Field Coils for Audio Systems

[AMR / iFi audio]

My top horn is 80cm diameter so they are big
They are around 180cm tall total.

That is taller than average person, I guess... True monsters. It looks like you will be able to wake up half of a city at once

 

[christoph]

My top horn is 80cm diameter so they are big
They are around 180cm tall total.

My room could house them

 

[Audiophile Bill]

My room could house them

Your room could house a gigantic monster horn

 

[the sound of Tao]

My room could house them

Christoph you should see if Bill can build you a tower MTM version with a slot loaded bass cabinet mirrored above and below the monster horn… that’d definitely start an avalanche up in your alps

 

[christoph]

Your room could house a gigantic monster horn

The "view-blocking-area" should not be bigger than the Universums but iIrc, the mid-horn of the Universums is also 80 cm diameter

 

[spiritofmusic]

Christoph you should see if Bill can build you a tower MTM version with a slot loaded bass cabinet mirrored above and below the monster horn… that’d definitely start an avalanche up in your alps

Forget about "bringing the musicians to you"...more like bringing the landslide.

 

[morricab]

Your room could house a gigantic monster horn

The one he has isn’t so small...

 

[Phantom-Audio]

I have The following Field Coils Systems.


1 Pair of Classic Audio Loudspeakers T1.5 Full Field Coils (In the UK)
1 Pair of Classic Audio Loudspeakers T3.4 Full Field Coils (In indonesia)
1 Pair of LM-03 Full Field Coils In Indonesia.

For Music either Im using Active Studio Speakers from Quested Speakers from the UK Designed by Roger Quested, or Im Using Field Coils Horns.


All the Above Field Coils are used with Atma-Sphere Amplifiers.

Here is Line Magnetic Field Coil Super Tweeter, I will take more pictures in the coming week for the LM-03 Field Coils.

 

[Phantom-Audio]

Field Coil Driver for the T3.4 Classic Audio Loudspeakers

 

[Phantom-Audio]

Line Magnetic Field Coil Driver Western Electric Clone: 555

 

[Phantom-Audio]

Another view of the LM-555 Driver:

 

[Carlos269]

After a few delays, my Supravox 215-2000 EXC field-coil drivers are now mounted on the Open Baffles:













Next I will sort out which amplifiers to use in order get the most out of them.

 

[ArnoFenn]

Any way you can do spl measurements?

 

[dcathro]

I have The following Field Coils Systems.


1 Pair of Classic Audio Loudspeakers T1.5 Full Field Coils (In the UK)
1 Pair of Classic Audio Loudspeakers T3.4 Full Field Coils (In indonesia)
1 Pair of LM-03 Full Field Coils In Indonesia.

For Music either Im using Active Studio Speakers from Quested Speakers from the UK Designed by Roger Quested, or Im Using Field Coils Horns.


All the Above Field Coils are used with Atma-Sphere Amplifiers.

Here is Line Magnetic Field Coil Super Tweeter, I will take more pictures in the coming week for the LM-03 Field Coils.

View attachment 80405 View attachment 80406 View attachment 80407 View attachment 80408

Lucky You!

Please tell us more about your listening experience with these different speakers.

Best Regards

David

 

[AMR / iFi audio]

Next I will sort out which amplifiers to use in order get the most out of them.

Any particular positions in particular order already on your list?

 

[Carlos269]

Any particular positions in particular order already on your list?

In order of interest:

1. Bespoke custom Single Ended OTL monos
2. Custom 45’s S.E.T. D.H.T. monos
3. Conventional OTL monos

Working on getting # 1 built, waiting on delivery of # 2 and contemplating # 3.

I want to match fast drivers with fast amplifiers.

 

[cal3713]

Would love to

In order of interest:

1. Bespoke custom Single Ended OTL monos
2. Custom 45’s S.E.T. D.H.T. monos
3. Conventional OTL monos

Working on getting # 1 built, waiting on delivery of # 2 and contemplating # 3.

I want to match fast drivers with fast amplifiers.

Would love to see those too!

 

[MarcelNL]

and what frequency range are you shooting for?

 

[Carlos269]

and what frequency range are you shooting for?

Ideally would like to achieve 40Hz to 16 KHz with a full range driver, but realistically expect about 55Hz to 10 KHz, and there are reports that perhaps high-frequencies will start to roll off as early as 7 KHz and low frequencies at 70Hz. I have additional divers to augment the frequency response but obviously the goal is to hear what the single field-coil drivers can do and then to determine if I can live with what they do well, knowing their limitations.

 

[morricab]

In order of interest:

1. Bespoke custom Single Ended OTL monos
2. Custom 45’s S.E.T. D.H.T. monos
3. Conventional OTL monos

Working on getting # 1 built, waiting on delivery of # 2 and contemplating # 3.

I want to match fast drivers with fast amplifiers.

What output tube will you use for the SET OTL? I have seen the 6c19pi be a usual choice for this rare amp type.
I have owned a couple of OTLs in the past. One was the Silvaweld OTL Reference monos that had 4 x 6c33c per mono...they sounded amazing but warmed the room by several degrees. I also had the Transcendent Sound Beast, which I built from a kit. Those sounded great too but weren’t stable with my electrostats.