--- product_id: 10997366 title: "Diaphragm for Roland KC500 KC550 Speaker D-420" brand: "simply speakers" price: "€ 32.06" currency: EUR in_stock: true reviews_count: 8 category: "Simply Speakers" url: https://www.desertcart.sk/products/10997366-diaphragm-for-roland-kc500-kc550-speaker-d-420 store_origin: SK region: Slovakia --- # Diaphragm for Roland KC500 KC550 Speaker D-420 **Brand:** simply speakers **Price:** € 32.06 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Diaphragm for Roland KC500 KC550 Speaker D-420 by simply speakers - **How much does it cost?** € 32.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/10997366-diaphragm-for-roland-kc500-kc550-speaker-d-420) ## Best For - simply speakers enthusiasts ## Why This Product - Trusted simply speakers brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Fits Roland: KC-500, KC500, KC 500, KC-550, KC550, KC 550, and many more! For Roland KC550 confirm terminals are side by side and not 180 degrees apart before ordering. Will not fit Roland KC500, KC550 models made in China with terminals on opposite sides. Review: Better than buying the entire horn which is 50 to ... - This was very simple to replace in the KC 500. Remove speaker grill, remove horn, take apart horn (4 metric screws) and lift old diaphragm out. Replace in reverse order. It works perfectly. Better than buying the entire horn which is 50 to 60 bucks. The weird thing is that just by looking at the old diaphragm I couldn't see why it failed. But it did. Heck my eyes aren't as good as they used to be anyways.... It was delivered on time as promised and saved me allot of money. desertcart Prime is wonderful! It has already paid for itself this new year. I think it is also a wonderful thing for all the freight guys like UPS, FedEx, and the like. Review: Buy six of these right now! - Fits right in and works great! A good price too. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00EEFFJ12 | | Antenna Location | For PA Systems, For Guitar Amps, For Keyboard Amps | | Audio Driver Size | 45 Millimeters | | Audio Driver Type | Dynamic Driver | | Audio Output Mode | Mono | | Best Sellers Rank | #978 in Speaker Repair Products | | Brand | Simply Speakers | | Built-In Media | Installation components, Key Cap | | Compatible Devices | Desktop, Karaoke Machine, Laptop, MP3 Player, Projector, Smartphone, Tablet, Television | | Connectivity Protocol | RCA | | Connectivity Technology | RCA | | Control Method | Voice | | Controller Type | Voice Control | | Customer Reviews | 4.0 4.0 out of 5 stars (24) | | Is Waterproof | FALSE | | Item Weight | 16 ounces | | Manufacturer | Simply Speakers | | Model Name | KC-500, KC-550 | | Model Number | 8541762496 | | Mounting Type | Flush Mount | | Number of Audio Channels | 1.0 | | Power Source | Corded Electric | | Speaker Size | 45 Millimeters | | Speaker Type | Woofer | | Specific Uses For Product | Live music performances, PA systems, Professional audio equipment | | UPC | 700621987581 | | Woofer Diameter | 45 Millimeters | ## Product Details - **Audio Output Mode:** Mono - **Brand:** Simply Speakers - **Connectivity Technology:** RCA - **Model Name:** KC-500, KC-550 - **Mounting Type:** Flush Mount ## Images ![Diaphragm for Roland KC500 KC550 Speaker D-420 - Image 1](https://m.media-amazon.com/images/I/616Ho8ZMZLL.jpg) ![Diaphragm for Roland KC500 KC550 Speaker D-420 - Image 2](https://m.media-amazon.com/images/I/614Ke-Bd69L.jpg) ![Diaphragm for Roland KC500 KC550 Speaker D-420 - Image 3](https://m.media-amazon.com/images/I/71D6IsM8MaL.jpg) ![Diaphragm for Roland KC500 KC550 Speaker D-420 - Image 4](https://m.media-amazon.com/images/I/61kQ526vP3L.jpg) ![Diaphragm for Roland KC500 KC550 Speaker D-420 - Image 5](https://m.media-amazon.com/images/I/61DZ8nleE1L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Better than buying the entire horn which is 50 to ... *by D***S on January 16, 2015* This was very simple to replace in the KC 500. Remove speaker grill, remove horn, take apart horn (4 metric screws) and lift old diaphragm out. Replace in reverse order. It works perfectly. Better than buying the entire horn which is 50 to 60 bucks. The weird thing is that just by looking at the old diaphragm I couldn't see why it failed. But it did. Heck my eyes aren't as good as they used to be anyways.... It was delivered on time as promised and saved me allot of money. Amazon Prime is wonderful! It has already paid for itself this new year. I think it is also a wonderful thing for all the freight guys like UPS, FedEx, and the like. ### ⭐⭐⭐⭐⭐ Buy six of these right now! *by A***H on August 24, 2016* Fits right in and works great! A good price too. ### ⭐⭐⭐ The worst part of this whole experience is that when I ... *by R***S on January 23, 2018* I was warned by other reviewers before I bought this replacement diaphragm that there will be some minor adjustments. I was ready for shaving the outside circle to make it fit into the smaller fitting. I was not ready to cut away the black plastic housing of the horn itself to make way for the green circuit board you see in the pic. It was quite a bit of cutting. I ended up using a dremel tool that did the work. Also the ground pin is smaller so there is some basic soldering to do. The worst part of this whole experience is that when I put it all back together the horn still did not work. Now I'm thinking crossover? Taking a break, will open everything again next week! Hope this helps! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/10997366-diaphragm-for-roland-kc500-kc550-speaker-d-420](https://www.desertcart.sk/products/10997366-diaphragm-for-roland-kc500-kc550-speaker-d-420) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-06-26*