---
product_id: 10448808
title: "RPST400 Replacement Diaphragm for ST400"
brand: "selenium"
price: "€ 50.37"
currency: EUR
in_stock: true
category: "Selenium"
url: https://www.desertcart.pt/products/10448808-rpst400-replacement-diaphragm-for-st400
store_origin: PT
region: Portugal
---

# Corded Electric for reliable power Flush Mount for seamless integration Dynamic Driver for crisp stereo sound RPST400 Replacement Diaphragm for ST400

**Brand:** selenium
**Price:** € 50.37
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game—don’t let your ST400 miss a beat!

## Quick Answers

- **What is this?** RPST400 Replacement Diaphragm for ST400 by selenium
- **How much does it cost?** € 50.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/10448808-rpst400-replacement-diaphragm-for-st400)

## Best For

- selenium enthusiasts

## Why This Product

- Trusted selenium brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Build:** Crafted with premium materials for long-lasting reliability in professional setups.
- • **Trusted Brand Quality:** Backed by Selenium’s legacy and a solid 4.2-star rating from audio pros.
- • **Seamless Compatibility:** Designed specifically for ST400, ensuring perfect fit and optimal performance.
- • **Precision Audio Upgrade:** Restore your ST400’s studio-quality sound with the genuine Selenium diaphragm.
- • **Plug & Play Installation:** Flush mount design and included user manual make replacement effortless.

## Overview

The Selenium RPST400 Replacement Diaphragm is a factory-original dynamic driver component designed exclusively for the ST400 monitor speaker. It offers stereo audio output with a flush mount design for easy installation, powered by corded electric connectivity. Ideal for studio monitoring, this durable diaphragm ensures precise sound reproduction and seamless compatibility, backed by Selenium’s trusted brand reputation.

## Description

JBL / Selenium – RPST400 diaphragm for a st400

## Features

- Selenium diaphragm for a st400
- Comes with factory

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00HEFB8AA |
| Antenna Location | For Surround Sound Systems, For Gaming Consoles, For Televisions |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #111,466 in Musical Instruments ( See Top 100 in Musical Instruments ) #739 in Monitor, Speaker & Subwoofer Parts #35,821 in Music Recording Equipment |
| Brand | Selenium |
| Built-In Media | Speaker cable, User manual |
| Compatible Devices | Desktop, Laptop, MP3 Player |
| Compatible with Vehicle Type | Car |
| Connectivity Technology | RCA |
| Control Method | Touch |
| Customer Package Type | Well-Protected Package |
| Customer Reviews | 4.2 4.2 out of 5 stars (11) |
| Is Waterproof | False |
| Item Weight | 22.68 g |
| Manufacturer | SELENIUM |
| Model Number | RPST400 |
| Mounting Type | Flush Mount |
| Number of Audio Channels | 2 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Series Number | 400 |
| Speaker Type | Monitor |
| Specific Uses For Product | Studio Monitoring |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** Selenium
- **Connectivity Technology:** RCA
- **Mounting Type:** Flush Mount
- **Speaker Type:** Monitor

## Images

![RPST400 Replacement Diaphragm for ST400 - Image 1](https://m.media-amazon.com/images/I/71+18g9QvlL.jpg)

## Frequently Bought Together

- Selenium RPST400 Replacement Diaphragm for ST400
- Install Link 14 Gauge Speaker Wire (Speaker Cable) for Car, Home or RV Audio Cable, 100ft, CCA

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**Shop now:** [https://www.desertcart.pt/products/10448808-rpst400-replacement-diaphragm-for-st400](https://www.desertcart.pt/products/10448808-rpst400-replacement-diaphragm-for-st400)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-04*