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VDSPRO12

 

VELLEMAN 

 

When installing the system on stage always try to install your sound system located behind the speakers to 

avoid unpleasant feedbacks. 

 

In order to have a good quality sound the system should be installed that they throw the sound over the 

audience’s head. A full range of speakers system should be installed at listeners’ eye level (see “

Legal 

Provisions

”). 

 

Always install the system in a way that there is a minimum distance of 3m between the speakers and the 

audience. 

 

9.

 

Output System Connection 

 

2 x 2-way or full-range sp 2 x 18” subwoofers. 

 

 

 

10. Cleaning and Maintenance 

 

1.  All screws should be tightened and free of corrosion. 

2.  The housing, visible parts, mounting supports and the installation location (e.g. ceiling, suspension, trussing) 

should not be deformed, modified or tampered with e.g. do not drill extra holes in mounting supports, do not 

change the location of the connections … 

3.  Moving mechanic parts must not show any signs of wear and tear. 

4.  The electric power supply cables must not show any damage. Have a qualified technician maintain the device. 

5.  Disconnect the device from the mains prior to maintenance activities. 

6.  Wipe the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents. 

7.  There are no user-serviceable parts. 

8.  Contact your dealer for spare parts if necessary. 

 

11. Technical Specifications 

 

Drivers 

Woofer 

12”, cast aluminium basket, paper cone 

Tweeter 

44mm voice coil, titanium diaphragm 

Input Power Capacity 

350W rms (continuous), 700W 

Input Connectors 

4-pole Neutrik

®

 Speakon

®

, order code 

NL4FX

 

Nominal Impedance 

8 ohms 

Box Tuning Frequency 

47Hz 

Max. Sound Pressure Level 

125dB 

Dimensions 

410 x 675 x 380mm 

Weight 

23.5kg 

 

For the SPL vs. frequency table, see the end of this manual. 

 

The information in this manual is subject to change without prior notice. 

Summary of Contents for EHQ POWER VDSPRO12

Page 1: ... Labels Please respect the prescriptions on the safety labels 4 General Guidelines Important remark the operation of an amplification system in public or industrial areas is subject to specific safety instructions Contact the proper authorities for more information Do not shake the device Avoid brute force when installing or operating the device Choose an installation spot where the device will no...

Page 2: ...ure levels he is exposed to In a discotheque average levels of 75dB to 105dB are reached At a rock concert the sound pressure levels can rise from 95dB up to 115dB Individual peaks can exceed the 130dB pain level Such levels are typical for e g motor chain saws An Overview on the Different Noise Levels 10dB Heartbeat 25dB Whisper 40dB Average home 50dB Light traffic 60dB Normal conversation 70dB V...

Page 3: ... influence the damping factor and thus the low frequencies in a negative way In order to safeguard good sound quality the damping factor should be around 50 The longer a cable the thicker it should be A damping factor of 200 is reduced to 47 8 ohms when using a diameter of 2 5mm speaker cable of 10m in length The power loss at 8 ohms is 1 63 at 4 ohms it s 3 25 and at 2 ohms it s as much as 6 5 Th...

Page 4: ...h e g do not drill extra holes in mounting supports do not change the location of the connections 3 Moving mechanic parts must not show any signs of wear and tear 4 The electric power supply cables must not show any damage Have a qualified technician maintain the device 5 Disconnect the device from the mains prior to maintenance activities 6 Wipe the device regularly with a moist lint free cloth D...

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