1971 Vintage JBL Custom Speakers

[msm3645]

here are all the pictures of the speakers, they are each about 500W and I have two of them, its crazy

[John Y.]

From the looks of the cabinet, I would guess that it is a custom make with a D130, 175DLH and an 075. It is too tall to be the C35 reflex cabinet. It was not a common thing in those days to use an 075 along with a 175DLH, but someone wanted to extend the high end. Your second crossover should be an N1200, indicated by a label on the front of the crossover. The first was discussed in your other post and is probably an N7000.

John Y.

[msm3645]

Thanks a lot for you input, its been really helpful. Yeah the cabinet was custom made by my dad and a friend of his, they were planning on startinga speaker company, so these were some of the prototypes. They sounds great, but the cross-overs need replaced and they will sound just like new.

[Zilch]

Originally posted by msm3645
They sounds great, but the cross-overs need replaced and they will sound just like new.

It's unlikely the crossovers need replacement. Typically, the L-pad controls may need cleaning, is all, unless they are burnt by overdriving.

What are the symptoms?

[msm3645]

most likely you are right, mainly I think the knobs are not making a good connection, so I am getting some static and crackling

[scott fitlin]

Caig De-Oxit cleans scratchy pots!

[Ken Pachkowsky]

The 030 2 way was a popular system in my neck of the woods (Winnipeg). Several guys I knew had them. They were the stepping stone to the larger 3 way systems. Not many people talk about them.

They used a D130 combined with a 075 and crossed over around 2500 as I recall?

Sold mine to a guy back home in 75 and he still uses them.

Ken