Stereo Imperial

thats a pretty nice looking IMP.
who would have thought of using drivers on the side and reflecting the sound.

WOW!  It looks like an antique.  Good work!

Hey Buzz,
That is a cool Idea you came up with there!!!!
Is that Imperial scaled up or is your wife a very petite gal?
The original Imperial is 62" or 63" tall.
What did you do (if any) to modify the driver chamber size?
Did you extend the throat any? This can be done by running a board down the front behind the (what would normally be) the front baffle thus narrowing the throat a bit for better or more optimal loading at low bass frequencies. This information I read in the tech papers by Jensen engineers at the time of the design (1956?) Interested to hear what you did with these points of detail.
If it is as simple as doing a standard Imperial and putting the drivers and wings on you may well have revived the standalone console stereo!!!

I forgot to add that the 'wings' are on hinges. The reflected sound can be focused from a tight window with tons of detail (critical listening), to a room full of stereo sound with less detail (party time!).

Nothing is new under the sun. The JBL is proof. Speakers that use reflected sound probably have been around since the begining of audio. Thank you for the info. Now I may try to build that paragon! I wonder what drivers are availible for this application... Any Ideas? And what in the world is a "Ring Radiator Overtone Reproducer"? ???

Buzz

You are an experimenter.  Here is something you might want to try.  If your room responds the same way mine did, you will be shocked, stunned, and amazed.

Turn your Imperial around so the horn fires directly into the corner.  You will have to reverse your deflector "wings".

Also, if you haven't read Steve's paper "how to set up a room with no treatment", available under the "my room" tab on the Decware home page (www.decware.com), you might find that interesting as the second half of the paper basically talks about a setup that you would have if you have a single sub in the corner of a listening room with your mains positioned appropriately on either side of the sub.

If you try this, please let me (us) know what your results were.  My room sees a bass increase of 6db plus a wonderful feeling that the bass is enveloping you rather than just being played at you.

Dan

[quote author=buzz  link=1165629295/0#3 date=1165651412]Steve gave me the idea one day when he mentioned that he had played around with using a cd to horizontally disperse the sound of an up-firing driver. I then tried all sorts of speaker arrangements using various 'reflectors' in the coming months. In my tests I was blown away to hear the 'hyper-stereo' imaging in this arrangement. If you want to hear the effect yourself, turn your drivers 90 degrees away from your listening spot and use LP covers as reflectors. The real magic happened when I bowed or curved the cardboard covers. The transformation was absolutely stunning...  from a beamy driver, with my head locked in a vise to get imaging, into speakers with a HUGE sweet-spot! Dispersion like the Gallo Reference 3.1 tweeter but FULL RANGE. And if you get that effect using a piece of cardboard, imagine how great a properly designed arrangement can sound.

Even my wife loves the speaker!


[/quote]

whats going on in bottom left corner of this pic? there seems to be a piece of wall out in the middle of the room?

???