My SRS Refurb project

You're correct, GospelTruth. That's why I was playing with angles and steps and so on, in an attempt to compensate for this, trying to find an arrangement that would still work at the optimum listening position in the room. I may never make them if I cant figure out an arrangement that seems to hold some potential to accomplish what you've stated. What the notion I was counting on is that two side-by-side mids, playing the same exact same signal, will seem as one mid with the sound originating approximately from the midpoint between them. Changing the angle of the face of the front baffle was intended to make those points with respect to the stereo and dimensional pairs seem to converge enough to make the lines roughly parallel, preserving the SDA effect. The problem I was running into with the very first picture is while it seemed it might accomplish that with the stereo and Dimensional pairs, the tweeters dispersion might well leave a hole at precisely the optimum listening position. In short, with the tweeters toed-out, if you think about the sound they're producing as emanating in a cone, that cone is too narrow to cover the optimum listening spot in the room. Not good. So then I was discussing step arrangements of the front baffle with Westmassguy, in an attempt to preserve the narrowing of the distance between the stereo signal and the dimensional signal while addressing the tweeter dispersion issue. After playing with that last configuration, it became clear to me that this wouldn't work either, because while correcting the tweeter issue, it reintroduces the problem with the SDA effect. So at this point, I have no solution. What I will wind up doing is a much more detailed drawing, taking actual measurements in the room to see if there is any plausible configuration of the drivers which will both a.) work within the confines of the space limitations and b.) meet the intended goal of making the speakers work correctly as heard from the optimum listening position. If I can't accomplish that,they never get built.

Thanks! Mark

Drumminman, Thanks! Thing is, there are those reading my ramblings who are now firmly committed to the notion that I don't know anything about SDA technology, and they could be right...LOL It's all fun. I like the challenges. It's why I wanted so badly to try out my custom center: Can it be done and sound reasonably correct? Apparently, yes. My SDA-1B.BSs may never get off the drawing board, but it's fun to play with.

Thanks again!

Mark

Mr.Bubbles,

I had considered just using 2B innards to accomplish what you describe. Like I said, this is drawing-board speculation/mental contortions. I was hoping that with the drivers side-by-side, the ears/brain would perceive them as a single point, each pair, but I must admit I see the logic in your description. A flat-faced 2B arrangement would certainly be easier to engineer. And I do have a set of 2Bs not currently in use. (Muhahahahahaa!)

I didn't really think anybody would be "hating." I was just being a goofball.

Mark

As long as it doesn't cause harm...much... May give it a try.

Thanks!

Mark

Mr. Bubbles wrote: »

Me on the other hand, I like catching the cats and wrapping their feet in tinfoil and watching them walk around. or tying helium filled ballons to their tails and watching them try to get away from them. I'm really surprised my wife married me after seeing the way I tormented her cats when we were younger. I guess I've bored with it as I got older.

We'll be keeping an eye on you...

No Mr. Bubbles, my room is not huge. That said, as I mentioned in another post, I am accumulating/building what I want for the day when that condition changes. My intention is to play these speakers at sane levels given my environment of the present, enjoying them thoroughly, while planning for the day the room that houses my gear will be one that had been purpose-built around them.

TNTsTunes,

The SDAs can produce an excellent theater effect. I'm really looking forward to the day I can move all of mine into a room optimized for their virtues.

Back to the SRS refurb, the PathAudio resistors arrived today, and I picked up my aluminum pieces for the backside of the crossover plates, on which whatever board arrangement I choose will ultimately be mounted.

Piece at a time, right? 20 tweeters due in tomorrow.

Mark

I decided that the SRSs and the center were enough for tonight. Did some direct before/after comparisons. The RDO-194s are definitely a huge upgrade from the SL2000s. This definitely should be the first upgrade on everybody's list.