Loudspeaker Data Sheet

Transcription

1 Loudspeaker Data Sheet Acoustic Line Seeburg Galeo XT 11/1/08 Audio & Acoustics Consulting Prof. Dr. Anselm Goertz ; Dr. Michael Makarski In der Linen 21, Herzogenrath-Kohlscheid ; Germany Phone: ; Fax: anselm.goertz@t-online.de

2 Acoustic Line Seeburg ; Galeo XT Page 2 of 16 Measurement equipment and conditions Class-1 semi anechoic chamber (above 100 Hz) (net dimensions: width x length x height: 6 m x 10 m x 5 m) B&K 2610 preamplifier with B&K /2 and B&K /4 condenser microphones Loudspeaker-Microphone distance: 8 m MF-Software with Robo Frontend and RME Multiface - 24-Bit/96kHz eight channel analogue/digital in/out db S/N ratio - Sweep and MLS measurements - Highest frequency resolution up to 0,01 Hz linear at 96 khz SR Crown Reference I power amplifier Stepper machine: - up to 100 kg maximum loudspeaker weight - up to1,4 m maximum diagonal loudspeaker dimension - high precision drive unit up to 1 resolution - Data acquisition in EASE, EASE-Focus, EASE Speaker-Lab GLL Ulysses UNF, CLF, SPK raw data and other formats Technical Equipment (left) and anechoic chamber (right) with stepper machine to move the speakers for balloon and polar measurements.

3 Acoustic Line Seeburg ; Galeo XT Page 3 of 16 TABLE OF CONTENTS 1. FREQUENCY RESP. HIGH PHASE RESPONSE HIGH SPECTROGRAM HIGH IMPEDANCE HIGH FREQUENCY RESP. MID PHASE RESPONSE MID SPECTROGRAM MID IMPEDANCE MID FREQUENCY RESP. LOW PHASE RESPONSE LOW SPECTROGRAM LOW IMPEDANCE HIGH FREQUENCY RESP. XT PHASE RESPONSE XT SPECTROGRAM XT MAXIMUM SPL ISOBARS (HORIZONTAL) XT ISOBARS (HORIZONTAL) XT ISOBARS (VERTICAL) XT 80 / XT ISOBARS (VERTICAL) 3XXT (0 ) ISOBARS (VERTICAL) 3XXT (3 ) ISOBARS (VERTICAL) 3XXT (7 ) EASE GENERIC LOUDSPEAKER LIBRARY DATA EASE 40 SPK SPEAKER DATA...15

4 Acoustic Line Seeburg ; Galeo XT Page 4 of Frequency Resp. High y-axis: Sensitivity [db SPL] Sensitivity calculated for 1W/1m corresponding to 2,83V eff /1m Free Field 4π conditions! No frequency smoothing! Graphics-File: HIGH-FRE.PCX 2. Phase Response High y-axis: Phase [Deg ] (group delay due to the measurement distance is eliminated for the phase plot) Graphics-File: HIGH-PHA.PCX

5 Acoustic Line Seeburg ; Galeo XT Page 5 of Spectrogram High y-axis: Time [ms] z-axis: Level [db] 4k FFT length 90% Tukey time window Graphics-File: HIGH-ZER.PCX 4. Impedance High y-axis: Impedance [Ohm] Nominal Impedance: 8 Ohm Minimum Impedance: 6,1 Ohm (more than 20% below rated impedance) Minimum of 6,1 Ohm at 4773 Hz for a rated operating frequency range from 20 Hz to 20 khz Graphics-File: HIGH-IMP.PCX

6 Acoustic Line Seeburg ; Galeo XT Page 6 of Frequency Resp. Mid y-axis: Sensitivity [db SPL] Sensitivity calculated for 1W/1m corresponding to 2,83V eff /1m Free Field 4π conditions! No frequency smoothing! Graphics-File: MID-FRE.PCX 6. Phase Response Mid y-axis: Phase [Deg ] (group delay due to the measurement distance is eliminated for the phase plot) Graphics-File: XXX-PHA.PCX

7 Acoustic Line Seeburg ; Galeo XT Page 7 of Spectrogram Mid y-axis: Time [ms] z-axis: Level [db] 4k FFT length 90% Tukey time window Graphics-File: MID-ZER.PCX 8. Impedance Mid y-axis: Impedance [Ohm] Nominal Impedance: 8 Ohm Minimum Impedance: 7,0 Ohm Minimum of 7,0 Ohm at 468 Hz for a rated operating frequency range from 20 Hz to 20 khz Graphics-File: XXX-IPA.PCX

8 Acoustic Line Seeburg ; Galeo XT Page 8 of Frequency Resp. Low y-axis: Sensitivity [db SPL] Sensitivity calculated for 1W/1m corresponding to 2,83V eff /1m Free Field 4π conditions! No frequency smoothing! Graphics-File: LOW-FRE.PCX 10. Phase Response Low y-axis: Phase [Deg ] 180 at low frequencies: 76 Hz (group delay due to the measurement distance is eliminated for the phase plot) Graphics-File: LOW-PHA.PCX

9 Acoustic Line Seeburg ; Galeo XT Page 9 of Spectrogram Low y-axis: Time [ms] z-axis: Level [db] 8k FFT length 90% Tukey time window Graphics-File: LOW-ZER.PCX 12. Impedance High y-axis: Impedance [Ohm] Nominal Impedance: 8 Ohm Minimum Impedance: 6,2 Ohm (more than 20% below rated impedance) Minimum of 6,2 Ohm at 48 Hz for a rated operating frequency range from 20 Hz to 20 khz Port Tuning Frequency: 48 Hz Graphics-File: LOW-IMP.PCX

10 Acoustic Line Seeburg ; Galeo XT Page 10 of Frequency Resp. XT y-axis: Sensitivity [db SPL] Free Field 4π conditions! No frequency smoothing! Graphics-File: GAL-RES.PCX 14. Phase Response XT y-axis: Phase [Deg ] (group delay due to the measurement distance is eliminated for the phase plot) Graphics-File: GAL-PHA.PCX

11 Acoustic Line Seeburg ; Galeo XT Page 11 of Spectrogram XT y-axis: Time [ms] z-axis: Level [db] 4k FFT length 90% Tukey time window Graphics-File: XXX-SPC.PCX 16. Maximum SPL y-axis: Max.SPL 1m red line: 3% THD 4x XT blue line: 10% THD 4x XT green line: 3% THD 1x XT light blue: 10% THD 1x XT Excitation signal: 185 ms Sinusburst 1/12 Octave steps Graphics-File: GAL-MX14.PCX

12 Acoustic Line Seeburg ; Galeo XT Page 12 of Isobars (horizontal) XT 80 y-axis: Angle [Deg ] Isobars calculated in relation to on-axis response at 0 Frequency smoothing: 1/10 octave Angle resolution: 5-6 db from yellow to light green Graphics-File: GAL-XT80-HOR.PCX 18. Isobars (horizontal) XT 120 y-axis: Angle [Deg ] Isobars calculated in relation to on-axis response at 0 Frequency smoothing: 1/3 octave Angle resolution: 5-6 db from yellow to light green Graphics-File: GAL-XT120-HOR.PCX

13 Acoustic Line Seeburg ; Galeo XT Page 13 of Isobars (vertical) XT 80 / XT 120 y-axis: Angle [Deg ] Isobars calculated in relation to on-axis response at 0 Frequency smoothing: 1/3 octave Angle resolution: 5-6 db from yellow to light green Graphics-File: GAL-XT80-VER.PCX 20. Isobars (vertical) 3xXT (0 ) y-axis: Angle [Deg ] Isobars calculated in relation to on-axis response at 0 Frequency smoothing: 1/3 octave Angle resolution: 5-6 db from yellow to light green Graphics-File: GAL-XT80-VER-3x0.PCX

14 Acoustic Line Seeburg ; Galeo XT Page 14 of Isobars (vertical) 3xXT (3 ) y-axis: Angle [Deg ] Isobars calculated in relation to on-axis response at 0 Frequency smoothing: 1/3 octave Angle resolution: 5-6 db from yellow to light green Graphics-File: GAL-XT80-VER-3x3.PCX 22. Isobars (vertical) 3xXT (7 ) y-axis: Angle [Deg ] Isobars calculated in relation to on-axis response at 0 Frequency smoothing: 1/3 octave Angle resolution: 5-6 db from yellow to light green Graphics-File: GAL-XT80-VER-3x7.PCX

15 Acoustic Line Seeburg ; Galeo XT Page 15 of EASE Generic Loudspeaker Library Data EASE Speaker Lab Generic Loudspeaker Library (GLL) Data build from MF SPK raw data. Angle Resolution: standard 5 Frequency Resolution: Phase Data: Files: File Name: Applications: raw data: 2,93 Hz at 48 khz sample rate and 16k FFT length display: 1/24 to 3/1 octave yes one EASE Generic Sound Source (GSS) file GALEO-XT-80.GSS GALEO-XT-120.GSS EASE Generic Loudspeaker Library (GLL) EASE Focus Line Array Aiming Software 24. EASE 40 SPK Speaker Data Standard EASE Speaker Base Data build from MF raw data. Angle Resolution: 5 Frequency Resolution: Phase Data: Files: 1/3 Octave yes minimum four files packed in a Zip-File: GALEO XT 80(120).FRD GALEO XT 80(120).LOB GALEO XT 80(120).PHS GALEO XT 80(120).SPK File Name: GALEO-XT-80-EASE40.ZIP GALEO-XT-120-EASE40.ZIP

16 Acoustic Line Seeburg ; Galeo XT Page 16 of 16 You will find some detailed information about the new EASE GLL data format here: