The SoundTraxx 885620 is a BLU-4408 Blunami digital sound decoder with the Baldwin & Other sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet.
Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is the big-scale Blunami: a 4-amp motor rating and screw terminals instead of solder joints, suited to S, O and Large Scale.
Features
12 Baldwin & Other prime movers: Baldwin VO, Baldwin 608NA, Baldwin 608A, Baldwin 606NA, Rio Grande Southern Galloping Goose, Dual Whitcomb, Fairbanks-Morse, GE GTEL UP “Slab Side”, GE GTEL UP “Veranda”, GE GTEL UP “Big Blow” A unit, GE GTEL UP “Big Blow” B unit, Cummins QSK19C x3 GenSet
Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos
Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand
Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you
Three braking types: independent, train and dynamic braking
Hyperdrive2 motor control for smooth, creep-speed switching
Over 20 Hyperlight lighting effects across 8 function outputs
16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb
CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper
More Information
Item Number:
SoundTraxx 885620
Model:
BLU-4408 Blunami
Sound Set:
Baldwin & Other Diesel
Scale:
S, O and Large Scale
Decoder Size:
69 x 30.5 x 14mm
Connection:
Screw terminal blocks (no soldering)
Max. Motor Stall Current:
4A
Function Outputs:
8
Audio Amplifier:
3 Watt, 8-Ohm Load
Sound Channels:
16 polyphonic
Processor:
32-bit, 28 functions
Control Modes:
DC, DCC and Bluetooth wireless
Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other Baldwin & Other sound profile decoders. A speaker is not included — browse DCC speakers rated 3 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts.
FAQ
Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC.
Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.)
Is a speaker included?No. Pair it with an 8-ohm speaker rated 3 watt or better that fits your shell.
Which prime movers do I get?All 12 listed above, selectable in the app or via CV 123. You are not locked to one engine sound — pick whichever matches your prototype.
Will it fit my locomotive?This one measures 69 x 30.5 x 14mm and connects by screw terminal blocks (no soldering). Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.
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