Great shape . Maybe signs of minor dust on them .

Pair of Polk SDA 2 Passive Radiators/Fluid Coupled Subwoofers. In very Goog Condition. Frames are straight and true. Rubber surrounds are in excellent condition. Foam covered diaphragms are in good condition with a couple of scuffs as seen in the photos. PLEASE SEE PHOTOS in order to determine condition.

Great shape . Maybe signs of minor dust on them .

JBL professional amplifier 300 watts times 8 channels also 5 JBL RCA jacks for connecting to a processor or receiver with phoenix connectors!

HTD SDA-100 Subwoofer Digital Amplifier. ????????? ??????: Used. ?????????: USPS Ground Advantage.

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an Audio Review from 1984! It will have Specs, a Test of the product, and Commentary around the features and performance of the unit. Very rare and hard to find! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

Great shape . Maybe signs of minor dust on them .

For sale, a pair of black Polk Audio SDA SRS 3.1TL Speakers with grills and interconnect cable. They have the new RD0198-1 tweeters installed as well as upgraded terminals. I have used these in my rotation for the last 5 years. They performed flawlessly for me. I have reinforced the 3/4 mdf base with 3/4 oak plywood, covered the edges with oak veneer, painted black to match and installed 1/4 X 20 X 20mm inserts with adjustable glide feet. You can install carpet spikes as well. They show some nicks and such from age. Pick up only as these are almost 100 pounds a piece.

This is a reprint of an original Review from 1987. I have reviews and advertisements for hundreds of audio products on my Ebay Store! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

A full test of the classic Polk SDA-2a, An excellent test done by Julian Hirsch of Stereo Review in 1985. They really like the speaker and put it through its paces with music and lab tests. You will enjoy this literature! -This is a an exact re-print of a classic Audio Review or Brochure. -Each page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

Great shape . Maybe signs of minor dust on them .

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

Tweeters have been tested and are in good working order. Both produce nice clear sound and measure 6.4 & 7.0 ohms. They were pulled from a pair of SDA-1 speakers. Look at the pictures and feel free to ask any questions.

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This HTD SDA-100 Subwoofer Digital Amplifier is a great addition to any home audio setup. With its sleek black color and powerful capabilities, its perfect for amplifying your music or movie sound system. Its a digital amplifier that delivers crisp and clear sound, making it ideal for both music enthusiasts and home theater aficionados. Whether youre looking for a powerful amplifier to enhance your home audio experience or need a reliable device to amplify your subwoofer, this HTD SDA-100 Digital Amplifier is perfect for you. Its in great condition and has been well-maintained, ensuring that it will provide you with years of reliable performance. Get this amazing amplifier today and take your home audio to the next level!

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

Great shape . Maybe signs of minor dust on them .

Welcome to Audio/Video Archives, the largest home of audio literature available on eBay! This Advertisment is an exact reprint from 1991, it is printed on matte photo paper and is in Mint condition! The Picture is the picture of the actual item. It is a beautiful piece of Audio History. I have THOUSANDS more from every major brand of Audio from 1950 up to now. ---Satisfaction is GUARANTEED at AV Archives! Take a look at my feedback for satisfied customers! I have been open since 2007 and have sold THOUSANDS of Ads, Reviews, and Brochures to satisfied customers. ---I Ship Worldwide and combine shipping, each additional item is just $1 after the first is paid. ---Each Page is 8.5 by 11 unless otherwise noted in title. ---Single Page, Single Sided Ads, unless otherwise noted in the title. ---These Ads are perfect for framing and placed in your Audio Room. ---I have a HUGE Vinyl Record Store with Thousands of Collectable records, and MANY First Pressings/Audiophile LPs. Just click on my Vinyl Record Store link on the left under categories. Email me for any specific questions, You will hear back from me usually within 4 hours, THANK YOU! Greg Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an original Review from 1985. The SDA-SRS speaker from Polk, a RARE find and one of the best speakers EVER built! This is the complete review from Stereo Review in 1985. It is a journey into the magic of this speaker and has much information that you will love if you own these gems. It also explains the SDA concept and how it works. Satisfaction guaranteed! A piece of Audio History! This review has a full test of the product, full specs, and commentary. I have many more Polk Ads and Reviews on my Ebay Store. THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

1 (single) ORIGINAL Polk Audio Passive Woofer from SDA II. Very nice, clean condition. 12” in diameter. Removed from working unit.