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-   -   Add a channel to parametric equalizer Rod Elliott Project 150 (https://www.diyaudio.com/forums/analog-line-level/351761-add-channel-parametric-equalizer-rod-elliott-project-150-a.html)

wonderfulaudio 27th March 2020 05:57 AM

Add a band to parametric equalizer Rod Elliott Project 150
 
Rod Elliott's project 150 shows schematic for a single band parametric equaliser.
Parametric EQ

https://sound-au.com/p150-f3.gif


How does one add another band to it?

Thanks,
WA

PRR 28th March 2020 02:15 AM

1 Attachment(s)
.

Mark Tillotson 28th March 2020 12:58 PM

And you'll need a 2-gang pot for the cut/boost VR2, and a 4-gang pot for the frequency VR1.


Alternatively you could replace the piggy-backed 10k linear pot for the frequency with
a single 10k log per channel, thus only needing a dual log 10k pot for frequency for two channels.

PRR 29th March 2020 04:39 AM

> a 4-gang pot for the frequency

I would call that a single channel with double-strong action.

I thought he wanted a bass +and+ a treble.

I agree the question can be read several ways.

wonderfulaudio 29th March 2020 04:53 AM

I replaced the 'channel' with 'band' in the original question.

Thank you all for your responses

dotneck335 5th April 2020 12:18 AM

You could use this:
Eight Band Sub-Woofer Equaliser
and just adapt it for wider-band use.


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