[rajacat]

I agree. I'd love to hear these! Do you have measurements you can share?

+1

[bjarnetv]

I agree. I'd love to hear these! Do you have measurements you can share?

+1

i have some old 0-70 degree measurements from when the speaker looked like this:


as they were only baffle-shape prototypes, the XO and EQ was unimportant, but it shows that dispersion is pretty good from top to bottom 

the mic was placed 80cm away from the speaker, aimed between the mid and tweeter. no gating.

hope to resolve the mic issues soon... 

[dcc1433]

far left and Far right….X-statix from AV123

[Danny Richie]

far left and Far right….X-statix from AV123

I really love those things.    Great speakers.   

[jparkhur]

[R_burke]

GR Research OB5s and Tekton OB4.5s

[jimbones]

[bladesmith]

Very nice.

Any information about them ?

[jimbones]

Sure it's a dayton RS270 xO at 300 and a Peerless HDS 6.5 mid xo at 2500 to a SB29 tweeter all 2nd order and mid polarity inverted. The cabinet internal volume I think is 1.7 cu ft. I can send schematic if you wish. Also since I believe speaker project is never "done" if there are any changes in the drivers someone would make please suggest. I am always looking to improve. BTW the XO parts are all good quality caps (Jantzen). I will be upgrading the internal wiring and binding posts.

[bladesmith]

Jimbones,

I think it looks very good. Very nice design.

 

[FredT300B]

Dayton Audio PS220-8 full range over a powered H-frame Eminence Alpha 15. The network is a parallel notch filter that very effectively tames the Dayton's 3.6khz peak.

[FredT300B]

The "Sweet 69's". Twelve PE 69 cent buyout Sony 5.25" woofers with a Vifa DX25 tweeter. These cost about $100 to build, and they are worth every penny, but not one penny more. The Sony midwoofers perform no better or worse than you would expect a really cheap boombox speaker to perform, with a significant breakup peak around 5khz, but when you combine twelve in an array, the comb filter effect almost completely eliminates this effect. So the woofer array runs full range with no low pass filter, while the Vifa tweeter is crossed at about 2.2khz using a 3rd order high pass filter, resulting in a reasonably smooth transition. Nobody will ever confuse these with high end speakers, but with a subwoofer to handle the bass these are great party speakers that you would find it hard to blow out, even at very high volume levels.

[FredT300B]

The "Towers of Awesomeness". Each 7' 9" tower incorporates twelve Dayton Audio RS180 midwoofers and nine BG Neo 8 PDR tweeters. Bi amplified using a DEQX processor for preamp, digital crossover, speaker correction and room correction. The midwoofer/tweeter crossover is a 48dB/octave LR at 1.2khz. The subwoofer/midwoofer crossover is a 48dB/octave LR at 100hz.

[jonasz]

+1


i have some old 0-70 degree measurements from when the speaker looked like this:


as they were only baffle-shape prototypes, the XO and EQ was unimportant, but it shows that dispersion is pretty good from top to bottom 

the mic was placed 80cm away from the speaker, aimed between the mid and tweeter. no gating.

hope to resolve the mic issues soon... 

Where can you buy the waveguide and does it fit the monopole 140-15D also?

[zimmer64]

Fostex FX120 and Eminence Alpha 15

[bjarnetv]

Where can you buy the waveguide and does it fit the monopole 140-15D also?

it's made by autotech so you could buy them here:
http://www.diysoundgroup.com/plastic-seos-12/fiberglass-seos/seosraal.html
and probably some other retailer, depending on where you live.

they were designed for the monopole version, so fitting them should be quite easy.
just drill some holes in the mdf mounting plate, and find some longer screws to replace the standard ones on the RAAL front plate.

[jonasz]

it's made by autotech so you could buy them here:
http://www.diysoundgroup.com/plastic-seos-12/fiberglass-seos/seosraal.html
and probably some other retailer, depending on where you live.

they were designed for the monopole version, so fitting them should be quite easy.
just drill some holes in the mdf mounting plate, and find some longer screws to replace the standard ones on the RAAL front plate.

Thanks!
Can you just give a short comparison of the sound of the Raal with and without the wg? Lastly, will it go down to 1200hz as the specs say?

Thanks in advance!

[bjarnetv]

Thanks!
Can you just give a short comparison of the sound of the Raal with and without the wg? Lastly, will it go down to 1200hz as the specs say?

Thanks in advance!

i cross them at 2500hz and probably wouldn't go any lower.
the reason for the low limit of the horn, is that you don't want that limit to be anyway near your XO point if you want them to sound any good.

compared with the stock ribbon, the horn has a very good disperion off axis, and more power below 6k hz.
when i compared them, i found the horns to give a more tactile and punchy sound to the speakers.
good off axis disperion is also a plus, as my livingroom is untreated.

here is a measurement of the RAAL with and without the horn.

[jonasz]

Thank you Bjarnetv!

[Poultrygeist]

openly baffled Nipper