---
product_id: 20227239
title: "70V 10W Speaker Line Matching Transformer"
brand: "parts express"
price: "€ 11.34"
currency: EUR
in_stock: false
reviews_count: 9
url: https://www.desertcart.sk/products/20227239-70v-10w-speaker-line-matching-transformer
store_origin: SK
region: Slovakia
---

# Wide 100-12,000 Hz frequency range 70V constant voltage line matching 5 selectable power taps (0.62W-10W) 70V 10W Speaker Line Matching Transformer

**Brand:** parts express
**Price:** € 11.34
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Transform your soundscape with precision power!

## Quick Answers

- **What is this?** 70V 10W Speaker Line Matching Transformer by parts express
- **How much does it cost?** € 11.34 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/20227239-70v-10w-speaker-line-matching-transformer)

## Best For

- parts express enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Audio Integration:** Optimized for 70.7V or 25V PA amplifier lines, ensuring crystal-clear sound delivery.
- • **Dual Impedance Compatibility:** Supports 4 or 8 ohm secondary impedance, making it versatile for various speaker setups.
- • **Precision Frequency Response:** Covers a broad 100-12,000 Hz range for rich, balanced audio across all environments.
- • **Efficient & Reliable Performance:** Minimum 77% efficiency guarantees minimal energy loss and consistent sound quality.
- • **Power Flexibility at Your Fingertips:** Five distinct tap power settings let you tailor output from whisper-quiet to full volume.

## Overview

The 70V 10W Speaker Line Matching Transformer is a compact, high-efficiency device designed for professional public address systems. It supports multiple power taps and impedance options, delivering clear audio across a wide frequency range while ensuring optimal line matching for 70.7V or 25V amplifier lines.

## Description

This 70V 10W Speaker Line Matching Transformer is designed for use with public address amplifiers, supporting 70.7 volt or 25 volt carrier lines for sound transmission. It offers a frequency response range of 100-12,000 Hz and secondary impedance of 4 or 8 ohms. Capable of tapping at 0.62W, 1.25W, 2.5W, 5W, and 10W, it ensures efficient line matching in audio applications with a minimum efficiency of 77%.

Review: Good quality - Worked great for my project
Review: Good price and quality - Good quality and work great.

## Features

- Line Matching Transformer: Constant Voltage, Isolated
- Frequency Range: 100-12,000 Hz
- Secondary Impedance: 4 or 8 Ohms
- Tap Power: 0.62W, 1.25W, 2.5W, 5W, 10W
- Minimum Efficiency: 77%

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002KRA1U |
| Best Sellers Rank | #360,035 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Audio Transformers |
| Customer Reviews | 4.6 4.6 out of 5 stars (50) |
| Department | All Ages, Unisex |
| Item Weight | 9.6 ounces |
| Item model number | 300-040 |
| Manufacturer | Parts Express |
| Product Dimensions | 3.03 x 1.93 x 1.77 inches |
| UPC | 844632010170 |

## Product Details

- **Brand:** Parts Express
- **Current Rating:** 3 Amps
- **Mounting Type:** Wall Mount
- **Power Source:** Corded Electric
- **Specification Met:** UL

## Images

![70V 10W Speaker Line Matching Transformer - Image 1](https://m.media-amazon.com/images/I/81cdC2fZZNL.jpg)
![70V 10W Speaker Line Matching Transformer - Image 2](https://m.media-amazon.com/images/I/81Ta7S3wTlL.jpg)

## Questions & Answers

**Q: what is the primary coil's impedance rating?**
A: Brown to common primary will give about 10K while orange gives about 7K. Blue is around 800ohms, and I haven’t tested the rest. This was all measured by a HealthKit IT 28 which will may have around 10% error; however, those impedances have worked great for my tube amp needs. I hope this helps.

**Q: With 6 wires color coded are there instructions on what goes where?**
A: The wiring guide is printed right on the transformer. Connect the primary side to your 70V amplifier using the black primary common and whichever primary tap you want to use based on the watts you want to allocate to that speaker. Connect your speaker using the black secondary common wire plus the wire that matches the impedance of your speaker... 4, 8, or 16 ohm.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality
*by D***S on November 30, 2025*

Worked great for my project

### ⭐⭐⭐⭐⭐ Good price and quality
*by M***M on April 30, 2017*

Good quality and work great.

### ⭐⭐⭐⭐⭐ Works
*by W***A on November 27, 2018*

It work great and well marked.

## Frequently Bought Together

- Parts Express 10W Corded Electric Speaker Line Matching Transformer, 3.0 amps, 100 Hz - 12 kHz, 300-040, 0.88 lbs
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**Shop now:** [https://www.desertcart.sk/products/20227239-70v-10w-speaker-line-matching-transformer](https://www.desertcart.sk/products/20227239-70v-10w-speaker-line-matching-transformer)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-14*