Ricardus
WILL SOLDER FOR FOOD
But as long as people are posting wish lists, someday I am going to need all of the transformers for a Fairchild 670 build.
UTM INDUSTRY audio transformers - from Poland - EU
- Thread starter Whoops
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Help Support GroupDIY Audio Forum:
I think it's too early for such big things. We are a 4 person crew on 70 square meters by now.
UTM was established as an IGS Audio daughter company. The reason was very simple, IGS needed more audio transformers every month, therefore, I bought and borrowed a couple of wise books, read the whole internet about the construction and materials needed. Finally, we started prototyping. After 9 months of prototyping, we decided to install the first UTM transformers in our RB500ME. The listening tests and Audio Precision measurements were very promising. We decided to send this module to Tape Op magazine to review. The review was fantastic. Link.
We didn't do much reverse engineering. We designed the transformers by ourselves, it's not rocket science. The first and most important condition was met - we are able to successfully manufacture the transformers for our usage. After that, we established the UTM website and continued the work. We are trying now to recreate the most popular and famous transformers used in the previous century using classic methods of windings. Our offer is still growing. We shall see what's gonna happen. Please let me know if you have any more questions.
rock soderstrom
Tour de France
TwentyTrees
Well-known member
Agreed! Will definitely be in touch to order some pieces in the spring.I am really happy about your offer and hope that you and your team can continue to successfully build up your business. Good luck!
ruffrecords
Well-known member
The Neve class A output transformers were all steel cored. Today, steel transformers are made from cold rolled grain oriented steel (CRGO). Since this was invented in 1933 it was very probably available to Neve as a manufacturer in the 70s. So if the same core structure and winding plan is used today, the sound of the transformer should be very similar to the original.
Cheers
Ian
Estomagado
Active member
Estomagado
Active member
Also, do you ship transformers outside of the EU? You can't believe how difficult to find and expensive are good audio transformers in South America...
Once I did a listening test comparing Sowter and Carnhill for the output of a 1081 that I built and Sowter sounded more close to a transformer that I built with a huge core (wasnt very good iron) they had an amazing low end. there was a clear difference between Sowter and Carnhill. I have never had a Marinair to test. I should have had a more scientific test but I did not had the equipment at that time. I suppose the windind and the gap should be the main differences.
Yes, we do.
- Joined
- Nov 11, 2014
- Messages
- 10
I just wanted to congratulate you on your efforts and new company Igor.
I tested your UTM2546 today and it sounded phenomenal.
I tested your UTM2546 today and it sounded phenomenal.
Ricardus
WILL SOLDER FOR FOOD
Did you end up doing that run of API style input transformers?
Hi IGS,
on the subject that Ian talked about...
The Neve (Marinair) output transformers have a very specific winding structure,
there's a reverse wound primary and a split wound secondary.
I would like to ask you if your UTM3547 and UTM3548 follow the original transformers winding structure or if they have a more standard Primary to Secondary winding?
Thank you so much
We follow the original winding structure.
I ve built a pair of 553 EQs with Vami /CZ PCBs with switchable frequencies. I used the UTM 3503 Out TX as API 2503 replacements. The wire colours are a little bit differnet to the original. But after Igors hint it was not a big thing. Thanks man!
The TX are sounding superb. Wow... A "easy" Frequeny response check shows good linear performance. They nail forward, clean, verrry open in combination with this passive/discrete Opamp EQ circuit. Its doing the API sound thing like you would expect from EA, AVD....clones. But I dont have any original 2503 to compare it directly. A very impressive EQ that shows how good circuits can sound. I don't use a load resisitors at the output. There is not any "harsh" audible behavoir during tests.
Its genius...
Now its time to order "real" frontpanels" for these 553 EQs...
Very excited about the next UTM batch I ordered for a Abe's Pye Clone and a UA175b Compressor...
The TX are sounding superb. Wow... A "easy" Frequeny response check shows good linear performance. They nail forward, clean, verrry open in combination with this passive/discrete Opamp EQ circuit. Its doing the API sound thing like you would expect from EA, AVD....clones. But I dont have any original 2503 to compare it directly. A very impressive EQ that shows how good circuits can sound. I don't use a load resisitors at the output. There is not any "harsh" audible behavoir during tests.
Its genius...Now its time to order "real" frontpanels" for these 553 EQs...
Very excited about the next UTM batch I ordered for a Abe's Pye Clone and a UA175b Compressor...
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Ricardus
WILL SOLDER FOR FOOD
Very cool!
I had already done the wire color translation and written it down for the near future when I order some of these for a build.
I had already done the wire color translation and written it down for the near future when I order some of these for a build.
