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Good, it's not a Pascalite diaphragm.
I did this, not complicated.

90542


https://.casimages.com/img/2022/05/19/Erreur 1

90480

My tech did a similar job (N501a) recently and he used 2 Lpad 100w ceramic (135$ca) and 4 Solen audio grade fast cap capacitors (285$ca)

If you remove the plastic cap you should put felt at the bottom of the lid, I have already replaced that with an 808 to make it an 802 by changing the diaphragm but difficult to say if it is the felt...

Good morning Richard,

Calculating the volume by hand was the last solution considered but I can do it, thanks for the offer but it won't be necessary.
In fact all this stems from my test with...

Thank you, it's a work in progress and I'm very happy with it so far



The 421 refers to info on the Stanley Screamers 1120



I did not have those of 1984 only those of 1986, thank you

Thank you, I'm not surprised because I searched quite a bit. I have 817a's that I currently use with 416-16A's and I have those blueprints as well. Information on the 817a or SS-1120 instead...

Thanks in advance for research.

Hello, I have a question and I can't find the answer....
Anyone know the interior volume of an Altec 817A or Stanley Screamers SS-1120???
Thx

Hi,

OK thanks for these notes. I understand my misinterpretation of the 4355 specs now. I had, several years ago, these 2440, 24441 drivers all in 16 ohms, the 2441 was my favorite for a long...

Hi Barry,

Tell me did I miss something? If I go to the specs for the 4355, the drivers are 8 ohms, no?

A passive crossover is made for specific drivers and in addition the impedance does not match, the result will not be optimal. IMHO I would keep the 2450SL which is a great driver and look for a good...

Hi, Surely, this is what I did with my 2450, I installed the 2451 dia because I much prefer the aquapla's diaphragm.
JBL2450, 2450SL or 2451 have the same motor.

Good idea, I have Decibel X and Spectrum (all free) in my iPhone, you may know better ones but they will always be less precise than a calibrated microphone.

Hi,
Difficult doesn't mean impossible, you want to buy a micro USB with Rew so go ahead, it's not really expensive. In my case this way helped me a lot with the possibilities offered by a DSP for...

About surround material, you also have this information in that document, check the image of 1500AL
And I need sometimes https://translate.google.com/ me too :)

Hello,
Answers here:
http://www.audioheritage.org/html/projectmay/technology/1500al.htm

Small correction: ALAC is rather Apple Lossless Audio Codec, therefore without compression. It is AAC which is Advanced Audio Coding with compression.

With regards :)

Hi,
I have had several Orbans 674A and never had any problems and they are good devices but if you have a little more budget invest in a more modern DSP this is what I did several years ago and I...

:)
But a question remains, what are these cylindrical baffle for the 2397?

Do you refer with this old thread: http://www.audioheritage.org/vbulletin/showthread.php?5042-2397-baffle

Hello,
Me too after several tests with different horns I kept the 2397 then I tried several super-tweeter and I like the result with AMT-1, last year I tinkered with panels following a reading...

Hi, I sold these 846 but I keeped the woofers for my A5 and they are on the older 15 inch frame, I got many 416 16 ohms all on older frame 15" in hammer-tone green, matte finish green and matte...

Hello, with all due respect just a small correction, I had several 846s and I had a pair with black drivers and they were in 16ohms, the color is more related to the year of production.

Here a...

Hello, I currently have 2450/2397s with "SL" aquaplas diaphragms from 2451 drivers that I bought to have their diaphragms that I couldn't find either, I interchanged the diaphragms and I I sold the...

I did it today.
I did not take measures before or after, just listen it and all sound good.


See what I did:

First as you see the foam is in poor shape, dry and fall in little parts when I...

Hi,
I also come to the same conclusion as you, the distorted sound that I have also observed several times comes from Keith's Hammond in my opinion and not from your system because I too can hear it...