What to enter in the boxes above?
First Box:
Please enter the desired Type and Sound Numbers separated by a hyphen. The correct and up-to-date codes can be located here, individual pages for diesel, electric, and steam are available. Example: The diesel chart here shows your loco with type number 1050 and sound number 201. You would then enter 1050-201 into the first box above. Alternatively enter Any Sound File to the first box if you have no preference or wish to program the decoder yourself.
Second Box:
The QSI Revolution–A Sound Decoder comes with a 1.0” speaker. If a different speaker is specified the difference in speaker cost will be added to the price of the decoder. Please enter the speaker type if other than 1.0” provided.
For further assistance please contact us.

If enclosure is required, this must be ordered separately.

See Revolution-U (Universal format)

Aftermarket HO DC/DCC Sound Decoder System
Quantum Revolution has been developed for installation in existing non-sound HO engines. By taking the large capacitor off the board, making the unit smaller, adding components to keep the board running cool, and giving customers options for CAM or Back EMF motor speed detection as well as programming for different speaker arrangements, we can offer the proven QSI Quantum System in a package that will be easier to install in more engines.

U.S. Reissue Patent Number RE38,660.

Quantum Revolution Specifications
Dimensions:
Revolution-A - 2.86"L x 0.66"W x 0.21"H
Revolution-U - 1.86"L x 0.66"W x 0.25"H
Revolution-U/W - 1.80"L x 0.66"W x 0.21"H
Revolution-A/U - 2.18"L x 0.66"W x 0.25"H
Maximum Peak Voltage: 25 V
Steady State Current: 1.3 A
Stall Current: (1 sec): 2+ A
Speaker Load: 8/16 ohm or 2, 8 ohm in Parallel
Audio Amplifier: Advanced D Style Format 2 Watts
Light Outputs: 6 with 256 intensity levels ea.
Function Current: 100 mA
Downloadable Sound Files: Cut/Paste and Edit Sound Files

DECODER FEATURES
Compatible with the NMRA DCC Standards and RPs
Supports 2 and 4 Digit Addressing
Programmable acceleration, deceleration, starting voltage
Speed calibration, 1 Scale MPH
Supports programming on the main with Stat Chat, audible feed back
Supports read-back on Programming Track
Optional Magnetic Reset to Defaults
Analog Control using the Quantum Engineer
I/O: Revolution-U: 9 pin and 8 Pin JST for additional function outputs
Co-Processor Technology

THROTTLE FEATURES
Supports 14, 28, and 128 speed step modes
Speed interpolation provides super smooth 128 speed step response
Programmable acceleration, deceleration, starting voltage
7 bit consist addressing (CV-19)
High Frequency Silent Motor Drive
BEMF/Load Compensation
RTC Regulated Throttle Control, self adjusts locomotives in a consist - an exclusive Quantum feature!
Braking Effects - see above.

SOUND FEATURES
8 Sound Channels
High quality 16 bit digital sound
Individual, adjustable volume controls
1-2 Watt audio amplifier
Polyphonic Sound Processor
Doppler Effect
Break Squeal
Air Brakes
Stat Chat, Verbal Audible response to programming commands
Steam Cocks
Cam Input
Sound of Power by Load Conditions
Sound of Power By Function Command
Improved Notching and Transitions
Improved Chuff See Above

Quantum Revolution-A Lighting Hints/Tips
QSI Atlas Decoder Tester!
Revolution vs. Tsunami
GWire Receiver for Other Decoder Applications

More info at QSI Solutions web site (all external links):
How to Hear and Play Sound Files
Model Railroader Reviews Quantum Revolution-A
QSI Revolution-A Installation in Kato C44-9W
QSI Revolution-A Installation in Athearn Genesis FP45/F45
QSI Revolution-A User Manual (PDF)
QSI Revolution Main Page
Quantum Revolution Decoder Style and Recommended Speaker Applications
Quantum Revolution Sound Set IDs
Quantum Revolution-A Beta Tester Comments
QSI Revolution Extended Bass Motor Sounds
Throttle and Cutoff Modes

What to enter in the boxes above?
First Box:
Please enter the desired Type and Sound Numbers separated by a hyphen. The correct and up-to-date codes can be located here, individual pages for diesel, electric, and steam are available. Example: The diesel chart here shows your loco with type number 1050 and sound number 201. You would then enter 1050-201 into the first box above. Alternatively enter Any Sound File to the first box if you have no preference or wish to program the decoder yourself.
Second Box:
The QSI Revolution-U Sound Decoder comes with a 1.0” speaker. If a different speaker is specified the difference in speaker cost will be added to the price of the decoder. Please enter the speaker type if other than 1.0” provided. For further assistance please contact us.

If enclosure is required, this must be ordered separately.

See Revolution-A (Atlas format)

Aftermarket HO DC/DCC Sound Decoder System
Quantum Revolution has been developed for installation in existing non-sound HO engines. By taking the large capacitor off the board, making the unit smaller, adding components to keep the board running cool, and giving customers options for CAM or Back EMF motor speed detection as well as programming for different speaker arrangements, we can offer the proven QSI Quantum System in a package that will be easier to install in more engines.

U.S. Reissue Patent Number RE38,660.

Quantum Revolution Specifications
Dimensions:
Revolution-A - 2.86"L x 0.66"W x 0.21"H
Revolution-U - 1.86"L x 0.66"W x 0.25"H
Revolution-U/W - 1.80"L x 0.66"W x 0.21"H
Revolution-A/U - 2.18"L x 0.66"W x 0.25"H
Maximum Peak Voltage: 25 V
Steady State Current: 1.3 A
Stall Current: (1 sec): 2+ A
Speaker Load: 8/16 ohm or 2, 8 ohm in Parallel
Audio Amplifier: Advanced D Style Format 2 Watts
Light Outputs: 6 with 256 intensity levels ea.
Function Current: 100 mA
Downloadable Sound Files: Cut/Paste and Edit Sound Files

DECODER FEATURES
Compatible with the NMRA DCC Standards and RPs
Supports 2 and 4 Digit Addressing
Programmable acceleration, deceleration, starting voltage
Speed calibration, 1 Scale MPH
Supports programming on the main with Stat Chat, audible feed back
Supports read-back on Programming Track
Optional Magnetic Reset to Defaults
Analog Control using the Quantum Engineer
I/O: Revolution-U: 9 pin and 8 Pin JST for additional function outputs
Co-Processor Technology

THROTTLE FEATURES
Supports 14, 28, and 128 speed step modes
Speed interpolation provides super smooth 128 speed step response
Programmable acceleration, deceleration, starting voltage
7 bit consist addressing (CV-19)
High Frequency Silent Motor Drive
BEMF/Load Compensation
RTC Regulated Throttle Control, self adjusts locomotives in a consist - an exclusive Quantum feature!
Braking Effects - see above.

SOUND FEATURES
8 Sound Channels
High quality 16 bit digital sound
Individual, adjustable volume controls
1-2 Watt audio amplifier
Polyphonic Sound Processor
Doppler Effect
Break Squeal
Air Brakes
Stat Chat, Verbal Audible response to programming commands
Steam Cocks
Cam Input
Sound of Power by Load Conditions
Sound of Power By Function Command
Improved Notching and Transitions
Improved Chuff See Above

Revolution vs. Tsunami

More info at QSI Solutions web site (all external links):
How to Hear and Play Sound Files
QSI Revolution Main Page
QSI Revolution-U User Manual (PDF)
Quantum Revolution Decoder Style and Recommended Speaker Applications
Quantum Revolution Sound Set IDs
QSI Revolution Extended Bass Motor Sounds
Throttle and Cutoff Modes
GWire Receiver for Other Decoder Applications

Quantum Revolution-U/W is Quantum Revolution-U without the 8 and 9 pin JST board connectors, but with the I/O wires soldered directly to the board. The overall max board height is less than 0.210". See the specs and details above.
Size: 1.80"L x 0.66"W x 0.21"H

What to enter in the boxes above?
First Box:
Please enter the desired Type and Sound Numbers separated by a hyphen. The correct and up-to-date codes can be located here, individual pages for diesel, electric, and steam are available. Example: The diesel chart here shows your loco with type number 1050 and sound number 201. You would then enter 1050-201 into the first box above. Alternatively enter Any Sound File to the first box if you have no preference or wish to program the decoder yourself.
Second Box:
The QSI Revolution-U Sound Decoder comes with a 1.0” speaker. If a different speaker is specified the difference in speaker cost will be added to the price of the decoder. Please enter the speaker type if other than 1.0” provided. For further assistance please contact us.

If enclosure is required, this must be ordered separately.

Quantum Revolution-A/U is a hybrid combination of the Revolution-A and the Revolution-U. Shorter than the standard -A, but a little longer than the -U. It has the diesel style motor mount tab holes for easy mounting to most popular diesels. The 8 and 9 pin JST detachable wire harnesses are retained but moved outward a little to accommodate the mounting holes.
Size: 2.18"L x 0.66"W x 0.25"H

What to enter in the boxes above?
First Box:
Please enter the desired Type and Sound Numbers separated by a hyphen. The correct and up-to-date codes can be located here, individual pages for diesel, electric, and steam are available. Example: The diesel chart here shows your loco with type number 1050 and sound number 201. You would then enter 1050-201 into the first box above. Alternatively enter Any Sound File to the first box if you have no preference or wish to program the decoder yourself.
Second Box:
The QSI Revolution-U Sound Decoder comes with a 1.0” speaker. If a different speaker is specified the difference in speaker cost will be added to the price of the decoder. Please enter the speaker type if other than 1.0” provided. For further assistance please contact us.

If enclosure is required, this must be ordered separately.

In stock and shipping!
Aristocraft Plug-In Sound Decoder
DC, DCC, (add optional GWire™)
U.S. Reissue Patent Number RE38,660.
How to Hear and Play Sound Files (ext.)
G Scale Upgrade Software Item Numbers and Sound Files (ext.)
More Info | Installation | K27 Installation | Users Manual (ext.) | Specifications | Q2 Upgrade Manual (ext.)
What to enter?
Please enter the desired Type and Sound Numbers separated by a hyphen. The correct and up-to-date codes can be located here, individual pages for diesel, electric, and steam are available.
Example: The diesel chart here shows your loco with type number 1008 and sound number 201. You would then enter 1008-201 into the box above. Alternatively enter Any Sound File to the first box if you have no preference or wish to program the decoder yourself. For further assistance please contact us.
Michael M. sent us the following note : This page has programs that animate many different value gear types allowing the user to adjust cutoff and well as many other things. Might go along with the QSU cutoff tip that had a link to an animation that did not show cutoff.

In stock and shipping!
Generic G/O Scale Sound Decoder, DC, DCC, (add optional GWire™).
Operates from either track or battery power.
U.S. Reissue Patent Number RE38,660.
Configuration Options
How to Hear and Play Sound Files (ext.)
G Scale Upgrade Software Item Numbers and Sound Files (ext.)
More Info | Installation | LGB Steam Installation | Speed Calibrating
Users Manual (ext.) | Specifications | Q2 Upgrade Manual (ext.)
Wiring Info for Installing a Quantum Magnum into an LGB Genesis (ext.)
What to enter?
Please enter the desired Type and Sound Numbers separated by a hyphen. The correct and up-to-date codes can be located here, individual pages for diesel, electric, and steam are available.
Example: The diesel chart here shows your loco with type number 1008 and sound number 201. You would then enter 1008-201 into the box above. Alternatively enter Any Sound File to the first box if you have no preference or wish to program the decoder yourself.
For Configuration Option please see this page and enter A, B, or C. For further assistance please contact us.
"I've been learning more and more about what the QSI card can actually do in G scale and I'm more and more impressed with it. I've got QSI in five locos now and I'll be adding more. I've been talking QSI up on the large scale forums--it's a really great product."
- Mike
I've installed the upgraded steam files in 4 different G-Scale locos. It's a great improvement--really well done. Thanks for continually improving the product!
-Mike O.
Michael M. sent us the following note : This page has programs that animate many different value gear types allowing the user to adjust cutoff and well as many other things. Might go along with the QSU cutoff tip that had a link to an animation that did not show cutoff.

This is the next generation wireless G Scale throttle loaded with many more features at a comparable cost compared to the current AirWire™ products!
Most User Friendly Format Available!
Runs 4 locomotives or consists at one time independently by using the 4 slot recall feature!
Operates 29 function controls!
Operates stationary decoders without any special accessories!
Instant Push Button Control of Locomotive Momentum!
Large 32 Character Easy to Read LCD Display gives you Address, Speed Direction, Active Functions and More!
Discreet Push Button Control of all the Popular Locomotive Sound and Control Functions!
Thumb Wheel or Push Button Control of Locomotive Speed and Direction!
Rugged Quality Ergonomic Design!
Compatible with all QSI, Quantum, DC/DCC Sound Power Decoders and all Air-Wire™ Receivers/Decoders!
Operates also as a DCC ProCab for all NCE DCC Systems.
More info
Manual (PDF, ext. site)
G Scale Systems Comparison: New Aristocraft TrainEngineer Vs. New NCE GWire Procab

Features Common to Analog and DCC

• Downloadable sounds and software enabled to allow future sounds and code
  improvements to be installed in locomotive without removing the memory chip. (Requires additional download module to be connected between your PC and program track; to be announced).
  
• Back EMF Load Compensated Speed Control. This feature had not been previously available in Analog or DCC.
  
• Improved sound profiling allows individual sounds to remain audible even at low system volume settings.
• Added Individual sound volume settings including 1) Horn, 2) Bell, 3) Motor, 4) Fan, 5) Turbo, 6) Air Brakes, 7)  Air Pumps, 8) Air Let-off, 9) Short Air Let-off, 10) Squealing Brake/Flange, 11) Dynamic Brakes, and 12) Coupler Sounds.
• Sound of Power™ added to simulate increased power demands under acceleration and decreased power under deceleration.
• Synchronized steam dynamo sound with headlight turn on operation.
• Progressive shutdown capability including states of Disconnect, Standby and Total Shut Down. Available for DCC and DC (with QARC Technology and Quantum Engineer)
• Extended Shut Down Scenario. Available in DC with QARC Technology and Quantum Engineer.
• Start Up
• Extended Start Up Scenario. Available in DC with QARC Technology and Quantum Engineer.
• Functional Air Brakes to slow train with added brake squeal and air-line let off sounds. Available in DCC and DC with QARC Technology.
• Verbal Status Report of locomotive state. Available in DCC and DC with QARC Technology.
• Play Horn or Whistle with alternate endings. Available only with sound sets that have sound records of different horn and whistle endings.

Features in Analog

• Regulated Throttle Control with real inertia effects. There have been many improvements in Regulated Throttle Control since its introduction.
  
• Separate sound records for Horn hoots and Whistle hoots.
  
• Load settings allowing up to 15 levels of inertial.
  
• Special Heavy Load option allows near constant momentum of trains up and down grades.
  In Heavy Load, the throttle will increase or decrease motor revs and Sound-of-Power™ without noticeably changing the locomotives momentum which allows operator to individually control locomotive motor RPM and sound settings during operation. QARC only.
  
• Selection of helper type locomotives including Normal, Lead, Mid, End and Pusher type helpers.
  
• Direction setting for improved lighting control of locomotives in consists.
  
• New accurate way to set V-Start.
  
• Improvement in changing direction in Neutral to provide three hoots when moving in reverse and two hoots when moving to forward.
  
• QARC™ Technology added. Quantum locomotives not equipped with new QSI QARC™ (Quantum Analog Remote Control) Technology can now be upgraded.

Release Information
Upgrade Chip Details
Item Numbers and Sound Files (external link)
Hints: Using the QSI Upgrade Chip
More QSI Upgrade Options
More information is available at QSI Solutions web site (external link).