RCF Active Sub 708-ASII 18" 1400w Powered Subwoofer DJ Disco Band PA


Powerful 18" active subwoofer, with a 1400-watt amplifier.

Vendor: RCF
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This product has been discontinued.

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Thanks to the powerful 18” woofer, with 3.0” voice coil, and the 1400-Watt amplifier, the SUB 708-AS II is the perfect tool to increase the low end performance of a portable PA system, both in terms of output and frequency extension. Thanks to the built-in digital stereo crossover (DSP) with adjustable crossover frequency it can be easily and quickly set up as a satellite speaker system. The SUB 708-AS II perfectly match 12” or 15” satellite speakers. The SUB 708-AS II is the ideal companion subwoofer the RCF ART 3, ART 7 or D-Line Series.

1400 Watt Digital Amplifier
18" Woofer, bass reflex housing
Stereo crossover
Switchable crossover frequencies
Phase-reverse switch
Electronic equalization, soft limiter and protection
Stereo XLR input, Stereo XLR signal output


Frequency Response: 35 Hz ÷ 120 Hz
Max Spl @ 1m: 133 Db
Woofer: 18'', 3.0'' V.C
Input/Output Section
Input Signal: Bal/Unbal
Input Connectors: Xlr
Output Connectors: Xlr
Input Sensitivity: -2 Dbu/+4 Dbu
Hi-Pass Frequencies: 110 Hz
Low-Pass Frequencies: 80 Hz
Protections: Thermal, Rms
Limiter: Soft Limiter
Controls: Volume, Eq, Phase, Xover
Total Power: 1400 W Peak, 700 W Rms
Low Frequencies: 1400 W Peak, 700 W Rms
Cooling: Convection
Connections: Vde
Ce Marking: Yes
Cabinet/Case Material: Baltic Birch Plywood
Handles: 2 Side
Pole Mount/Cap: Yes
Grille: Steel
Colour: Black

665 x 505 x 700 mm

39 kg

Delivery & Returns

Free Delivery

This is offered on all products regardless of order value to all mainland UK postcodes. Your purchase will be with you within 3 working days of your order being placed. If you are in the Scottish Highlands, Northern Ireland, Isle of Man and the Channel Isles you will still get free delivery but your order may take up to 5 working days to get to you.

I need my products quickly- can you help?

Absolutely! At check out you can select the option that suits you best.
We offer Next day, Saturday, Pre-10am and Pre-12pm delivery.
Unfortunately these options are not yet available for customers in the Scottish Highliands, Northern Ireland, Isle of Man and the Channel Isles.

When is the cut off for Next day delivery?

If you place your order before 2pm Monday- Friday, we will dispatch the same day.

For more information, including International delivery please click here.


Our returns department aims to help you as quickly as possible with any issues you may have with your product.

Please click here for more information on returning products.

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