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Re: 7Pi Build 2014 [message #80646 is a reply to message #80645]

Mon, 06 October 2014 15:24

Wayne Parham
Messages: 18682
Registered: January 2001

Illuminati (33rd Degree)

Well, that's probably true. It's a simple circuit and you can easily troubleshoot it there. I just didn't want to see you get stuck, so the deal always stands.

One thing you might do is to put a single series capacitor inline with the compression driver instead of using the crossover. Run the woofer and midrange directly off the amp, and the tweeter having just a series cap, value in the 5-10uF range.

What you would see when measuring that is the midhorn would be about 6dB hotter than the bass and the tweeter would be another 3dB hotter than that. So this would let you see the tweeter output, and would help isolate that huge rolloff.

If you see this - and I expect you would - then you could trace the signal through the tweeter circuit. It's pretty simple, with the signal going first through the 6.8uF capacitor and then shunted by the 1.0mH coil, passing then through the 20uF capacitor and onto the R1/R2 padding network. My guess is either somewhere the signal is shorted, possibly by one of the leads under a coil where it is siliconed to the board, or one of the series components is misconnected. It pretty much has to be one of those things, because there just isn't that much in the signal path.

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[Message index]

		7Pi Build 2014 By: compaddict on Fri, 20 June 2014 17:54
		Re: 7Pi Build 2014 By: compaddict on Fri, 20 June 2014 17:55
		Re: 7Pi Build 2014 By: compaddict on Fri, 20 June 2014 17:56
		Re: 7Pi Build 2014 By: compaddict on Fri, 20 June 2014 23:13
		Re: 7Pi Build 2014 By: compaddict on Tue, 24 June 2014 14:46
		Re: 7Pi Build 2014 By: Wayne Parham on Tue, 24 June 2014 15:46
		Re: 7Pi Build 2014 By: compaddict on Thu, 24 July 2014 15:25
		Re: 7Pi Build 2014 By: petew on Thu, 24 July 2014 19:51
		Re: 7Pi Build 2014 By: compaddict on Fri, 25 July 2014 13:47
		Re: 7Pi Build 2014 By: compaddict on Fri, 01 August 2014 15:56
		Re: 7Pi Build 2014 By: compaddict on Sat, 09 August 2014 22:10
		Re: 7Pi Build 2014 By: compaddict on Sun, 10 August 2014 16:36
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 11 August 2014 08:02
		Re: 7Pi Build 2014 By: compaddict on Tue, 26 August 2014 18:20
		Re: 7Pi Build 2014 By: compaddict on Fri, 29 August 2014 17:27
		Re: 7Pi Build 2014 By: Wayne Parham on Fri, 29 August 2014 19:54
		Re: 7Pi Build 2014 By: compaddict on Mon, 01 September 2014 14:01
		Re: 7Pi Build 2014 By: compaddict on Mon, 01 September 2014 21:44
		Re: 7Pi Build 2014 By: Wayne Parham on Tue, 02 September 2014 00:00
		Re: 7Pi Build 2014 By: compaddict on Fri, 05 September 2014 17:56
		Re: 7Pi Build 2014 By: blvdre on Sat, 06 September 2014 06:30
		Re: 7Pi Build 2014 By: petew on Sat, 06 September 2014 11:14
		Re: 7Pi Build 2014 By: compaddict on Sat, 06 September 2014 15:12
		Re: 7Pi Build 2014 By: compaddict on Sun, 07 September 2014 15:39
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 08 September 2014 10:22
		Re: 7Pi Build 2014 By: compaddict on Mon, 08 September 2014 19:21
		Re: 7Pi Build 2014 By: compaddict on Tue, 09 September 2014 23:19
		Re: 7Pi Build 2014 By: Wayne Parham on Wed, 10 September 2014 15:31
		Re: 7Pi Build 2014 By: compaddict on Thu, 11 September 2014 17:23
		Re: 7Pi Build 2014 By: compaddict on Fri, 12 September 2014 09:59
		Re: 7Pi Build 2014 By: rkeman on Fri, 12 September 2014 15:02
		Re: 7Pi Build 2014 By: compaddict on Fri, 12 September 2014 15:10
		Re: 7Pi Build 2014 By: compaddict on Fri, 12 September 2014 17:11
		Re: 7Pi Build 2014 By: compaddict on Sat, 13 September 2014 12:52
		Re: 7Pi Build 2014 By: my0x on Sat, 13 September 2014 19:34
		Re: 7Pi Build 2014 By: tubemax on Sun, 14 September 2014 04:03
		Re: 7Pi Build 2014 By: tubemax on Sun, 14 September 2014 04:42
		Re: 7Pi Build 2014 By: tubemax on Sun, 14 September 2014 05:27
		Re: 7Pi Build 2014 By: Wayne Parham on Sun, 14 September 2014 10:38
		Re: 7Pi Build 2014 By: compaddict on Sun, 14 September 2014 11:15
		Re: 7Pi Build 2014 By: Wayne Parham on Sun, 14 September 2014 19:16
		Re: 7Pi Build 2014 By: compaddict on Sun, 14 September 2014 19:22
		Re: 7Pi Build 2014 By: compaddict on Sun, 14 September 2014 21:30
		Re: 7Pi Build 2014 By: Wayne Parham on Sun, 14 September 2014 22:20
		Re: 7Pi Build 2014 By: compaddict on Sun, 14 September 2014 23:43
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 15 September 2014 08:10
		Re: 7Pi Build 2014 By: compaddict on Mon, 15 September 2014 10:54
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 15 September 2014 12:02
		Re: 7Pi Build 2014 By: compaddict on Mon, 15 September 2014 12:29
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 15 September 2014 16:23
		Re: 7Pi Build 2014 By: compaddict on Wed, 17 September 2014 00:06
		Re: 7Pi Build 2014 By: Wayne Parham on Wed, 17 September 2014 07:14
		Re: 7Pi Build 2014 By: compaddict on Wed, 17 September 2014 08:32
		Re: 7Pi Build 2014 By: Wayne Parham on Wed, 17 September 2014 10:23
		Re: 7Pi Build 2014 By: compaddict on Wed, 17 September 2014 10:44
		Re: 7Pi Build 2014 By: tom-m on Wed, 17 September 2014 14:45
		Re: 7Pi Build 2014 By: Wayne Parham on Wed, 17 September 2014 16:12
		Re: 7Pi Build 2014 By: compaddict on Sun, 28 September 2014 11:37
		Re: 7Pi Build 2014 By: rkeman on Sun, 28 September 2014 12:11
		Re: 7Pi Build 2014 By: compaddict on Sat, 04 October 2014 10:22
		Re: 7Pi Build 2014 By: skywave-rider on Sat, 04 October 2014 13:52
		Re: 7Pi Build 2014 By: compaddict on Sat, 04 October 2014 14:15
		Re: 7Pi Build 2014 By: Wayne Parham on Sun, 05 October 2014 08:51
		Re: 7Pi Build 2014 By: compaddict on Sun, 05 October 2014 10:53
		Re: 7Pi Build 2014 By: compaddict on Sun, 05 October 2014 16:52
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 08:37
		Re: 7Pi Build 2014 By: compaddict on Mon, 06 October 2014 12:12
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 14:00
		Re: 7Pi Build 2014 By: JCDC on Mon, 06 October 2014 14:01
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 14:09
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 14:30
		Re: 7Pi Build 2014 By: my0x on Mon, 06 October 2014 14:46
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 14:47
		Re: 7Pi Build 2014 By: compaddict on Mon, 06 October 2014 14:54
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 15:00
		Re: 7Pi Build 2014 By: compaddict on Mon, 06 October 2014 15:13
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 15:24
		Re: 7Pi Build 2014 By: compaddict on Mon, 06 October 2014 15:38
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 06 October 2014 16:17
		Re: 7Pi Build 2014 By: compaddict on Mon, 06 October 2014 16:32
		Re: 7Pi Build 2014 By: Wayne Parham on Tue, 07 October 2014 08:18
		Re: 7Pi Build 2014 By: compaddict on Tue, 07 October 2014 12:21
		Re: 7Pi Build 2014 By: Wayne Parham on Tue, 07 October 2014 14:08
		Re: 7Pi Build 2014 By: compaddict on Thu, 09 October 2014 19:09
		Re: 7Pi Build 2014 By: compaddict on Thu, 16 October 2014 14:53
		Re: 7Pi Build 2014 By: Wayne Parham on Thu, 16 October 2014 16:21
		Re: 7Pi Build 2014 By: compaddict on Sun, 19 October 2014 18:14
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 20 October 2014 09:28
		Re: 7Pi Build 2014 By: Nelson Bass on Tue, 21 October 2014 01:04
		Re: 7Pi Build 2014 By: Wayne Parham on Tue, 21 October 2014 07:50
		Re: 7Pi Build 2014 By: compaddict on Wed, 05 November 2014 10:42
		Re: 7Pi Build 2014 By: Wayne Parham on Sat, 08 November 2014 10:07
		Re: 7Pi Build 2014 By: Nelson Bass on Wed, 12 November 2014 15:57
		Re: 7Pi Build 2014 By: compaddict on Wed, 12 November 2014 16:07
		Re: 7Pi Build 2014 By: blvdre on Sat, 15 November 2014 14:25
		Re: 7Pi Build 2014 By: compaddict on Sun, 16 November 2014 14:50
		Re: 7Pi Build 2014 By: compaddict on Thu, 20 November 2014 23:45
		Re: 7Pi Build 2014 By: compaddict on Mon, 01 December 2014 12:35
		Re: 7Pi Build 2014 By: Wayne Parham on Mon, 01 December 2014 13:54
		Re: 7Pi Build 2014 By: compaddict on Fri, 10 June 2016 13:30
		Re: 7Pi Build 2014 By: Wayne Parham on Fri, 10 June 2016 17:19
		Re: 7Pi Build 2014 By: compaddict on Sat, 08 December 2018 10:22
		Re: 7Pi Build 2014 By: Wayne Parham on Sun, 09 December 2018 10:28

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