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Bass sound in DCC





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#1 oldknotty

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Posted 18 February 2012 - 17:40

For bit of DCC luddite like me , what is the difference between a bass reflex speaker and a bass enhanced speaker , I am looking to fit some in my DDC sound locos to improve the sound but I am getting more confused the deeper i dig :-)
Thanks martin

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#2 kevpeo

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Posted 18 February 2012 - 17:56

From my experience Martin, a good 'big un' is better than a good 'little un'! Or to put it another way, a speaker with the back box fitted is better than one without. A well-sealed back box is better than an unsealed one. A bass-enhanced is better than a 'std' speaker. A bass-reflex is better than a bass-enhanced, if, and it's a big 'if', you have the room to fit one in. And the bigger (deeper) the bass-reflex is, the better. Not all will agree with this of course, and a well-sealed 'std' speaker can often be louder in exhibition conditions, if not as 'bassy'.


HTH, kev.

Edited by kevpeo, 10 July 2014 - 07:03 .

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#3 oldknotty

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Posted 18 February 2012 - 19:38

Thanks Kev it helps I am looking at my alternatives here before I buy !!
Martin

#4 gridwatcher

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Posted 20 February 2012 - 09:22

Agree with KEv. The only proviso I would add is that some locos, that are naturally bassy, improve no end. Think class 60 class 37 etc. If the loco is naturally higher frequency sounds then experiment first. Things like class 58s 56s HSTs that have a high end scream etc etc may need care. The Bass Reflex speakers sometimes muffle the higher end too much. The large conventional speaker like this might be best compromise if you can fit it in?
http://www.abcompone...o.uk/ABS-230-RC
Think this if Legomanbiffos favourite!!??

Si
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#5 legomanbiffo

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Posted 21 February 2012 - 00:33

For bit of DCC luddite like me , what is the difference between a bass reflex speaker and a bass enhanced speaker , I am looking to fit some in my DDC sound locos to improve the sound but I am getting more confused the deeper i dig :-)
Thanks martin


First off, bass enhanced is simply a marketing term. It's a speaker who's bass performance is better than the standard ESU speaker, hence the term 'enhanced'. Bass reflex on the other hand is a technical term for a design of loudspeaker enclosure which uses a tuned port to reinforce the sound at bass frequencies. It's bass performance is better again than the bass enhanced but it is physically bigger and won't fit in all locos. DCC Supplies and Digitrains both sell bass reflex speakers of slightly different sizes. I would say that the Digitrains one is slightly better but is physically bigger so this is to be expected (and again this will limit what you can fit it in). It's well worth buying a selection of speakers and trying them with your target loco to see which will fit and which sounds best. Blu-tac them to the side of the loco to have a quick listen before you commit yourself.

The speaker Simon has linked to above doesn't come with an enclosure, you have to build it yourself. If you're happy doing that, and if it will fit (it's 28x40mm), it sounds fantastic.

Hope this helps,

Bif
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#6 oldknotty

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Posted 21 February 2012 - 19:09

Building a custom speaker enclosure is not a problem as long as the thing will sound good once all the work is done .Thanks for the info Bif

#7 Essex2Visuvesi

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Posted 22 February 2012 - 10:12

Also for best sound the enclosure needs to match the specs of the speaker. Enclosing a speaker will Improve things but for best sound quality then the enclosure needs to have the correct air volume for the speaker used. This is quite a complex subject in itself enclosures can be ported, sealed, bandpass or a multitude of others.
Here is a website with some of the basics
http://www.bcae1.com/spboxnew2.htm
its aimed at car audio but the theory transfers readily to DCC sound
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#8 oldknotty

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Posted 22 February 2012 - 14:57

My life and hobby just got more complicated :-(

#9 Essex2Visuvesi

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Posted 22 February 2012 - 16:07

I suggest going for ready made enclosures where possible....
take a look at caboose hobbies for speakers and enclosures
http://www.cabooseho...index_brief.php
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#10 Poe

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Posted 23 March 2012 - 03:18

As with hifi, the bigger the speaker the better the sound, bass ports help loads. If youve got a loco with a tender i highly recommend laptop speaker enclosures that have bass ports like these:

http://www.ebay.co.u...=item3f03b8eb99

Bass Enclosure.jpg

#11 Poe

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Posted 23 March 2012 - 03:21

As with hifi, the bigger the speaker the better the sound, bass ports help loads. If youve got a loco with a tender i highly recommend laptop speaker enclosures that have bass ports like these:

http://www.ebay.co.u...=item3f03b8eb99

Bass Enclosure.jpg


1, 1.5 & 2 Inch.jpg

#12 Lady_Ava_Hay

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Posted 23 March 2012 - 09:41

What ohm rating are these speakers? Are all these laptop speakers the same ohm rating? It doesn't specify on the E bay listing.

#13 Poe

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Posted 23 March 2012 - 10:07

The ones ive got are 4Ohms

Mine gives out a 170Hz bass response which is deep for a speaker this small

Search for some harman kardon speakers, they are normally in toshiba laptops they sound very good indeed, and rival pc desktop speakers.

http://www.ebay.com/...laptop speakers

Edited by Poe, 23 March 2012 - 10:14 .


#14 boxbrownie

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Posted 12 April 2012 - 19:42

Just ordered a few of these, various designs but all look small......should be interesting playing around with them at the very least, thanks for the heads-up Poe.
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#15 Poe

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Posted 13 April 2012 - 10:08

No probs have fun

#16 Mike Sheardown

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Posted 13 April 2012 - 22:48

Hi Poe,

Do you know if the 4 ohm speakers you recommend will work ok with both the v3.5 and v4 Loksound chips?? The recommended (by Loksound) speakers are 100 ohm and 8 ohm respectively.

Thanks for your help

Best Wishes

Mike

#17 cassey jones

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Posted 14 April 2012 - 06:27

Mike,

For loksound V3.5 - use only 100 ohm speakers
For V4 use either 8ohm or 4 ohm speakers :no:

#18 Poe

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Posted 15 April 2012 - 10:55

most pc laptop speakers are 8Ohms 2watt which give a rich bassy sound, 4ohm tend to sound tinny but a good enclosure should sort it, i only use 8ohm and 4 ohms in shunters

Edited by Poe, 15 April 2012 - 10:57 .


#19 oldknotty

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Posted 15 April 2012 - 13:26

most pc laptop speakers are 8Ohms 2watt which give a rich bassy sound, 4ohm tend to sound tinny but a good enclosure should sort it, i only use 8ohm and 4 ohms in shunters

Can you find a few pics that show your installation process please ??
Thamks martin

#20 Mike Sheardown

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Posted 15 April 2012 - 21:18

Cassey Jones and Poe,

Thanks for your advice, I'll give these speakers a go with a V4 Loksound chip.

Best wishes

Mike

#21 ThaneofFife

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Posted 17 April 2012 - 05:40

Its a conundrum I have been mulling over for sometime whether to fit enhanced or reflex. This thread will certainly prove helpful in future sound installations.
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