SEOS Tempest 12 build with Fusion 8 Alchemy MTM and Fusion 8 Alchemy rears - AVS Forum
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post #1 of 32 Old 11-06-2013, 09:54 AM - Thread Starter
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After having owned a B&W speaker setup of 604S3, LCR600S3 and 602S2, I have finally taken the next step into the DIY world.

I have previously built a couple of Aurasound NS-18 subwoofer for my HT. http://www.avsforum.com/t/1349527/building-dual-aurasound-ns18-sealed
The sound from these are just incredible and they are still going strong, even with a single EPX4000 on each subwoofers...
The dynamics improved clearly when going from 1 to 2 EPX4000 so they need a bit of power in reserve.

Anyway, I have been looking for a way to upgrade my mains and the rest of my surround speakers.

I wasnt quite satisfied with the tweeter and the dynamics of the 604S3, and I almost went for a pair of B&W CM9.

The Klipsch speakers, RF-7,RF-83, RF-63 has played well in my ears, but i have noticed a kind of distortion from the tweeters/horn they are using.
That has been my reason to not take the Klipsch road.

I have been following the SEOS build threads for a long time now and I have choosen to build a pair of Tempest 12, a Fusion 8 Alchemy MTM and a pair of Fusion 8 Alchemy for rears.


The Kits have been ordered from DIYSoundgroup in the beginning of September.
After some delay with JetCarrier i have finnaly got both packages.

The DNA compression driver is a beast! biggrin.gif

I just have to order some MDF and get started building right away.

The Tempests will not be finished until Erich sends me the two SEOS 12 Waveguides which unfortunately were missing in the shipments.
Just hoping they will be sent soon as I have about 3 weeks of transport time to my place in Norway.
Its Xmas holiday soon... wink.gif


I have already tested the Eminence Delta PRO 12a and the compression drivers.

The Delta PRO's is mounted in a sealed box (wich I used in a car before) and the compression drivers are used without the waveguides.
MiniDSP is used as a crossower.

Even now they perform very well and I have got a feeling of the potential of the finished product.


I have been following this DIY community for a while now and I have the full respect for the knowledge and the effort that is beeing put into these threads.

Build threads "seems" rolleyes.gif to be wanted here so I thought I might contribute with my projects.

Updates will follow....
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post #2 of 32 Old 11-06-2013, 10:48 AM
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Cool! Looking forward to this as I am going to be building some tempests as well.
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post #3 of 32 Old 11-06-2013, 07:27 PM
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nice! I'm on the cusp of ordering a trio of Fusion 12's for my front stage. Following this with great interest.
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post #4 of 32 Old 11-18-2013, 01:12 PM - Thread Starter
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MDF sheets has been ordered and delivered in record time. smile.gif

Paint has arrived as well and I am going to try Warnex speaker Paint: http://www.thomann.de/gb/warnex_strukturlack_1kg.htm


Sadly, the last shipment that arrived from DIYSoungroup did not contain the 2 Seos12 Waveguides.

I have sent several emails and messages, but I have not got any feedback on this issue yet.
Even if the issue were reported 3 weeks ago. frown.gif

I was hoping to see this issue solved and get those waveguides before xmas, but with such little feedback I really doubt it...
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post #5 of 32 Old 11-18-2013, 02:06 PM
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I just got your PM. I get a lot of them and it's hard to keep up so I sent you a different email address that should help.

About 1.5 months ago one of my friends died of leukemia and things were very hectic here for about 1.5 weeks. It was pretty tough for his family, which I was close to as well. For about a week I was rushing to get some orders packaged at night when there was a little extra time. I probably shouldn't have packaged anything because I was worried that something might get missed. I explained the situation to anyone that had to wait a little while longer than usual.

But I think yours needed to be shipped quickly, so I obviously rushed and forgot your waveguides.....which is pretty hard to do. So I guess my mind was in a different place that night when packaging up the kits. Sorry about that. redface.gif
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post #6 of 32 Old 11-18-2013, 02:38 PM - Thread Starter
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Quote:
Originally Posted by Erich H View Post

I just got your PM. I get a lot of them and it's hard to keep up so I sent you a different email address that should help.

About 1.5 months ago one of my friends died of leukemia and things were very hectic here for about 1.5 weeks. It was pretty tough for his family, which I was close to as well. For about a week I was rushing to get some orders packaged at night when there was a little extra time. I probably shouldn't have packaged anything because I was worried that something might get missed. I explained the situation to anyone that had to wait a little while longer than usual.

But I think yours needed to be shipped quickly, so I obviously rushed and forgot your waveguides.....which is pretty hard to do. So I guess my mind was in a different place that night when packaging up the kits. Sorry about that. redface.gif

Thank you and I am sorry for your loss.

Today, it is actually 11 years that I lost one of my best friends.
Such things is really tough...
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post #7 of 32 Old 12-09-2013, 03:00 PM - Thread Starter
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I have now received the Waveguides and the build is moving forward.
Big thanks to Erich for taking the time to ship the missing parts. smile.gif


The panels are all ready and I have started the assembly of the speaker boxes.
8 out of 10 Crossover has been put together.

I have also tested the speaker paint to find the right painting tools to get the proper structure/finish/surface that I want.

Pictures are coming soon. biggrin.gif
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post #8 of 32 Old 12-09-2013, 04:04 PM
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I am just finishing the alpha minions for rears , and then thinking of doing the lcr like you with tempest and alchemy. Give a good detailed review , particularly on how the center blends with the tempest . smile.gif
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post #9 of 32 Old 12-09-2013, 06:01 PM
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Quote:
Originally Posted by chalugadp View Post

I am just finishing the alpha minions for rears , and then thinking of doing the lcr like you with tempest and alchemy. Give a good detailed review , particularly on how the center blends with the tempest . smile.gif

Without pictures to prove it I don't believe you! biggrin.gif

My Gear:

JTR Noesis 228HT (LCR)
Axiom Audio QS8 surrounds
Sherbourn PA 7-350
Pioneer VSX-21TXH
JVC RS45
Falcon Screens FVHD105
Dual PSA XS30's (gone but not forgotten)
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post #10 of 32 Old 12-09-2013, 09:24 PM
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Check out.my updated build thread biggrin.gif
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post #11 of 32 Old 12-14-2013, 12:38 PM - Thread Starter
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Status is now that all boxes are glued and are ready to be sanded and painted.
All crossovers are made and tested OK.

I promised some pictures and here they are, enjoy!


















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post #12 of 32 Old 12-14-2013, 02:24 PM
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Looks good
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post #13 of 32 Old 12-14-2013, 02:54 PM
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Not bad! I noticed that you made the Fusion-8 and the MTM with double baffles. The original design is with single baffles. I'm sure they will be okay, but I wonder if that inner layer should have a chamfer due to the smaller 8" woofers. It's not needed on the 12", so maybe it's no big deal on the 8" either.
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post #14 of 32 Old 12-15-2013, 12:53 PM - Thread Starter
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Got the cabs sanded today and a layer of paint. biggrin.gif

The paint is not perfect, but this is just the first of 3 layers and the last one is going to be with a structure roller.







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post #15 of 32 Old 12-15-2013, 02:00 PM
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Sweet!

Chris

"It hurts to admit when you make mistakes - but when they are big enough, the pain only lasts a second."
--Despair, Inc. "Regret"

My AviaTrix TM Build
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post #16 of 32 Old 12-15-2013, 02:03 PM
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Great quality work ! I personally don't like the look of duratex but your build is coming along nicely smile.gif
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post #17 of 32 Old 12-15-2013, 07:22 PM
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Nice job. Maybe I should build Fusion 8s as well to match my Tempest and Alchemy.

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post #18 of 32 Old 12-15-2013, 07:29 PM
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Nice job. Maybe I should build Fusion 8s as well to match my Tempest and Alchemy.

I just ordered the alchemy tonight . Then the tempest in the spring. Was going to wait but missed having a center channel
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post #19 of 32 Old 12-15-2013, 11:17 PM - Thread Starter
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Originally Posted by chalugadp View Post

I just ordered the alchemy tonight . Then the tempest in the spring. Was going to wait but missed having a center channel

That sounds great! biggrin.gif

There are many that claims that the Tempest's don't need a center channel speaker due to its wide soundstage.

To me, i dont feel its proper surround without the center.
I did not want to use a single Tempest 12 as center because of placement and space.

So my choice fell on the Alchemy 8 MTM and I do hope I have done the right thing.
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post #20 of 32 Old 12-15-2013, 11:21 PM
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Quote:
Originally Posted by Strike Ace View Post

Quote:
Originally Posted by chalugadp View Post

I just ordered the alchemy tonight . Then the tempest in the spring. Was going to wait but missed having a center channel

That sounds great! biggrin.gif

There are many that claims that the Tempest's don't need a center channel speaker due to its wide soundstage.

To me, i dont feel its proper surround without the center.
I did not want to use a single Tempest 12 as center because of placement and space.

So my choice fell on the Alchemy 8 MTM and I do hope I have done the right thing.
I feel the same about a center. I also like to bump up/down the center a couple of dbs depending on what I am watching especially for tv.
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post #21 of 32 Old 12-16-2013, 01:20 PM
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I'm so jealous of your build! That is going to be one sweet setup!
How much $$$ all said and done minus finish if you don't mind my asking?
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post #22 of 32 Old 12-16-2013, 02:00 PM - Thread Starter
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I'm so jealous of your build! That is going to be one sweet setup!
How much $$$ all said and done minus finish if you don't mind my asking?


Thanks smile.gif

I live in Norway and have to pay for oversea transport including taxes on goods and shipping fees.
The price is higher than you have to pay.

I think DIYSoundgroup operates with free shipping within US in most products. (if not all)

You can find the prices here:
http://www.diysoundgroup.com/waveguide-speaker-kits.html
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post #23 of 32 Old 12-16-2013, 02:49 PM
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I love this pic!

Beautiful work...
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post #24 of 32 Old 12-16-2013, 02:55 PM
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Yeah when I get everything done I'm going to take a pic like that. Its so tough to be patient when you get that close
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post #25 of 32 Old 12-18-2013, 12:50 PM - Thread Starter
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The last layer of paint is in place and it seems like I can get some more work done this weekend. smile.gif
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post #26 of 32 Old 12-18-2013, 02:01 PM
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Nice looking build...I bet it will sound great. Love the workspace!

He who does not punish evil commands it to be done.  Leonardo DaVinci

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post #27 of 32 Old 12-26-2013, 08:56 AM - Thread Starter
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I have now finished the 5 speaker build and also got stands for the Tempest's done.
My 2 Aurasound 18" subs has got the same paint as the Fusion speakers.

Did a Audussey XT32 room calibration, and all fusion speaker crossover were suggested to 40Hz.
As I already have broken in the Tempest woofers, I did leave the settings to 40Hz so the center and surrounds could get some woofer movement and break in faster.

OK, so the first impressions after Audyssey is that they are flat (as expected) and a bit bright on top (or lean in bottom) to my taste.
I did fix this with a MiniDSP and tilted the response a couple of dBs to the warm side.

The Dynamics are great and the woofer is really quick and dry.
Seos 12 with the DNA360 is very clean, smooth with quality sound material, but can get a bit coarse/edgy with not so good sound material.
The Tempest midrange is not better than the B&W CM9 in my ears, but hey, a pair of CM9 costs 20% more than I paid for getting all 5 speakers done. wink.gif

The center and surround blends in nicely, and the only thing I can notice is that they are bit tad brighter than the Tempests.
This is probably be that i did a manual EQ on the Tempests after Audyssey to make them a bit warmer.
If not, I am not shure that i could hear any difference other that the Tempest waveguide and compression driver is more smoother.

2 channel music sounds better than ever.
The music is "fun" and "engaging" and makes you want to listen to even more music.

For movies it was a bigger step forward in quality.
The "airness" and "holographic" in combination with the clear sound and dynamics of the speakers gives a quite good experience.

In general, I am very happy that I did this build and I can recommend this speaker setup any day. biggrin.gif


Here are some more pictures.







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post #28 of 32 Old 12-26-2013, 09:08 AM
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you holding those up with foam on the stands or is that a brick? i honestly cant tell

those look really sharp, the matte EOS-8 horn looks great in the fusion 8s when finished all black.
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post #29 of 32 Old 12-26-2013, 09:35 AM - Thread Starter
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you holding those up with foam on the stands or is that a brick? i honestly cant tell

those look really sharp, the matte EOS-8 horn looks great in the fusion 8s when finished all black.

The Tempests are beeing hold up by bricks that are painted.
The color is darker than the other bricks because I wanted to do a test and then choose the best color to re-paint all bricks.

The stands for the Alchemy 8 surrounds is cardboard tubing with applied structure and Paint.
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post #30 of 32 Old 12-26-2013, 12:13 PM
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Great finished speakers ! The tempest at 75-85db may not be better then b&w but at 95-105dbs the b&w will start to sound compressed. That and the b&w will need a lot more power .
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