Digitrax SoundFX SFX0416 Podręcznik - Strona 4

Przeglądaj online lub pobierz pdf Podręcznik dla Konwerter mediów Digitrax SoundFX SFX0416. Digitrax SoundFX SFX0416 16 stron.

a Service Mode programming track, even if CV Read is inoperative.

If the connected function loads are insufficient for CV readback with a PR2 or

an incompatible DCC decoder is also connected, it is still possible to down-

load a complete sound project by using the large green "program project"

icon. in the SoundLoader program.

S S p p e e a a k k e e r r M M o o u u n n t t i i n n g g a a n n d d b b a a f f f f l l e e / / e e n n c c l l o o s s u u r r e e s s . .

The sound performance of any attached speaker(s) is greatly affected by the

mounting system and required baffle or rear enclosure.

The baffle is used to isolate to speaker diaphragm front sound waves from the

out of phase rear sound waves. This minimises sound cancellation, particularly

at lower frequencies. For most efficient sound generation, the volume of the

baffle should be as large as practically possible, and the baffle walls should be

acoustically rigid so not to allow acoustic interference.

Practical baffle materials are plastic, cardboard and even sheetmetal. Common

items such as cardboard tubes or 35mm film canisters may be modified and

trimmed to create reasonable baffles. Commercial baffles are also available in

many sizes to match many types of speakers, such as a "TDS Enclosure 1.10"

diameter" from Tony's Train Exchange [1-800-978-3472] unit that will match

the 28mm factory speaker of the SFX0416

Most HO or O scale or similar locomotives have limited internal volume within

the shell, so the choice of speaker mounting requires some ingenuity for good

sound performance and volume. An example of a commercial molded baffle in

a ready-to-run locomotive is the Kato HO F40-PH, where the 28mm speaker

clips into an enclosure at the upper rear of the locomotive shell.

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