Adire HE12 crossover building help...

[Lambo240z]

Hi everyone, I am in the middle of building some special cabinets that will use the same Eminence Beta 12CX and Eminence APT-50 drivers of the Adire HE12. The cabinets will have roughly the same size as one of the 2 versions of the HE12.
It was the best possible solution for the "special" design of the cabinet as suggested by ThorstenL here in the forum.
Anyway, I am halfway thru the construction of the boxes but I need to start the crossover. It will use the same crossover that the HE12 used ( I have the plans ) but I have never built one so I asked some people that were helping me in an older thread I started but ThorstenL and Loren42 are too busy at the moment so I was trying to see if there was someone else here that could help with it.
I could pay for the labor as far as it was not too much
The thing is that this is a project for a friend and I dont want to start learning about crossover building in a "customers" project, plus I dont have much spare time after my job and the cabinet building.
Please is someone is interested, leave me a private message or here in the thread.
I am in Seattle so it should be in the USA so that shipping would not kill me.
If there is someone in Seattle also, even better since it would be really cool to test the cabinets after being finished. They are going to be something really interesting.
Thank you very much...
Leo

[TerryO]

Leo,

What exactly do you need help with? If it's actually wiring up the crossover, that might not be a problem. Do you have all the componets already? I'm assuming that you have Dan Wiggin's schematic, do you have a printed circuit board, or would it be placed on a perforated board?

Just asking.

Best Regards,
TerryO

[g3dahl]

Hi Leo,

I have testing equipment here in Silverdale...let me know if you can't find something closer. It's about a 20-minute trip from any of the ferries --Bainbridge, Bremerton or Kingston-Edmonds.

Gary Dahl

[Lambo240z]

Hi Terry and Gary, thanks for the replies. Terry, I needed help wiring or actually building the physical crossover. I have been reading about it and it doesnt seem too dificult but there are many questions that I dont have the answer for and prefer not to mess it up since these speakers are not for me.
Yes I have Dan Wiggin's schematic and I am about to buy all the components at Parts Express but I had a few questions since they dont have all the exact parts.
The issues are: It needs a 2.4uF 250V but Parts Express has only 2.2uF 250V
22uF 160V and there is only 22uF 100V
2.7mH 16 AWG P-Core Inductor and there is 2.7mH 15 AWG P-Core Inductor
0.36mH 20 AWG P-Core Inductor and there is 0.35mH 20 AWG P-Core Inductor
0.18mH 20 AWG P-Core Inductor and there is 0.20mH 20 AWG P-Core Inductor
13 Ohm 10W Resistor and there is 12.5 Ohm 10W Resistor
I know some of these may be ok with replacements but I dont know if I have to go higher or lower on them.
I will send you the Schematic and the links of the parts I found at Parts Express so you can see if everything is ok and I can start buying them if it is ok with you?
Also let me know how much would you charge to make both crossovers please.
Thank you very much...
Leo

[Lambo240z]

Hi Gary, thank you for the offer. I will see what comes out with Terry and after building the cabinets if he doesnt have the testing equipment I may be able to go to your place.
Thanks again for the offer.
Leo

[leadbelly]

Note that the tweeter in the HE12.1 is not a stock APT-50 but a special OEM. You will probably need to fiddle with the crossover to get it to sound right.

Here's an old thread where Dan Wiggins discusses the differences:
Adire HE 12.1

[Lambo240z]

Yes I was aware of that but I couldnt find anywhere any info on how to modify the crossover, so it will be up to listening and modifying accordingly I guess.
Thanks for the heads up anyway.
Leo

[TerryO]

Originally Posted by leadbelly

Note that the tweeter in the HE12.1 is not a stock APT-50 but a special OEM. You will probably need to fiddle with the crossover to get it to sound right.

Here's an old thread where Dan Wiggins discusses the differences:
Adire HE 12.1

Tony,

You're correct that the tweeter is a special OEM and is not the same as the stock APT-50.

Leo,

I have been on the phone and have located a pair of the special OEM versions of the APT-50 tweeters that are New-In-Box. The seller wants $20 each. Unfortunately for me, and luckily for you, I must maintain my amateur standing so there is no finder's fee, etc., although you would have to pay for the tweeters plus shipping.

I was actually able to also catch Dan Wiggins and he said he'd email me his best version of the crossover for the HE-12 this evening. I can then verify that your parts list matches up to his schematic. I'll be attending my Class Reunion, so I'll be gone until Sunday.

As far as cost, how about you pay for all the parts, some pegboard (actually I've got some), a roll of solder and a cup of decent coffee (for me!). If that sound workable, and you can hold off until Sunday or so before ordering parts, just PM me. The testing might be doable as well, but Gary Dahl's offer is generous to say the least. Gary is well known in Audio circles and is extremely knowledgeable.

Best Regards,
TerryO

[g3dahl]

(blush!)

Terry, you are too kind. Thanks!

Gary Dahl

[TerryO]

Originally Posted by g3dahl

(blush!)

Terry, you are too kind. Thanks!

Gary Dahl

I just hope my big mouth hasn't embarrassed you too much!

(BTW: Are you related to Ludwig Dahl?)

Best Regards,
Terry Olson