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Old 17th June 2010, 04:05 PM   #21
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Hi everyone: I can get my grubby hands upon a pair of Coral Flat 10's for a fairly low price...and they are in sensational condition (????) however, what could I put them in?
Dave
Use the plans for the Coral Beta 10 cabinets as given in the East Marine website.. The 5-port BR cabinets works very well with the Coral Flat 10, Beta 10 and the quite rare Coral Alpha 10s as well...

Do note the highs on the Flat 10 are not as extended as the Beta 10... so you'll probably need to add a super tweeter..

See this report of one of our earlier Singapore Noising Diy gathering...

Singapore NoiSING 2005 DIY Audio Gathering Show Report

Scroll down a bit... you can see the Flat 10 in that 5-port BR port.. we had very good results with the Flat 10 with the ESS AMT super tweeter on top...

Last edited by BTW; 17th June 2010 at 04:10 PM.
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Old 18th June 2010, 02:14 AM   #22
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Thanks BTW.
I love the photos of the noiSING fest held in Singapore. Thanks for the lead. Gosh the quality of DIY work is fantastic. I dream of being part of a group like that where I can learn and try ideas and then have a big display night! Most of the time DIY audio is done in isolation...apart from this great site.
Kind Regards: Dave
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Old 18th June 2010, 05:46 AM   #23
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Thanks BTW.
I love the photos of the noiSING fest held in Singapore. Thanks for the lead. Gosh the quality of DIY work is fantastic. I dream of being part of a group like that where I can learn and try ideas and then have a big display night! Most of the time DIY audio is done in isolation...apart from this great site.
Kind Regards: Dave

Hi Dave,

Thanks for you kind comments... Yes, we have some very good Diyers here in Singapore..

If you need more help/information on the Corals drivers etc... You can email me... I used to collect Coral drivers and spent quite a bit of time and effort on these drivers...
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Old 18th June 2010, 12:48 PM   #24
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Default I Second using Heils

Quote:
Originally Posted by BTW View Post
Use the plans for the Coral Beta 10 cabinets as given in the East Marine website.. The 5-port BR cabinets works very well with the Coral Flat 10, Beta 10 and the quite rare Coral Alpha 10s as well...

Do note the highs on the Flat 10 are not as extended as the Beta 10... so you'll probably need to add a super tweeter..

See this report of one of our earlier Singapore Noising Diy gathering...

Singapore NoiSING 2005 DIY Audio Gathering Show Report

Scroll down a bit... you can see the Flat 10 in that 5-port BR port.. we had very good results with the Flat 10 with the ESS AMT super tweeter on top...
I presently use the Sachiko cabinets which I absolutely love. I tried using the both the FE206E and then later upgraded to the FE206ES-R drivers. However as good as both were and they were very good indeed. I knew I could do better. After a lot of searching I located a pair of Fostex's very rare ---{only 250 pairs worldwide}--- and very expensive FE208ES-R drivers.

The FE208ES-R due to it's large alnico motor roll off rapidly from 100Hz & lower in the Sachikos. However from 100Hz - 7KHz the quality of music replication is reference standard. Honestly being as good or better than anything I've ever heard anywhere! I decided to work on extending the high frequencies first as it was the easier task of the two.

Like the poster I'm responding to suggested, I did this by added a pair of large Heil dipoles, which now ---{after days of trying various capacitor types & crossover slopes}--- seamlessly extend the FE208ES-R drivers out to 25KHz+. I cannot stress taking the time, which may be days like it was with me, to find the correct caps that don't allow any stridency in the highend frequencies. I'm using very large Sprague PIOs & Russian K75-10 PIOs rated @ 250V in parallel. The Heils are capable of matching the Fostex in speed and transparency. I personally like them better than any horns I've heard.

Now from 100Hz -- 25KHz I have what I consider to be reference quality and what my friends from Centreal Florida Audio Society, SETriodes Group & Space Coast Audio Society call world-class musical replication! Now I just need to build a pair of tapped horns to cover as much as 20 -- 100Hz as I can get and I'm finally done...

Thetubeguy1954 (Tom Scata)
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Old 18th June 2010, 01:45 PM   #25
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The FE208ES-R due to it's large alnico motor roll off rapidly from 100Hz & lower in the Sachikos.
Actually (unless the motor is far weaker than claimed), it'll be the high Vas.
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Old 19th June 2010, 12:01 AM   #26
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Originally Posted by thetubeguy1954 View Post

Like the poster I'm responding to suggested, I did this by added a pair of large Heil dipoles, which now ---{after days of trying various capacitor types & crossover slopes}--- seamlessly extend the FE208ES-R drivers out to 25KHz+. I cannot stress taking the time, which may be days like it was with me, to find the correct caps that don't allow any stridency in the highend frequencies. I'm using very large Sprague PIOs & Russian K75-10 PIOs rated @ 250V in parallel. The Heils are capable of matching the Fostex in speed and transparency. I personally like them better than any horns I've heard.


Thetubeguy1954 (Tom Scata)
Hi Tom,

Yes, the ESS AMTs are one of the nicest super tweeters you can add on to your fullranger... IMHO it's dipole nature gives it a very airy nature.. We've also tried a couple of JBL compression drivers.. a bit more tricky to integrate with the Corals.. but we finally got very nice results with the JBL compression drivers mounted with the JBL Hartsfield compression driver diffuser Lens.... I also recently heard the Top of the line Fostex Alnico super tweeters.. I think these are also very nice super tweeters for fullrangers.
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Old 19th June 2010, 05:16 AM   #27
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Originally Posted by thetubeguy1954 View Post
After a lot of searching I located a pair of Fostex's very rare
Isn't that a bit of a stretch? Didn't you end up with Clark's after i suggested he might part with his pair?

(less than 24 hrs between you announcing you had killed your 206eSR and i suggested Clark)

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Old 19th June 2010, 12:57 PM   #28
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Isn't that a bit of a stretch? Didn't you end up with Clark's after i suggested he might part with his pair?

(less than 24 hrs between you announcing you had killed your 206eSR and i suggested Clark)

dave
Dave,

You're 100% correct and I did get Clark's FE208ES-R drivers, but I had been looking for a pair for sometime before I killed my FE206ES-R drivers. It was only after killing my FE206ES-Rs ---{that I also really liked}--- that I now had such urgency in finding a pair of FE208ES-R drivers and hence starting asking everywhere ---{as opposed to just perusing the Japanese auctions sites as I had previously}--- about where I might find a pair of FE208ES-R drivers.

I do believe that once you told be about Clark's pair that within 48 hrs Clark & I entered into the negotiations that led to my owning my present pair of FE208ES-R drivers about 2 weeks later! Sorry if there was a misunderstanding...

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Old 19th June 2010, 06:12 PM   #29
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Glad to hear you are enjoying them. Guess you could calll your speakers "SiperMads"

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Old 20th June 2010, 03:51 PM   #30
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Default Sachiko Reference I

Quote:
Originally Posted by planet10 View Post
Glad to hear you are enjoying them. Guess you could calll your speakers "SiperMads"

dave
Hey Dave!

I heard you met my friend Karl recently and gave him a tour of your facility. That was very kind of you. SuperMads would be a great name, but I've stopped refering to them as Madisons and now tell people they're Sachiko cabinets custom made for me by Cardersound. I did that for two reasons:
  • Maybe I'm mistaken, but it felt like Jeff Carder seemed to want to distance the Sachiko/Madison from the new proprietary Madisons.

  • They really stopped being "Madisons" the moment I replaced the drivers in the cabinets & added the large, dipole Heils.

I consider them to be the Sachiko Reference I. Which were only made available through the help of yourself, for telling me where I could finally find a pair of FE208ES-R drivers. Clark for selling me those FE208ES-R drivers & Scottmoose for assuring me that, while using the FE208ES-R drivers in the Sachiko cabinets, as opposed to the FE206E or FE206ES-R, would produce a vastly limited frequency spectrum due to their large motor ---{which turned out to be approx 100Hz to 7KHz}--- it would be at an extremely accurate level of musical replication.

Scottmoose, was of course correct and I till cannot believe the quality of musical replications the Sachiko/FE208ES-R/Heils are capable of. I have to keep wiping a stupid grin off my face everytime I listen to them. Sometimes I just cannot believe these are my speakers. With the addition of the large, dipole Heils ---{something I wasn't sure would work due to the dissimilar radiation patterns of the Sachiko/FE208ES-R and the dipole Heils, but it works extremely well}--- the frequency response it incredibly lifelike from 100Hz to 25Khz+.

In these next coming weeks I'll be having some friends over to help with adding different subs ---{I believe we're starting with 15" OBs}--- to try and cover as much as we can get from 20Hz to 100Hz. The goal is to as accurately and seamlessly as possible, try different subs that mate wll at 100Hz and then add as much as we can below that frequency without damaging the quality of reproduction I presently have. I realize this will be no small task.

Unfortunately, the difficulties will be compounded due to health reasons on my part that have nothing to do with my disability & require some upcoming exploratory surgery this July. I'll make every effort to keep everyone informed of how things progress with extending the Sachiko Reference I's lowend frequency response, as my health permits! My heartfelt thanks to everyone who helped me get to where my speakers are today. I still cannot believe how in 2 short years my system has lept light years ahead of where it was and it's all because I came across the Frugal-Horn site one day. The rest as they say, is history...

Thetubeguy1954 (Tom Scata)
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Last edited by thetubeguy1954; 20th June 2010 at 03:54 PM. Reason: misspellings
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