The info on the Slant 6 was more for anyone that was going to do a reworkring of any Stage,Centaur,Minor 26"MT....An had not seen the info.
Not just you....Bill...
An I stated that in the post..
But if I were going to do a rewoking of my minors...and I am not... I would wont to get the most out of my new MT ribbons.... then add me bass, mid whatever drivers!
But this is just one mans o-pine....
So good luck... I hope your new Speakers are the best..........
Not just you....Bill...
An I stated that in the post..
But if I were going to do a rewoking of my minors...and I am not... I would wont to get the most out of my new MT ribbons.... then add me bass, mid whatever drivers!
But this is just one mans o-pine....
So good luck... I hope your new Speakers are the best..........
Bill,
I don't know if it's a native language thing, or if he's just horribly lazy with his writing, but it's next to impossible to have a coherent conversation with tyu. You end up spending triple the amount of time you normally would trying to decipher what he's saying. 🙂 It's very tiring....IMHO....and I no longer read his posts.
It's unfortunate, in some ways, because I think he really does have some knowledge and good information, but he just can't relate it effectively.
Your Minor project sounds interesting.
Cheers,
Dave.
I don't know if it's a native language thing, or if he's just horribly lazy with his writing, but it's next to impossible to have a coherent conversation with tyu. You end up spending triple the amount of time you normally would trying to decipher what he's saying. 🙂 It's very tiring....IMHO....and I no longer read his posts.
It's unfortunate, in some ways, because I think he really does have some knowledge and good information, but he just can't relate it effectively.
Your Minor project sounds interesting.
Cheers,
Dave.
Thanks for that Dav.......I gess it takes one to know one..
I gess for one min you could not find anyone in your web troooling to put down ......Hehe..
I gess for one min you could not find anyone in your web troooling to put down ......Hehe..
Bill,
I really like the idea of using multiple woofers next to the ribbon driver. Even smaller (than the existing Vifa) drivers would be suitable in my opinion. Open-baffle and equalized to create the proper response and then mated to some external woofers.
For a prototype, I removed one of the MRT's from my Duetta's two years ago and mounted it to a midrange baffle consisting of six 6" drivers in a vertical line. Something similar will work extremely well with your Minor ribbon too.....IMHO.
I got busy on other projects so that one is collecting dust now. I'll get back to it later.
Regarding base-lining of the Minor crossover......I would suggest you make an electrical measurement at the driver terminals for the ribbon. This will properly characterize the notch filter and show any shelving that might be happening. (Since the published schematic is in question.) This will also yield a reference should you want to duplicate it with an active crossover.
Cheers,
Dave.
I really like the idea of using multiple woofers next to the ribbon driver. Even smaller (than the existing Vifa) drivers would be suitable in my opinion. Open-baffle and equalized to create the proper response and then mated to some external woofers.
For a prototype, I removed one of the MRT's from my Duetta's two years ago and mounted it to a midrange baffle consisting of six 6" drivers in a vertical line. Something similar will work extremely well with your Minor ribbon too.....IMHO.
I got busy on other projects so that one is collecting dust now. I'll get back to it later.
Regarding base-lining of the Minor crossover......I would suggest you make an electrical measurement at the driver terminals for the ribbon. This will properly characterize the notch filter and show any shelving that might be happening. (Since the published schematic is in question.) This will also yield a reference should you want to duplicate it with an active crossover.
Cheers,
Dave.
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An array of small drivers does have some charm, but budget does not stretch to that at the moment. might model response to have a look.
I also found the northstar website, which has some background on the ribbon. It does peak between 5 and 10KHz, which is why there is a low Q notch there. There is a suggestion there that the stock notching is still too bright in room, but that is something i will just have to measure.
I also found the northstar website, which has some background on the ribbon. It does peak between 5 and 10KHz, which is why there is a low Q notch there. There is a suggestion there that the stock notching is still too bright in room, but that is something i will just have to measure.
North creek??
Yep, more drivers equals more money. However, there are some fairly inexpensive offerings in the 5" range that might work well. The more you use, the less hard they'll get driven and the better they'll sound....theoretically. 🙂
Dave.
Yep, more drivers equals more money. However, there are some fairly inexpensive offerings in the 5" range that might work well. The more you use, the less hard they'll get driven and the better they'll sound....theoretically. 🙂
Dave.
Bill,
I know you're on the other side of the pond, but check out some of the "special" offerings from Madisound for decent smaller drivers.
https://www.madisoundspeakerstore.com/specials/
Dave.
I know you're on the other side of the pond, but check out some of the "special" offerings from Madisound for decent smaller drivers.
https://www.madisoundspeakerstore.com/specials/
Dave.
Some temptations there and if I don't get to sonic nirvana with the current plan I may go for that. I have considered routing out the current baffle so I can bolt any combination of drivers over the hole.
North Creek ....I posted some info on other pages in this post.....
We all know Bills not working on the MT....but other may find the Stage Crossover helpful...
The Stages MT lower crossover point can sounds good ..... If you have not heard the Minors with the same MT set at a higher crossover point.... so that the MT never gets hot...or moves vary littel....
Stage MT moves the base output up to the ear..... because the MT when pushed move all over the place an get hot....that rolls the MT output down even more....So much movement that Apogee came up with a MT ribbon support tiy down...go here an look under.......http://www.apogeespeakers.com/manuals/stage_midtweeter_replacement.pdf
this is what I have found after owning 1 pr of Deutta Sig... 5pr of Stages..........An 2 pr of minors...........
Keep up the good work ,I have had Apogee from 92 an have never seen one post of any one reworking a pr of Centaurs....the more info the better.
We all know Bills not working on the MT....but other may find the Stage Crossover helpful...
The Stages MT lower crossover point can sounds good ..... If you have not heard the Minors with the same MT set at a higher crossover point.... so that the MT never gets hot...or moves vary littel....
Stage MT moves the base output up to the ear..... because the MT when pushed move all over the place an get hot....that rolls the MT output down even more....So much movement that Apogee came up with a MT ribbon support tiy down...go here an look under.......http://www.apogeespeakers.com/manuals/stage_midtweeter_replacement.pdf
this is what I have found after owning 1 pr of Deutta Sig... 5pr of Stages..........An 2 pr of minors...........
Keep up the good work ,I have had Apogee from 92 an have never seen one post of any one reworking a pr of Centaurs....the more info the better.
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Been collecting some more data on crossovers. Now running the published minor crossover (which may not be right) gives a 750Hz crossover point. but the reviews all say 1KHz. Ah well. I am looking going to LR4 active crossover, so thought would be interesting to compare passive LR2 at 1KHz to active LR4 at 750Hz in terms of levels at low frequency.
Frequency LR4 delta (dB)
1Khz +6
750Hz +2
500Hz 0
350Hz -2
250Hz -12
These are give or take as not done calcs yet, just mk1 eyeball. But it is clear that it gives a choice. You can run the crossover to the ribbon lower and still get more protection for the ribbon. So far so obvious.
If you then look at the Fane numbers for power distribution you find that 500Hz is the 60/40 point where 60% of the power goes to the bass, so this is a good point for the ribbon to be on a steep roll off.
But for a laugh I then compared 1Khz LR2 with 500Hz LR4 and at 250Hz they have identical roll off. All text book again, but for a 5% increase in power to the ribbons you get a 500Hz extension in frequency coverage AND better attenuation at the lower frequencies that cause ribbon twisting.
Something else for me to mull over anyway...
Frequency LR4 delta (dB)
1Khz +6
750Hz +2
500Hz 0
350Hz -2
250Hz -12
These are give or take as not done calcs yet, just mk1 eyeball. But it is clear that it gives a choice. You can run the crossover to the ribbon lower and still get more protection for the ribbon. So far so obvious.
If you then look at the Fane numbers for power distribution you find that 500Hz is the 60/40 point where 60% of the power goes to the bass, so this is a good point for the ribbon to be on a steep roll off.
But for a laugh I then compared 1Khz LR2 with 500Hz LR4 and at 250Hz they have identical roll off. All text book again, but for a 5% increase in power to the ribbons you get a 500Hz extension in frequency coverage AND better attenuation at the lower frequencies that cause ribbon twisting.
Something else for me to mull over anyway...
Hi,
I have Apogee Stages in Mini Grand configuration, 2 diy subs added, 3-way active system with digital xo-dsp, tried everything from 350 to 1000Hz, 6/12/18/24dB but find out 24LR at 700Hz as the best compromise for the 26 inch MRT. Subs are x-overed at 80Hz.
I have Apogee Stages in Mini Grand configuration, 2 diy subs added, 3-way active system with digital xo-dsp, tried everything from 350 to 1000Hz, 6/12/18/24dB but find out 24LR at 700Hz as the best compromise for the 26 inch MRT. Subs are x-overed at 80Hz.
Dose anyone know if Graz sends the Suspensions peaces like Apogee used with there ribbon replacement.....to tye the ribbon down at 11.5'?.....Or dose he even suggest this be done with his 26"MT?
This has to give better output an less movement.....so you could crossover lower..
But the ribbon would still get Hot....maybe ever Hoter!....Only 26"MT I have ever saw cooket was on a pr of centaur.... that's crossover on the MT is close to the stages...it look like it was twice as big...it was just hanging there...for sale on CL....the guy tride to tell it still worket ....but he would not play them for me so I pass....
I do know Apogee went on to add 4ea more magnets at the top an bottem on each side of the MT.. to fill the small gaps that's there..for more output....those were the ones in the Slant 6 an mini Grand...an on the new MT...what were reported to be Briter...who knows I never heard them...
This has to give better output an less movement.....so you could crossover lower..
But the ribbon would still get Hot....maybe ever Hoter!....Only 26"MT I have ever saw cooket was on a pr of centaur.... that's crossover on the MT is close to the stages...it look like it was twice as big...it was just hanging there...for sale on CL....the guy tride to tell it still worket ....but he would not play them for me so I pass....
I do know Apogee went on to add 4ea more magnets at the top an bottem on each side of the MT.. to fill the small gaps that's there..for more output....those were the ones in the Slant 6 an mini Grand...an on the new MT...what were reported to be Briter...who knows I never heard them...
@Damic: Interesting. What differences did you observe going away from the 700Hz that was the sweet spot for you.
@tyu: I will find out soon enough if you get the suspension piece.
@tyu: I will find out soon enough if you get the suspension piece.
Yes.........All but the black cap...must be a by-pass...what is it a 1mf?
your bass an MT look like new...killer...... if those are your pr.....the MT in your pic still have the space at the top an bottem where the magnets are....it was done that way so when thay move thay would not tair the aluminum...there no mags so there no output there.. ...the later MT had no space more magnets were added but the Suspensions peaces had to be added ..
so those are the frist older MTs
Top in pic is the stock in all 5 pr I have had....bottem is the killer upgreat done by NC....I have put some of his fixs in my lates pr of Stages....big diff in sound... George Short work with Jason...on the stages
your bass an MT look like new...killer...... if those are your pr.....the MT in your pic still have the space at the top an bottem where the magnets are....it was done that way so when thay move thay would not tair the aluminum...there no mags so there no output there.. ...the later MT had no space more magnets were added but the Suspensions peaces had to be added ..
so those are the frist older MTs
Top in pic is the stock in all 5 pr I have had....bottem is the killer upgreat done by NC....I have put some of his fixs in my lates pr of Stages....big diff in sound... George Short work with Jason...on the stages
Attachments
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Bill thanks for your time.....I thought he may have said....I have toyed with the idea of add the Suspensions peaces ....that are clear thin plastic.an can be made
I have seen them I cant find the pic.....But theres no going back if added. trying to remove them may kill the ribbon.. But I am a Nutjob...
so if you do get them.... an get better sound I may have to
In my dreams I was thinking the 11.5" pull back point may set the ribbon up too give a higher image...gofig
I like the tone... of the Stages on the floor....not on the stans.....I have stans but....thay thin out the sound....but the stans give a taller image....tradeoffs...life
I have seen them I cant find the pic.....But theres no going back if added. trying to remove them may kill the ribbon.. But I am a Nutjob...
so if you do get them.... an get better sound I may have to
In my dreams I was thinking the 11.5" pull back point may set the ribbon up too give a higher image...gofig
I like the tone... of the Stages on the floor....not on the stans.....I have stans but....thay thin out the sound....but the stans give a taller image....tradeoffs...life
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