Question about vintage equpment I found.

[Trevytrev11]

I found a box full of these things and was hoping someone could help me figure out what they are.

Descrpition:

They are about 6 inches long and about 1-1.5 inches wide and deep. They are made of metal and weigh aboout a pound or two. There is a label on one of the sides that contains the following info from top to bottom:
Altec Acousta Voicing systems.
(There is a bunch of squiggly lines with an arrow through it).
600 Ohms
Frequency
400 HZ
Model Number
9013-9
Equalizer

The top of the piece has a peg thats about a 1/2 inch fall that sticks out from the middle. The bottom has 4 screws (one in each corner) and 4 little pieces with two prongs in the middle.

The device came in a green box that says:
Altec Lansing
Anaheim, California
9013 9
400hz

Made in USA

My grandfather used to work for Hollywood Studios (I think that is the correct name) in the 1960's and these parts were found in his garage after he passed away in the early 1990's.

I also have a similar device that is about an inch shorter and only weighs about an ounce or two. It is made of plastic It is made by TOA and is a "Tone Signal Unit STU-05" It can be seperated into two parts, that are connected by wire. The bottom of the pieces has a plastic knob that is surrounded by 8 metal stubs.

I am looking to sell these parts and would be interested to know what they are worth and where I could find a buyer.

[donaldpatten]

You have some equalizer modules used in large sound systems to minimize feedback and smooth the frequency response.These were connected between the Mixer/Preamp and the Power Amplifiers.
Try to sell them on eBay.

[Trevytrev11]

Thanks alot.

I put one up for sale today. Do you have any idea of what I should expect to get for these? Even if you could give me a ballpark figure, I would appreciate it.

I just want to know if it is even worth my time to put these up for acution.

Thanks again.