Ripole build - dual 18" Hawthorne Audio drivers

jtwrace · « **Reply #100 on:** 20 Sep 2011, 01:02 pm »

Quote from: Bob in St. Louis on 20 Sep 2011, 01:00 pm

I can't do the fancy graph stuff.

Why? You have MS Excel right?

Bob in St. Louis · « **Reply #101 on:** 20 Sep 2011, 01:14 pm »

Not sure, I've never used it.

I can look tonight when I get home. But what will excel do for me?
You talking about manually plotting tones?

Bob

jtwrace · « **Reply #102 on:** 20 Sep 2011, 01:17 pm »

Quote from: Bob in St. Louis on 20 Sep 2011, 01:14 pm

Not sure, I've never used it.
I can look tonight when I get home. But what will excel do for me?
You talking about manually plotting tones?

Bob

Yes, set your "X" axis to freq and your "Y" to dB. Plot them and you'll get a nice FR graph.

I would imagine that you're using a test tone Cd like the one that Ethan has posted on his site?

EDIT: Set your "Y" scaling for 5dB.

Bob in St. Louis · « **Reply #103 on:** 20 Sep 2011, 02:17 pm »

Ok, gotcha. That's almost like the old fashion way.

Regarding the tones, I've got a bunch of old "Bass Mechanik[sp]" test tones.

Bob

jtwrace · « **Reply #104 on:** 20 Sep 2011, 02:21 pm »

Quote from: Bob in St. Louis on 20 Sep 2011, 02:17 pm

Ok, gotcha. That's almost like the old fashion way.

Regarding the tones, I've got a bunch of old "Bass Mechanik[sp]" test tones.

Bob

Try this: http://www.realtraps.com/test-cd.htm

Noooo. The old fashion way would be with some graph paper and a ruler.

Doing it with MS Excel takes literally 30 seconds.

And I'd love to hear these too!

Blackmore · « **Reply #105 on:** 20 Sep 2011, 02:29 pm »

Hey Bob-o,
Download REW and you can borrow my USB mic preamp, mic and cables. Then you can do all those fancy graphs. I don't need this stuff right now, so you can keep it for a couple of months.

Heck, I'll even deliver it if that helps.

Bob in St. Louis · « **Reply #106 on:** 20 Sep 2011, 04:26 pm »

Jtwrace, Thanks man. I'd take you up on that, but it seems Mark has trumped your offer.

Mark, that would certainly make life easy. Wifey has this weekend planned for me, so I wouldn't be able to make it out to pick up the equipment for a couple weeks. I appreciate the offer for delivery, but that's a long haul just to drop off loaner stuff, unless you're in the area anyway.

Thanks guys!

Bob

Blackmore · « **Reply #107 on:** 20 Sep 2011, 04:50 pm »

I work in Washington so I could drop it by the house or your work. I don't mind doing it at all. Let me know if that sounds good.

jtwrace · « **Reply #108 on:** 20 Sep 2011, 04:52 pm »

Quote from: Bob in St. Louis on 20 Sep 2011, 04:26 pm

Jtwrace, Thanks man. I'd take you up on that, but it seems Mark has trumped your offer.

That's the better way to do it....it's just a lot more in depth and takes a bit of time. Hopefully he'll lend a hand to get you going.

Good Luck and post the results.

Bob in St. Louis · « **Reply #109 on:** 20 Sep 2011, 05:08 pm »

jtw, I assume I'd be storing the images on a server like Photobucket like where I store my photos?

Mark, I work til 5:00 during the week, and get home at 6:00.
Of course, whatever is best for you I'll be as accommodating as I can be.
Thank you.

Bob

Blackmore · « **Reply #110 on:** 20 Sep 2011, 05:18 pm »

PM sent

New Praetorian · « **Reply #111 on:** 20 Sep 2011, 11:50 pm »

Quote from: JohnR on 6 Sep 2011, 02:43 pm

Geez.

I hope you're getting something for this. (Apart from aggravation, I mean)

Bob is a real good guy and is the reason my system looks and sounds as good as it does. When I get this beast home, it will go into the system with the PSI Trios and PSI center channel that he has already made for me. Without his help, my system would not be as nice as it is now. Thanks Bob!

Jeff

gooberdude · « **Reply #112 on:** 20 Sep 2011, 11:56 pm »

Jeff, do you live in a football stadium or what??

That's a lot of Sterling goodness! Having that many Radian CD's in the room must be fun, i still dig mine at any volume.

I think you'll enjoy the ripole.

New Praetorian · « **Reply #113 on:** 21 Sep 2011, 12:50 am »

Quote from: gooberdude on 20 Sep 2011, 11:56 pm

Jeff, do you live in a football stadium or what??

That's a lot of Sterling goodness! Having that many Radian CD's in the room must be fun, i still dig mine at any volume.

I think you'll enjoy the ripole.

Thanks

I can't wait to hear the Ripole

Unfortunately I only have the Silver Iris drivers in Trios. I do have upgraded crossovers with Obligato caps that Darrel made for me. I am very satisfied with them. I can't wait to hear Bob's Sterlings. I have not had a chance to hear a pair yet.

Jeff

gooberdude · « **Reply #114 on:** 21 Sep 2011, 01:07 am »

Your room must rock regardless! That's a lot of big woofers in multichannel.

I have most of the parts of a killer home theatre for down the road, all hawthorne 15's with my PSI's as rear channels.

Once the ripole is dialed in, you'll be louder than a KISS concert

Will you use an amp like the Crown K2? The ripole seemed more than happy w/that amp.

If you are heading to town at some point, feel free to take a detour downtown st louis to hear my Sterlings...they are difft than Bob's. Less earth-quake-ish, but fun nontheless.

matt

JohnR · « **Reply #115 on:** 21 Sep 2011, 05:46 pm »

Mark - way to go

Bob - whatever you have time for mate. And if you're interested. I'm curious to know how it performs in-room. 'Course, I could make one, but... since you did...

zobsky · « **Reply #116 on:** 21 Sep 2011, 06:25 pm »

Congrats !! While I'm not sure ripoles are my cup of tea, I'm really glad you got the issues sorted out.

New Praetorian · « **Reply #117 on:** 22 Sep 2011, 02:40 am »

Quote from: gooberdude on 21 Sep 2011, 01:07 am

Your room must rock regardless! That's a lot of big woofers in multichannel.

I have most of the parts of a killer home theatre for down the road, all hawthorne 15's with my PSI's as rear channels.

Once the ripole is dialed in, you'll be louder than a KISS concert

Will you use an amp like the Crown K2? The ripole seemed more than happy w/that amp.

If you are heading to town at some point, feel free to take a detour downtown st louis to hear my Sterlings...they are difft than Bob's. Less earth-quake-ish, but fun nontheless.

matt

Thanks Matt. If I find myself out that way, I might have to take you up on that offer.

Jeff

Bob in St. Louis · « **Reply #118 on:** 24 Sep 2011, 12:59 am »

DISCLAIMER:
I've been using REW, a Behringer mic, and an M-AUDIO Fast Track Pro for about 30 minutes now.

Using that equipment I came up with this graph. Look close, you'll see six sweeps and one average.
The volume is *way* too low, but I think that's a software thing, and not an actual "real life" volume thing.
The mic was placed at the listening position.

The amazing thing to me is the difference in dB between the graphs. Especially at 32dB, there's an 11dB difference.
I changed absolutely nothing. Notice the time stamps.

But overall, this looks pretty good to a "graph noob" such as myself.

{this is my first tip-toe into measuring and should probably start another thread}

nicksgem10s · « **Reply #119 on:** 24 Sep 2011, 01:25 am »

Hi Bob and Matt (since you heard them also),

Very cool project you have going on.

How would you say the bass differs from the Augies?

By the way the Augies are some of my favorite bass drivers on the market and if I go back to an open baffle speaker system I am getting 4 next time

-Nick