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Decware Imperial from Africa to Sweden (Read 18950 times)
Azul Shiva
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Re: Decware Imperials equipped with UREI 813
Reply #15 - 12/07/10 at 10:18:04
 
omfg, wow nice!
Looking forward to read sound review.
regards, azul
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Cobra
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Re: Decware Imperial from Africa to Sweden
Reply #16 - 12/08/10 at 19:14:40
 
Hi Azul.

Are you still contemplating to build a pair of Decware Imperials? I have listened to some 30- 100.000 USD speakers since I came back to Sweden. They all look very good and they use materials as kapton and beryllium and perhaps kryptonite, but do they sound better? I say no..
Physics has not changed since Altec Lansing started to build their 604 speakers during WW2. Klangfilm was designed at the same time and still sounds extremely good. I am a firm beliver that if you in your approach to music like to be "there" 30-100 feet from the jazz group or the philarmonic orchestra, -High Sensitivety, Active Crossovers and proper horns will make your day. This Saturday I will marry a woman that understands what it takes to go under 50hz.
Good luck..


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« Last Edit: 12/08/10 at 19:17:55 by Cobra »  
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Azul Shiva
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Re: Decware Imperial from Africa to Sweden
Reply #17 - 12/08/10 at 20:05:00
 
Hi Cobra!

Currently Im using a pair of Fostex bk108 and I use a corner horn with an 18" Sub from Mivoc and im quite happy with the result. Because of lack of money, I had to cut back on speakers, my systems not worth more than 2000usd.
I kinda forgot about the Imperial.

Plenty people saying theres no better bass than coming from a corner horn (107db/w), and my fostex mids and highs really pull it off too.
Saying that a 1000 Dollar Imperial sounds better than a 100 000 one, im not sure whether to believe, you thinking its really worth building it? Is the Imperial really something that special you get nowhere else?

What Chassis would u recommend?

Im a little skeptic, and decware usually exaggerates slightly when talking about their own stuff. And sorry but you cant make me believe that a 15" driver sounds better in mids than a fostex speaker with 4g membrane and qts 0.26, I guess youre only talking about the bass. Would it really be worth building it and compare with the corner horn?

regards, azul
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Cobra
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Re: Decware Imperial from Africa to Sweden
Reply #18 - 12/09/10 at 11:50:41
 
SmileyIf you take all costs in consideration, the Decware Imperials does not come cheap. You can easily end up between 5-10.000 USD for a pair.
If you look in Jensen`s technical bulletin from 1952, they are there in the original with one 15" woofer.I am using them as a 2 way system now dividing at 800hz. You can divide the Altec 288 8G compression drivers with MR94 horns as low as 500hz.
The HIFI world is a very special world and defined by belief like religion. My simple belief is that if you like to reproduce a sound as close as possible to a "live" situation where you physically can feel the music, you need to go with speakers with high sensitivity and horns. If you sit on row 15 in Berwaldhallen and listen to Anton Bruckners second symphony, you feel it.
I decided that if I am going to spend over 6000USD in parts and material for a pair of speakers, it would be stupid to go with passive crossovers as I would have to rebuild them for my new living room not knowing of coming reflexes and resonance frequencies. Another reason to go active was to avoid the cable jungle. As differences in capacitans and impedance allways excists between components, cables function as equalizers giving your speakers different sound reproduction. I avoid most of this by using a good quality DSP loadspeaker management system.
I can not judge if your speaker elements are better or worse but I do know that if you buy proper elements for the Imperial you will be rewarded.


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Azul Shiva
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Re: Decware Imperial from Africa to Sweden
Reply #19 - 12/09/10 at 12:51:55
 
Do you know where I can find technical detail for the imperial, including frequency analysis, and the fall of spectrum? How many db does the Imperial bring at 1w? Thats what Im really interested in.
I dont really understand, to me the Imperial is just a standard, large, horn speaker, back or rear loaded whatever... I can do any calculation with any 15" driver or larger, create a large horn speaker and say it sounds great (like everyone else here) and I guess it will. Whats the big difference??
Im saying that, because theres still plenty of people out here fancying decwares bandpass Subs and other stuff not really being that good...

You say in order to create a live atmosphere one needs horn speakers, and lol I know I am using horn speakers with extremely high sensitivity (100db+). My Subs got 107db and Id be curious if the Imperial could top that.
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Cobra
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Re: Decware Imperial from Africa to Sweden
Reply #20 - 12/09/10 at 13:35:56
 
Here is a link to homepage where the Decware Imperial is simulated.
http://www.linnaraudio.com/simuleringar/imperial/index.htm
Have a look.
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Azul Shiva
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Re: Decware Imperial from Africa to Sweden
Reply #21 - 12/09/10 at 15:46:08
 
Thanks a lot! Its in swedish, but Ill manage. 105db/w at below 20Hz is pretty impressive, wow. I might have to reconsider the damn thing... I assume they used one Imperial, with only one speaker, looks like deckert was right since he used 2 per pair, and 2 at the time ....making 122db per watt? omfg. Gonna order the plans and take a look =).
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Azul Shiva
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Re: Decware Imperial from Africa to Sweden
Reply #22 - 12/09/10 at 16:02:56
 
Wow, wait a minute, 5000usd? where did you come up with that number? I calculated 1200 sfr for the wood, roughly 1500 for the cabinet, with the two daytons it shouldnt exceed 2000. Did I miss something or are you simply using high end drivers? regards,
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Cobra
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Re: Decware Imperial from Africa to Sweden
Reply #23 - 12/09/10 at 16:45:15
 
I am including the Altec 288-8G with MR94 horns. I think the the design of the compression chamber is the secret. I find the bass fast and dry.
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gildcm
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Re: Decware Imperial from Africa to Sweden
Reply #24 - 12/16/10 at 21:35:01
 
I built my imperial for between $500 and $750 USD to Decware specs. It sounds great and have used it both as a sub and full range with a 1" horn on top. As a sub I was shaking an entire theater of about 750 seats. Made the glass on the back wall rattle.
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Valiant
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Re: Decware Imperial from Africa to Sweden
Reply #25 - 12/21/10 at 14:02:37
 
I'm with you gildcm, you can build an excellent set of Imperials for less tha $1000 US, if you can get hold of some resonably cheap wood. I've built some speakers where the wood was the minor component. If I didn't have a mate in the chipboard factory, well yeah, I'd be looking at maybe 2-3 thousand dollars. As it was, I got all the wood, HD Particle board (18mm) for $100.
Gaz
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Cobra
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Re: Decware Imperial from Africa to Sweden
Reply #26 - 02/03/11 at 11:26:52
 
Building the Decware Imperials has made me change my HIFI attitude totally and the following would never have happened if I had not found the Decware Imperials on a HIFI forum in 2008.
In late 2008 I bought a dbx Driverack 260, a Rotel RMB1077 7 channel class D amp and started to drive each speaker element separately. Last year I tested several of the high end active crossovers with price tags up to several thousand dollars when I stumbled upon the Bunker BPD-1. I started to talk with the manufacturer and eventually we initiated a cooperation. This has resulted in a HIFI version with a linear power supply that sounds outstanding. My Imperials are now digging down to 20hz and they produce an improved more transparent high end.
I am now the distributor for Europe and Africa and we are presently building a homepage that will be devoted to active amplification. I our demo facility affordable open baffle and horn speaker solutions will be used as references and the most important reference are my DECWARE IMPERIAL`s. Have a look at www.taot.n.nu    
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« Last Edit: 02/03/11 at 11:28:44 by Cobra »  
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Cobra
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Re: Decware Imperial from Africa to Sweden
Reply #27 - 08/17/12 at 12:33:34
 
I have finally finished the horns under the living room. They are equipped with 4 pcs 18Sound  15W1200. I am presently dividing at 67hz and they work fine. They go very deep.
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