All Eminence OB

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#481
BHTX said:
On the other hand, wtf is causing that peak? Someone rip off their dustcap
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To do away with the dustcap would probably be a good move

I think its wrong to call it a "2khz peak"...its a 10db smooth "rise" from 1khz to 2khz and should be easy to deal with...btw, it shows on impedance

But I suspect that such a relatively thin curve linear cone is "all over the place" at higher frequencies
So, I would try to make some kind of pattern on the cone, to control the breakup...but it will have to be light

An angled radial pattern of suction pipes is doable
Or stripes of the exstremely light wood, in danish called "balsa-wood"
Glued to the back of cone, ofcourse

Or/and you could make a "flower-pattern" on front with rope of natural fiber, soaked in glue or something
 
#482
I've just read this entire thread from start to end. I was pointed this way when choosing drivers for my 2nd passive open baffle speakers.

Great thread, thanks to all who made it so!

Of particular interest was the EnABLe process, which I didn't know about, and the phase plug usage possibilities. I also wonder about C37 lacquer - but perhaps it is not "required". I would like to dabble with these things once I have my basic speakers playing.

I will proceed with my plans of APT-80, Beta 8 and 2 x Beta 12LTA with confidence!

Cheers,
Simon
 
#483
Hi Simon,

Good to hear your plans! You have good times ahead 🙂

EnABL was what's needed to bring out the best from these spks. The sound is quite spectacular! I was amazed.

The APT-80 will need to be taken down a bit but a simple L-Pad will solve that 🙂

I will follow your project with great interest.

Best Regards
 
#484
Thank you Yunick, I enjoyed reading about your speakers and decided, largely from your descriptions, a similar approach could work for me.

I have no problem with some basics like L-pad.

I wonder, though, how does the APT-80 compare to a "normal", affordable dome tweeter? I can't help but think it will sound more "lively" and therefore mate with the other pro drivers nicely.

Thanks
Simon
 
#485
Y. Groome 😉

Yunick - tnx for nice picture you sent me ; judging by picture , she is worthy why I in first moment didn't recognize from whom mail is sent :clown:

anyway ......

answer to your question :

winning combination ( these drivers per side ):

Sonido SFR200 -1pc
Eminence Alpha15 -2pcs

Maynard's T network

that way ( two Sonidos and 4 Alphas , with T network) you'll have OBs without need for multiamping and active xover of any sort ;

we can even try series xover between 15" and Sonido ; lately nicely used in Lowther America/Papa's OBs .

cheers .........

( better hurry - soon small ones will crawl all over the house ..... you don't have much time for making some metal protective faces for spks )

:clown:
 
#486
..........sound more "lively"....
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That's is very correct! I havn't tried "regular" tweeters in this OB spks but the sound from APT-80 is really lively 🙂 These OB's can if you want play at ear deafening level with a clean and uncompressed sound.

The Alpha 6 I used did sound a bit thin in some types of music but carefull damping behind the driver made it alot better.

Best Regards
 
#490
Yunick .....

I just received your email ;

I'll reply later this evening ;

for now - don't have any suspicions regarding Sonido's - they're light years ahead of previous Poor Man OB - with Eminence 6 as very cheap solution ;

I'll send you few interesting links 😉
 
#492
I think this last recommendation has a lot to go for it. More so than the All Eminence setup. I don't think the Alpha 12 LTAs will provide satisfying bass. And is the Beta-8 much different from the Beta 6 ? The Alpha 15 is an absolute sure bet. Also may be chakija might contribute about Monacor SP130X/8 ?

/Erling
 
#493
Hej Skorpion,

Tack för senast. Det var roligt träffa dig och att få lyssna till dina skapelser på träffen. synd bara att tiden var kort. Önskar att jag tog med all eminence OB ist. för dom jag hade med.

Regarding the Sonido's they arn't that expensive and there seems to be alot of people who likes them. One thing that bothers me is that Sonido claim the spks are optimised for horns... So I wounder how they perform on a OB?
 
#494
skorpion said:
I think this last recommendation has a lot to go for it. More so than the All Eminence setup. I don't think the Alpha 12 LTAs will provide satisfying bass. And is the Beta-8 much different from the Beta 6 ? The Alpha 15 is an absolute sure bet. Also may be chakija might contribute about Monacor SP130X/8 ?

/Erling
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btw - that was what I meant - links to chakija pictures ..... or pictures here ;

in short - Monacors are better than Alpha6 (even if Chakija didn't tweaked Alpha6 at all , so he didn't discover their full potential) , but - what is even better - old elliptical Alnicos , pulled from old radios .....

Monacors goes to trading post in our local forum 😉

do I need to tell that I already talk to him about old alnicos ........

:clown:

OK - Chakija pics :

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but - all that is ( certainly serious ! ) fun ...... but Sonido drivers are in completely different league
 
#498
Yunick said:
Ohh very nice 🙂 Please let us know some impressions? maybe something about the differences between enclosers/OB? What is your preference?

Did you use them with Alpha 15" also?

Sorry for all the questions.... 🙂

Best Regards
Click to expand...

my Sonidos :
they're intended for our living room , nested in Mau XII BL horns ; I just don't have space for OBs ...... because that living room isn't too big ;(

so ..... to cut long story short , about my personal preferences - for my use - only TL , horn and OB

BR and closed box ....... nope ;
with one exception - when closed box is IB :clown:


with little search , you can find my pictures of them , posted in tomtt's "full ranger pics" thread ..... here - in Full Range forum
 
#499
"Bad Choky, edited your question to spoil my answer "
In a way, I was wanting to to have chakija commenting himself, but I am willing to accept your answer.

The Monacor SP130X/8 is not the perfect loudspeaker but it is very much better than its price might suggest. So using it in pairs or quadruples might very well be worth the extra effort.

I do not question that old Alnicos will be as good in the midrange but fullrange I think they are a real challange. And they are manufactured also in that way by paper voice coil holder.

/Erling
 
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