GSX Graphic Shaper (Split Freq)

[Mmj85]

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Hi everyone. Just wondering if someone can enlighten me with the Freq bands for each configuration on the GSX?
So far in the shop it says:

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One Band= 50Hz - 250Hz
Two Band= ?
Three Band= ?
Four Band= ?
Five Band= ?

I love this device! I been doing MultiBand Comp with it
I would appreciate the info. Thank you

[kloeckno]

Since it says it's a logarithmic scale, if you leave it at 50 hz, the next band is 100, then 200, 400, and 800.

250 would make the other bands 500, 1000, 2000, 4000.

You simply double the previous band to figure out the next one.

[mcatalao]

I just did a little test with Thor and the white noise generator trhough GSX.

It seems that they implemented cross fades a bit more sloped than SSL's, i''d say they are 12 db slopes. The first is selectable.
Then you have 3 band pass:
Lo Mid = variable to +-640
Mid = +-640 to +- 2,4KHz
MidHigh = +-2,4 Khz to +-8 Khz
High = +-8 Khz HPF

This values are not ballpark, cause i only used the internal analyzer to see where the cuts started.

[selig]

I just did a little test with Thor and the white noise generator trhough GSX.

It seems that they implemented cross fades a bit more sloped than SSL's, i''d say they are 12 db slopes. The first is selectable.
Then you have 3 band pass:
Lo Mid = variable to +-640
Mid = +-640 to +- 2,4KHz
MidHigh = +-2,4 Khz to +-8 Khz
High = +-8 Khz HPF

This values are not ballpark, cause i only used the internal analyzer to see where the cuts started.

Do you mean to say "cross over slopes" (not cross fades)? 12 dB is very gentle, even the HP SSL is 18 dB. If these are only 12 dB they are certainly not more sloped than the SSL, fwiw.

[Mmj85]

Since it says it's a logarithmic scale, if you leave it at 50 hz, the next band is 100, then 200, 400, and 800.

250 would make the other bands 500, 1000, 2000, 4000.

You simply double the previous band to figure out the next one.

I See. Thanks for the response, i guess i am still confused on the Split Freq when configuring them to:

(B1)
One -Band=20Hz-20kHz odviously
(B2)
Two Bands only ---> I know this one you control with the (Bass/Over) Knob witch means at 150Hz
Band 1= 20Hz -150Hz
Band 2= 150Hz-20kHz
(B3)
Three Bands only
Band 1=?
Band 2=?
Band 3=?
(B4)
Four Bands only
Band 1=?
Band 2=?
Band 3=?
Band 4=?
(B5)
Five Bands only
Band 1=?
Band 2=?
Band 3=?
Band 4=?
Band 5=?

I Know its a bit much to ask but just wondering if anyone knew the exact Freq numbers? Would be nice if the GSX displayed the Freq under the knobs as you configure the amount of Bands that you want

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[mcatalao]

Do you mean to say "cross over slopes" (not cross fades)? 12 dB is very gentle, even the HP SSL is 18 dB. If these are only 12 dB they are certainly not more sloped than the SSL, fwiw.

I guess i do (cross over slopes). But i thought the SSL was only 6 db? I'm trying to find where i got that from. They are definitely more sloped than the SSL's, but less than 4dyne's 24 db setting.

[mcatalao]

Selig, you're almost right... According to the manual:

"LPF Frequency
The Low Pass filter (LPF) removes high frequencies from the signal, making the sound less bright. The LP filter has 12dB/Octave roll-off curve. Range is 100 Hz - 20 kHz.

HPF Frequency

The High Pass filter (HPF) removes low frequencies from the signal, causing a thinner sound. The HP filter slope has a 18 dB/Octave roll-off. Range is 20 kHz - 4 kHz."

Oh just found a typo there!!!!

BTW, do you see any explanation to why the LPF has a 12 db/octave curve and the the HPF a 18 db/octave curve? Thanks.

[bpmorton]

Selig, you're almost right... According to the manual:

"LPF Frequency
The Low Pass filter (LPF) removes high frequencies from the signal, making the sound less bright. The LP filter has 12dB/Octave roll-off curve. Range is 100 Hz - 20 kHz.

HPF Frequency

The High Pass filter (HPF) removes low frequencies from the signal, causing a thinner sound. The HP filter slope has a 18 dB/Octave roll-off. Range is 20 kHz - 4 kHz."

Oh just found a typo there!!!!

BTW, do you see any explanation to why the LPF has a 12 db/octave curve and the the HPF a 18 db/octave curve? Thanks.

probably because that is how a real SSL is set up.

[mcatalao]

probably because that is how a real SSL is set up.

Probably but my question is more about a physical reason than only the emulation part of it.

[bgold]

With speakers it's usually a lot more important to prevent loud bass from going to tweeters than it is to prevent loud treble from going to woofers. So you put a sharper rolloff on the HPF to midrange/tweeter speakers.

[selig]

Selig, you're almost right... According to the manual:

"LPF Frequency
The Low Pass filter (LPF) removes high frequencies from the signal, making the sound less bright. The LP filter has 12dB/Octave roll-off curve. Range is 100 Hz - 20 kHz.

HPF Frequency

The High Pass filter (HPF) removes low frequencies from the signal, causing a thinner sound. The HP filter slope has a 18 dB/Octave roll-off. Range is 20 kHz - 4 kHz."

Oh just found a typo there!!!!

BTW, do you see any explanation to why the LPF has a 12 db/octave curve and the the HPF a 18 db/octave curve? Thanks.

Sorry to be pedantic, but how am I "almost right"? Everything I said you've repeated here! Just saying…

As for the other question, Bob already answered IMO.

[mcatalao]

My bad man I thought you were refearring to both filters in your last post. I now see you see i only said HP...