trick behind the boom box - Page 2

cbdb · 4th January 2009, 07:08 AM

they usualy mix on a number of speakers and check it at different levels, and the good mixers can make it sound good on any speaker at any level, the problem is producers that want it to jump out of your radio.. sorry way of topic and time to stop.

ravslanka · 7th January 2009, 01:53 PM

Quote:

Originally posted by breez
Punchy and heavy bass is around 100 Hz. No trickery needed other than an equalizer circuit to boost 80-160 Hz band or perhaps a high Q reflex tuning around 100 Hz.

hi breeze,

i have googled for boostng a particular frequency band but i didnt found anything any circuit would be appreciated

thanks in advance

MisterTwister · 7th January 2009, 05:26 PM

just use "winisd pro" to tune speaker box with bump in 100hz.
those plastic boomboxes have very fatiguing sound.
they may impress with their sound at first, but you can't listen to them for prolonged time.

brig001 · 17th January 2009, 10:46 PM

A circuit was published in Everyday Electronics circa 25 years ago, IIRC (which is doubtful at my age...).

They used a trick to fool the brain into thinking the bass note was there when it wasn't. They added second and third harmonic distortion, then removed the fundamental. The brain heard the second and third and filled the fundamental back in for you.

So: 50Hz becomes 100Hz and 150Hz, the only time you would hear those frequencies together would be when the original 50Hz was present.

Now I have no idea whether they use this technique these days or not...

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4th January 2009, 07:08 AM	#11
cbdb diyAudio Member Join Date: Oct 2008 Location: Vancouver	they usualy mix on a number of speakers and check it at different levels, and the good mixers can make it sound good on any speaker at any level, the problem is producers that want it to jump out of your radio.. sorry way of topic and time to stop.

7th January 2009, 05:26 PM	#13
MisterTwister diyAudio Member Join Date: Feb 2006 Location: usa Blog Entries: 1	just use "winisd pro" to tune speaker box with bump in 100hz. those plastic boomboxes have very fatiguing sound. they may impress with their sound at first, but you can't listen to them for prolonged time.

17th January 2009, 10:46 PM	#14
brig001 diyAudio Member Join Date: Jan 2009	A circuit was published in Everyday Electronics circa 25 years ago, IIRC (which is doubtful at my age...). They used a trick to fool the brain into thinking the bass note was there when it wasn't. They added second and third harmonic distortion, then removed the fundamental. The brain heard the second and third and filled the fundamental back in for you. So: 50Hz becomes 100Hz and 150Hz, the only time you would hear those frequencies together would be when the original 50Hz was present. Now I have no idea whether they use this technique these days or not...