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Re: Hornsub shootout RESULTS - DR250 [message #28082 is a reply to message #28081]

Sat, 15 October 2005 13:36

Wayne Parham
Messages: 18704
Registered: January 2001

Illuminati (33rd Degree)

Leland Crooks brought a pair of DR250 speakers that he hoped to test. So we had a little time at the end of the day and we ran a couple sweeps.

Specifications:

Weight: 40 lbs
Dimensions: 22" x 22" x 22"
Power handling: 150wrms
Impedance: 8Ω
Frequency range: 100Hz - 16kHz
Sensitivity: 105dB/W/M
Max Output: 125dB/M
Distortion at 100 watts: 5%

DR250 Impedance

Impedance is 8Ω, so 28.28v input is 100 watts. Since we measured 10 meters away, the values correspond to both 2.83v/1M and 1W/1M.

http://prosoundshootout.com/Measurements/DR250_28v.gif

DR250response at 10 meters with 28.28v input (2.83v/1M)

The blue line is SPL, and the violet line shows distortion. Average distortion is 25dB under the fundamental, which is about 5%. Since measurement was taken at 10 meters, add 20dB to find SPL at 1 meter. With 100 watts input, the 10 meter measurement works out the same as 1 watt input measured at a distance of 1 meter.

http://prosoundshootout.com/Measurements/DR250_Impulse.gif

DR250 impulse response

http://prosoundshootout.com/Measurements/DR250_Step.gif

DR250 step response

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[Message index]

		Hornsub shootout By: Wayne Parham on Sun, 24 July 2005 20:22
		Ground Pounding Action, action, action! By: Wayne Parham on Tue, 02 August 2005 03:25
		General test plan By: Wayne Parham on Sat, 03 September 2005 23:45
		Re: General test plan By: Leland Crooks on Sun, 04 September 2005 19:19
		Re: General test plan By: Wayne Parham on Mon, 05 September 2005 03:14
		Re: General test plan By: Rory B. on Wed, 14 September 2005 07:51
		Re: General test plan By: Wayne Parham on Wed, 14 September 2005 22:00
		Re: General test plan By: Leland Crooks on Thu, 15 September 2005 07:21
		HL10 cooling plug and heat exchanger By: Wayne Parham on Fri, 16 September 2005 06:20
		Specific test plan By: Wayne Parham on Thu, 13 October 2005 17:56
		Re: Hornsub shootout By: PG on Thu, 08 September 2005 12:10
		Re: Hornsub shootout By: Wayne Parham on Fri, 09 September 2005 01:27
		Scheduled date and bad weather date By: Wayne Parham on Wed, 21 September 2005 13:21
		Re: Scheduled date and bad weather date By: jeffhtg on Tue, 27 September 2005 18:00
		Re: Scheduled date and bad weather date By: Wayne Parham on Tue, 27 September 2005 20:36
		Re: Scheduled date and bad weather date By: jeffhtg on Wed, 28 September 2005 01:43
		Re: Scheduled date and bad weather date By: Wayne Parham on Wed, 28 September 2005 11:57
		Hotels By: Wayne Parham on Wed, 21 September 2005 14:38
		Facilities and Photos By: Wayne Parham on Wed, 21 September 2005 16:17
		Re: Hornsub shootout RESULTS By: Wayne Parham on Sat, 15 October 2005 11:02
		Re: Hornsub shootout RESULTS - 12π By: Wayne Parham on Sat, 15 October 2005 13:20
		Re: Hornsub shootout RESULTS - 12π By: cred_audio on Mon, 17 October 2005 08:01
		Re: Hornsub shootout RESULTS - 12π By: Wayne Parham on Mon, 17 October 2005 09:14
		Re: Hornsub shootout RESULTS - 12π By: Josh Billings on Mon, 05 March 2007 12:32
		Re: Hornsub shootout RESULTS - 12π By: Wayne Parham on Mon, 05 March 2007 13:02
		Re: Hornsub shootout RESULTS - 12π By: Josh Billings on Mon, 09 April 2007 01:28
		Re: Hornsub shootout RESULTS - 12π By: Wayne Parham on Mon, 09 April 2007 02:06
		Re: Hornsub shootout RESULTS - Bassmaxx Z5 By: Wayne Parham on Sat, 15 October 2005 13:20
		Re: Hornsub shootout RESULTS - Bassmaxx Z5 By: Wayne Parham on Mon, 17 October 2005 10:10
		Re: Hornsub shootout RESULTS - Tuba 24 By: Wayne Parham on Sat, 15 October 2005 13:20
		Re: Hornsub shootout RESULTS - DR250 By: Wayne Parham on Sat, 15 October 2005 13:36
		Re: Hornsub shootout RESULTS - DR250 By: Leland Crooks on Sat, 15 October 2005 18:48
		Re: Hornsub shootout RESULTS - DR250 By: Wayne Parham on Sun, 16 October 2005 04:13
		Re: Hornsub shootout RESULTS - DR250 By: Timebomb on Sat, 29 October 2005 18:09
		Re: Hornsub shootout RESULTS - DR250 By: Wayne Parham on Sun, 30 October 2005 09:54
		Re: Hornsub shootout RESULTS - DR250 By: Leland Crooks on Mon, 31 October 2005 07:54
		Re: Hornsub shootout RESULTS - DR250 By: Timebomb on Tue, 08 November 2005 13:41
		Re: Hornsub shootout RESULTS - DR250 By: Leland Crooks on Tue, 08 November 2005 16:27
		Re: Hornsub shootout RESULTS - DR250 By: Timebomb on Tue, 08 November 2005 16:40
		Re: Hornsub shootout RESULTS - DR250 By: Leland Crooks on Tue, 08 November 2005 17:46
		Re: Hornsub shootout RESULTS - DR250 By: Timebomb on Tue, 08 November 2005 18:21
		Re: Hornsub shootout RESULTS By: Mike.e on Sat, 15 October 2005 22:50
		Re: Hornsub shootout RESULTS By: Wayne Parham on Sun, 16 October 2005 04:09
		My impressions By: akhilesh on Sun, 16 October 2005 13:14
		Re: My impressions By: Wayne Parham on Sun, 16 October 2005 15:46
		Re: My impressions By: akhilesh on Mon, 17 October 2005 08:35
		Re: My impressions By: Wayne Parham on Mon, 17 October 2005 09:10
		Re: My impressions By: freddyi on Mon, 17 October 2005 20:07
		Re: My impressions By: Wayne Parham on Mon, 17 October 2005 21:16
		Re: My impressions By: freddyi on Tue, 18 October 2005 07:44
		Re: My impressions By: Wayne Parham on Tue, 18 October 2005 09:06
		Re: My impressions By: freddyi on Tue, 18 October 2005 10:06
		Re: My impressions By: Wayne Parham on Tue, 18 October 2005 12:00
		Re: My impressions By: freddyi on Tue, 18 October 2005 12:30
		Re: My impressions By: Wayne Parham on Tue, 18 October 2005 12:46
		Usage of Zmin By: Mike.e on Wed, 19 October 2005 19:52
		Re: Usage of Zmin By: Wayne Parham on Thu, 20 October 2005 08:33
		Tuba30 By: PG on Tue, 18 October 2005 18:17

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