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Speaker Shootout!! - Page 6

post #151 of 1141
Thread Starter 
Quote:
Originally Posted by MKtheater View Post


If you guys tell me what to do I will do it.

If I put one as a center channel and measure the response and then sit in the farthest left and right seats and measure will that be good for an off axis response? I will do it not eq'd of course.
post #152 of 1141
Quote:
Originally Posted by MKtheater View Post

If I put one as a center channel and measure the response and then sit in the farthest left and right seats and measure will that be good for an off axis response? I will do it not eq'd of course.

Of course that's good enough! Just measure that angle. Thx MK
post #153 of 1141
Quote:
Originally Posted by MKtheater View Post

How do I gate the measurement?

Sorry, I know the "what", but not the "how" in this case. I've never taken any serious near field measurements, just rough ones with the default measurement time-windows. I'm sure someone from the DIY / speaker building section could give the details you need.
post #154 of 1141
Thread Starter 
Quote:
Originally Posted by Gooddoc View Post


Of course that's good enough! Just measure that angle. Thx MK

My geometry guys, say I sit 12 feet away and each seat is 6 feet away so with a base of 12 feet and a line drawn down the middle is 12 feet what is the angle of the triangle?
post #155 of 1141
Quote:
Originally Posted by MKtheater View Post

My geometry guys, say I sit 12 feet away and each seat is 6 feet away so with a base of 12 feet and a line drawn down the middle is 12 feet what is the angle of the triangle?

sohcahtoa... that's all i remember ! You got a protractor
post #156 of 1141
Quote:
Originally Posted by MKtheater View Post

How do I gate the measurement?

I was browsing around regarding gated measurements. I thought this post was pretty informative http://www.hometheatershack.com/foru...tml#post178442
post #157 of 1141
Quote:
Originally Posted by MKtheater View Post

My geometry guys, say I sit 12 feet away and each seat is 6 feet away so with a base of 12 feet and a line drawn down the middle is 12 feet what is the angle of the triangle?

I don't quite get the question, but maybe this helps:

http://www.handymath.com/cgi-bin/irregangle8.cgi

Oh, read the earlier post - if I understand it correctly, the angle would be 26.57 degrees off axis to the L and R seats. Try punching in the numbers and see if you get the same (I used side A = 6, side C = 12, angle B = 90, and looked at the value of angle A as the result).
post #158 of 1141
Quote:
Originally Posted by MKtheater View Post

My geometry guys, say I sit 12 feet away and each seat is 6 feet away so with a base of 12 feet and a line drawn down the middle is 12 feet what is the angle of the triangle?

A triangle with one leg 12' and the other leg 6' is 26.6 degrees.
post #159 of 1141
MK,

What are you using for measurement equipment? What type of measurements are you taking? What are you using for test signals?

Determining where the off axis response starts to turn ugly and how it turns ugly will determine the type of acoustic treatments (if any) will be beneficial in your room, as well as ensuring a good direct response at all seats.
post #160 of 1141
Quote:
Originally Posted by MKtheater View Post
If you guys tell me what to do I will do it.
Great - send all the speakers to me at the following address...

Seriously, though, that link provide at HT Shack is a good one. Also, be absolutely sure that the other speakers are well out of the way (out of the room preferably) when you measure, and that when measuring said speakers they are placed in the exact same spot. Again, measure only one at a time. I haven't measured using gated times, so I can't comment on that.

As far as the angle, I don't think anyone is going to twist your arm to get it perfect. As long as you measure using the same angle and method(s) you'll be fine. Just be sure to not move the mic at all when doing it, so you'll probably have to block off an afternoon and do them one right after the other. I hope that helps.
post #161 of 1141
Thread Starter 
Quote:
Originally Posted by Nuance View Post
Great - send all the speakers to me at the following address...

Seriously, though, that link provide at HT Shack is a good one. Also, be absolutely sure that the other speakers are well out of the way (out of the room preferably) when you measure, and that when measuring said speakers they are placed in the exact same spot. Again, measure only one at a time. I haven't measured using gated times, so I can't comment on that.

As far as the angle, I don't think anyone is going to twist your arm to get it perfect. As long as you measure using the same angle and method(s) you'll be fine. Just be sure to not move the mic at all when doing it, so you'll probably have to block off an afternoon and do them one right after the other. I hope that helps.
I want to take a day for it. I now have a calibrated mic from spectrum labs(behringer) and bought the preamp. I basically just clicked on the links from the previous pages and bought them.

The DR's are sounding better and better. So good that I need to test them like the others as a front stage so I bought more and they should be here next week or so. I am thinking about buying T-39 bottoms for 60-200hz as well. I don't think I need them but the midbass will be back on par with the JBL's again.
post #162 of 1141
Wouldn't a horn that only needs to be 60-200hz be alot smaller than the T-39?
Just wondering.

I think I will be following your goals with the DR's because of budget constraints.
post #163 of 1141
Thread Starter 
Quote:
Originally Posted by chrapladm View Post

Wouldn't a horn that only needs to be 60-200hz be alot smaller than the T-39?
Just wondering.

I think I will be following your goals with the DR's because of budget constraints.

I am always interested in bang for buck.
post #164 of 1141
I have always wanted to build the La Scalla clones but the 500hz and up was always expensive. DR's have always been a possibility but I have never seen anyone into HT use them.

Now the DR series and a T39 should have everything I would want but it will be nice to see if YOU like them.

Midbass slam and everything else.
post #165 of 1141
MK you have pm
post #166 of 1141
Just wondering if MK got his delivery and thought this thread deserved a bump.
post #167 of 1141
Thread Starter 
Quote:
Originally Posted by Dbuudo07 View Post

Just wondering if MK got his delivery and thought this thread deserved a bump.

I take delivery this Saturday of 4 DR's and 4 T-39's. The DR's I have now are sealed and the 4 coming are ported. I am curious how different they sound from a different builder. My computer I use for graphs does not have a CD drive so I can not load the instal discs for the Behringer mic and preamp. I am looking for my power cord for my dvd burner to hook up so I can get the new mic up and running. If I can't find it I will take my discs to my good computer and copy them to my flash drive and then load them into my ROM less computer at home. I have 3 mac laptops, a 23 inch touch screen gateway(office), and Iphone, and a Galaxy tab. If there is a way to use the tablet would make things very simple and portable.
post #168 of 1141
Cant wait to see the results of the DR/T39's. Would the T18 not be enough?

Just wondering if the subs would be coming in around 60hz just figured the bass horn could be pretty small.

Did you go with a different builder than ED?
post #169 of 1141
Thread Starter 
eD is not an authorized builder or o would have.
post #170 of 1141
Very nice....

Can't wait to hear your impressions.....

JSS
post #171 of 1141
Picked up a Yamaha rx-v667 (has preouts) for a few hundred bucks yesterday. I'm now ready to go the DR200 route for LCR. I'll use minidsps to run EQ on them
post #172 of 1141
I'm curious all the differences in the DR line. Performance, cost, build difficulty, etc. I have no need for new speakers but would like to hear some. I need to stop reading this thread or I'll have some plans on order.
post #173 of 1141
The only real difference in the dr200, dr250, dr280 is size of the box, a bit bigger woofer and where they cross over at. For our purposes the dr200 is about as big as you want to go or you would start to lose imaging unless you have a huge theater. I believe you have to cross the dr200 over at 120hz, the dr250 goes to 100hz, etc
post #174 of 1141
Thread Starter 
Quote:
Originally Posted by blackoper View Post

The only real difference in the dr200, dr250, dr280 is size of the box, a bit bigger woofer and where they cross over at. For our purposes the dr200 is about as big as you want to go or you would start to lose imaging unless you have a huge theater. I believe you have to cross the dr200 over at 120hz, the dr250 goes to 100hz, etc

The dr-200 goes to 80 hz just fine in my theater. 100hz has crazy output. I am still deciding if I like the sound better than m&k. It sounds bigger and sounds effortless which uses 1/10th the power. The tone is similar to the m&k as well. I want to eq them at 3 feet like the m&k with the proper mic as I feel once it is dialed in properly with all 3 channels it might dominate. The key word is might.
post #175 of 1141
Any idea on when the other speakers are going to get to you?
post #176 of 1141
Thread Starter 
Quote:
Originally Posted by rygher3 View Post

Any idea on when the other speakers are going to get to you?

Maybe 2 weeks.
post #177 of 1141
Thanks MK. As always, I'm looking forward to your findings.
post #178 of 1141
Quote:
Originally Posted by MKtheater View Post

The dr-200 goes to 80 hz just fine in my theater. 100hz has crazy output.

That's good to know. In the pro audio world they are being crossed over at120 most of the time. So then why the T39s if you are happy with their output as don't the F20s cover the rest of the frequency range then?
post #179 of 1141
You should check out the JBL PRX635, MK. Active three-way; should come in under your limit for speakers in this shootout.
post #180 of 1141
Quote:
Originally Posted by chrapladm View Post

I have always wanted to build the La Scalla clones but the 500hz and up was always expensive. DR's have always been a possibility but I have never seen anyone into HT use them.


Yeah, any quality 2" CD tweeter that does well over 10K is costing > $1400/pr alone

How about sticking my BMS 4590p in a La Scalla clone? I will give you a good deal
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