel.
2) Do not attempt to check or replace tubes yourself. Refer to an author-

ized service center. 

3) Never touch the tubes while the amplifier is turned on or has recently 

been turned ON. You can severely burn your fingers and hands.

Operational Notes:

TUBE CHART

V3

V1

V4

V5

V4

V2

 


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LIMITED WARRANTY

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.

The BRITISH DREAM™ 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 re-
ceipt will establish coverage under this warranty. This warranty does not cover service or parts to re-
pair damage caused by accident, neglect, abuse, normal wear, disaster, misuse, over-powering, negli-

gence, 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 workman-

ship as warranted above, your sole remedy shall be repair or replacement as provided below.

Tubes: 3RD POWER warrants the original purchaser that the tubes used in the BRITISH DREAM 

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 di-

rectly to 3RD POWER. A Return Authorization Number must be obtained prior to shipping the prod-
uct. Contact 3RD POWER to obtain this RA number. Products must be shipped in their original pack-
aging 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  descrip-
tion of  the defect, along with your correct return address and telephone number.

When calling to inquire about a returned product, always refer to the RA number. If  3RD POWER de-
termines that the unit was defective in materials or workmanship at any time during the warranty pe-

riod, 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 con-

sequential 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 limi-

tation 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 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).

 


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3RD POWER Amplification LLC

2020 Fieldstone Parkway

Suite 900-316

Franklin, TN  37069

Phone: (615) 945-3393

Web Site

www.3rdPower.com

Friday, April 27, 2012