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6 DIY eD A7S-650 kits with FP14K clone - Page 2

post #31 of 249
6/29/12 at 7:39am
MK that graph looks very similar to this one:

MK Graph.jpg 105k .jpg file

Is the difference between the systems just more of a tactile feel, both were flat to mid single digits.

Thanks,

David
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post #32 of 249
6/29/12 at 8:14am
Thread Starter 
Yes, both are similar and you are right, the difference is the low end. The new system is just stronger or feels like it is louder on certain scenes. I use the DTS-10's as reference because they are a known product that measured very well from 12-50 hz. They were the first subs to have this bass wave effect that you did not hear but only felt during several scenes of different movies. It was the reason I kept them. Once I discovered the DCX for myself and boosted the low end(under 20hz) with the sealed system I could replicate that effect but it was still not quite as powerful feeling. This new system needs no boost down low to feel even stronger than the DTS-10's, it is the only way I could explain any differences. They also sound great!
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post #33 of 249
6/29/12 at 9:18am
Quote:
Originally Posted by edoggrc51 View Post

+1!
Road trip Scott???? biggrin.gif

YES!!! But only if we make some detours through BBQ country. I wanna eat enough burgers, spare ribs and pulled pork to gain another 30lbs. biggrin.gif
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post #34 of 249
6/29/12 at 9:33am
Quote:
Originally Posted by desertdome View Post

I wonder how 6000+ miles would feel like in the Viper? biggrin.gif
I can barely take 600 let alone 6000! eek.gifbiggrin.gif
Quote:
Originally Posted by Scott Simonian View Post

YES!!! But only if we make some detours through BBQ country. I wanna eat enough burgers, spare ribs and pulled pork to gain another 30lbs. biggrin.gif
Sounds like a plan to me! lol
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post #35 of 249
6/29/12 at 9:44am
Thread Starter 
Quote:
Originally Posted by edoggrc51 View Post

I can barely take 600 let alone 6000! eek.gifbiggrin.gif
Sounds like a plan to me! lol

My room sounds great but a very long trip to hear it is over the top! I would love the company.
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post #36 of 249
6/29/12 at 9:57am
Awesome stuff MK! Great response!

Curious, what demo scenes can you tell the most difference?

Is that your response without any EQ at all?
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post #37 of 249
6/29/12 at 10:26am
Thread Starter 
With EQ, without EQ I had 2 peaks, one small one at 22 hz and another big one at 52 hz. I could have just used 2 filters and cut them down but I let REW select the filters which uses 9 filters. I wonder if I should say max boost 10 dBs rather than 6 dBs and maybe it would use less filters.

I use Transformers 2 and Tron for the scenes I am used to.
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post #38 of 249
6/29/12 at 10:57am
Got Battle:LA, James? If so, gotta hit up the last part that starts underground, looking at the ship before it rises. As soon as they are found and start getting shot at...whoa deeeeeep bass!
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post #39 of 249
6/29/12 at 11:06am
Thread Starter 
Yes I have it, you mean the scene when they are looking thru the hole at the ship while they are in the sewer? Will check it out. I have not scene that movie in a while. I like the movie.
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post #40 of 249
6/29/12 at 11:20am
Yes, exactly that part. The deep bass in each alien shot is stupendous! biggrin.gif
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post #41 of 249
6/29/12 at 11:50am
Thread Starter 
Here is a nearfield measurement and then a raw LP measurement with no EQ. The flat graph was with 9 filters. Sorry the levels were different because they were done on different times, I just took the new LP response.

nearfield.jpg

uneqd.jpg
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post #42 of 249
6/29/12 at 11:52am
Wow. That really starts to drop above 50hz at the listening position. No mains on, I'm assuming?
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post #43 of 249
6/29/12 at 12:00pm
Thread Starter 
Quote:
Originally Posted by Scott Simonian View Post

Wow. That really starts to drop above 50hz at the listening position. No mains on, I'm assuming?

80hz crossover and I forgot that the LFE was up 10 dBs from the mains. The other graph was with an 80hz cross but I matched the mains.
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post #44 of 249
6/29/12 at 4:03pm
i wonder if the 'extra strength' in the low end that you are hearing is the underhung voice coil not leaving the gap.

underhung tend to have a flatter bl curve than overhung designs. because the coil is always in the gap, you get a near constant force at any excursion.

this would keep their motor strength up at least until they leave the gap in which case they would lose force fairly quickly.

i'm still curious about those specs though. :-)

glad they worked out mk!

are you allowed to say what one of those cabs goes for? i suspect a few folks might like to know.

i just put two and two together. that peak at 52 is almost 10db. that's not the driver is it?
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post #45 of 249
6/29/12 at 4:13pm
Quote:
Originally Posted by LTD02 View Post

i just put two and two together. that peak at 52 is almost 10db. that's not the driver is it?
I don't see any peak in the nearfield measurement.
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post #46 of 249
6/29/12 at 4:27pm
"I don't see any peak in the nearfield measurement."

he mentioned that one has nine filters and uses smoothing, so its not really a traditional nearfield response.
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post #47 of 249
6/29/12 at 5:34pm
24 coils of 2 ohm? How did you wire it, bridged into 12ohm(6ohm x2)?
How close to clipping the FP14K are you getting now?
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post #48 of 249
6/29/12 at 5:47pm
Thread Starter 
No EQ on the nearfield or last LP. the 9 filters was getting it flat at LP. Those peaks are from my LP, they are gone if I move the mic back 3 feet. The whole is system is one 6 ohm load to the amp. The highest I hit on the FP14K was -4 dBs on the meter.
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post #49 of 249
6/29/12 at 5:50pm
Thread Starter 
Oh yeah, I got the drivers when I sale and each sub cost about $500 to build without shipping.
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post #50 of 249
6/29/12 at 7:09pm
Thanks for sharing MK, nice response.

Just for grins, what's the pistonic diameter of those drives, sans surround? I mean those things are quite modest in real cone diameter,... right? They just appear so small.

Have you figured the relative displacement to your other rigs? Ever perform any time domain measurements of your room?

----

Awesome job, all the best
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post #51 of 249
6/29/12 at 7:59pm
so roughly $1k per cab before shipping?
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post #52 of 249
6/29/12 at 8:19pm
i honestly can't figure out what is what with e.d.

333
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post #53 of 249
6/29/12 at 8:29pm
Thread Starter 
Sorry, I must write bad but each sub, dual 13av2's and enclosure was about $500 each and $600 shipped each. This price included two drivers and precut wood to put together, not $1000/sub.

All the drivers are the same except ohms, eD are clearing out the extra drivers cheap and I jumped on it. I only bought 12 because that got me similar displacement as I was used to. I measured the driver from surround to surround and it is 12 inches. One of the coolest drivers I has owned as build quality was concerned were my TC sounds built SVS drivers which were 12's. These make those seem cheap in comparison. Again, these just work and 4 of them could have done a great job in my room but that is not me!
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post #54 of 249
6/29/12 at 8:49pm
Geez MK, you keep going from one overkill setup to another overkill setup eek.gif. What do you do with your other sets of subs? Since you have so many of those things, have you considered stacking them from floor to ceiling as a pair of line array's? I know thats easy to say when they weigh so much, but you're one of the few people that could easily compare the results of such a setup.
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post #55 of 249
6/29/12 at 9:14pm
"dual 13av2's and enclosure was about $500 each"

wow. that is some really good pricing mk. i was thinking $1k per cab was reasonable, $500 seems like a great price.

i'm sure that i'm not the only person confused by the pricing, or the specs for that matter, of the e.d. av subs though.

maybe one of the e.d. guys could weigh in with the coil and gap height, so we could all know what we are looking at there. the $185 vs $350 is also very confusing.
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post #56 of 249
6/29/12 at 9:27pm
Quote:
Originally Posted by MKtheater View Post

Sorry, I must write bad but each sub, dual 13av2's and enclosure was about $500 each and $600 shipped each. This price included two drivers and precut wood to put together, not $1000/sub.
All the drivers are the same except ohms, eD are clearing out the extra drivers cheap and I jumped on it. I only bought 12 because that got me similar displacement as I was used to. I measured the driver from surround to surround and it is 12 inches. One of the coolest drivers I has owned as build quality was concerned were my TC sounds built SVS drivers which were 12's. These make those seem cheap in comparison. Again, these just work and 4 of them could have done a great job in my room but that is not me!

Wish they would firesale their 18" cabinets.. $350 + $60 shipping isnt too hot, but i guess it is finished.
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post #57 of 249
6/29/12 at 9:27pm
Quote:
Originally Posted by MKtheater View Post

Sorry, I must write bad but each sub, dual 13av2's and enclosure was about $500 each and $600 shipped each. This price included two drivers and precut wood to put together, not $1000/sub.
All the drivers are the same except ohms, eD are clearing out the extra drivers cheap and I jumped on it. I only bought 12 because that got me similar displacement as I was used to. I measured the driver from surround to surround and it is 12 inches. One of the coolest drivers I has owned as build quality was concerned were my TC sounds built SVS drivers which were 12's. These make those seem cheap in comparison. Again, these just work and 4 of them could have done a great job in my room but that is not me!

Wish they would firesale their 18" cabinets.. $350 + $60 shipping isnt too hot, but i guess it is finished.
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post #58 of 249
6/30/12 at 4:31am
mk, you paid $500 for the sub plus shipping $100? 600 each?...tho without the amp.

Do you ever play any scenes at reference without any mains or surrounds on? Try it and see how it sounds...tho you got alot of sub there with all those drivers.

trying to sell mine with the amp @ 1250 for 2.
Edited by mrcoop - 6/30/12 at 4:40am
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post #59 of 249
6/30/12 at 5:04am
Awesome DIY MK! May I ask why you chose not to design the enclosures having the drivers in a dual opposed design? Please forgive my ignorance as I am still learning about sub design; I thought dual opposed was the preferred arrangement?
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post #60 of 249
6/30/12 at 8:06am
Thread Starter 
My favorite design is Bosso's up and down firing dual opposed. I was going to buy PVC and have custom end caps made so I could stack them but eD gave me a deal since I am a repeat customer and I bought in bulk. It was cheaper to go this route and they serve double duty as stands! They sound great and dig really deep. Besides these cabinets are heavy duty and each sub weighs 200 pounds! They are very sturdy!
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