“Not only was the little Velodyne the best small sub I’ve ever used, it was one of the very best subs I’ve used.” -John Potis SoundStage!, April 2002 HGS-15X THX Ultra 2 “The SPL-1200 was able to hit an impressively deep 16 Hz”. -Tom Noussaine Sound & Vision, June 2001 Owner's Manual “How do they get this kind of bass out of such a tiny box? Deep, tight, tuneful and loud enough to rattle pictures on the wall—this is serious subwoofing.
IMPORTANT SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Installation Worksheet Date: _____________ Model/Serial # ________________ Installed by: ____________________ Phone: _______________ Caution: To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to qualified service personnel.
IMPORTANTES CONSIGNES DE SECURITE Troubleshooting and Service ATTENTION Risque d’électrocution Ne pas ouvrir Attention: Afin d’éviter tout risque d’électrocution, ne pas enlever le boitier (ou partie arrière de l’enceinte). Aucune pièce ne doit être manipulée par l’utilisateur. Pour tout entretien, vous référer à un personnel de service qualifié.
WICHTIGE SICHERHEITSHINWEISE SPECIFICATIONS Cabinet (H/W/D) Frequency Response Harmonic Distortion Subsonic Filter High Pass Crossover Low Pass Crossover Phase Amplifier Woofer - forward firing Magnet Magnet Structure VoiceCoil Inputs Outputs Warranty Weight HGS-15X THX Ultra 2 19.75" x 18" x 17-7/8" (49 x 45 x 45 cm) 18Hz - 120Hz +/- 3 dB less than .5% 15Hzor35Hz 80Hz or 100Hz (6 dB/octave) 40Hz-120Hz (12 dB/octave initial, 48 dB/octave ultimate) 0°/180° Class D, 1250 watts RMS, 3000 watts peak 15" (12.
with a feedback signal for the servo control circuitry. This high-gain system is designed to improve linearity and reduce distortion approximately 30 times over conventional non-servo systems. While the input signal is being sent to the amplifier which powers the driver, a continuous signal representing cone motion is being sent to a comparator circuit. This circuit constantly adjusts for any deviation between the input signal and the subwoofer's output.
Product Features and Controls • 15" (12.7" piston diameter) subwoofer with tandem 3" voice coils and 220 oz.
Distortion in Loudspeakers Installation Nonlinear distortion is a problem which plagues all speakers. This particular type of distortion is a common problem in subwoofers, which must move large amounts of air to produce adequate levels of deep bass. Nonlinear distortion is defined as any form of distortion that moves energy from one portion of the audio frequency spectrum to another. When a single tone is applied to a nonlinear system, the result is harmonic distortion.
A bypass switch is also provided if you wish to use an external crossover. If you are not using an external crossover, we recommend that you use the one provided within the unit for optimum performance! Phase adjustment - 0°/180° This control allows you the "reverse" the phase of the subwoofer's output signal 180° to correct for any possible mismatch and resulting cancellation between the subwoofer and your main speakers/amplifier. To adjust, simply listen to the system with music playing.
Interconnect Cables When installing your new Velodyne subwoofer using the line level connections, you should always use shielded phono cables. There are many decent cables available today, most any of which will work perfectly well. We do recommend that you keep the length of cable as short as possible to avoid any potential noise problems. When using speaker level connections, use a decent quality speaker cable that mates well with the connectors.
Speaker-Level Connection Figure 1: Installation Using Line-Level Inputs Figure 2 shows an easy way to connect your Velodyne subwoofer directly to your receiver or integrated amplifier. When connected in this fashion, your satellite speakers will be crossed over at 80/100Hz, which removes the lower bass from your speakers, enabling them to do a better job reproducing high frequencies.
Speaker-Level Connection Figure 1: Installation Using Line-Level Inputs Figure 2 shows an easy way to connect your Velodyne subwoofer directly to your receiver or integrated amplifier. When connected in this fashion, your satellite speakers will be crossed over at 80/100Hz, which removes the lower bass from your speakers, enabling them to do a better job reproducing high frequencies.
Interconnect Cables When installing your new Velodyne subwoofer using the line level connections, you should always use shielded phono cables. There are many decent cables available today, most any of which will work perfectly well. We do recommend that you keep the length of cable as short as possible to avoid any potential noise problems. When using speaker level connections, use a decent quality speaker cable that mates well with the connectors.
A bypass switch is also provided if you wish to use an external crossover. If you are not using an external crossover, we recommend that you use the one provided within the unit for optimum performance! Phase adjustment - 0°/180° This control allows you the "reverse" the phase of the subwoofer's output signal 180° to correct for any possible mismatch and resulting cancellation between the subwoofer and your main speakers/amplifier. To adjust, simply listen to the system with music playing.
Distortion in Loudspeakers Installation Nonlinear distortion is a problem which plagues all speakers. This particular type of distortion is a common problem in subwoofers, which must move large amounts of air to produce adequate levels of deep bass. Nonlinear distortion is defined as any form of distortion that moves energy from one portion of the audio frequency spectrum to another. When a single tone is applied to a nonlinear system, the result is harmonic distortion.
Product Features and Controls • 15" (12.7" piston diameter) subwoofer with tandem 3" voice coils and 220 oz.
with a feedback signal for the servo control circuitry. This high-gain system is designed to improve linearity and reduce distortion approximately 30 times over conventional non-servo systems. While the input signal is being sent to the amplifier which powers the driver, a continuous signal representing cone motion is being sent to a comparator circuit. This circuit constantly adjusts for any deviation between the input signal and the subwoofer's output.
IMPORTANTES CONSIGNES DE SECURITE Troubleshooting and Service ATTENTION Risque d’électrocution Ne pas ouvrir Attention: Afin d’éviter tout risque d’électrocution, ne pas enlever le boitier (ou partie arrière de l’enceinte). Aucune pièce ne doit être manipulée par l’utilisateur. Pour tout entretien, vous référer à un personnel de service qualifié.
WICHTIGE SICHERHEITSHINWEISE SPECIFICATIONS Cabinet (H/W/D) Frequency Response Harmonic Distortion Subsonic Filter High Pass Crossover Low Pass Crossover Phase Amplifier Woofer - forward firing Magnet Magnet Structure VoiceCoil Inputs Outputs Warranty Weight HGS-15X THX Ultra 2 19.75" x 18" x 17-7/8" (49 x 45 x 45 cm) 18Hz - 120Hz +/- 3 dB less than .5% 15Hzor35Hz 80Hz or 100Hz (6 dB/octave) 40Hz-120Hz (12 dB/octave initial, 48 dB/octave ultimate) 0°/180° Class D, 1250 watts RMS, 3000 watts peak 15" (12.
IMPORTANT SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Installation Worksheet Date: _____________ Model/Serial # ________________ Installed by: ____________________ Phone: _______________ Caution: To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to qualified service personnel.
“Not only was the little Velodyne the best small sub I’ve ever used, it was one of the very best subs I’ve used.” -John Potis SoundStage!, April 2002 HGS-15X THX Ultra 2 “The SPL-1200 was able to hit an impressively deep 16 Hz”. -Tom Noussaine Sound & Vision, June 2001 Owner's Manual “How do they get this kind of bass out of such a tiny box? Deep, tight, tuneful and loud enough to rattle pictures on the wall—this is serious subwoofing.