I need to know how to alter the volume on pyramid T-10 talking clock for the blind

Do your own homework.? How will you learn anything if you ask other people to do it for you.? How will you know if people are lying about the answers, because they know, that you DON'T know.?

You might try starting at this page from Seiko
(I could not further because you do not give exact model number)
Instruction booklets

10.June.2015

Try contacting Pyramid directly here:
http://www.pyramidcaraudio.com/ContactUs.aspx

Look at the problem set up on the screen capture below.
If the pyramid is made of homogenous material you need not worry about the mass (what you call weight) since the ratio of the masses is equal to the ratio of the volumes.
Setting the ratio of volume to be 1/2, and using the ratio of the base areas of the pyramids to be (x/h)^2, you end up with
(1/2)=(x/h)^3
Solving for x, you get x=h/(cubic root of 2)

hhhhhhh

Yeah, "wireing" can be hard to understand. Recommend contacting a local car audio professional or Pyramid customer support directly here:

http://www.pyramidcaraudio.com/ContactUs.aspx

Those would be the ones marked "input". Recommend contacting a local car audio professional or Pyramid customer support directly here:

http://www.pyramidcaraudio.com/ContactUs.aspx

Click on MANUAL DOWNLOAD

LOOK PAGE 4 INTO THE PDF FILE!!!!

http://www.pyramidcaraudio.com/sku/903G/10-Band-Half-Din-Power-Booster-Graphic-Equalizer-Amplifier-200-Watts#

I just found mine, could email to you
has several languages
What rules are there?