Will be interested in seeing that if you do.
Had a quick play with damping with some RPG profoam that I have. Makes a big improvement so need to come up with something with more WAF. But sounding better each day, so maybe ribbons do need to bed in!
Had a quick play with damping with some RPG profoam that I have. Makes a big improvement so need to come up with something with more WAF. But sounding better each day, so maybe ribbons do need to bed in!
A little Added damping can make a Big diff....in my room to day 18'X25'...all I have to do is put two bath towels....in the room an the Minors An Stages pull togather a tighter sound stage....but got be ezey are in a small room the topend can be pulled way down.....but my Ribbons are not new...great info
Hi All, would you classify this is a point source or a line source now as the ribbon is not directly under the Bass driver. I currently build a similar speaker to this but the ribbon sits in line with the centre of the bass driver perhaps I should move the ribbon slightly inside to where Peter has put his ribbon? I believe Apogee,s thinking with the point source was to keep the driver away from the floor to not encourage floor reflections. Soul sonic beat speakers have a line source method but the driver is angled substantial upwards.
That is something i am trying to work out, but need to refresh too much accoustics theory to give any sort of qualified answer yet.
Bill
P.S. have read your thread, and had I not just splashed on new Graz ribbons would have been tempted.
Bill
P.S. have read your thread, and had I not just splashed on new Graz ribbons would have been tempted.
Hi Bill, yes its certainly an interesting question I am going to try and simulate the offset ribbon shortly. I experimented today with the Soul sonic Beat angled bass driver and upright ribbon and can say that it sounds incredible really detailed in the midrange and not smeared by the bass. I know Miro the manufacturer of Soul Sonic speakers has literally built hundreds of speakers and if that is his answer to a 2 way ribbon hybrid you better believe there is valid reason in theory behind this design. I have attached a few images of what the angle I used.
Hi Africa
What is the crossover point for the ribbon?
Dose your ribbon move, twist?
Apogee did use a suspension peace for some of there ribbons.
looks vary cool....... thanks for pic....
What is the crossover point for the ribbon?
Dose your ribbon move, twist?
Apogee did use a suspension peace for some of there ribbons.
looks vary cool....... thanks for pic....
my gut reaction is that, with the smaller hybrids it is to prevent vertical lobing problems at a 750-1000Hz crossover. If you can get the ribbon down under 500Hz then I suspect it is less of a problem. But all total conjecture
Bill, what's your thoughts on a side firing bass driver crossed at say 350hz as opposed to front firing? Has anybody listened to a Apogee hybrid and a carver AL lll I would have liked to hear the carver to see how the bass and ribbon integrated compared to the Centaur.
I sold an owned the Carver AL3 in the 90s...........Bass an ribbon never match!
look vary cool, thankfuly....people lov the look...on paper looket right....but sound wize...Nogo maybe if the AL3s bass was ran with active crossover ....it was the box I think.....look like a 1/2" port....
Apogee Centaur ..... MT/bass were much better match...
Do you fell you lose any output from the ribbon with your 3m attachment of the ribbon?
look vary cool, thankfuly....people lov the look...on paper looket right....but sound wize...Nogo maybe if the AL3s bass was ran with active crossover ....it was the box I think.....look like a 1/2" port....
Apogee Centaur ..... MT/bass were much better match...
Do you fell you lose any output from the ribbon with your 3m attachment of the ribbon?
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Tyu, that,s good to know my concern is point source vs line source as Apogee applied point source. IM not sure if im loosing output but im gaining control and reducing distortion.
I have Carver Platinum Oaks with the 60" ribbon, I found bi-amped direct hookup with dsp worked really well, Driverack 482.
PS: as a side note my krell ksa 100 smoked my diva mid ribbons the other nite, wasn't even playing loud, none of my other amps even moved the ribbon at far louder levels,
PS: as a side note my krell ksa 100 smoked my diva mid ribbons the other nite, wasn't even playing loud, none of my other amps even moved the ribbon at far louder levels,
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Al,
More detail on this please. Some sort of malfunction with your Krell amp??
Dave.
I think it was the dc offset as it was hooked direct to the mid ribbons, tweet is ok ,protected by passive, dc average was around 60mv at teminals. other amps are below 10mv, only reason I put it on was my Threshold S300 thumps on turn on, can't believe how twisted up they are and sagged out.
Al
Al
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