QSI 3-rail sound products produced between 1989-2000 STR Provides Sales, Installs, & Repairs for QSI Designed Train Control Sound Systems for: AC Powered O Gauge Toy TrainsSee one or more of the following links:
Your current QSI Sound System doesn't work properly? QSI Sound System Repairs
Battery giving you trouble? Battery Info.
Looking for an improvement, i.e. an upgrade to your QSI Sound System? Sound System Upgrades
1990-2000 Adding an After Market Sound system to an existing QSI ACRU or DCRU? Sound Syst & Opts PricesWhat sound set do you want?Sound Sets ACRU: 1984-2000, DCRU: 1996-2000 Need a reverse unit? All QSI and MTH After Market Train control Sound systems require a reverse unit.
Find the one that works best for your loco. AC & DC Motor Reverse Units1994-2000: All MTH locos that were shipped without ProtoSounds1 units were equipped with DCRUs, and a whistle or horn board.
All MTH locos shipped with ProtoSounds1 Train Control Sound Systems do not have a separate DCRU.
The PS1 bottom board includes the DCRU features of F & R, directional 1.5 Volt Lighting power, & Marker Light power.
Additional features in the PS1 bottom board include a Power Supply for the top (Sound) board, Auto-Battery-Off (after mid 1995), and a Coil Coupler Driver, with the places for installation of a second Coil Coupler driver circuit.
Places for installing the Auto-Battery-Off on the mid 1994-mid 1995 bottom boards were included.
The QSI versions that provide both AC Conventional Compatibly with the Lionel TMCC and the MTH DCS and Non-Linear Transformer Compatibility are: MTH ProtoSounds1 after 1997-8 & Proto Deluxe II QSI QSI After Market, QS2p, OEM, QS-3000.All earlier software versions require linear transformers for proper operation. See: Sound Sets: Sound Sets Family Features for a comprehensive list.Non-linear listings start at Paragraph 6 and continue at paragraph 9 thru 12.
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Brands that can be fitted with the QSI Conventional Train Control After Market Sound Systems
Lionel, MTH, Williams, K-Line, Weaver, 3rd Rail Sunset Models, Atlas, American Flyer, Pride Lines, Kusan, Ives, Bing, Bud, Marx, Dorfan and many more O Gauge & Standard Gauge locos, and some S Gauge. Works with any locos that operate on AC power, coverage includes the pre and post war eras, as well as all other years up to the present.
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Original Authentic Classic Lionel Whistle Sounds & More
Available in these Products: Hooter: Operator selectable choices include the Classic Diesel Horn and Bell Tooter: Operator selectable choices include the Classic Steamer Whistle and Bell See: Sound Sets: Hooters & Tooters
In QS2-314P: Uses the Classic Steamer Whistle, Bell, Chuff and an excellent period time piece PFA.
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Compatibility with Lionel and MTH Remote Control SystemsSee: Sound System Upgrades for what items require upgrading to become compatible with these remote control systems and other non-linear power supplies.
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Repairs available for your QSI/MTH After Market & ProtoSounds1 electronics
Go to: QSI Sound System Repairs and choose 1 of the 2 repair selections.
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Other QSI Products: Sidekick, Side Kick II, Power Programmer, Power Guard, all AC powered
Hooters & Tooters: An excellent choice for Prewar because they can be set to be louder than After Market Sound Systems.
MARS Light, AC or DC powered
SoundBloxx, ProtoLayout, AC or DC powered
Maxx Traxx, AC or DC powered
LASU (Live Action Sound Units), ProtoFreight, 9 Volt Battery powered
Many failed out of stock items are repairable by STR. See: QSI Sound System Repairs: QSI Obsolete Products Repairs
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