Electronics > Projects, Designs, and Technical Stuff
Can Someone Tell Me if This EQ Circuit Looks Okay?
Labrat101:
--- Quote from: hummusdude on July 08, 2020, 03:47:37 am ---wow... so much great info...thanks to all for your replies! I'm dropping this one no question.
Labrat101...might you have a schematic for a 5 or 6 band eq? I know ten bands are considered minimum for actually balancing the response of the room but it's a bit beyond what I had in mind for this stage.
--- End quote ---
just remove the unwanted bands from the schematic each slider has the frequency above it just take your pick . Seven is normally the bare
minimum . maybe remove the two higher frequency if your hearing is going . any less it would not be a good EQ ..
Also changing the scale on EQ the whole range shifts every frequency will have a reaction to the next .
If you want to go mad you could replace all the sliders with Digi pots and have it controlled via arduino and software :phew:
But that would spoil the idea of a EQ >:D
That is for you to do I am Hardware only Man .
Have fun its a really simple project with no rocket science involved . all the transistors are General purpose and any good Op amp as its Audio .
RNS
:popcorn:
hummusdude:
That makes sense. I was thinking about using a Dpot for a volume on a pre-amp but I probably won't do it on an eq since I tend to set it and leave it.
Thanks again for you advice!
Labrat101:
--- Quote from: hummusdude on July 10, 2020, 12:23:33 am ---That makes sense. I was thinking about using a Dpot for a volume on a pre-amp but I probably won't do it on an eq since I tend to set it and leave it.
Thanks again for you advice!
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I have loaded the parts list and the circuit diagram as pdf .. Box Not included ... :-+
Its from the original papers .. Page 3 has all the op amps and pinouts ..
will give you all you need .. Have Fun its a nice weekend project . and keep out of trouble in the lock-down
:popcorn:
RNS
Ps Digi Pots can be set and locked via the program pin so they return to that set point .. its on the manufactures Literature.
The LED display can be replaced with a VU meter .
The unwanted controls put pre sets set at 50% so they can be upgrade in the future .
hummusdude:
Thanks Labrat...this is most appreciated!
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