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  #1  
Old 11-01-2014, 03:22 PM
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terentellie terentellie is offline
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My HT/Stereo setup w/dyi speakers

My 1st post.. I have a custom PC I built as my primary source. It's cooled by T.E.C's and water. Which feeds audio through optical to a Marantz 8801 Preamp Processor. Then the surround and center speakers are powered by an Adcom 5006 with the fronts powered by a SoundValves (Hafler replica) amp. The speakers I made myself using Peerless and Vifa drivers and ERSE caps resistors and coils. The subs I have had for a long time now are two 15" Swiss Audio SPL series in 7.5 cubic ft cabinets tuned to 17Hz and Two unknown 15" aluminum coned subs in a 3 cubic ft sealed cabitnet. The big cabinets I built. The smaller ones I bought many years ago from Jamac in Portland, OR. The subs are driven by an Adcom 555MKII modified by K-Amps. It is a totally different animal now. I am looking to replace the SoundValves and 5006. Trying to find the right 7 channel amp for my setup.

Enjoy
Attached Images
File Type: jpg Hometheater Edit.jpg (30.8 KB, 85 views)
File Type: jpg HTRear Web.jpg (19.3 KB, 50 views)
File Type: jpg Rack WEB.jpg (66.6 KB, 95 views)
File Type: jpg 20140621_082326.jpg (56.7 KB, 89 views)
File Type: jpg DSCN3555.jpg (102.0 KB, 89 views)
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Old 11-01-2014, 03:26 PM
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rogerfederer rogerfederer is offline
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wow, very cool.

i'd love a thread on each of those items. like, how did you build that computer?
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Old 11-01-2014, 03:47 PM
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terentellie terentellie is offline
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Smile

You just pick out a case, motherboard and all the components to match the motherboard. The cooling system was tough though. A lot of practice fitting, assembly dis-assembly and some drilling. The computer ended up needing a 2nd power-supply for the cooling alone. Here's a close up on it from you tube https://www.youtube.com/watch?v=2iQBVwK7wHc[/url]
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Old 11-01-2014, 04:32 PM
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Rome Rome is offline
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Very nice & the computer build is also a treat!

I need a faster one with a better video card or something.

Rome
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Old 11-01-2014, 05:00 PM
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terentellie terentellie is offline
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I am glad you guys like it. I was worried posting it. You never know how people might respond. And I think a persons stereo is.. well personal.

I do need help figuring out which amp/amps to get for the upper speakers.

I was using three DH-220's before. I had been a Hafler fan since I was about 13. I had that Adcom 5006 in my game room and then on day I decided to see what it sounded like on my main system and I was sad because it sounded as if it had more clarity then my haflers. So I sold all but one of the haflers. The two I sold were in very nice shape.
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Old 11-01-2014, 05:19 PM
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rogerfederer rogerfederer is offline
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how did you design the speakers?
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Old 11-01-2014, 05:20 PM
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i think you're a much better craftsman than you are a photographer. i'd love some more illustrative shots of your gear and the whole system....

cool stuff
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  #8  
Old 11-01-2014, 05:56 PM
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terentellie terentellie is offline
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Quote:
Originally Posted by shrinkboy View Post
i think you're a much better craftsman than you are a photographer. i'd love some more illustrative shots of your gear and the whole system....

cool stuff
I am a terrible photographer

I am also terrible at getting the terrible photos to upload...

So the 1st is the raw surround cabinets, the 2nd is a close up of the front. All the walls are 1.5" thick and that is what I was trying to capture there. The 3rd picture is a test fit once I put the stain and clear coat on. The 4th is the High-pass crossover. And the last is the left front tower.
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File Type: jpg 20140427_121441.jpg (46.3 KB, 42 views)
File Type: jpg 20140427_135325.jpg (41.5 KB, 27 views)
File Type: jpg 2014-05-12 19.55.48.jpg (46.7 KB, 35 views)
File Type: jpg 20140531_103327.jpg (49.6 KB, 29 views)
File Type: jpg 20140601_123510.jpg (23.4 KB, 45 views)
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  #9  
Old 11-01-2014, 06:15 PM
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terentellie terentellie is offline
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Quote:
Originally Posted by rogerfederer View Post
how did you design the speakers?
Well.. It took me a long time.. I bought the woofers (14 of them) several years ago. I thought Peerless was going out of business and wanted to get them before I couldn't any more.

Then when the dual concentric dome came out I fell in love with it. On paper it looked pretty good. In photos I thought, "Damn that's sharp" but they were back ordered for ever and when they came in stock I ordered 7 of those. I had no idea getting those woofers to play nice with those tweeters would be such a headache.

My 1st mistake was buying all of the crossovers at once thinking I had it right. Maybe I can reuse those coils and caps on something else some day

Then I tried some zobel networks on the tweeter. I couldn't get this squeal sound to go away. Then one day I decided to listen to the drivers separately and realized the squeal was coming from the woofers. I then started swapping parts and found the capacitors I was using along with the order of the crossover was my problem. I then started pricing how much a zobel network for the woofers would cost. When I added it up and weighed the benefits I decided to simplify instead of going overly complex. So in the end I went with a simple coil on the woofers and a 4th order butterworth on the tweeters (I'm sure I'll see some comments on that). Maybe I broke some rules but it sounds best this way to me and those I asked.

The cabinets I used a computer program too plot out. I built a few different versions. Some had tube ports, some MTM's, MMT's, Then I decided to try a time aligned MMT. To me that sounded best. And the slot port sounded much more natural than the tubes. I swear I could hear the plastic from the port!

I also aligned the tweeter on the center. I didn't do it on the rears because of the height of the cabinet with a tweeter on top and also since the speaker is so high up and the tweeter is above the woofer you kind of get the delay on the tweeter anyway.

I have built a few since I was a teenager. These are the best sounding so far.

Let me know if you have any more questions.
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Old 11-05-2014, 08:38 AM
Kzoomichman Kzoomichman is offline
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DAMN!! With your sub/amp combo I'll bet your neighbors neighbors have noise complaints about you!!
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  #11  
Old 11-05-2014, 11:19 AM
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terentellie terentellie is offline
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Quote:
Originally Posted by Kzoomichman View Post
DAMN!! With your sub/amp combo I'll bet your neighbors neighbors have noise complaints about you!!
They used to. I bought my house about two years ago and made sure it was brick. You can hear it across the street but I don't think they can hear it inside the house. We also make sure the doors to all of the rooms are shut to help keep the noise in the house.

I did get 3 visits from the cops when I was younger though and they told me if they had to come out one more time they would take my stereo and put so many fines on me that I would never get it back. So I moved to a more isolated house
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Old 11-05-2014, 11:42 AM
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tcdriver tcdriver is offline
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Welcome to AudioKarma. That is one custom setup. Very nice work you did. Thank you for sharing.
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