Lundahl transformer Effective immediately, please contact Holger Schaarsmidt Audio Output Transformer LL1517 LL1517 is an audio output transformer for balanced or unbalanced drive. International . The same way as an audio ground loop We have been working hard to eliminate mains transformer buzz generated in the windings and isolation material. se DIN-PCB-1527 Our new DIN-PCB was designed for LL1527 in a 1:1 Tube Amplifier Output Transformers LL1679 LL1679 is an output transformer for tube amplifiers, available with different core air-gaps for different types of output LUNDAHL Microphone Input Transformer LL1528 LL1528 is a microphone input transformers built up from two coils, each with one primary and one secondary section separated by a electrostatic The standard kit now employs the new Lundahl LL9226 for improved sound. LUNDAHL LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930 SWEDEN Fax +46 - 176 13935 0176-13935 LL1531 (top Lundahl Transformers has a new CEO Maria Berghäll april 25, 2024 Meet Helena PantzareWe are thrilled to welcome Helena Pantzare as the new CEO of Lundahl LL1664 Lundahl Output Transformer; LL1664 Lundahl Output Transformer. With options for mic input at 200:200 or 200:800 Ω, the LL1527 is designed to elevate your audio projects to the next A significant difference between Lundahl Transformers and other transformer manufacturing companies is that in addition to controlling the entire manufacturing process (including C Tube Amplifier Output Transformers LL1679 LL1679 is an output transformer for tube amplifiers, available with different core air-gaps for different types of output LUNDAHL Many famous brands use Tango, Tamura, Hashimoto or Lundahl transformers on their amplifiers and not without good reason. The transformer is designed for high end audio applications such as tube amplifier line input The transformer is wound with a special low capacitance winding technique to achieve best high frequency performance. Read More LL2785C februari 24, 2023 Our new mains transformer LL2792 is specifically designed for 300B tube amplifiers. 5 mm holes for M4 During the last year Lundahl Transformers have developed a new line of Single-End to Single-End 1:1 interstage transformers. Typical applications would be galvanic isolation or balanced-to-unbalanced conversion. In After 20+ years as the US distributor of Lundahl transformers, I have decided to retire to focus my time on enjoying life with my family. 28 Usage: In+ pin 1 (left row, bottom pin when viewed from Several pairs of Lundahl transformers later, Kevin sought and was granted the opportunity to distribute Lundahl Transformers in the United States, which was the beginning of K&K Audio. com Dual (Consumer or Our old LL1545A is an excellent sounding line input transformer used in both pro audio and audiophile applications. Amorphous Core. The transformer is built up LUNDAHL. SWEDEN . Price: £91 £109. The core is assembled with a small air-gap to compensate for any mains DC- LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930 SWEDEN Fax +46 - 176 13935 0176-13935 11 8 4 11 13 Lundahl Transformers is a well known brand in the audio world. Contact Us. Custom air gap. 3 dB Core: Mu-metal LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Lundahl moving coil LL1931 step up transformer. com Push-Pull Tube Amplifier Tube Amplifier Output Transformer LL2768 The LL2768 is a high power tube output transformer primarily for low impedance high power tubes. The transformer is built from two three-section coils, with Lundahl transformers was founded in 1959 by Lars and Gunnel Lundahl, and is located in the big town of Norrtalje, in the Stockholm region. The LL9226XL is of course very AB LARS LUNDAHL Tibeliusgatan 7 Phone: Int +46-176 139 30 Fax: Int +46-176 139 35 S-761 50 NORRTÄLJE Nat 0176-139 30 Nat 0176-139 35 SWEDEN Winding arrangements of output General Purpose Transformers LL1527 and LL1527XL LL1527 is a truly general purpose transformer for microphone or line input, for output, for splitting 1 direct + 1 isolated General purpose audio transformers Applications:•Splitting•Galvanic isolation•Balanced-unbalanced conversion Properties:Flexible, with many different connection alternatives Ribbon mic transformer LL2912 added to our webshop! Posted on januari 30, 2017; The LL2912, which has become the premium alternative for upgrading ribbon microphones, is now available The LL1521B is a high impedance line input transformer, very similar to the LL1540 but with a slight stepup. 100mA. Lundahl LL1931 moving coil stepup transformer Description: Surfing the web I discovered that Ortofon had designed a new Moving Coil stepup LL3802 is a ”600 : 600 ohm” general purpose isolation transformer, turns ration 2:1+1 Core: Mu metal, ED style. The laminated mu metal core is the most classic and commonly used core material. Premium quality transformers for all applications in audio | We make premium quality transformers for all applications in audio. Fax +46 - 176 13935 . Zur Navigation springen. This transformer is a rethinking of the already very good LL9206, incorporating what was learned in the Transformer connected 1:13, source 40 , load 47 k secondary level 0 dBU 7Hz – 55 kHz +/- 1dB Isolation between primary and secondary windings/ between windings and shield: 4 kV / 2 kV High Level Audio Output Transformer LL1585 LL1585 is a high level audio line output transformer for balanced or unbalanced drive. S-761 50 NORRTÄLJE . It provides Line input audio transformers Line input transformers are used to protect audio line inputs in studioand live equipment from picking up external noise, caused by,for instance, ground loops Lundahl Transformers AB has more than 65 years of successful operations and a strong market position. LUNDAHL TRANSFORMERS Mains Transformers for Tube Amplifiers LL1665 230V : 530V + 530V + (4 x 6. The LL1545A is an excellent sounding line input transformer used in both pro audio and audiophile applications. Orso Audio is a new Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahl. 28 Usage: In+ pin 1 (left row, bottom pin when viewed from Lundahl Transformers, Norrtälje. Push Pull. LUNDAHL Transformers for digital audio: Isolation, impedance matching and splitting. M´´ and Alt. It has low copper resistance, mixed feedback design principles and high balance and Various PCB's for a range of Lundahl Transformers to make wiring to them easier! LL1679 is an output transformer for tube amplifiers, available with different core air-gaps for different types of output stages. VAT / Quantity: Add to cart . 20 Inc. The PCB can be used in combination Per Lundahl is a multitalented designer who runs one of world’s leading high-performance audio transformer manufacturing outfits, Lundahl Transformers, which is based in Norrtalje, Sweden. Usage 1:1 in+ 7 in- 9 out+ 1 out- 5 connect 2 + 4 Faraday shield 10 + 6 Usage Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahl. 5 10 80 20 ; LL1638_housing footprint. The 350V secondaries can be used with full wave or with bridge rectifiers. Lundahl Transformers is one of the world´s leading manufacturer of high performance audio transformers. 6V) C-core mains transformers. Topology: 50mA. It has a special high flux, low distortion audio C-core of our own Tube Amplifier Output Transformer LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930 SWEDEN Fax +46 - 176 LL1591 is a low cost audio isolation transformer, pin compatible with e. Some well known companies using Lundahl transformers are: Manley, VAC, SPL, Sound The LL1521B is a high impedance line input transformer, very similar to the LL1540 but with a slight stepup. Orso Audio are an official distributor for Lundahl transformers in the UK, in particular for DIY HIFI valve amplifiers. com, www. se High level transformer unit DIN1588 DIN1588 is a high level ready-to-use Ribbon mic transformer LL2912 added to our webshop! Posted on januari 30, 2017; The LL2912, which has become the premium alternative for upgrading ribbon microphones, is now available Our old LL1545A is an excellent sounding line input transformer used in both pro audio and audiophile applications. It is available in 18dB and 24dB gain (LL1933) or 24dB and 30dB gain (LL1943). Amorphous. com Dual (Consumer or Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahl. Variant. The objective is to provide the best Transformer DIN unit The purpose of the DIN unit set is to provide housing and a pre-printed PCB for easy mounting of a selected range of Lundahl transformers, in particular for splitting and line isolation. By applying some tricks when winding the coils, the capacitive coupling between LUNDAHL Tibeliusgatan 7 . Domestic . LL1527 and LL1581XL. LUNDAHL TRANSFORMERS LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930 SWEDEN Fax +46 - 176 13935 0176-13935 3 4 5 7 1 18 Tube Amplifier Interstage Transformer / Line Output Transformer LL1660 Connection Alternatives Alt. The Amorphous Ribbon Microphone Transformer LL2913 LL2913 is identical to our ribbon microphone transformer LL2911, but (for manufacturing reasons) with LUNDAHL TRANSFORMERS Tibeliusgatan 7 Many famous brands use Tango, Tamura, Hashimoto or Lundahl transformers on their amplifiers and not without good reason. About this cataloge The purpose of this catalogue is to provide a downloadable and printable collection of data sheets for our wide range of audio transformers. Success Thank you for your message, The Cardas Wire option uses either the LL1933 or LL1943 Lundahl transformer, depending on your gain requirements. Version: Push Pull. LL1638_HOUSING . Our open end winding technique (with insulation between each layer of copper wire within a transformer section) is Mains Transformers for Tube Preamplifiers LL2758 C-core mains transformer, assembled with a small core air-gap to compensate for any mains DC-unbalance. When assembled, the transformer is Lundahl Transformers Sale! We have quite a few transformers on hand which we purchased from K&K Audio, the former Lundahl North American distributor. However, for most users the LL1545A is more flexible than needed Lundahl Transformers AB | 372 followers on LinkedIn. It is probably one of the highest performance-per-dollar MC Amorphous Core Moving Coil Input Transformer LL1971 LL1971 is a high performance moving coil step-up transformer. This transformer is a rethinking of the already very good LL9206, incorporating what was learned in the The LL1521B is a high impedance line input transformer, very similar to the LL1540 but with a slight stepup. 0 with the D/A Converter N°3 board by ARMONIA Hi-Fi and Lundahl LL1636 transformers; An 845 single end amplifier using LL1620/90mA, LL1671/50mA and LL1667/5mA. 2,604 likes · 1 talking about this · 12 were here. Despite the young age, the LL9226XL is a big sister to the LL9206 and the LL9226. Audio Note. Our The transformer is built from two three-section coils, with primaries and secondaries separated by electrostatic shields, and a audio C-core of our own production. After graduating from the LL1623 is a tube amplifier output transformer from Lundahl Tube Amplifier Transformers line, with special winding and core construction perfectly suitable for high quality Microphone Input Transformer LL7903 The LL7903 is a large, high level, high performance audio transformer, made for extraordinary requirements. Breadcrumb: Start > The transformer is wound with a special low capacitance winding technique to achieve best high frequency performance. Estimated power LUNDAHL This small PCB is designed for some common applications using a few of our pin compatible transformer models. com Line input transformer Chokes, mostly used in tube amplifiers We have a wide range of chokes and inductors for tube amplifiers, ranging from anode choke LL1667 (operating current from 5 mA) to filament current 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 brands? When audio input transformers are This means that we can now offer nanocrystalline core versions of our transformers LL1660, LL1667, LL1668, LL1671, LL1689, LL1692A, LL2745 and some more of LUNDAHL Tibeliusgatan 7 . The finest transformer for high ohms guitar pickup output impedances to Tube Amplifier Interstage Transformer / Line Output Transformer LL1660 Connection Alternatives Alt. If you want to make the best amplifier possible, these are the transformers to use. M´´ (new!) Line Output Transformer LL2745 LL2745 is a line output transformer for tube amplifiers. The transformer is built from two three-section coils, with LUNDAHL TRANSFORMERS SWEDEN DI Transformer LL1935 . 18mA. The transformers are named: LL1931Ag (1+1 : 8+8, amorphous Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahltransformers. lundahltransformers. Sound Transformers can be used as an alternative to electronic balancing stages in Tube amplifier output transformer LL1691D 10k : 4, 16 ohms (for 845 and similar tubes) The LL1691D is a dual-coil single-C-core tube amplifier output transformer for 10k : 4, 16 ohms Video Isolation Transformer LL1575 LL1575 is a high bandwidth video isolation transformer for CCTV (closed circuit television). Phone +46 - 176 13930 . For mounting, drill 4 x 4. 7k : 5 and 4. Housing for LL1638 and Signal Splitting: Get 1 direct + 1 isolated output for versatile connectivity. It also includes some of our technical papers of more general interest. But the core hum/vibration, caused by so called magnetostriction is not Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahl. Success Thank you for your message, Chokes, mostly used in tube amplifiers We have a wide range of chokes and inductors for tube amplifiers, ranging from anode choke LL1667 (operating current from 5 mA) to filament current Lundahl Transformers AB has more than 65 years of successful operations and a strong market position. When conventional design practice is applied to this type of transformers you easily get Loss across transformer (at 1 kHz with termination as above): 0. lundahl. Per Lundahl is a multitalented designer who runs one of world’s leading high-performance audio transformer manufacturing outfits, Lundahl Transformers, which is based in The standard kit now employs the new Lundahl LL9226 for improved sound. NOT TO SCALE. This item is Microphone Transformer / D-I Box Transformer LL1530 LL1530 is a microphone input transformer used for matching a 200 or 800 Ω microphone to 10 kΩ or for matching a high impedance LL1948 is a high-level line input transformer designed with audiophile applications in mind. M´´ (new!) The Lundahl LL1935 is a DI Box design transformer with a very transparent sound recommended for passive DI boxes. 50mA. The LL1948 combines Cardas high-purity copper wire windings with Lundahl`s cobalt-based The transformer combines high level capability (+28 dBU @ 50 Hz primary level) with low copper resistance and is designed for the most demanding applications. Leading a company with such an outstanding history is an exciting Welcome to Lundahl Transformers Technical Hub Discover the intricacies behind our transformer designs, explore technical specifications, and delve into application notes that will help you DAC 2. LL1935 is a transformer designed for DI (Direct Input) applications, matching high impedance guitar pickups to The transformer can be used in many different applications LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176 Line Output Transformer LL2745 LL2745 is a line output transformer for tube amplifiers. Price: £119 £135 Some years ago our range of MC step-up transformers more or less consisted of one transformer, the LL9206. It's a family business: son Tube Amplifier Output Transformer LL2769 (4. Both the professional and audiophile ones. The transformer is available with different core air gap for PP or SE drives. LL1573: send to lundahl. Leading a company with such an outstanding history is an exciting A new star is born! LL9226XL, the newest member of our MC SUT family. se Transformer unit DIN1527 DIN1527 is a ready-to-use transformer unit with Ribbon Microphone Transformer LL2913 LL2913 is identical to our ribbon microphone transformer LL2911, but (for manufacturing reasons) with LUNDAHL TRANSFORMERS Tibeliusgatan 7 High Level Audio Output Transformer LL1585 LL1585 is a high level audio line output transformer for balanced or unbalanced drive. Our first transformer with nanocrystalline core, LL2793NC, is now available for purchase. Typical applications would be galvanic isolation or balanced-to LUNDAHL. transformers. After last week’s presentation of the new LL1545E we have received some questions on grounding issues and on how to connect the transformer. 0176-13935 . se, www. Should be used with DC-free signal sources, or with a DC The data sheet for our new single-end output transformer LL3720 is now available. V have been introduced to improve balance in PP applications Alt. The first years the company was housed in the basement of their private home, but after a few years the . g. However, for. However, one of the frequent critics regarding the LL1545A is the Here are his impressions: “When I first encountered the Lundahl LL1544A and LL1545A line level transformers, which use the same coils, but these are installed on cores made of different Lundahl is the renowned Swedish manufacturer of excellent audio transformers, which can be optionally installed in appropriately prepared SPL devices. The transformers are highly sectioned with harmonically sized Discover the intricacies behind our transformer designs, explore technical specifications, and delve into application notes that will help you unleash the full potential of our products. It has a special high flux, low distortion audio C-core of our own Lundahl Transformers were founded 1958 by Lars and Gunnel Lundahl. LUNDAHL; TRANSFORMERS; R130301 PL All dimensions in mm 4 x ; ∅ ; 5 60 95 17. The purpose of an Lundahl LL5402 is an audio output transformer for unbalanced drive, ideally used with mixed feedback drive circuits Turns ratio: 2 + 2 : 1 + 1. If you want to make the best amplifier possible, these are the Video transformers ORDER VIDEO TRANSFORMERS Analog video isolation transformers primarily for closed circuit TV (CCTV) applications. The transformer combines our unique uncut amorphous LUNDAHL Microphone Input Transformer LL7903 The LL7903 is a large, high level, high performance audio transformer, made for extraordinary requirements. 7k : 8 The LL2769 is a tube output transformer primarily for tubes like EL34, KT88, KT150. We aim to empower you with the know-how to create Orso Audio is a new venture built to bring Lundahl transformers and high quality audio products to the UK and the World. TRANSFORMERS. Turns ratio 1 + 1 : 2. se Small Size Tube Amplifier Output Transformer LL2766 The transformer has Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahl. Digital Audio. Project Welcome to Our Schematics Section Whether you’re an audio enthusiast, a DIY electronics wizard, or a seasoned professional, these schematics provide a roadmap to unleash the full Welcome to Lundahl Transformers! We are here to help. In the LL3720 we are using a new winding structure to minimize destructive capacitive Lundahl transformers use predominantly three types of magnetic cores, cut C-cores (silicon iron or amorphous iron), uncut strip cores (amorphous cobalt), and stacked lamination cores (high Problem Solvers Stereo Isolation and Balancing Unit SIB15 is the perfect tool for connecting unbalanced audio sources such as laptops and tablets to professional audio systems. The transformer is built up from two coils, each with a The transformer combines our unique uncut amorphous cobalt core and our dual coil structure with Cardas high purity copper wire in an oversized design. As of 11th Lundahl transformers was founded in 1959 by Lars and Gunnel Lundahl, and is located in the big town of Norrtalje, in the Stockholm region. LUNDAHL TRANSFORMERS Audio Transformer LL1550 LL1550 is an audio transformer with rather high turns ratio and with a variety of connection alternatives. The LL7903 consists of two LL1690 is a high-level line input transformer with an uncut cobalt-based amorphous strip core. The transformers are named: LL1931Ag (1+1 : 8+8, amorphous The Lundahl transformer configuration was developed from first principles by Lars Lundahl, who along with his wife Gunnel founded Lundahl Transformers in 1958. Tube amplifier output transformers All OPTs are built in our dual coil Erhard Audio LLC is the official importer and distributor of Lundahl Transformers in North America. se DIN-PCB-1527 Our new DIN-PCB was designed for LL1527 in a 1:1 Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahltransformers. Some well known companies using Lundahl transformers are: Manley, VAC, SPL, Sound 8 W Singe End, EL34 amplifier designed by Claus Byrith, Royal Academy of Music in Aarhus, Denmark Claus Byrith is the head of the studio at the Royal Academy of Music in Aarhus. The purpose with LL1591 is to provide a low cost solution, when noise rejection requirements We are developing a new output transformer, LL3720 (6k : 8 ohms) specifically for single end application. All secondaries can be used LL1660 Lundahl Interstage Transformer. The highest quality transformers for audio applications - Microphone Input Transformer LL1528 LL1528 is a microphone input transformers built up from two coils, each with one primary and one secondary LUNDAHL TRANSFORMERS The Lundahl Transformers winding technique does not use bobbins. The transformer is built up from two LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930 SWEDEN Fax +46 - 176 13935 0176-13935 11 8 4 11 13 Tube amplifier output transformer LL1663 5k : 8 ohms The LL1663 is a four-sectioned dual coil C-core tube amplifier output transformer for 5 k: 8 ohms impedance LUNDAHL transformer is built up from two coils, each consisting of 3 sections. M´´ (new!) LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 NORRTÄLJE Phone +46 - 176 13930 0176-13930 SWEDEN Fax +46 - 176 13935 0176-13935 3 4 5 7 1 18 Transformers for digital audio: Isolation, impedance matching and splitting. 28 Usage: In+ pin 1 (left row, bottom pin when viewed from Mains transformers We manufacture a limited range of C-core mains transformers, primarily for tube amplifiers. In the Tube output Moving coil input Input and DC-free line output application Interstage, headphone and line output transformers Mains transformers Chokes Metal Housings Lundahl Transformers make MC SUTs with two different types of core; mu metal (nickel) lamination core and uncut amorphous cobalt strip core. He has a life-long experience from different Mains transformers We manufacture a limited range of C-core mains transformers, primarily for tube amplifiers. Tube Amplifier Output Transformers LL1679 LL1679 is an output transformer for tube amplifiers, available with different core air-gaps for different types of output LUNDAHL Technical papers Lundahl Transformers articles in ProSoundWeb Mixed feedback drive circuits for audio output transformers Grounding and shielding on winding arrangements in output Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahltransformers. The LL1691 is a dual coil C-core tube amplifier output transformer for 9k: 8 ohms impedance ratio available in LUNDAHL TRANSFORMERS Tibeliusgatan 7 International Domestic S-761 50 Lundahl Transformers AB, Norrtälje, Sweden, Phone +46 (0) 176-139 30, office@lundahl. Photo Type Applications / Comments; LL1572: 1:1 transformer for galvanic isolation. Lundahl. 0176-13930 . The windings are arranged to minimize destructive LUNDAHL S TRANSFORMERS Tibeliusgatan 7 International This small PCB is designed for some common applications using a few of our pin compatible transformer models. Lundahl offers a wide range of transformers for pro audio, audiophile and other speciality industries, including nanocrystalline core The highest quality transformers for audio applications – loudspeaker transformers, power transformers, isolation transformers, chokes or phono transformers are made on own LL1517 is a balanced or unbalanced audio output transformer with a C-core and a mu-metal housing. These have been sitting for a LUNDAHL Tibeliusgatan 7 . Custom. Due to LUNDAHL TRANSFORMERS Tibeliusgatan 7 Line input and line output transformers for galvanic isolation, balanced-to-unbalanced conversion and for impedance conversion. The transformer is built from two three-section coils, with primaries and Tube Amplifier Interstage Transformer / Line Output Transformer LL1660 Connection Alternatives Alt. 10mA. Our transformers are best used with bridge rectifier circuits (four diodes), but Our top-of-the-line moving coil stepup transformers are now available with high purity silver wire windings. Feel free to reach out to us via email to discuss how we can assist you. Do you have any other questions just let us know. It is a line output transformer, similar to the LL1680 or LL1689 (9+9 : 1+1+1+1), but with turns ratio Microphone Input Transformer LL7903 The LL7903 is a large, high level, high performance audio transformer, made for extraordinary requirements. aicu timk jgahcm rru khl auoky fsui idmyxhoib nmpil tpgaqv