Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

16 Ohm Mini speaker

440 views
4 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    February 2019
  • 143 posts
16 Ohm Mini speaker
Posted by Hawks Rule on Friday, March 26, 2021 2:38 PM

I have a Digitrax SF004 Soundbug Decoder, that comes with a 28mm 32 Ohm speaker.

I want to put it in a Proto 2000 GP20, but the speaker is too big!

I checked on line and cannot find a 32 Ohm speaker that is small enough to fit in the loco.

I know that there are 8 Ohm mini sugar cube speakers, but are there 16 Ohm speakers available, this way I can connect two in series and stay within the 32 Ohm guide that is recommended for the SF 004 Soundbug.

 

 

  • Member since
    October 2007
  • From: Fullerton, California
  • 1,156 posts
Posted by hornblower on Tuesday, March 30, 2021 4:19 PM

I don't know what is available regarding speakers but you have the right idea.  Two 16 ohm speakers in series will present a 32 ohm load to the amplifier.  Four 8 ohm speakers in series will also present a 32 ohm load.  

Check the specs on the Digitrax decoder as it might be able to handle a 16 or even 8 ohm load.  If so, it should be easy to come up with a speaker combination that will work.  Never connect a single 8 or 16 ohm speaker to an amplifier rated for a 32 ohm load as it can overheat and eventually destroy the amplifier.

Hornblower

  • Member since
    February 2019
  • 143 posts
Posted by Hawks Rule on Wednesday, March 31, 2021 11:28 AM

hornblower

I don't know what is available regarding speakers but you have the right idea.  Two 16 ohm speakers in series will present a 32 ohm load to the amplifier.  Four 8 ohm speakers in series will also present a 32 ohm load.  

Check the specs on the Digitrax decoder as it might be able to handle a 16 or even 8 ohm load.  If so, it should be easy to come up with a speaker combination that will work.  Never connect a single 8 or 16 ohm speaker to an amplifier rated for a 32 ohm load as it can overheat and eventually destroy the amplifier.

 

Thanks for the tip!

  • Member since
    February 2019
  • 94 posts
Posted by DRGWGJCO on Wednesday, March 31, 2021 11:42 AM

hornblower

I don't know what is available regarding speakers but you have the right idea.  Two 16 ohm speakers in series will present a 32 ohm load to the amplifier.  Four 8 ohm speakers in series will also present a 32 ohm load.  

Check the specs on the Digitrax decoder as it might be able to handle a 16 or even 8 ohm load.  If so, it should be easy to come up with a speaker combination that will work.  Never connect a single 8 or 16 ohm speaker to an amplifier rated for a 32 ohm load as it can overheat and eventually destroy the amplifier.

 

Here is a question derived by ignorance what would the effect be of wiring a 16 Ohm Speaker in line with a 16 ohm resistor to achieve the 32 Ohm of resistance in this situation?

  • Member since
    October 2007
  • From: Fullerton, California
  • 1,156 posts
Posted by hornblower on Wednesday, March 31, 2021 1:38 PM

DRGWGJCO
what would the effect be of wiring a 16 Ohm Speaker in line with a 16 ohm resistor to achieve the 32 Ohm of resistance

I guess in theory this would work but you'd better use a high wattage resistor as this is bound to create lots of heat.

Hornblower

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!