Thoughts on 416-8B,601-8D, 2404H build

[GM]

Impressive extension for a 12", though meant tweeter horn measurements, but just remembered the original Duplex design article that tells all.

So if Werner can duplicate the autoformer N3000, then it should in theory protect the driver at modest levels, but any lower will depend on the speaker's eff. + how dynamic* your best recordings are and how loud the highest average listening level.

* this is the gotcha! It appears to be designed for +12 dB dynamic headroom Vs my best recordings having up to +30 dB = 10^(30/10) = 1 kW minus in room eff. just to handle 'fast' transients with most modern recordings 'supposedly' conforming to the HT's +20 dB = 10^(20/10) = 100 W

[ckp]

though meant tweeter horn measurements,

I don't understand this comment. The tweeters are in the images.


Most of what I listen to is of CD quality or better on a DAC. Some albums and reel to reel as well. I have low power tube amps. Although the tweeters are said to be fragile, I remember reading that one guy had them in his nightclub for years under serious duty without issue. I certaintly won't crank these real hard. Thank you

[Old Guy]

I don't understand this comment. The tweeters are in the images.


Most of what I listen to is of CD quality or better on a DAC. Some albums and reel to reel as well. I have low power tube amps. Although the tweeters are said to be fragile, I remember reading that one guy had them in his nightclub for years under serious duty without issue. I certaintly won't crank these real hard. Thank you

Don't believe everything you read

[ckp]

Picked up these little guys over the weekend. They are loaded with 601Cs. I guess I'll be using the 601Ds for the woofers. One way to preserve the tweeters. lol

thumbnail_IMG_4600 by ckp37, on Flickr

[ckp]

I took apart one of my 3000E crossovers. Can't post a picture to save my life. From the computer they are too big and from onedrive it comes up with some gibberish. The pink object in the image is the back of the attenuator.

3000Ejpg. by ckp37, on Flickr

edit: I guess that 4uF capacitor isn't helping the tweeters longevity.

[GM]

Thanks! Pink image? All I see is a wiring diagram. Need to get it added to Dropbox.

[Altec Best]

Much easier right ?

[ckp]

Much easier right ?

Indeed