RBH Sound AO-520 - Indoor/Outdoor Speaker - Pair

Sale priceRs. 18,990 Regular priceRs. 27,000

Includes GST of Rs. 2,897


Ever wondered why speakers, amplifiers, projectors etc. come with a slightly heftier price tag in India compared to their overseas counterparts? Well, part of the answer lies in our country's Goods & Services Tax (GST).

But here's the kicker: Don't let that GST input slip through your fingers! Especially when some of the products we supply carry a GST rate of 18% and 28%.

At AVStore, we provide you with a GST compliant invoice for every purchase.

Simply put in your GST number during the checkout to avail an offset.

  • Description
  • Specifications
  • Reviews


Listen to your favourite music on your patio, deck, lanai or anywhere regular speakers just won’t do. The AO-520 combines high performance audio quality with the weather resistance outdoor speakers need. Available in a black finish, the AO-520’s 5¼-inch poly-graphite woofer and 1-inch mylar tweeter stylishly belt out the tunes from a discrete position. The AO-520s can be easily tucked under eaves or in the corner to provide big sound. If you’re seeking great outdoor performance from a stylish small speaker, the AO-520 is the best solution.


The cabinet of the AO-520 and AO-620 outdoor speaker is constructed of impact resistant fortified ABS which is sealed to provide resistance from the natural elements of the weather.

The angled cabinet back is designed for easy placement into a corner. All hardware parts are made from brass, aluminium or stainless steel and the binding posts are plastic to avoid corrosion.

For high frequencies, a 1-inch mylar dome tweeter is used. This tweeter uses Ferro FluidTM liquid cooling to allow greater power handling. A long throw 51⁄4 or 61⁄2-inch poly graphite woofer with a butyl rubber surround is used for midrange and bass reproduction. Steep acoustic slope crossovers are used to integrate drivers.

The use of steep crossover slopes allows high power handling, minimises driver interaction anomalies, and maximises the clarity with which each driver is able to produce its respective frequency band.

The bracket allows the speaker to be hung either horizontally or vertically, and can be mounted several different ways and swivels for optimum placement.


  • A - The AO-520 speaker can be mounted either horizontally or vertically. Hold the bracket against the mounting surface, so you can mark the locations of the mounting holes, and the wire hole (see the Parts Guide on page 1).
  • B - Drill corresponding pilot holes for the included mounting screws or nails (not included), and a hole large enough for speaker wire to pass through.
  • C - Pull speaker wire through the hole and through the bracket, aligning the bracket with the holes.
  • D - Use hardware to attach the bracket to the mounting surface.
  • E - Use the bracket knobs to attach the speaker to the bracket, being careful to not tighten the knobs; this will allow the speaker to be angled slightly so the rear binding posts are accessible.
  • F - Connect one wire to the black terminal and one to the red terminal, paying close attention to the markings on the wires for proper polarity. Each speaker must be connected to the amplifier in the same way.
  • G - Adjust the speaker for desired position and tighten the bracket knobs.


The distance from the listening position to each speaker should be close to the distance that separates the two main speakers. Angling the speakers inward towards the listening position may give a more spacious and realistic sound stage.

Placing the speakers in a corner or under an eave will provide reinforcement for the bass frequencies, resulting in higher bass output. Placing the speakers away from any corners or walls will provide the least amount of reinforcement, resulting in lower bass output.


We recommend an amplifier with an output power rating of 25-100 watts per channel. This will help to protect the speaker from being under or over driven, which could cause permanent damage.

When listening to the speakers outdoors, keep in mind that there are very few walls to reinforce the sound. Therefore, be careful not to drive the speakers beyond what they are capable when trying to obtain a desired volume level. You will be able to determine audibly when the speaker is being over driven by the “break-up” or distortion that is coming from the speaker.

System Type

2-way Indoor/Outdoor Speaker

Frequency Response

60Hz-20kHz (±3dB)


88dB (2.83V @ 1 Meter)

Recommended Power

10-80 Watts

Drive Units

(1) 5-1/4" (133mm) Poly Graphite Cone Woofer


(1) 1" (25mm) Mylar Dome Tweeter

Swivel Tweeter(s)


Tweeter Protection

No (Do not over-drive these speakers, they sound great at low to moderate volume levels in outdoor environments)

Crossover Frequency

2,500 Hz

Crossover Slope



8 Ohms


Fortified Black ABS (Includes Styled End Caps)


Black Aluminum Micro-perforated

Finished Dimensions

7-1/2" W x 9-3/4" H x 6-1/2" D (190mm W x 247mm H x 165mm D)


5 lbs. (2.26 kg)