T&S parameters
T&S parameters of the HPD295/2528/ DU296 as supplied by Tannoy UK LTD:
TANNOY HI-FI THIELE-SMALL PARAMETERS HPD295 Tannoy Ltd., Rosehall Industrial Estate, Coatbridge, North Lanarkshire, ML5 4TF UK DRIVER TYPE: HPD295/ 2528/ DU296 DATE TESTED: -NOTES: Tannoy Ltd. The contents, information and copyright of this document are the sole property of TANNOY LTD and may not be used for commercial gain without the express knowledge and permission of the owners. Although believed accurate, no responsibility can be taken regarding the consequences of any errors or omissions. All measumements were made with the drive unit suspended in free air, with the free air resonance calculated by the added mass technique, using a 0.1 ohm current sensing resistor. All figures are ± 10%, to allow for manufacturing tolerences. PARAMETER VALUE UNITS Voice coil resistance, Re: 5,8 ohm Free air resonant frequency, fs: 26 Hz Moving mass, Mms: 34,4 gm Electrical Q, Qes: 0,26 - Mechanical & Acoustical Q, Qms: 2,2 - Total Q, Qts: 0,23 - Force factor, Bl: 11,2 N/A Total suspension compliance, Cms: 1,1 mm/N Equivalent volume compliance, Vas: 200 Litre Mechanical resistance, Rms: 2,55 Mechanical ohm Effective radiating area, Sd: 360 sq. cm Sensitivity (2.83V@1m, 20 deg. C): 91,2 dB
T&S parameters of the HPD295 as measured by: Marcello Pellerano - Chiavari (ITALY)
======================== C L I O M E A SU R E M E N T S ======================== Manufacturer: TANNOY Model: HPD295 (1) Date:03-01-2004 ___________________________________________________________________________________ FS 23.2400 Hz VAS 293.8123 L RE 5.8000 W QMS 4.5017 QES 0.2968 QTS 0.2785 Bﾗl 8.9863 Tﾗm dBSPL 92.9657 SD 0.0356 m2 CMS 1.6572 mm/N MMS 28.3006 g RMS 0.9180 WM CAS 2.10E-6 m5/N MAS 22.29 kg/m4 RAS 723 WA CMES 350.4559 mF LCES 133.8241 H RES 87.9678 W RAT 11689 WA RMT 14.8410 WM MMD 24.4935 g ZMIN 6.6157 W ZMAX 93.7678 W ZAVG 35.9891 W h0 1.1928 % L1kHz 2.8231 mH L10kHz 1.3916 mHManufacturer: TANNOY Model: HPD295 (2) Date:03-01-2004 ___________________________________________________________________________________ FS 24.8694 Hz VAS 239.5942 L RE 5.8000 W QMS 4.4282 QES 0.2746 QTS 0.2586 Bﾗl 10.0015 Tﾗm dBSPL 93.3007 SD 0.0356 m2 CMS 1.3514 mm/N MMS 30.3061 g RMS 1.0694 WM CAS 1.72E-6 m5/N MAS 23.87 kg/m4 RAS 842 WA CMES 302.9697 mF LCES 135.1791 H RES 93.5370 W RAT 14426 WA RMT 18.3160 WM MMD 26.4990 g ZMIN 6.7284 W ZMAX 99.3370 W ZAVG 35.9820 W h0 1.2885 % L1kHz 2.7795 mH L10kHz 1.3621 mH
© PE1MMK Hans Hilberink, Marcello Pellerano - Chiavari (ITALY)
last update: 03-01-2004.