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Question on Equalizers and Frequency Response

Ghoulardi

Ghoulardi

Well-Known Member
Let's say you have a system that by itself delivers a rated frequency response of 20 to 20k. If you hooked up an EQ with a rated frequency response of 32 to 16k, what would the overall effect on frequency response be? Would the EQ only effect the 32 to 16k part and let the rest (below 32 and above 16k) pass unchanged? Or would the EQ limit the systems frequency response to match that of the EQ at 32 to 16K?:scratch2:
 
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what makes you say that the eq has a frequency response of 32 to 16k? i suspect that the lowest control boosts or cuts hinged at 32 hz and the highest control boosts or cuts at 16k.
 
lguise said:
what makes you say that the eq has a frequency response of 32 to 16k? i suspect that the lowest control boosts or cuts hinged at 32 hz and the highest control boosts or cuts at 16k.
Click to expand...

I was looking at some different EQ's and specs last evening and saw one that stated that its frequency response was 32 to 16k. This got me wondering how that would play out on the entire system.
 
hhhmmm now you got me wondering if it will pass the full range and that simply means it will adjust those specific frequencies? I say dont even bother with an EQ but thats just me.
 
Those are merely the center points of the adjustment bands.

The actual FR capability of the EQ almost certainly extends above and below the highest/lowest adjustment bands.
 
One cannot be certain without doing actual tests of the system as connected with these components.

But the "32" and "16K" are operating frequencies for the boost and cut operation of the eek you have--and not necessarily reflective of its overall bandwidth as passed by the unit at reference level. Its bandwidth overall may extend flatly well above and below those frequencies-- even if the controls are set at midline--and perhaps in spite.

If the overall bandwidth is of a concern to you at times then you need to have provisions to exclude the eek from the signal path if you think it may be imposing limitations.

But certainly there is a local means where you are able to analyze the eek device, and find out for sure what its overall impact is on your system....
 
I haven't seen any real audio eq's that don't had a full frequency response (bandwidth). ADC's BSR's Audio Controls all have a 20-20000. Cheaper ones can add noise. They booost or cut certian frequency levels just like tone controls, but are merly more specific.
They can be useful in lower cost/ or unmatched systems, or unique setups. Moderation is usually best.
Personally I don't use them (I do have a Audio Control-sits in a box), but don't have a problem with them- if it worlks for you great!
Some 'audiophiles' object to them, mostly because of the added circuitry in the signal path.
 
IMO an EQ with FR less than 20-20K is not realistic and must have been incorrectly stated. The control freqs of 32Hz to 16KHz in octave or partial octave bands of the EQ is probably what was meant. IMO. In my 40 odd yrs in this 'hobby' Iv never seen an EQ specd like that.
 
Ghoulardi said:
Let's say you have a system that by itself delivers a rated frequency response of 20 to 20k. If you hooked up an EQ with a rated frequency response of 32 to 16k, what would the overall effect on frequency response be? Would the EQ only effect the 32 to 16k part and let the rest (below 32 and above 16k) pass unchanged? Or would the EQ limit the systems frequency response to match that of the EQ at 32 to 16K?:scratch2:
Click to expand...

No.

The graphs represent the frequency you choose to increase or decrease. The Frequency Bandwidth is far beyond 20-20 kHz.

Best Regards,
 
EQ's are wonderful. I thought my Kenwood sounded nice before, but when I hooked up an EQ to it (and not even a good EQ, It's a BSR. It's made out of cheap painted particle board, and the face is plastic painted silver, and the slider knobs keep falling off), and it just makes it sound a million times better.
 
I have been messing around with an equalizer I recently bought. I found a web site that I found to be useful and thought that I would pass it along. The chart is quite good and very useful if you don't own an equalizer. It might even get you playing with your knobs.
 
I'd think that 32hz and 16khz are the centers of adjustable bands. The EQ probably does have a resp. of 20-20khz (+/- 3 db). Anyway, your system will be limited by the "weakest link" in it.
 
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