What I want

glynnw · « **on:** 6 Jan 2016, 09:32 pm »

I want speakers that I can place on top of my GR dual 12" servo OB subs. They must sound better than my current Lowther PM6A's paired with Tone Tubby 12" drivers in an open baffle design from the Lowther website. The new speakers should be 95 dB efficient. The recent talk about DIY being behind the times with wide baffles (Mine are 18" wide) paired with hearing Danny's new narrow open baffles with wings at RMAF a couple of years ago have me considering a change. An ideal solution would be a design for the Lowther that sits on top the subs. I am tempted to just go out in the shop and make a pair that look like Danny's new designs, but he has already said that none of the copycat designs are correct. Fortunately I am happy with the sound of my system, but a smaller footprint in the room would be nice. Just letting you know what I want.

persisting1 · « **Reply #1 on:** 6 Jan 2016, 09:49 pm »

Quote

Fortunately I am happy with the sound of my system

That is key. If you're happy, why change it?

But I do understand where you're at.

Oscillate · « **Reply #2 on:** 6 Jan 2016, 10:06 pm »

"An ideal solution would be a design for the Lowther that sits on top the subs."

Danny does offer speaker & cross-over design services to the DIY'er.
Perhaps your Lowther PM6As can be successfully adapted to sonically
blend with the GR dual 12" servo OB subs?

Early B. · « **Reply #3 on:** 7 Jan 2016, 12:49 am »

Try these: http://www.audiocircle.com/index.php?topic=138878.msg1480006#msg1480006

Folsom · « **Reply #4 on:** 7 Jan 2016, 01:15 am »

Maybe Danny could use your drivers and redesign the whole baffle and any xover with them?

Those OB8's are nice looking, too.

Danny Richie · « **Reply #5 on:** 7 Jan 2016, 01:56 am »

Sure, I can coach you through a new baffle design for them. The one that Early B linked you to would be real close. It uses a baffle designed for an 8" woofer.

Then send me one of them and I'll measure and test it and design you a correction filter for the step loss and rising top end. I'll get you as balanced of an output as the driver will allow.

And not only will it be smoother from top to bottom, but it will image a LOT better as well.

glynnw · « **Reply #6 on:** 7 Jan 2016, 02:37 am »

Looks like I have some work to do. It may take a couple of months, but I plan to follow up about this after I build one of the speakers.
Glynn Wilson

bdp24 · « **Reply #7 on:** 7 Jan 2016, 09:03 am »

The Lowthers are controversial drivers, about whose sound quality there are differences of opinion. Some value and appreciate their "wholeness", others are bothered by their level of coloration and deviation from flat frequency response. With loudspeakers, like everything else, one must pick his poison!

glynnw · « **Reply #8 on:** 7 Jan 2016, 10:42 pm »

I never liked Lowthers, listening to them for years in friends' systems. But when I went to VSAC 2008 I heard these speakers and fell in love. I have not heard an affordable (say below 5-6 grand) speaker since building them that I preferred - but I did like Danny's speakers at RMAF a couple of years ago - tall open baffles. I want to hear my driver in one of his new winged OB designs, and I want it to fit above the subs so I can reduce my footprint. I am even open to new drivers as long as they sound as good as to me as the Lowthers and are at least 95 dB efficient. Next step is mine.

Oscillate · « **Reply #9 on:** 8 Jan 2016, 03:22 am »

"I am even open to new drivers as long as they sound as good
as to me as the Lowthers and are at least 95 dB efficient."

Hey Danny... How would you feel about doing a Wedgie version that
uses the T26SG Tweeter in a conical wave-guide? It seems that many
people come to this forum looking for that 'same something'... And
until y'all source a viable substitute for the Neo 3 PDR, a T26SG Wedgie
might provide an v-e-r-y good, inexpensive alternative? Also if it used
commercially fabricated wave-guide (one that fit the bill of course) the
DIY'ers wouldn't also need to buy the flat pack kit to build it.

Danny Richie · « **Reply #10 on:** 8 Jan 2016, 03:40 am »

Quote from: Oscillate on 8 Jan 2016, 03:22 am

"I am even open to new drivers as long as they sound as good
as to me as the Lowthers and are at least 95 dB efficient."

Hey Danny... How would you feel about doing a Wedgie version that
uses the T26SG Tweeter in a conical wave-guide? It seems that many
people come to this forum looking for that 'same something'... And
until y'all source a viable substitute for the Neo 3 PDR, a T26SG Wedgie
might provide an v-e-r-y good, inexpensive alternative? Also if it used
commercially fabricated wave-guide (one that fit the bill of course) the
DIY'ers wouldn't also need to buy the flat pack kit to build it.

That is actually a really good idea.

And no additional wave guide would be needed.

The reason I used the waveguide with the Neo tweeter was because it was open backed. And the 3/4" spacing of the waveguide made the voice coils align on both sides of the speaker.

So since the back of the T26SG tweeter is sealed then there is no real need for the waveguide. I can get them acoustically aligned with the crossover.

Folsom · « **Reply #11 on:** 8 Jan 2016, 03:56 am »

But a waveguide might reduce some reflections, that otherwise a person is looking at toe-in potentially that'll shrink the area behind the woofers (LGK's).

I'm using the T26SG right now, and my speakers are best crossed over in front of me because of my small room, and inability to get the speakers a long ways from the sidewalls (I'd prefer 3', but land about 23" because otherwise the center is too small and overlap is a problem when I go past that).

Plus something very new would be fun, because it wouldn't resemble your other stuff.

Danny Richie · « **Reply #12 on:** 8 Jan 2016, 04:53 am »

What reflections? The baffle is only 4.5" wide on the Wedgie.

And that thing images like nothing else out there.

Danny Richie · « **Reply #13 on:** 8 Jan 2016, 04:55 am »

Great thread by the way. What else would you guys like?

Folsom · « **Reply #14 on:** 8 Jan 2016, 05:02 am »

Reflections from the room. I'd agree that reflections from the T26SG from baffle aren't really a concern. Felt doesn't seem to do much of anything. But if the dispersion was narrowed some it seems it would reduce toe-in for rooms that aren't huge.

Jonathon Janusz · « **Reply #15 on:** 8 Jan 2016, 02:01 pm »

Danny, I think the wave guide being asked about is the one on the front of the T265G, not the need for the one on the back of the OB neo3. Maybe an extension to the existing one built in to the front plate of the tweeter now? Might even be doable similar to the adapter plates you had made for the X-LS classic to encore upgrades?

Also, would adding such a thing - either way - and physically aligning these tweeters to the LGKs allow you to not HAVE to align the drivers with the crossover, in some way simplifying or minimizing the crossover, a crossover I'm presuming being an exercise in "just enough but no more" in the design of a speaker?

Danny Richie · « **Reply #16 on:** 8 Jan 2016, 03:17 pm »

Ah, I see what you're saying now.

But the waveguide won't have a lot of effect minimizing the off axis response until you are out more then 45 degrees.

And various waveguides like that will then require some CNC work to make them. I have already put a lot of work into that area using the T26SG tweeter.

Keithh · « **Reply #17 on:** 8 Jan 2016, 05:15 pm »

Quote

What else would you guys like?

M130/T26SG MTM(8 ohm) and TM would be great.

Danny Richie · « **Reply #18 on:** 8 Jan 2016, 05:29 pm »

Quote from: Keithh on 8 Jan 2016, 05:15 pm

M130/T26SG MTM(8 ohm) and TM would be great.

I have about 300 to 400 GR-T3 tweeters left. When those are gone I may redesign the A/V Series models using the T26SG.

Good thought. I have been thinking it too.

Captainhemo · « **Reply #19 on:** 8 Jan 2016, 07:10 pm »

Quote from: Danny Richie on 8 Jan 2016, 03:17 pm

Ah, I see what you're saying now.

But the waveguide won't have a lot of effect minimizing the off axis response until you are out more then 45 degrees.

And various waveguides like that will then require some CNC work to make them. I have already put a lot of work into that area using the T26SG tweeter.

hmmm, would the Peerless tweeter play much lower in a deep waveguide (think I've seen some in a 1.5" baffle

)

jay