The Digitrax SP53188B is the big one - a 53 x 18 x 14mm 8 ohm speaker in a sealed enclosure, with roughly four times the cone area of a compact box speaker. Where there is room for it, in an HO long hood, a large tender, or anything O and G scale, it is the difference between a locomotive you can hear and one you can feel.
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Features
53 x 18 x 14mm enclosure - the largest of the Digitrax box speakers, with the cone area and internal volume to produce genuine low end.
Sealed enclosure included. No scratch-building a baffle from styrene; the acoustic work is already done.
8 ohm, 1/2 watt - matches the speaker output on most DCC sound decoders.
Interface wires pre-attached for soldering straight to the decoder speaker pads.
Measure first: at just over 2 in. long and more than half an inch deep, this needs a long hood, a tender, or an O scale frame. For tighter installs use the 26.5 x 15.5 x 9mm SP26158B.
More Information
Brand
Digitrax
Item Number
SP53188B
Product Type
DCC Sound Decoder Speaker with Enclosure
Speaker Shape
Rectangular box
Dimensions
53 mm x 18 mm x 14 mm
Impedance
8 Ohm
Power
1/2 Watt
Enclosure
Included, sealed
Connection
Bare interface wires (no plug)
Recommended Scale
HO, O, G
Condition
New
FAQ
Will this fit in an HO locomotive?In a diesel long hood or a decent-sized steam tender, usually yes - it needs about 2-1/8 in. of length, 3/4 in. of width and 9/16 in. of depth. In a short switcher or a boiler, it will not. Measure before ordering, or step down to the SP26158B.
Is it really that much louder than a compact speaker?Yes. Cone area and enclosure volume are what produce bass and output, and this has far more of both. It is the single biggest upgrade you can make to a sound install that has room for it.
Do I need 8 ohm or 32 ohm?Check your decoder manual. Most DCC sound decoders drive 8 ohms, which is this speaker. If yours specifies 32 ohms, order the Digitrax SP531832B - the same speaker and box in a 32 ohm version.
Does it come with a plug?No, it has bare interface wires for soldering to the decoder. If you need a plug-in speaker, the Digitrax SP26158BC has a 2-pin plug, though it is the smaller box.
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