AudioRoundTable.com: Pi Speakers

Home » Sponsored » Pi Speakers » My 3π adventure

Show: Today's Messages :: Navigator :: Polls
E-mail to friend

My 3π adventure [message #95260]

Fri, 18 February 2022 19:13

ppkstat
Messages: 24
Registered: February 2022

Chancellor

Well this is definitely going to be a ride.

Here's the deal: I don't know how to build speakers. These are going to be my first ones but I am a fast learner and I tend to read a lot. I am going to built them with the B&C drivers. I managed to source 2 12PLB100s which is near impossible in Europe. Price is not half bad either I should have them in a couple of weeks if everything goes well. Most difficult part to source are going to be the waveguides I should get them somehow from Wayne.

I decided to start with the part that I am most familiar with which is designing the PCBs for the crossovers. They are going to be built with Jantzen Cross-caps, Jantzen 15ga Coils and a mixture of Dayton audio and Mundorf MRs for the resistors. I don't like the idea of surface-mounting through hole components, therefore I am going to mount these regularly and then use a thick EVA sheet to mount them to the cabinet (I am thinking something like a camping mat). I am seeing a whole lot of different versions of 3pi crossovers in the forums, I guess it went through different revisions. This is the version I found on the latest 3pi plans, I just hope I got the values right.

Here is the parts layout, dimensions are in mm. I won't be posting the schematics since I don't know if that's permitted. Connectors are going to be 6.3mm gold plated spade tab terminals for the drivers and the binding posts and there's also going to be a screw terminal for the Zobell resistor. I am a bit worried about coil interference, I spaced them a bit apart and used different orientations to minimize this. I really don't know how much of an issue this will be.

/forum/index.php?t=getfile&id=3018&private=0

/forum/index.php?t=getfile&id=3018&private=0

That's all for the time being and I am sorry for my English, it's not my native language.

Attachment: crossover.jpg
(Size: 135.14KB, Downloaded 544 times)

Report message to a moderator

[Message index]

		My 3π adventure By: ppkstat on Fri, 18 February 2022 19:13
		Re: My 3π adventure By: Wayne Parham on Sat, 19 February 2022 10:45
		Re: My 3π adventure By: ppkstat on Fri, 25 February 2022 18:27
		Re: My 3π adventure By: Wayne Parham on Fri, 25 February 2022 18:52
		Re: My 3π adventure By: ppkstat on Thu, 10 March 2022 17:47
		Re: My 3π adventure By: Wayne Parham on Thu, 10 March 2022 18:52
		Re: My 3π adventure By: ppkstat on Tue, 15 March 2022 12:39
		Re: My 3π adventure By: Rusty on Tue, 15 March 2022 13:42
		Re: My 3π adventure By: ppkstat on Tue, 15 March 2022 14:16
		Re: My 3π adventure By: Rusty on Tue, 15 March 2022 14:38
		Re: My 3π adventure By: Wayne Parham on Tue, 15 March 2022 14:40
		Re: My 3π adventure By: ppkstat on Wed, 23 March 2022 11:21
		Re: My 3π adventure By: ppkstat on Thu, 24 March 2022 08:53
		Re: My 3π adventure By: Wayne Parham on Thu, 24 March 2022 09:49
		Re: My 3π adventure By: hudelson2 on Sat, 30 April 2022 13:30
		Re: My 3π adventure By: ppkstat on Sat, 30 April 2022 14:03
		Re: My 3π adventure By: Wayne Parham on Sat, 30 April 2022 16:31
		Re: My 3π adventure By: ppkstat on Sat, 30 April 2022 17:00
		Re: My 3π adventure By: ppkstat on Tue, 19 April 2022 09:16
		Re: My 3π adventure By: Wayne Parham on Tue, 19 April 2022 09:49
		Re: My 3π adventure By: ppkstat on Tue, 19 April 2022 10:06
		Re: My 3π adventure By: Wayne Parham on Wed, 20 April 2022 08:05
		Re: My 3π adventure By: ppkstat on Wed, 20 April 2022 15:47
		Re: My 3π adventure By: Wayne Parham on Wed, 20 April 2022 16:15
		Re: My 3π adventure By: ppkstat on Sat, 07 May 2022 21:02
		Re: My 3π adventure By: ppkstat on Mon, 09 May 2022 19:30
		Re: My 3π adventure By: ppkstat on Tue, 10 May 2022 14:36
		Re: My 3π adventure By: Wayne Parham on Tue, 10 May 2022 15:58
		Re: My 3π adventure By: ppkstat on Tue, 10 May 2022 16:04
		Re: My 3π adventure By: Wayne Parham on Tue, 10 May 2022 16:34
		Re: My 3π adventure By: ppkstat on Sun, 05 June 2022 06:57
		Re: My 3π adventure By: ppkstat on Wed, 22 June 2022 07:52
		Re: My 3π adventure By: Wayne Parham on Wed, 22 June 2022 11:18
		Re: My 3π adventure By: ppkstat on Thu, 23 June 2022 09:46
		Re: My 3π adventure By: Wayne Parham on Thu, 23 June 2022 10:54
		Re: My 3π adventure By: ppkstat on Fri, 24 June 2022 12:05
		Re: My 3π adventure By: Wayne Parham on Fri, 24 June 2022 12:43
		Re: My 3π adventure By: ppkstat on Fri, 24 June 2022 13:43
		Re: My 3π adventure By: Wayne Parham on Fri, 24 June 2022 14:57
		Re: My 3π adventure By: ppkstat on Fri, 24 June 2022 19:18
		Re: My 3π adventure By: Wayne Parham on Fri, 24 June 2022 20:25

Previous Topic:	port and insulation
Next Topic:	4 Pi - any "doping" suggestions to make the JBL look nicer?

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Jun 25 17:11:03 CDT 2022