Then, maybe, bring up the bass by 1db at the bottom...
That's all.
Actually, I'd bypass the equaliser full stop, and whack in a
second-hand
power amp, but that's what I always do :-)
-----Original Message-----
From: Nikola Kasic
[mailto:nikola@xxxxxxx]
Sent: Wed 29/05/2002 13:00
To:
Home automation (E-mail)
Cc:
Subject: [ukha_d] OT
Adjusting Home cinema - equalizer
I played
yesterday
with Sound Pressure Level meter and Test DVD (Ultimate DVD Platinum) and it
just confirmed what I knew that my system is not reproducing signal in mid
ranges so I need to increase it with built in equalizer. Amp is Sony
STR-DB1070
However, my
equalizer works in a way that I have to choose frequency and gain (in dB).
I
can choose 1 frequency in each range. Ranges are:
BASS: 99Hz -
1kHz
MID: 190Hz -
10kHz
TREBLE: 1kHz -
10kHz
Gain is
distributed in bell shape (I think it's called Gauss shape, my university
days
are far behind me) around chosen frequency.
I took a
measurments on 3 frequencies:
1 kHz
-7dB
4 kHz
-2dB
8
kHz +1.5dB
Now I need to
flatten frequency response curve with these "bells", but I forgot how to
calculate the gain (formula). How far from central frequency it falls on
75%,
50%, 25% of the value.
E.g. if I have
two
2 "bells" and in the middle of them each of them falls to 50% of the value,
resulting curve between them will be 100%. value because they
add.
I hope this all
makes sense.
Probably Mark
can
help me with this.
I tried with
hit
and miss method, but went nowhere, because those settings affect each
other. I
need to put on paper what I expect and then I can fine tune by
measuring.
Nik
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