Our downloadable catalogue is back! Upon request, an updated version of our downloadable catalogue is now available under technical papers or click here to start the download. The catalogue is a pdf file with a selection guide, all datasheets for our transformers and some technical papers. Enjoy! If you prefer to work online, you can [...]
One of the most popular projects among our collection of amplifier schematics is the EL34 push-pull amplifier designed and described by Claus Byrith. Based on feedback from builders of this amplifier, Claus has now written a short “Designer’s comments”. You can find the project and the comments here: https://www.lundahltransformers.com/old-fasioned-30w-push-pull-amplifier/
LL1527, one of our oldest audio transformer designs, is still in production and still very popular. Many sound engineers have a couple of LL1527 laying around to be used when problem arises. Frequently engineers tell us: “I had some hum in my system, but as soon as I installed one of your magic LL1527, the [...]
All animals are equal, but some animals are more equal than others (From Animal Farm by George Orwell) There are many XLR-XLR in-line isolation units on the market. They pretty much look the same, so what is the difference, and why should you pay substantially more for a Lundahl unit compared to units of other [...]
Customers have asked us for ”Lundahl Transformers inside” label to put on their products. Of course such requests make us very proud!!! We are therefore pleased to announce that a batch of such labels arrived today! How to get them? The labels can be requested when you order transformers from us or our distributors, and [...]
Our MC step-up family is growing! Let us introduce the three newest members: LL1961, an amorphous core low turns ratio MC SUT designed for solid state applications. LL1963, the mu metal lamination version of the 1961. LL1971, is bridging the turns ratio gap between the well-established LL1931 and LL1941.
The Australian Hi-Fi Magazine Sept. 2017 review of our Moving Coil Step-up Unit is now published on the open web. Thank you for the overwhelmingly positive report on the performance of the unit. Our ambition was to make some of the best step-up transformers on the market available for vinyl audiophiles at an affordable price. [...]
Here is a presentation of our 1660. We also like to take this opportunity to wish you a Happy Eastern! LL1660 was designed by Lars Lundahl around 1996. It is the first in our new generation of six-sectioned interstage transformers, and it has become very successful. Due to a flexible winding structure (2.25 + 2.25 [...]
When winding audio C-cores, the newly wound core-to-be needs to be press shaped for better form and for releasing it from its mandrel. We finally decided that our old, pneumatic press was not fully up to the job so we built a new, hydraulic unit. Check out the video at our Facebook page!