Grinnell or Bust

[Ron_E]

Re: Grinnell or Bust

I saw those little Onkyos and was wondering if they'd be enough for that huge venue and they certainly were. I presently have more amplifiers than I know what to do with so that part of the equation is already solved. Have measurement gear too and always a couple old PCs sitting around that might actually work. UE might very well be my Christmas present to myself (which I always do after Christmas), so be prepared for a barrage of questions probably after New Year's. You might want to preemptively put me on ignore.

Bring them over between blizzards and we'll set them up. :D

Ron

[bkeane1259]

Re: Grinnell or Bust

I saw those little Onkyos and was wondering if they'd be enough for that huge venue and they certainly were. I presently have more amplifiers than I know what to do with so that part of the equation is already solved. Have measurement gear too and always a couple old PCs sitting around that might actually work. UE might very well be my Christmas present to myself (which I always do after Christmas), so be prepared for a barrage of questions probably after New Year's. You might want to preemptively put me on ignore.

[Ron_E]

Re: Grinnell or Bust

Is this the first successful UE project shown at a DIY? I've always wanted to hear a project with the UE implementation and I'm really sold on it. I don't know when I'll have the proper funds for the project but hearing the system and seeing Ron's measurements really confirms that it's indeed a superb product.

I thought I'd seen mention of a system before and did a little digging and found it. DLR had it at DIY NE in 2010. http://techtalk.parts-express.com/sh...08#post1689808



Look into the MME version of UE that will do stereo 4-way on a on P4 XP machine which supports some MB sound hardware or M-Audio's Delta 410 which can be had cheap on E-bay. I was driving the mids and tweeters with $100 Onkyo compact receivers from E-bay at Grinnell. I'm currently running the woofers with a used $80 HK 3480 receiver. UE comes with measurement software built in so you'll need a mic, preamp, and resistive probe that you can make yourself.

Ron

[bkeane1259]

Re: Grinnell or Bust

Is this the first successful UE project shown at a DIY? I've always wanted to hear a project with the UE implementation and I'm really sold on it. I don't know when I'll have the proper funds for the project but hearing the system and seeing Ron's measurements really confirms that it's indeed a superb product.

[Ron_E]

Re: Grinnell or Bust

Your speakers sounded quite good, Ron, and I hope you don't mind if I steal your edge-chamfer scheme for my next project (which will have similar large-diameter front round-overs). I've been retired for 10 years now and I'm fortunate to be able to build speakers without worrying very much about costs. I'm running out of ideas, however, and my overall skills aren't complete, so I may never be able to conceive of and build my last hurrah system (but that won't stop me from trying).
Paul

The Amaroso's were really fine all the way around. Plenty of skill on display with those. You're welcome to use the chamfer idea since I neglected to file for a patent. I figure there's some prior art out there on that one. I look forward to seeing what you come up with.

Thanks for the complement Mark65. I hope they made that long trip worthwhile.

Ron

[Paul K.]

Re: Grinnell or Bust

Your speakers sounded quite good, Ron, and I hope you don't mind if I steal your edge-chamfer scheme for my next project (which will have similar large-diameter front round-overs). I've been retired for 10 years now and I'm fortunate to be able to build speakers without worrying very much about costs. I'm running out of ideas, however, and my overall skills aren't complete, so I may never be able to conceive of and build my last hurrah system (but that won't stop me from trying).
Paul

It is my new reference system and my last hurrah system. I bought the parts before I retired and became one of those fixed income guys. It's not cat food time but Raal's will probably be an extravagance in the future. Look for something smaller and more affordable next year.

Thanks for the compliment. Listening to them has been like having a new music collection.

Ron

[Mark65]

Re: Grinnell or Bust

It is my new reference system and my last hurrah system. I bought the parts before I retired and became one of those fixed income guys. It's not cat food time but Raal's will probably be an extravagance in the future. Look for something smaller and more affordable next year.

Thanks for the compliment. Listening to them has been like having a new music collection.

Ron

As it should be. I'd listen to everything I have, front to back, if I could get those bad boys into my living room for a weekend. Well done, but that really doesn't cover it, so I'll say WELL FREAKING DONE!!!!

AWEsome, totally AWEsome!


Mark

[mjs408]

Re: Grinnell or Bust

Look great as always Ron. Maybe next year Ill be able to come with you to Grinnel. Cant wait to hear them.

[Ron_E]

Re: Grinnell or Bust

That's a really good in-room RTA. The Cherry Pi system is the best I have heard at a DIY. It's definitely a last hurrah type of system. Will this be your new reference, Ron?

It is my new reference system and my last hurrah system. I bought the parts before I retired and became one of those fixed income guys. It's not cat food time but Raal's will probably be an extravagance in the future. Look for something smaller and more affordable next year.

Thanks for the compliment. Listening to them has been like having a new music collection.

Ron

[Ron_E]

Re: Grinnell or Bust

that bottom one is what I heard Saturday. NICE>

I finally got around to making gated measurements. I can't be sure if this is what you heard but it is possible to do if the amplifier gains are set correctly. I'm not using the same amps for my measurements but I had tried to set the levels with the RTA measurements for the Grinnell demo. The gated measurements make it very easy to nail the levels precisely. The 1M measurements are good down to 250Hz with the window I used and there is no smoothing.

The acoustical distance setting is way out there in SE because of the digital delay from the UE program. I saw the same thing making measurements with Behringer's digital crossover and EQ. You have to search for the delayed impulse.

Near Field Woofer Measurement


1M System Measurement


Next up is trying to make UE more stable. It might be because i originally had a M-Audio Delta 410 card and had to switch to a Delta 1010LT card. Even though I uninstalled the 410 drivers there are 2 Delta setups in the Control Panel and UE looks like it thinks it has 2 cards.

Before I forget, I did have a 6db HP filter on the Raal comprised of a single 6.8Mf cap. I thought it wise to put some protection in front of it just in case the computer or amp tried to send some garbage it's way. I made my tweeter measurements for UE by setting the reference probe to include the filter.

:D:D:D
Ron

[bkeane1259]

Re: Grinnell or Bust

That's a really good in-room RTA. The Cherry Pi system is the best I have heard at a DIY. It's definitely a last hurrah type of system. Will this be your new reference, Ron?

[[email protected]]

Re: Grinnell or Bust

that bottom one is what I heard Saturday. NICE>

[Ron_E]

Re: Grinnell or Bust

I'm finally back to working with the Cherry π's. I just took some measurements with TrueRTA of the whole system and the individual drivers.

Vifa Woofers


Neo8-s


Raal 70-10D


System


These are measured on the tweeter axis at a hair over 1M. They're doing road construction in front of our house so there's plenty of noise and room effects down low. It looks like UE is doing what it's supposed to. The high end roll off looks like the mic cal file isn't included. I'll find out when I do gated measurements later this weekend when they're not working on the street.

Ron

[Ron_E]

Re: Grinnell or Bust

From Ebay. http://www.ebay.com/itm/M-AUDIO-DELT...item4acaf067de

Ron

[dcgold2000]

Re: Grinnell or Bust

Thanks Ron