VINTAGE ALNICO RCA VICTOR 12 WOOFER SPEAKER 4OHM 4 OHM TESTED 961628-9 (pair). Condition is For parts or not working. Shipped with USPS Ground Advantage.

Offered for your consideration is a vintage pair of RCA MI-6234 Alnico magnet “free cone” 7 inch full-range speakers, USA-manufactured c.1943. These remarkable permanent magnet drivers were engineered in the late 1930s by Harry Olson, RCA’s head of acoustical research, with an innovative “free cone” design to enhance the low-end response of this modest-size platform. The cones are not glued to the basket flanges here. Instead, theyre freely suspended above the voice coil/spider they’re attached to, which allows low frequencies to vibrate their entire length without the reluctance of conventional suspensions. They were called rolled-edge accordion cones and their edges are protected by the multi-stacked hard paper flange gaskets. In my research for this listing, I found the MI-6234 in RCA’s Broadcast Equipment catalog from 1941. The next closest RCA period catalog I could find was from 1945, but the driver had been renamed MI-6234-A by then. So, please see my large photos and read the remaining description to decide if this rare pair of RCA free cone speakers should be yours. This pair of RCA MI-6234 speakers is in relatively clean, very good condition for being some 80 years old. Most crucially, the original ribbed paper cones are amazingly well-preserved with no cracks, holes, or even stains, just some color fading from the decades. Plus, the felt voice coil covers are perfect. In addition, the steel baskets are finished in enamel the catalogs referred to as “umber” gray and they have no dents, notable dings, or scratches, only some minor, expected chipping to the paint. Whats more, the cast iron magnet pots have thin metal plates that rusted, which darkened the paper product labels attached to them, and a small weld dot on one had gone missing at some point. I also noticed that one spider is a bit misshapen. And, the +/- input terminal spades measure the standard .205”, are marked for polarity (small paint line next to positive), and have been de-soldered for the new owner’s convenience. Most importantly, I’ve auditioned these WWII-era speakers and they are both playing nicely with clear, well-detailed midrange, pronounced treble, and adequate bass (as tested without cabinets). I did note some popping distortion, but only during heavy bass passages and at volume beyond the limitations of their 3-watt rating. Otherwise, I was surprised and delighted that speakers this old were both playing well at all. It’s a testament to RCA engineering back then, and the quality work of their employees! And even though these speakers were categorized as “full range” by 1940’s standards, the published peak is only 7kHz. I’d also seen 8kHz when four MI-6234 speakers were used in the MI-6222 cabinet, but that figure might be a catalog misprint. In those days, the conventional wisdom was that listeners preferred a ceiling of no more than 5000 cycles (5kHz), which Olson attributed to the upper-frequency distortion with 78 rpm records and AM radio broadcasting of the era. He felt that with improved source signals, listeners would welcome speaker reproduction at higher range, and he was right. Lastly, I tested the speakers’ DC resistance at a closely-matched 5.1 and 5.2?, respectively, consistent with a nominal 6 ohm published driver rating. And, the baskets measure 7” across, they stand 3?” tall, and the four-corner mount holes are spaced 4 5/16” adjacent / 6 3/16” on the diagonal apart, c-t-c. As pictured and described, this pair of RCA MI-6234 free cone, full-range Alnico 7 speakers is offered at a competitive price. Terms of Sale: I encourage interested parties to ask any questions they may have about this listing before committing to purchase as there are no cancellations, returns, refunds, or claims considered. Payment is due at checkout by PayPal or other accepted methods. U.S. mailing addresses will pay $19.95 for very carefully packed shipping via U.S. Postal Service, FedEx, or UPS with tracking, delivery confirmation, and insurance. International purchases accepted only from those who are able to pay with PayPal or other forms, including shipping by U.S. Postal Service Global Priority Air Mail. Thanks for looking!

RCA 1958 Alnico Tweeter pair Video will open in a new window Using the eBay App? Paste link into a browser window: [isdntekvideo] Capacitor Yes (Micamold)Dimension 3.5 x 3.5 x 2Frame Silver colorMake RCAMagnet AlnicoOhm 8Part # 961616-4Size 3.5 inchStamped RCATested 6.3 / 6.5 OhmsYear 1958Watts 5 to10 ( estimated for each tweeter) Up for your consideration is two 1958 RCA Alnico 3.5 inch tweeters, they are 8 ohm. https://youtu.be/gbLiQr-EiYY?si=3aaXp4jRxSmBBcox to hear them play.. Listing for tweeters only,. the amp is for demonstration only . On speaker written: 274 842274 = RCA manufacture code, 842 = Manufactured 1958. The tweeters are estimated to be 5 to 10 watts each

Removed from a 1957 RCA Tabletop Record Player. It has some minor cuts on it (see pictures) but sounds perfect. Please watch the video. Please make sure this is the speaker you need as there are no returns. Any questions please ask first.

Heres a fine RCA 5x7 oval pulled from mid 50s recorder.In that era,manufacturers were putting higher quality speakers in the then new reel to reel recorders to give them an edge over phonos and radios in similar price range.This speaker came out of a closet recorder with very little use.As always we test all audio gear we sell.NOTE: We pix other available goodies at our sites.At this one youre bidding only on described item.

Out of working RCA stereo console with tube amplifier.Nice matching pair of 3 1/2 tweeters. Made in USA in 1964-------------------------------------------------------------------------Calculated by First Class USPS S&H to any US48 Thank you.

Wharfdale Alnico Driver Super 12 Single Speaker Circa 1968. Up for sale is a single of Wharfedale Woofer Speaker 12 Driver OEM Original England Vintage Great cosmetics condition Pictures are part of the description so please see them carefully and make your own conclusion about the item’s This speaker was built into a cabinet in the early 70’s and has been there ever since hence the superb condition (see photo) Also check out my other speaker which made up the set (Wharfedale Super 12 / RS / DD full frequency range speaker circa 1966)

Description: (2) Vintage RCA AlnicoTweeters 3.5 x 2, 961616-7, 961616-5 The speakers were tested and working. They test with a multimeter at 5.0 and 6.4 ohms. The cones and baskets are both in very good condition. Please see all photos. The speakers measure 3.5 x 2 each; combined weight is 1 lb.

HERE IS A MATCHING PAIR OF VINTAGE RCA 3 1/2 ALNICO TWEETERS. THEY ARE IN PRISTINE CONDITION. THEY ARE 8 OHM SPEAKERS. RCA#961616-7. BUYER PAYS SHIPPING.

Heres a fine RCA 5x7 oval pulled from mid 50s recorder.In that era,manufacturers were putting higher quality speakers in the then new reel to reel recorders to give them an edge over phonos and radios in similar price range.This speaker came out of a closet recorder with very little use.As always we test all audio gear we sell.NOTE: We pix other available goodies at our sites.At this one youre bidding only on described item.

Heres a fine RCA 5x7 oval pulled from mid 50s recorder.In that era,manufacturers were putting higher quality speakers in the then new reel to reel recorders to give them an edge over phonos and radios in similar price range.This speaker came out of a closet recorder with very little use.As always we test all audio gear we sell.NOTE: We pix other available goodies at our sites.At this one youre bidding only on described item.

Rca Alnico 12 inch speaker 15 watt smooth cone 4 Ohm Video will open in a new window Using the eBay App? Paste link into a browser window: [isdntekvideo] Code 274 822 Frame Silver colorMake RCAMagnet AlnicoOhm 4Part # 961628-5Stamped RCAType 12Tested 4.0 OhmsYear 1958Watts 15 to 20 Up for consideration is one 12 1958 RCA stamped speaker that is high quality USA made is built to last. Pulled from a 1958 RCA Victor console. Amazing sound reminds me of a Jenson Alnico speaker. Listing for one speaker only! https://youtu.be/BS2OVydqtHw to hear it play.