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Old 10th June 2013, 11:01 AM   #21
Aniket is offline Aniket  India
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Hi csom,

Attached is the exact schematic which i am using, took some time to draw it. the image attached may not be clear but, i have attached the .xps file here in zip format, which is pretty readable. could you please convert it to pdf and post again. I made it on a general purpose PCB and the power supply on a separate PCB.

wish you very good luck for your build.

Regards,
Aniket
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File Type: jpg EQ 5 band.jpg (365.7 KB, 68 views)
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File Type: zip EQ.zip (131.7 KB, 15 views)
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Old 10th June 2013, 05:02 PM   #22
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Thank you really so much Aniket! This is truly a great help!
The Xps file is pretty prominent and I can understand how painstakingly you have drawn this. Great mod! .

I will make this very soon one after I finish my on going LM3886 project and report back to you. Also I have a plan to make a PCB for the 5 band equalizer. Now I guess I can expand it too with your this help. I will post that layout too.

Today I have started to build a dual regulated PSU-PCB with LM317 and LM337 with two power transistors for the preamp and EQ section and 3 way X over section all together. So it will be a little more powerful. Here is my current progress of work in the attachment.

Thank you once again
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File Type: jpg UC DIY PSU.jpg (362.0 KB, 57 views)
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Old 11th June 2013, 07:26 AM   #23
Aniket is offline Aniket  India
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Good work.
All the very best for your project.

Regards,
Aniket
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Old 25th July 2013, 07:53 PM   #24
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Dear Aniket,
I just finished a 5 band Eq some 1 hour ago. The source is from this site:
http://construyasuvideorockola.com/proyect_eq_5band.php

Fortunately I found the chip in a store. But it was very tricky to solder the chip on board.
I made the PCB following their given PCB layout.

It's working great even with passive X-over with my stereo LM3886 amp.
Here is a photo
I will attempt TLO74 next and will inform you comparing the performance.
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File Type: jpg 5-band-Eq-made.jpg (76.1 KB, 74 views)
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Old 3rd August 2013, 05:20 PM   #25
Aniket is offline Aniket  India
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Great!!!
Good work Som.
Just take care of the PSU for TL074 eq. the supply shown in the schematic is very quite and you could increase it's performance by using a regulated +/-15V supply with enough filtering and decoupling.

Regards,
Aniket
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