Description: Plans for a Paper "Morning-Glory" Horn for a ordinary speaker. This exponential horn will make your speaker sound twice as loud, and gives better bass response and good efficency over the entire audible range. This WWII era project was made from corrugated cardboard - another material may be used for a more permanent installation. 4' wide mouth - 36" long. This is an original 2 page magazine article from 1943. We do not photocopy these. Article Includes Measured Drawings and Diagrams Instructions 4' Horn SPEAKER 1943 How-to Build PLANS Exponential 4' Horn SPEAKER 1943 How-to Build PLANS Exponential Click image to enlarge Description Plans for a Paper "Morning-Glory" Horn for a ordinary speaker. This exponential horn will make your speaker sound twice as loud, and gives better bass response and good efficency over the entire audible range. This WWII era project was made from corrugated cardboard - another material may be used for a more permanent installation. 4' wide mouth - 36" long. This is an original 2 page magazine article from 1943. Pages measure 6 ½” x 9” We do not photocopy these. Article Includes Measured Drawings and Diagrams Instructions Payment Payment: by Paypal, Visa, Mastercard, Discover, American Express, Apple Pay, G Pay, accepted thru eBay. Items shipped upon receipt of payment. Shipping Multiple Items may be grouped to save on shipping. When buying more than one item please use the shopping cart for the best shipping price. Rates: $4.50 for USPS Ground Advantage $8.70 for priority mail service. $4.50 for Canadian shipping $6.00 other International shipping About Us Grandpa's Secrets Discover a Wealth of How-to Projects & Plans from a Bygone Era. Explore our Scientific & Mechanical History in Vintage Hobby, Craft, & Technical Magazine Articles. Get images that make Supersized seem small.Showcase your items with Auctiva's Listing Templates! THE simple solution for eBay sellers.
Price: 8.99 USD
Location: Diamond Point, New York
End Time: 2024-11-26T01:54:08.000Z
Shipping Cost: 4.5 USD
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Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
