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Tutorials, Tips & Tricks -->>

Tutorials, Tips & Tricks -->>

 
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Email sales@sbs4dcc.com or call 317-201-4974 to discuss your project today!

 

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Streamlined Backshop Services is an authorized dealer for all major DCC manufacturers including:

 

CT Elektronik

DCC Specialties

Digitrax

ESU-Electronic Solutions

Lenz USA

MRC Corporation

NCE Corporation

QSI Solutions

Soundtraxx

SPROG USA

TCS-Train Control Systems

Zimo USA

 

Be sure to contact us if you don't find what you are looking for.  We can ship most items in 5-7 business days.

 

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Be sure to visit our store,Streamlined Backshop Services, where you can purchase many great items like DCC Decoders and Command Stations, DCC Installation Parts, Locomotives and Rolling Stock, Ready-To-Run Sound Cars, and our exclusive custom-engineered truck pick-ups.


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Be sure to visit our friends at www.hoseeker.netwhere you can find parts lists and diagrams of all your vintage and contemporary locomotives.

 

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SoundTraxx


Tsunami2 Speaker Selection



The new line of SoundTraxx Tsunami 2 and Econami sound decoders come with some impressive specifications to improve volume and sound quality.

Shame on me, I did not give much critical thought to the new specs until I saw a note on the SoundTraxx web site and received a couple phone calls from customers who stated they were having some issues using my SBS4DCC Sugar Cube Speakers with the new decoders.

The bottom line and the crux of the matter is that the new SoundTraxx Digital Sound Decoders feature 2 watt and larger amplifiers.  This is not uncommon in larger scales, but a relatively new concept for traditional quote-unquote HO model decoders.

I would refer you to my web page titled Wiring Multiple Speaker To A Decoder for more information on the subject.  

I have repeated some of the critical content on Speaker Selection here as it is the point that needs conveyed.  

Please visit the Wiring Multiple Speaker To A Decoder page for my complete discussion of the subject. 

The SoundTraxx Digital Sound Decoder models that feature the new high-output amplifiers include:

ECO-2200
ECO-4400

It is important to note that is topic requires consideration no matter what brand of decoder and speaker are being used.  

While the relevance of this subject has increased with the new SoundTraxx Econami and Tsunami 2 Digital Sound Decoders, I originally discussed this topic in 2011 when we were trying to push the envelope of miniature speakers for N scale.  

My point is... this is not a new problem just an opportunity to re-educate ourselves.



It is important to note that this topic requires consideration no matter what brand of speaker or decoder are being used.

Speaker Selection


 

Speakers and the amplifier on a decoder are rated by Watts of Power and Ohms of Impedance.  It is very important to try to match this.  A mis-matched configuration will definitely affect the volume and could fatally damage the decoders amplifier.

 

Watts of Power

 

The Watts of Power rating for current production decoders varies by manufacturer and model.  It is best to review the specs for your appliction to be sure what your decoder is rated at.  Most are rated at 1 Watt.  This will be the basis for our discussion.

 

Matching the wattage of the speaker to amp is important because a mismatch can cause poor sound quality and premature failure of the speaker.

 

In general, a higher the wattage will produce a louder the installation.  That's why the rock stars want more power.  What was it Terrible Ted said... "If it's too loud, you're too old"...

 

The actual value of wattage delivered to the speaker is determined by the rating of the amp, the wiring circuit, and the volume setting for playback. 

 

A 1.0 watt amp will deliver 1.0 watts to a single speaker when the volume is set to 100%.

 

A 1.0 watt amp will deliver 0.5 watts to a single speaker when the volume is set to 50%.

 

Multiple speakers affect this calculation even further.  There are a number of sites on the web that discuss the formula for calculating this.  I like to leverage the knowledge of the web and have found an easy way to do the math.  Read on...

 

Ohms of Impedance

 

The Ohms of Impedance rating for current production decoders varies by manufacturer and model.  Again, it is best to review the specs for your appliction to be sure what your decoder is rated at.  Most are rated at 8 Ohms.  This will be the basis for our discussion.

 

Matching the impedance of the speaker to the amp is important because a mismatch can cause poor volume and premature failure of the amplifier.

 

In general, a lower impedance will produce a louder installation.  But be careful!  This is also the quickest way to smoke the amp.  If the impedance is too low, it will over-drive the amp and cause rapid failure.  The high road here is to be equal to or higher than the actual rating of the amp.

 

The actual value of impedance of the installation is determined by the rating of the speaker and the wiring circuit.

 

A single 8-ohm speaker will create 8-ohms of impedance.

 

Two 8-ohm speakers wired in parallel will create 4-ohms of impedance.

 

Two 8-ohm speakers wired in series will create 16-ohms of impedance.

 

Multiple speakers affect this calculation even further.  There are a number of sites on the web that discuss the formula for calculating this.  As stated previously, I like to leverage the knowledge of the web and have found an easy way to do the math.

 

There is a free excel spreadsheet download available from Duncan Amps that will do the math for you and allow you to experiment with speaker ratings to determine how they will affect the final configuration.

 

 

You can purchase wide variety of SPEAKERS today from my online store

 

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