Hi Ed; No reason to speculate. If you have a unit with the speaker facing up, hold your hand over it and see if it sounds any better to you. If not, no need to change. I have to say I have not experimented, the consensus on the DCC sound lists favored down, so that's how I installed mine. At least one modeler I know of started strongly in favor of "up" until he tried the hand test. After the test, he started switching to "down".
I suspect (and I'm not a sound specialist or physicist) that when aimed up, most of the sound heads off to the the ceiling, with only the fringes of the sound wave reaching a listener alongside the unit. When aimed down, the sound bounces off the (usually hard) track and roadbed and a larger percentage reaches the listener. That, and as Peter notes, the layout itself may act as a sounding board to accentuate the base. These are definitely SWAGs (Scientific, Wild A...d Guesses). Pieter E. Roos --- On Tue, 7/5/11, Edward Sauers <[email protected]> wrote: > From: Edward Sauers <[email protected]> > Subject: Re: {S-Scale List} Tsunami Sound > To: [email protected] > Date: Tuesday, July 5, 2011, 6:21 PM > Pieter, > > I hear this argument all the time but I am not sure about > it's validity, the purpose of an enclosure is to push all > the sounds out the front of the soeaker because without the > enclosure the sounds can wrap around the speaker and bounce > back into the cone thus causing distortsion. Would this be > the same results if the speaker is pointed downward? > wouldn't the sound waves bounce back into the cone and cause > reduced bass? I have all my speakers pointed upward and they > all sound good to me. > > Ed Sauers > > --- On Tue, 7/5/11, Pieter Roos <[email protected]> > wrote: > > > From: Pieter Roos <[email protected]> > Subject: Re: {S-Scale List} Tsunami Sound > To: [email protected] > Date: Tuesday, July 5, 2011, 5:39 PM > > > > > > > Hi Donald; > > While I haven't used them yet, I've heard good things about > the high bass speakers. > > OTOH, a lot of people have noted that they get better > results pointing the speakers of whatever type DOWN toward > the tracks, firing through the truck mounting holes or > openings in fuel tank bottom or tender/ash pan bottom. It > seems that the sound waves bouncing off a block enhances the > base values. > > Those in doubt can test by holding a hand close above the > upward pointing speaker output. If the result doesn't sound > better to you, then don't bother to change the mounting to > point down. > > Most AM diesels don't provide a plug for the decoder. While > I hard-wired mine, adding an after-market plug will be > easier if you need to change out the decoder for any reason > later. Finally, get some warm-white LEDs and resistors to > replace the single AM bulb (or blueish "white" LED). The > longer life span and improved color are both worth the > effort. > > Pieter E. Roos > > --- On Tue, 7/5/11, Bill Lane <[email protected]> > wrote: > > > Donald, > > > > > > > > I am a fan up speakers pointing straight up through > fan > > grills or the stack. > > Others opinions will vary. I am using the deep bas > speakers > > exclusively. > > http://railmasterhobbies.com/Speakers.htm > > > > > > > > > > > > > > > > > > Thank You, > > Bill Lane > > > > > > > > [Non-text portions of this message have been removed] > > > > ------------------------------------ > > Yahoo! Groups Links > > > [email protected] > > > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
