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Sony RDP-CA1

Portable speaker for select Sony projection camcorders

Item # 158RDPCA1

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Our take on the Sony RDP-CA1

Got a whole roomful to impress with your first-person video blog of your African safari? Let them hear the trumpeting of elephants with louder, clearer sound by hooking up the Sony RDP-CA1 portable camcorder speaker to your compatible Sony projection camcorder. It works with camcorders featuring Sony's Active Interface shoe, which is how it connects and draws power from the camera — no need for batteries. Sound is dispersed in a 360-degree pattern, so that everyone can hear your masterpiece loud and clear. And it weighs all of 2.8 ounces, so it's as portable as your camcorder.

Product Highlights:

  • portable, internally amplified speaker is powered by your Sony PJ-Series projection camcorder
  • sound is dispersed in a 360-degree pattern so the whole room can hear
  • attached via camcorder's active interface shoe
  • supplied A/V mini jack connection cable attaches to camcorder's A/V remote jack
  • dimensions: 2-1/4" diameter; 3-7/16" height
  • weight: 2.8 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Portable camcorder speaker
  • 6.75" cable (with 3.5mm miniplug on one end and a proprietary connector on the other end)
  • Storage pouch
  • Operating Instructions
  • Warranty sheet (US)
  • Warranty sheet (Canada)
  • Installation diagram

Hands-on research

Product Research


Overview: The RDP-CA1 is a portable speaker designed for use with Sony Handycam projector camcorders. It enhances the audio so everyone can hear clearly the sound from your videos being projected from the camcorder. The speaker comes with a connecting cable and a soft storage pouch.

Speaker: The RDP-CA1 features an up-firing 30mm (1-3/16") driver, powered by a built-in amplifier. The wave guide directs the sound 360° into the room. The volume can be controlled with the side-mounted volume buttons.

Connections: The speaker mounts to the camcorder via the Active Interface Shoe, from where it receives its power. A 6-3/4" connecting cable (supplied) connects the speaker to the camcorder's A/V remote jack.

Compatibility: The RDP-CA1 is compatible with Sony Handycam projector camcorders that are equipped with the Active Interface Shoe, including the HDR-PJ580V, HDR-PJ710V, and HDR-PJ760V.


  • Speaker Type: Full-range 30mm 6Ω cone driver
  • Enclosure Type: sealed
  • Amplifier: 2 W (10% THD, 1 kHz, 6Ω)
  • Dimensions: 2.241" diameter, 3.381" height
  • Weight: 2.8 ounces

Our Product Research Team

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Staff Reviews

Product reviews from the Crutchfield Labs

A logical way to add sound

Written by Ralph Graves, Staff Writer - Creative, on 6/22/2012 9:19:00 AM

The Sony PJ-Series projection camcorders were made for video sharing. After all, instead of hunkering around a small camcorder display, you just project the image onto a large wall where everyone can see it.

It wasn't until the RDP-CA1 crossed my desk though that I realized there was a slight flaw. Everyone might be able to see the projected image, but how do you hear the sound coming out of the camcorder's tiny speaker? With the CA1, you don't have to. Although compact, this portable speaker puts out reasonably accurate sound at a good volume level. Everyone watching your video should also clearly hear the soundtrack when you have this plugged into the camcorder.

It's a logical accessory I never saw coming. But I'm glad it's here.

What are the Labs?