Your cart
Contact us
Close contact box
Connect ID #
079 387 331 4
Connect ID #
079 387 331 4
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

Our contact center is currently closed.

Please enter your name.  
Please enter a valid email address. Why is this required?

For Tech Support, call 1-888-292-2575

Thank you, !
Our conversation will be emailed to
Chat Advisor Image

Your Advisor,

More about me
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.


Outdoor 8-ohm to 70-volt transformer

Item # 452EW70V

This burial-rated outdoor transformer lets you convert an 8-ohm speaker for use in a 70-volt distributed audio system.

This burial-rated outdoor transformer lets you convert an 8-ohm speaker for use in a 70-volt distributed audio system.

Item # 452EW70V

In stock
$29.99 each

60-day price protection

We’ll reimburse you if the price drops.

Hands-on research

We double check the details on each item.

Need an expert?

Our Advisors know their stuff and love to help.

About the OSD EW70V

Add versatility to your outdoor speaker system

The OSD EW70V lets you convert standard in-ceiling or in-wall speakers for use in a 70-volt distributed audio system. It features an external burial-rated transformer switch with 2.5, 5, 10, 15 and 20-watt taps. The enclosure is impact-resistant ABS with clearly-marked tap settings.

Product highlights:

  • lets you convert a standard 8-ohm speaker for use in a 70-volt distributed audio system
  • selector for choosing 2.5, 5, 10, 15, and 20-watt taps
  • impact-resistant ABS enclosure
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # OSD-EW70V

What's in the box:

  • One waterproof 70V transformer with installed input & output cable seals

Customer reviews

We don't have any reviews, yet.
Submit a review and then enter to win a $350 gift card.
Be the first to review this product

Loading reviews...

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)



Crutchfield response

<< >>

More details on the OSD EW70V

Stacey B.

Product Research


Overview: The OSD-EW70V is a waterproof external 70V transformer that lets you connect "standard" 8-ohm speakers into a commercial 70V audio system. Housed in a heavy-duty ABS waterproof enclosure, the OSD-EW70V is designed for direct-burial installations.

Wire Connections: Input and output speaker wire connections are made with set-screws into brass posts, accommodating speaker wire up to 12-gauge in size. Both connections are protected with ABS cable seals for a snug, watertight connection.

70V Taps: The OSD-EW70V features a built-in 20W transformer. Tap settings can easily be adjusted from the top-mounted tap dial, using a flat-blade screwdriver. Available taps include: 2.5W, 5W, 10W, 15W, 20W, and an 8-ohm bypass selection.

Loading accessories...

Customer Q&A

Loading articles...

Compare the sound