Does Anyone have any Info on the "RodSpeaker"

[mikebake]

[mikebake]

[demon]

besides the amusing quarrel i find this thread quite informative.
the "rodspeaker" ad is simply hilarious, and the speaker itself looks interesting. good proportions in my opinion.
im happy having learned about it.

cheers,
mikey

[Mr. Widget]

besides the amusing quarrel i find this thread quite informative.
the "rodspeaker" ad is simply hilarious, and the speaker itself looks interesting. good proportions in my opinion.
im happy having learned about it.

I felt exactly the same way.

In fact this sort of thing is what keeps me coming back to the forum. There is always something new to discover...

Too bad about the personality issues though.


Widget

[RussinOhio]

Have to wonder where this system is today, if it still exsist at all.


Russ

[Earl K]

I made some scans:

Thanks for doing that / they've been extremely useful .

What magazine did you find them in ? ( R.E.P. , db Magazine, Modern Recording, ???? )

Might that "supertweeter" just be a 1" driver bolted to the back of a plate?
Have seen that done before on $$$$ monitors of yore. Not that I care all
that much... just looking at visual clues, especially in the lightened up
enlargement. :dont-know

- Yes, that's sure what the new scans appear to show, to these eyes .

Looks like it to me... and with that bolt pattern it would likely be an 800 series Altec beaming right into Rod's knees.

- OTOH, "Apparent Beaming " may not be as great, as one would assume .
- That sudden ( 70 - 90 degree ) termination of the throat will encourage some HF diffraction / giving a wider pattern than what's "seen" . Fostex tweeters use this phenomena to some effect .
- ie; it could be worth simulating this UHF setup and then measuring the polar patterns .
- I still agree that the low speaker placement in the picture is pretty poor .

besides the amusing quarrel i find this thread quite informative.
the "rodspeaker" ad is simply hilarious, and the speaker itself looks interesting. good proportions in my opinion.
im happy having learned about it.

I felt exactly the same way.

In fact this sort of thing is what keeps me coming back to the forum. There is always something new to discover...

Too bad about the personality issues though.

Widget

- Yea ( too bad about all that noise ) .
- Sometimes I choose to get involved in a thread because I feel the "concept" has some merit and hasn't yet been explored here ( to date ) or in any of the other usual forums .

<> cheers

ps ; I'm not finished here ( unless the op gets back on his soapbox ). I'm just catching up on some wiring projects that are for this weeks' work .

[Mr. Widget]

- OTOH, "Apparent Beaming " may not be as great, as one would assume .
- That sudden ( 70 - 90 degree ) termination of the throat will encourage some HF diffraction / giving a wider pattern than what's "seen" . Fostex tweeters use this phenomena to some effect .

Interesting notion.... it would be interesting to follow up on, though I don't feel any 1" drivers are true super tweeters.


Widget

[Fred Sanford]

Pretty sure I'd first seen that ad in Playboy.

je

[John]

Think I saw it in Rolling Stone.

[Skywave-Rider]

No

Hi,
Can't respond to your PM, tried.
To answer your question,
I used an Epson Workforce 310 scanner/printer. Too small to do the entire ad in one scan.

I don't understand why you replied "no" and quoted me saying "I made some scans" in your post number 30.
http://audioheritage.org/vbulletin/s...7&postcount=30

Maybe something was deleted by you or the moderator? Just seems odd. Anyway, I don't come to this forum too much, perhaps I missed something.

Good luck with your speaker building.

Thanks for doing that / they've been extremely useful .

What magazine did you find them in ? ( R.E.P. , db Magazine, Modern Recording, ???? )

Earl, I bought a repro of the ad from a guy on EBay. It's a great ad. I have it next to my 9844s in my office. I'd wondered for a long time what that tweeter in the RodAd could be.

[BMWCCA]

Can't respond to your PM, tried.

Best is on "vacation" from this forum for one week. Try him again in about five days.

Maybe something was deleted by you or the moderator?.

I think you may have hit upon the reason.

[Skywave-Rider]

Best is on "vacation" from this forum for one week. Try him again in about five days.

Not necessary, I'm sure he read my response.

Have fun, kids.

[robertbartsch]

Are the tweeters in Post 36 above "one-offs" except Fostex or are they conversions of other production 1" compression drivers with custom fabricated horns?

They remind me of 075 bullet nose tweeter designs that have been "ripped-off" and modified using some metal stock and a lathe for the unique horns.

I'm reasonably sure JBL had patents on 075 tweets but they were introduced very early and patents run out in 15 years.

Anyway, these are interesting. I don't believe I have seen any of these before now.

[Earl K]

Are the tweeters in Post 36 above "one-offs" except Fostex or are they conversions of other production 1" compression drivers with custom fabricated horns?

Those 3 are all current Fostex tweeters available from Madisound.
They've been making similar "bullet style" tweeters like that, since the 1980s .
Here's are some pics of the more affordable models ;

[Doc Mark]

Interesting notion.... it would be interesting to follow up on, though I don't feel any 1" drivers are true super tweeters.


Widget

Morning, Mr. Widget, and All,

I got to thinking about this, and remembered that I have a pair of Altec MR902-16HF drivers, that came to me without the little Mantaray horn. I used them, for many years, in a PA situation, and later in my home stereo, and always with much satisfaction. I always thought that, without the MR horn (which Altec rated as offering 60°x40° dispersion), they were nothing more than regular 902 drivers, and used them as such, crossing over to them at 1,200 HZ (Community Horns/ 60x40). They always came across to me as sounding very smooth and (dare I say it?!) "sweet"!

Since Altec rated this driver, with it's "Tangerine phase plug, up to 20KHZ, it's very possible that they did use it behind the plate in those "Rod Speakers", as a HF tweeter driver. I know that, somewhere down in the Hobbit Hole, I have a magazine with that original ad that began this thread, don't have time to dig for it, right now. Interesting, nonetheless..... Take care, and God Bless!

Every Good Wish,
Doc