|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
72.188.12.218
Seeing as how AA is developing their classified section, I thought this would now be an appropriate post to make. I recently purchased the pair of T900a tweeters listed in AA classifieds by John K of Kalinowski's Custom Loudspeakers! Due to an error on my part the T900a's weren't shipped right away ---{like a fool I forgot to include my address with my $$$$$$}--- however once that was cleared up the T900a tweeters arrived promptly and in immaculate condition. My Kudos to KCS!
The best part is after I finally got around to hooking them up today around 5:30PM and I've listened to them for about 1.5 hrs straight, I realized John K. was absolutely correct about their sonics! These T900a tweeters do make my Pioneer HW-7's sound a bit strident and hard, but that's only when doing a direct comparison. Now with these T900a tweeters installed the music from the highest highs down through the midrange and all the way into the bass has just become even more relaxed, easy to listen to and musical.
On top of that these incredible Fostex T900a tweeters do not give up one iota of detail or inner detail the Pioneer HW-7 tweeters also excelled extremely well at reproducing and that's a difficult road for any tweeter to travel, i.e., to sound articulate, have lots of detail & inner detail, while remaining sounding relaxed, like the HW-7's did and these T900a's manage to do at even much higher level!
My sicerest thanks to and my highest recommendation of doing business with John K and Kalinowski's Custom Loudspeakers!
I'm listening to:
Thetubeguy1954 (Tom Scata )
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
=================================================================================
"The man that hath no music in himself, nor is not moved with the concord of sweet sounds, is fit for treasons, deceptions, and spoils;
The motions of his spirit are dull as night and his affections dark as Hell. Let no such man be trusted."
- William Shakespeare from The Merchant of Venice; Act V,i
Follow Ups:
I have always liked this tweeter,> I have tested Audax,EV,JBL,Emilar, Gauss,
and all the Fostex. The T 900 goes quite low, which makes it "blend" easier when designing a network.
I have the curve, but that computer is not working just now.
Bill
Bill I have two large what I'm told are PIO Sprague 2.0 caps. They're actually look much like the two large caps seen in the crossovers on back of Gary Pimm's modified Heils below.
So my two questions are:
1) Can I place these two Sprague 2.0 caps in parallel in place of the two 2.2 caps you show in your network or is this new value not close enough? If not I suppose I could try and get one .4 or two .2 caps somewhere.
2) What is the intended frequency crossover point of the network as you designed it? How much will the crossover change if I have a paralleled total of 4.0 instead of 4.4? I also have another large Sprague that's 1.0 and a 3.3 Russian K75-10 hybrid Paper & Polyethylene Terephthalate in oil capacitor that would total 4.3 paralleled if that would be my better choice.
Thanks for your time Bill.
I'm listening to:
Thetubeguy1954 (Tom Scata )
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
=================================================================================
"The man that hath no music in himself, nor is not moved with the concord of sweet sounds, is fit for treasons, deceptions, and spoils;
The motions of his spirit are dull as night and his affections dark as Hell. Let no such man be trusted."- William Shakespeare from The Merchant of Venice; Act V,i
Edits: 02/22/12
you can use 3.3uf to 4.7 uf caps. There is very little difference between 4.4 and 4.0 uf.
I "Xed" out the resistor, but this controls the sharpness of the roll-off.
You can use a 2r resistor.
I am not a capacitor expert, but we measurements of Polypropylene, Mylar,old oil filled and cheap electrolytic s with the Schlumberger test unit. ($22000.00)
The polypropylene were the best, but only slightly better than the old oil filled. Mylar was not quite as good.
electrolytic were the worst.
It should be noted though that there has been considerable improvment it electrolytic since this test.
JBL uses a lot of them.
Much more important is to place the tweeter in line with mid diaphragm. Use noise and listen to do this.
Thanks Bill! I appreciate your input and endorsement of this driver. It means a lot coming from you.
I'm listening to:
Thetubeguy1954 (Tom Scata )
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
=================================================================================
"The man that hath no music in himself, nor is not moved with the concord of sweet sounds, is fit for treasons, deceptions, and spoils;
The motions of his spirit are dull as night and his affections dark as Hell. Let no such man be trusted."
- William Shakespeare from The Merchant of Venice; Act V,i
Glad your enjoying the t900a. I have used many t900a t500amk2. I will post a pic soon of the monster 4 way front horn I installed the amk2 in.
Edits: 02/20/12
John I'm definitely enjoying these T900a drivers. I'm glad I decided to take your word about them being more refined and relaxed sounding compared to the Pioneer HW-7 horn tweeters I loved using. You were definitely right on the money with that assessment.Thanks again for the heads up about your ad on Audio Asylum's trader. Since they haven't made room for feedback there as of yet ---{ I'm quite sure Rod is working on that as we speak }--- I left some feedback for you here instead.
I'm listening to:
Thetubeguy1954 (Tom Scata )
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
=================================================================================
"The man that hath no music in himself, nor is not moved with the concord of sweet sounds, is fit for treasons, deceptions, and spoils;
The motions of his spirit are dull as night and his affections dark as Hell. Let no such man be trusted."- William Shakespeare from The Merchant of Venice; Act V,i
Edits: 02/20/12
I too use Fostex t900a bullet tweeters (along with Oris 150 horns driven by AER MD-3s and a pair of Bill Fitzmaurice's excellent HT Tuba corner horn subwoofers), and I totally agree with every good thing thetubeguy1954 had to say about about the t900a. They are a bit pricey, but worth every penny.
Where have you placed the tweeters in relationship to the Oris horns. I have been thinking about adding a horn supertweeter to my Oris/Aer set-up, but I'm not sure how to mount them.
After consideringf many different possibilities I made what I arbitrarily call a tweeter crane. The major structural members of the crane arte 2" thick teak after mucho sanding. Sonically I find the results pleasing, but it's hard to imagine a more labor intensive way of doing it. The picture below (assuming I manage to post it) will illustrate what I am writing about.
Wow Don! That really is "over the top" :- <> . Nice work man.
Jim D.
Hi Don. I'm presently using a pair of Sachiko double-back-loaded horns setup as seen in this photo below ---{ except the FE206ES-R drivers shown in this photo have been replaced with Fostex FE208ES-R drivers }--- I also have the T900a horns are placed slightly above the FE208ES-R drivers mounted outside of the Sachikos, with the tweeters placed on the inside like Terry Cain did in his Double BEN cabinets.
I happen to have a pair of 160 Azurahorns which are somewhat similar to the Oris 150 horns you're using. My question has 4 parts:
1) Have you ever used back-loaded horns?
2) Are the front horns more sonically pleasing or correct?
3) What driver/cabinet types are you using below your Oris horns?
4) Where did you get those beautiful metal stands that are holding your Oris horns & what did they cost for a pair?
I'm listening to:
Thetubeguy1954 (Tom Scata )
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
=================================================================================
"The man that hath no music in himself, nor is not moved with the concord of sweet sounds, is fit for treasons, deceptions, and spoils;
The motions of his spirit are dull as night and his affections dark as Hell. Let no such man be trusted."
- William Shakespeare from The Merchant of Venice; Act V,i
Hey tubeguy1954,Your questions were:
1) Have you ever used back-loaded horns?
2) Are the front horns more sonically pleasing or correct?
3) What driver/cabinet types are you using below your Oris horns?
4) Where did you get those beautiful metal stands that are holding your Oris horns & what did they cost for a pair?#1. No, I have never used back loaded horns. The only reason for that is that I have some experience with front loaded horns, and I have found them to be easy to understand and sonically pleasing in many ways. Other than that I have a half baked theory that back loaded horns could cause some timing or phase problems as a result of the delay of the back wave in relation to the front wave because of the time it takes the back wave to travel the length of the horn before being emitted. I don't know if this theory has any validity or not.
#2. Having no experience with back loaded horns I am not qualified to say.
#3. Below the Oris/AER I am using a Bill Fitzmaurice designed HT Tuba folded corner horn subwoofers driven by Dayton Audio RSS390HF-4 15" Reference HF Subwoofer 4 Ohm. The crossover is nominally 160Hz with high pass and low pass slopes of 96dB/octave accomplished with a DEQX HDP-3. The DEQX also allows the AER drivers and Dayton subwoofer drivers to be time aligned as though the acoustic centers of the drivers were within less than 1/8" of each other instead of the 16+ ft. that actually physically separate them. I am very pleased with the HT Tuba subs, but I do not know if I would be as pleased with running them up to 160Hz if I were using crossovers with more typical 18 or 24dB/octave slopes.
#4. If you are referring to the black powder coated aluminum rods and bands which directly support the Oris horns that is a product sold by BD Design, the source of the Oris horns. I don't remember the price. If instead you are referring to the entire wood, brass and aluminum stands they are something I designed and made for myself. The truncated pyramid box on the bottom is filled with sand as part of a vibration dampening system I invented. With the exception of threaded fasteners all of the brass parts were made from scrap brass I picked up at a scrap metal yard. My visual paradigm for the stands was movie maker's or book illustrator's concepts of Victorian or Edwardian era science fiction apparatus such as H.G. Wells time machine or devices aboard Captain Nemo's Nautilus. A member of this asylum has since taught me that style is now called steam punk.
Thank you very much for the compliment.
The picture below will perhaps help the above text be more understandable.
Edits: 02/21/12
Wow, what an amazing construction. And do you find the sonic benefit worth the effort?
Hi Belyin,
Thanks for the compliment. Yes I do find the sonic results to be worth the effort especially now that I have had seven years to forget what a pain in the ass it was to fabricate and assemble the things. Honesty requires that I mention that my answer would be more specific and perhaps more reliable if I could knock a bunch of years off my age and again enjoy the very good hearing I had as a young man of fifty-=five.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: