...from an emailed question I wrote recently
I was just listening to your 'sound samples', and had a question about the EMD 567 Sound of the F7 locos. (
BTW, great presentation )
http://www.ulrichmodels.com/Sound_Samples/SoundSamples.htm
I assume the speaker is installed similar to the factory MRC installation on the rear of the metal chassis. But I believe I have been exposed to two different speaker orientations:
1) the front wave of the speaker faces downward and the rear face of the speaker is cover by a round plastic back-wave cavity enclosure.
2) the front wave of the speaker faces into the round plastic back-wave cavity enclosure while its rear face faces downward in the loco.
I would think the second orientation would be less effective than the first ?? Doesn't the already small front face of these small speakers produce a much more positive sound than the back face that is greatly cover by the metal frame of the speaker itself ?? Why would one install these small speakers 'backwards' ??
....And in both cases I would question the size of the 'back-wave' cavity enclosure box. It seems so shallow as to not really allow for full speaker excursions. Shouldn't these back-wave cavities be 'allowably large' so as to not impend full speaker excursions??