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Re: Apple with one worm+apple with two worms [message #17171 is a reply to message #17170]

Sun, 07 November 2004 08:00

adavis464
Messages: 64
Registered: May 2009

Viscount

I used a swan 305(1994) in a 4cuft vented box 91db 1watt1meter f3 28hz.In a bandpass I used 2 in a compound setup to reduce size by half with a passive radiator (box is to small to use vents).With the system un-tuned It measured 98db 65Hz to 400Hz once tuned it was 85db from 20Hz to 100Hz.The effiency dropped and the bandwidth narrowed but that was what the original callculations pedicted but the effiency was about 3db less than predicted.(All calculation were done using KEF's AES paper)When tuning we also stopped at 28Hz it was 88db and it only worked well to about 300Hz.They sound similer to a transmition line.Thats just my experence.Regards Tim

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[Message index]

		Bandpass subs By: Ralph on Thu, 04 November 2004 15:27
		Re: Bandpass subs By: blades976 on Thu, 04 November 2004 20:45
		Re: Bandpass subs By: Ralph on Fri, 05 November 2004 12:48
		Re: Bandpass subs By: Bill Fitzmaurice on Sun, 07 November 2004 15:44
		Re: Bandpass subs By: Earl Geddes on Sat, 08 January 2005 13:36
		Tuning? By: adavis464 on Fri, 05 November 2004 14:56
		Re: Tuning? By: blades976 on Fri, 05 November 2004 22:41
		Re: Tuning? By: Wayne Parham on Sat, 06 November 2004 00:22
		What's the point By: adavis464 on Sat, 06 November 2004 09:09
		Increased output and small size By: Wayne Parham on Sat, 06 November 2004 11:28
		Re: Increased output and small size By: Earl Geddes on Sun, 09 January 2005 14:00
		Re: Tuning? By: adavis464 on Sat, 06 November 2004 08:16
		They are very easy to tune By: adavis464 on Fri, 05 November 2004 07:23
		Re: They are very easy to tune By: Ralph on Fri, 05 November 2004 12:44
		All of them that I built By: adavis464 on Fri, 05 November 2004 14:48
		Resonance By: Mike.e on Sun, 07 November 2004 02:04
		Re: Resonance By: Wayne Parham on Sun, 07 November 2004 03:07
		Apple+apple By: Mike.e on Sun, 07 November 2004 04:04
		Re: Apple with one worm+apple with two worms By: adavis464 on Sun, 07 November 2004 08:00
		Congratulations! You've made the 25,000th post! By: daemon on Sun, 07 November 2004 09:11
		Re: Apple with one worm+apple with two worms By: Mike.e on Sun, 07 November 2004 16:58
		Thanks Mike By: adavis464 on Sun, 07 November 2004 19:36
		Re: Resonance By: Tom Danley on Sun, 07 November 2004 17:33
		Re: Resonance By: Mike.e on Sun, 07 November 2004 18:46
		Re: Resonance By: Wayne Parham on Wed, 29 December 2004 14:16
		Re: Resonance By: Mike.e on Wed, 29 December 2004 17:37
		Re: Resonance By: Wayne Parham on Wed, 29 December 2004 18:28
		Re: Resonance By: Mike.e on Tue, 04 January 2005 01:41
		Re: Resonance By: Wayne Parham on Tue, 04 January 2005 16:00
		Re: Resonance By: Mike.e on Thu, 06 January 2005 00:05
		Re: Resonance By: Wayne Parham on Thu, 06 January 2005 00:28
		if you look at the pros and cons By: Mike.e on Thu, 06 January 2005 08:18
		Re: Resonance By: Wayne Parham on Sun, 07 November 2004 19:31
		Re: Bandpass subs By: Bill Wassilak on Fri, 05 November 2004 14:12
		THis is not the point of the original post By: akhilesh on Sat, 06 November 2004 11:26
		I'm using one... By: mollecon on Sun, 07 November 2004 21:29
		Re: I'm using one... By: Mike.e on Wed, 17 November 2004 02:25
		Re: I'm using one... By: mollecon on Wed, 17 November 2004 02:53
		Re: Bandpass subs By: Earl Geddes on Thu, 23 December 2004 21:15
		Re: Bandpass subs By: Wayne Parham on Fri, 24 December 2004 12:03
		Re: Bandpass subs By: Earl Geddes on Fri, 24 December 2004 14:35
		Re: Bandpass subs By: Wayne Parham on Sat, 25 December 2004 07:54

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