Apogee Stage – substitute for woofer panel, ideas/suggestions

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Project complete and works great. Still optimizing equalization, but will finish that later. The weather has been great so working on some non-audio projects. 🙂

Next step is re-painting the covers. I'm not sure why I selected Taupe many years ago because I quickly grew tired of that color. 🙂 I think I will paint them black.

Dave.
 

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As I posted before... Glasher Audio makes a great sounding speakers with bass driver an a ribbon MT like your setup.....thay don't have the ...what I will call better free hanging MT of Apogee.....how about the old charcoal gray...hehe
like my stages....black...lot people like it....will you cover the bass drivers?
thanks
 
That's Glacier Audio. Yes, their speaker system is not dissimilar to this, but has a number of issues....in my opinion.

Regardless, this thread is aimed at getting Apogee Stages back on the air, and a project similar to mine is one option. FWIW.

Dave.
 
Dave.......
Have you "finished"(I know DIYers never really finish) your "daveyettas"?
Any updates?
I will soon be making some baffles for a similar project, using my 26" Centaur ribbons and
8 no-name close out 6-1/2" mid woofers from PE(4 per side @ $4.88ea) and just wondering how your projject is coming along?
Cheers
Peter
 
Yes, I finished them....as in....I had them playing and sounding fine. I still need to temporarily remove the woofer baffle, ribbons, (I constructed everything so I could do all that easily) and repaint the whole works....covers too.
This project has moved to the bottom of my to-do list at this point. It was more a proof-of-concept effort than anything else.....to provide a possible alternative for the OP's original query, and to hopefully help some DIY-inclined Apogee owners who simply can't afford an expensive refurbishment procedure from one of the Apogee installers.

The backlash regarding my efforts was not unexpected. 🙂

Graz actually contacted me offline after this evolution and queried me about possibly changing/relaxing his stance on DIY support. (At least that's what he intimated.) I told him I thought it was a good idea....in concept. However, he was extremely coy and wouldn't relate any specifics of what he had in mind. Based on more recent Apogee developments, it seems he might have abandoned any interest in that direction. However, I'm just speculating.

As always, I advocate those Apogee owners who are DIY-inclined to go forth and experiment with possible repairs. Olaf has identified an excellent alternative with the silicone treatment, but there may be other options as well.

Cheers,

Dave.
 
Thanks for the heads up, Dave.
Mine too, is an evaluation project.....just trying to educate myself and have fun at the same time.
Bill, I'll report on my developments with the ribbon/OB as it progresses. It may be a little while though. If these cheapo drivers work out, I'll 'upgrade' one channel with my 4 Peerless Nomex drivers, two of which are doing sterling duty in my version of the LXmini at the moment, and do some comparison. Same baffle cutout and spacing.

Peter
 
26" ribbon with 4 woofers

This is my first effort at putting the cheap PE 6-1/2" woofers on a panel with the 26" ribbon. The OP may be interested in this.
The drivers arrived in 2 days, so I picked up a piece of decent oak faced plywood at Lowes, cut the add-on panels and joined them to my existing cherry ribbon faceplates. I had some rather flimsy shelf brackets that I screwed to the rear of the panels and used some machine screws and nuts to make levelers. Good enough for initial listening.
I wired the woofers series/parallel and biamped with my minidsp.
Very little EQ so far and lower mid/upper bass is flat down to 100Hz, a little boost below that. Crossed 12db at 700hz. I had to attenuate the woofer input by 17db. The best panel performance I have achieved so far with my various attempts at OB speakers. And the silky TM is as good as ever. No sub being used yet. Just reveling in how good these sound.
The overall panel dimensions are 18" x 36". Shown alongside my version of the LXmini for comparison.
I believe this project is worth pursuing, and I intend to make a back panel to cover the entire speaker with cutouts for ribbon waveguide and woofers.
I may even make the panel wider at the base(a la Apogee Stage) to improve stability and looks(?).
Would someone give me the horizontal panel dimensions of the Stage, please?
Cheers

Peter
 

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Pretty cool. The basic concept with this type of conversion is robust. You'll have a difficult time not achieving good results....I believe.
It's just a matter of optimizing the necessary equalization and understanding the big sensitivity difference. 17db is quite considerable, yes? 🙂

A trapezoidal shape would be cool. Understandably, it will spread out the response of the additive peak.....and thus your equalization would need to be adjusted accordingly.

And you didn't have to spend too much money either.......I like that aspect the best!

Dave.
 
Stage....size ..Height....98cm Width....67cm
Looks good.....I would have went a little taller....
I have the Apogee Minors an stands..... but don't care for the sound... the Minors driver panels sets on the stand panel .........................................but that's me..
thanks for the pic
 
Thanks for the comments guys.
Dave....yes, it does seem rather fortuitous that this cheap assembly came together so readily. Further listening and measuring at the listener location resulted in a little more tweaking. The dipole peak seems very gentle, and the only significant blip in the lower region was a sharp 6-7db drop at 200hz. I currently have a -5db high shelf at about
1200hz. Bass at the listening location(8ft) is flat to below 80hz.
Tyu.... What is the horizontal dimension of the top of the Stage?
Bill.... Sorry!

Peter
 
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