selenium coax speaker question

[Cal Weldon]

The two on the top are the 1855 Al units.
The two on the bottom are the 1870's
It's two cabinets in one
The tweeter is the HiVi K1
Cal

 

[Cal Weldon]

Well, the long awaited 15's arrived this morning. And surprise, surprise they have a different appearance. As you can see by this pics, the cones are a different colour.

 

[Cal Weldon]

The dust caps are slightly different also. Here's one. Notice you can see through the cap to the phase plug.

 

[Cal Weldon]

Here's the other, that you can't see through.

 

[Cal Weldon]

After having listened to them it's hard to believe that I can't hear a difference between the two. Good thing they are going to be hidden from view. Nice XO on them too.

Cal

 

[planet10]

Well, the long awaited 15's arrived this morning. And surprise, surprise they have a different appearance. As you can see by this pics, the cones are a different colour.

Nice tablecloth...

I'd at least contact the vendor... you did order a "Pair". Have the dat codes handy (ie if you can get another with a date code close (same is the best close) to one you have they are likely to be MUCH closer in performance.

dave

 

[darth_sanchez]

they are nice looking coax's 😀 they look very different to what is pictured on the net.

i been looking around on rear loaded horns. the ones that got my attention were these, for the fostex speakers

An externally hosted image should be here but it was not working when we last tested it.

i downloaded the hornresp program, but i have no idea what to do no it!!?!?!?!?

lol might get someone to help me design rear horn for the coax's

anyone here able to push me the right way? i know my mate uses hornresp, but he isnt on the internet anymore, so i cant exactly get his help.

 

[planet10]

i been looking around on rear loaded horns. the ones that got my attention were these, for the fostex speakers

The pic isn't showing up -- access forbidden.

Perhaps you can link to the project at the Single driver website?

dave

 

[GM]

The 15C01P's semi-high Qes means a huge horn even with a relatively high Fc since you have to start with a relatively large filter chamber and a throat >Sd, so I recommend a max flat ML-TL if you have room for a pair of ~25ft^3 cabs tuned to ~29Hz, or a ~11.16ft^3 reduced Vb version if not. If this is still too big, then even a sealed cab is going to be close to 8ft^3.

GM

 

[darth_sanchez]

The pic isn't showing up -- access forbidden.

Perhaps you can link to the project at the Single driver website?

dave

here the pic, i was talkin bout

 

[planet10]

here the pic, i was talkin bout

An acousta-style back horn.

dave

 

[darth_sanchez]

they look good 😀 i just need help in modelling up for the coax, make a bigger vers of it.

that hornresp program look difficult 😀

 

[Cal Weldon]

After listening to them again, I am able to detect a slight difference in the high end and as you might expect it is the see through cap that has the better highs. No return phone call from PE as promised.

Cal

Edit: I have called again and got a fellow who seems a little more interested in my plight. He is going to try and track down a single somewhere and will let me know in a day or so. Will keep you posted on the progress.

 

[darth_sanchez]

hope everything goes alright. lol; does that mean you get to keep the other driver??

 

[Craig Schmidt]

Jensen Imperial

I am in the process of building these exact speakers. I was going to use three separate drivers but have switched to turning the unit upside down and using a Radian 15 inch coax. this driver just about makes it spec wise (low QTS and highish fs). Flipping these giants was common practice, even for Jensen. they actually suggested coaxes for this cab. If you want full plans on the cheap go to www.highefficiencyloudspeakers.com. They sell a great set of plans for 20 bucks delivered. they go into great detail and even show the cut layout on the ply sheets. If you want Selenium products he is the cheapest around. The guys name is Ron Shaw. he is very good to deal with. he also sells a dynamite and cheap electronic crossover for biamping. I have built a lot of speakers but this one has been the most demanding and I am no where near done. believe it or not but you can still get the grill clothes that were used back then (at least color wise).

 

[rcavictim]

I'm seeing the name Radian and the name Selenium used in this thread as though they are referring to the very same coaxial driver. I thought these were two different companies. Can someone clear up my confusion on this issue? Thanx.

BTW, the link to highefficiencyloudspeakers.com posted above is not working for me.

 

[Cal Weldon]

Doesn't work for me either.

Cal

 

[Brett]

I'm seeing the name Radian and the name Selenium used in this thread as though they are referring to the very same coaxial driver. I thought these were two different companies. Can someone clear up my confusion on this issue?

They are two seperate companies. Radian is US based and Selenium Brazillian.

 

[GM]

No, two different companies and I give Radian the nod as the better performer of the two.

http://www.highefficiencyloudspeakers.com/default.asp

GM

 

[Craig Schmidt]

Radian

The period on the end may be doing it. Sorry about that!. The only reason I mentioned the Radian is because someone else brought it up first. They are definately two different companies. If I misposted I am also sorry about that. This was my first time on this site.