Michael,
 
The new QSI titan provides stereo sound and you actually direct, by percentage, 
what sound come out what speaker. I assume you are using a Tsumani and even 
with 2 speakers all sounds are sent to both speakers.
 
Ed Sauers


________________________________
From: Michael Eldridge <[email protected]>
To: [email protected]
Sent: Saturday, October 29, 2011 3:54 PM
Subject: {S-Scale List} Testing two speakers in a steam locomotive and tender


  
The Theory: We all like the sound to come from the front of the engine, and we 
all like the most bass possible. I can put a much larger speaker in the tender 
(better bass). Bass sounds are less directional than high frequencies. I 
thought: What if I put a smaller speaker in the smoke box and a larger speaker 
in the tender? Will it seem like the sounds are coming from the engine?

The results: Nope. After I squished everything into the boiler and put it all 
together, I thought there was no sound at all coming from the locomotive - I 
assumed I had broken a wire or something catastrophic. Wrong. I took the boiler 
off the chassis, and if I put my ear right next to the speaker that normally 
lives in the boiler, I could hear it doing its thing. The larger speaker in the 
tender was so much more powerful that it sounds just as if there is only one 
speaker.

BTW - the speakers are the same impedance. I had them hooked up in parallel. 
Maybe (1) if in series they would be better matched (not likely), or (2) I 
could attenuate the tender speaker. Not this round, I need to get the 
locomotive back in service. 

The good news is now I can put a much larger stay-alive capacitor on the Zimo 
decoder in the locomotive, and I only need two wires between locomotive and 
tender.

-Michael Eldridge




[Non-text portions of this message have been removed]



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