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Subwoofers
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 Posted: Mon Apr 29th, 2019 04:42 am
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Toeffelholm
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I could improve now the under layout low-frequency response with a modified arrangement. 

Sounds fine now. The  low-pass filter now works down to its lowest frequency of 22Hz. 

See my last post in the “The Replicant” thread.


I also tried an active subwoofer instead of the low-pass filter.
For my ears I can achieve a better result for the loco sound when I’m able to regulate the frequency,
down to a lower bandwidth than the subwoofer electronic is able to.


But the active subwoofer / satellites combination is great for an ambience Harbour sound,
I recently got from Fantasonics.


Juergen




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 Posted: Sun May 5th, 2019 03:12 pm
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Si.
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" For my ears I can achieve a better result for the loco sound when I’m able to regulate the frequency "


Hi Juergen  :wave:



Yes, this was exactly the idea, when recommending the low-pass-filter board.  L:

I'm pleased to hear it is all moving in the right direction Juergen.  :thumb:





WAY CHEAPER than trying to make or buy 'super low frequency' passive crossovers as well.


I speced out a passive crossover with a center-frequency of 125 Hz a while back.  :brill:

The cost of a decent quality 'hi-fi' inductor, for the otherwise simple circuit ...

... was enormous !  $$$ 

(as was the iron-cored heavy-gauge copper-wire inductor !)  :shocked:

It was in this case though, the only 'rea'l way to go, rather than 'active' electronics.



At only a couple of Bucks, the low-pass-filter board is worth getting to experiment with.

I got one here, which I briefly tinkered with, currently residing in my  C :cool: :cool: L  boards box !  ;)



Had any ideas Stan ?  ???

Maybe you got an old BOSS-pedal kicking around that might work for something.  ;) ;) ;)

Perhaps some chorus & overdrive could sound good from a Porter !!  :Crazy:



:moose:



Si.




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