Thanks. The finish is sprayed flat black until I learn how to piano finish 
I lowered the XO frequency and the soundstage was still pulled down. Quite confused until I remembered that the XO was originally for Eminence ALpha so the time alignment was too much. The Jaycar woofers have less depth.
After the time alignment circuit W-M was modified from 70mm to 40mm, now the soundstage is at the correct height so I'm quite happy now. Next step is measurements to get the midrange dipole eq right.
I lowered the XO frequency and the soundstage was still pulled down. Quite confused until I remembered that the XO was originally for Eminence ALpha so the time alignment was too much. The Jaycar woofers have less depth.
After the time alignment circuit W-M was modified from 70mm to 40mm, now the soundstage is at the correct height so I'm quite happy now. Next step is measurements to get the midrange dipole eq right.
Greetings Gainphile, I gotta say I admire your tenacity.Ive been quietly watching your various takes on OB since you did that number with "found" speakers and its been very entertaining.How does the bass compare on the s8 compared to the s7 as I'm running alpha 15's with visaton b200 and I really like what the alphas do. I'll have to try them in a h-frame when I get the energy to biamp them.So little time at the moment with 18mth twin boys and their 4.5 yr sister leading the mayhem Anyway I'm enjoying your journey so thanks for sharing.
ttan98, how did you end up with the econowaves in the end.Did you get them to sound good?That thread is titanic now, you have to leave a trail of bread crumbs when ever you enter it with the fear of getting lost in the forrest.
peace and goodwill fergs
Anyway I'm enjoying your journey so thanks for sharing.ttan98, how did you end up with the econowaves in the end.Did you get them to sound good?That thread is titanic now, you have to leave a trail of bread crumbs when ever you enter it with the fear of getting lost in the forrest.
peace and goodwill fergs
fergs1 said:
ttan98, how did you end up with the econowaves in the end.Did you get them to sound good?That thread is titanic now, you have to leave a trail of bread crumbs when ever you enter it with the fear of getting lost in the forrest.
peace and goodwill fergs
Enjoy your children while they are young, they are only young once.
Econowaves combo sounds good. There is another combo which measures and sounds better. Let me know if you are interested. BTW the price is reasonable, Comp. driver(top quality and sounds very dynamic and smooth) US$135-50 each and horn US$28 each.
cheers.
fergs1 said:
The compression driver is DE250 from B&C get it from PE, and horn is RCF H100 from Loudspeaker Plus, get a friend from the States to buy them on your behalf and send them to you cheaper that way. Total price about US$400 incl postage
A little equalization is reqd between De250 and horn, if you are pedantic/ a perfectionist otherwise no need.
The sound is very open and throw large soundstage, without the high price, an undiscovered gem.
dzzmiller said:
Yeah, it's stereo. They serve as pedestals for the other baffles, and are part of a 4-way tri-amplified active system. The drivers are Elemental Designs 2 ohm drivers wired in series. I had originally intended to wire them series/parallel, but the QSC PA amp driving them is so sensitive (compared to the other amps) that I didn't have to go that route.
fergs1 said:Greetings Gainphile, I gotta say I admire your tenacity.Ive been quietly watching your various takes on OB since you did that number with "found" speakers and its been very entertaining.How does the bass compare on the s8 compared to the s7 as I'm running alpha 15's with visaton b200 and I really like what the alphas do. I'll have to try them in a h-frame when I get the energy to biamp them.So little time at the moment with 18mth twin boys and their 4.5 yr sister leading the mayhem
Thank you
. I have forgotten how long it has been since I found those hard rubbish speakers, which I still have for historical reasons I like the midrange smoothness of S7 much better. But this maybe because I'm too lazy to drag the speakers outside for measurement and tune the XO. But low-end integration is better. I guess separating the main panel and woofer had some detrimental effects on polar response in hindsight.
The bass of eminence alpha is better, no doubt. The jaycar bottoms quite early. But I have not activated the last pair due to lack of amps. I have sold all my alphas as any future projects would be about thinner baffle width. Maybe an array of 8 5" woofer or something
I pulled out my fingers last night so here's some update:
I attached small side panels to provide bracing to the baffle. Without it the speakers sways on loud bass passage.
I also took out my measurement tools. As expected the large baffle width relative to the midrange dragged the dipole peak lower, which in effect put peak and dips below crossover XO. This, unfortunately is a design constraint.
The dipole peak at around 500Hz will be easy to equalize. Not ideal are the peak and dips at 880Hz, 1.2kHz, 1.8kHz this is something I have to live with unless there is a magical way to shrink the baffle width to around 19cm as in S7.
This irregularities manifest itself in female vocals. I imagine replacing the 5" P13WH with larger driver such as 8" W22EX may make better situation. But I'm not convinced. Perhaps that's why SL did not provide measurements for Orion? I would also be not sure of the accuracy by using drivers installed on a wide baffle (B200+Alphas, etc.) because unfortunately the dipole peak coloration can be mistaken for resolution/openness by the ears.
This leads me to believe that the most realistic sounding OB would be something thin like S7, but with an array of smaller woofers to get the bass. I am no longer convinced that separating main and bass panel is good for polar response (but I may still investigate beethoven-style approach). The small woofers needs huge XMAX and Low FS like those used in Pluto (Seas 5") and unfortunately they are very expensive and we may need 4 of them per channel.
Very interesting to note that ealier prototype from SL tries to narrow down the midrange section as well as in "L07 Dipole"
http://www.linkwitzlab.com/design_of_loudspeakers.htm
not sure at what stage he does not think this is important anymore.
I attached small side panels to provide bracing to the baffle. Without it the speakers sways on loud bass passage.
I also took out my measurement tools. As expected the large baffle width relative to the midrange dragged the dipole peak lower, which in effect put peak and dips below crossover XO. This, unfortunately is a design constraint.
The dipole peak at around 500Hz will be easy to equalize. Not ideal are the peak and dips at 880Hz, 1.2kHz, 1.8kHz this is something I have to live with unless there is a magical way to shrink the baffle width to around 19cm as in S7.
This irregularities manifest itself in female vocals. I imagine replacing the 5" P13WH with larger driver such as 8" W22EX may make better situation. But I'm not convinced. Perhaps that's why SL did not provide measurements for Orion? I would also be not sure of the accuracy by using drivers installed on a wide baffle (B200+Alphas, etc.) because unfortunately the dipole peak coloration can be mistaken for resolution/openness by the ears.
This leads me to believe that the most realistic sounding OB would be something thin like S7, but with an array of smaller woofers to get the bass. I am no longer convinced that separating main and bass panel is good for polar response (but I may still investigate beethoven-style approach). The small woofers needs huge XMAX and Low FS like those used in Pluto (Seas 5") and unfortunately they are very expensive and we may need 4 of them per channel.
Very interesting to note that ealier prototype from SL tries to narrow down the midrange section as well as in "L07 Dipole"
http://www.linkwitzlab.com/design_of_loudspeakers.htm
not sure at what stage he does not think this is important anymore.
Hi,
I thought of sharing my implementation OB using GR drivers M130 in MTM and DE10 mounted on ME10 horn.The twin woofer is mounted on a U-frame. The frame in which they are mounted are for testing and will be mounted on a new frame, still in construction. I use DCX2496 hence equalization on all drivers are not that difficult.
Enclosed is a picture taken together with another speaker in BR cabinet.
I thought of sharing my implementation OB using GR drivers M130 in MTM and DE10 mounted on ME10 horn.The twin woofer is mounted on a U-frame. The frame in which they are mounted are for testing and will be mounted on a new frame, still in construction. I use DCX2496 hence equalization on all drivers are not that difficult.
Enclosed is a picture taken together with another speaker in BR cabinet.
Attachments
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.