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Author Topic: Does this trace tell you anything?  (Read 2202 times)

Riley Casey

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Re: Does this trace tell you anything?
« Reply #20 on: January 23, 2020, 04:13:25 pm »

Metal fatigue plus over excursion. Life's rough on poor little stage wedge diaphragms

Keith Broughton

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Re: Does this trace tell you anything?
« Reply #21 on: January 23, 2020, 04:13:36 pm »

Found this in one of the really bad ones:
Now we are getting somewhere!
It's all fine to try to figure out what the problem "might" be but opening up the drivers will tell the story.
So, now put a "good" driver on the horn in the "bad" cabinet and re-test.
Post results.
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I don't care enough to be apathetic

Miguel Dahl

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Re: Does this trace tell you anything?
« Reply #22 on: January 23, 2020, 04:43:06 pm »

Now we are getting somewhere!
It's all fine to try to figure out what the problem "might" be but opening up the drivers will tell the story.
So, now put a "good" driver on the horn in the "bad" cabinet and re-test.
Post results.

That's my next move tomorrow, if I have time.
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Miguel Dahl

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Re: Does this trace tell you anything?
« Reply #23 on: January 23, 2020, 05:11:26 pm »

Anyone know if just the diaphragm is available on the after-merket from Radian?

I've googlet but did not find the diaphragm.
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Art Welter

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Re: Does this trace tell you anything?
« Reply #24 on: January 26, 2020, 01:09:03 pm »

Anyone know if just the diaphragm is available on the after-merket from Radian?

I've googlet but did not find the diaphragm.
The diaphragm you posted before looks like the Radian 1750PB-8,  Parts Express shows two in stock today at $96.98. You did not mention the driver type, so just a guess as to if it that is the correct unit, the 1750PB-8 is used in these Radian drivers: 636PB, 651PB, 745PB, 760PB, 835PB & 850PB.

Radian also makes after-market diaphragms that fit many other manufacturer's drivers, so pretty good chance they will continue to make diaphragms to fit their own drivers.
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Miguel Dahl

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Re: Does this trace tell you anything?
« Reply #25 on: January 28, 2020, 02:20:04 pm »

The diaphragm you posted before looks like the Radian 1750PB-8,  Parts Express shows two in stock today at $96.98. You did not mention the driver type, so just a guess as to if it that is the correct unit, the 1750PB-8 is used in these Radian drivers: 636PB, 651PB, 745PB, 760PB, 835PB & 850PB.

Radian also makes after-market diaphragms that fit many other manufacturer's drivers, so pretty good chance they will continue to make diaphragms to fit their own drivers.

Thanks. We'll prolly go through our distributor, but I was curious if this part exists (anymore) as it's an old speaker.

It's the 5312 (-16) from Radian which sits in these.

This might be a retarded question. But terms in english is not my strongpoint.. What's the difference between a diaphragm and a driver? To me in English it's diaphragm, cone, or driver. Diaphragm and cone I understand, but the driver?
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Riley Casey

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Re: Does this trace tell you anything?
« Reply #26 on: January 28, 2020, 04:02:52 pm »

In common US English usage a driver is an entire speaker motor including the magnet, voice coil and diaphragm or cone.  Low frequency drivers refer to woofers, high frequency drivers most often refer to compression drivers operating above 500 hz.

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Re: Does this trace tell you anything?
« Reply #26 on: January 28, 2020, 04:02:52 pm »


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