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Posted

I heard the Shindo Latife field coil speakers recently and thought the sound was beguiling. It was like a pair of good electrostatics but with tight and tuneful bass. I would like to share other members experience and knowledge of field coil speakers.

Posted

Nothing like a bit of commentary of product availability by the importer, should be more of it. Where's that drunk rabbit when you need him....?

Posted

I'm really interested in field coil speakers, given my love affair I'm having with 300b tubes at the moment (I liken field coils to the 300b of drivers). 

Posted

I'm really interested in field coil speakers, given my love affair I'm having with 300b tubes at the moment (I liken field coils to the 300b of drivers). 

 

They are here, please feel free contact us for audition, may be I should open GT for this peaked very high efficient too , perfect for 300b .

Posted

Nothing like a bit of commentary of product availability by the importer, should be more of it. Where's that drunk rabbit when you need him....?

 

 

drunk rabbit ? what all about ?

Posted

They are here, please feel free contact us for audition, may be I should open GT for this peaked very high efficient too , perfect for 300b .

 

I mean that they interest me, not that I am interested in acquiring some (at this stage). What intrigues me is why they are rarely used. 

Posted

Maybe read the forum guidelines about product promotion when not an sna sponsor.

Posted

I mean that they interest me, not that I am interested in acquiring some (at this stage). What intrigues me is why they are rarely used. 

 

 

I understand, I mean come an listen to find out speaker sound like ! 

Posted

Maybe read the forum guidelines about product promotion when not an sna sponsor.

 

 

Oh NO , I do not asking any business here .... My door alway open to someone  who ever want to know the sound simply share this hobby .

 

Why so sensitive unnecessary  ?

Posted

so the shindo distribution is a hobby and not a retail business.

Posted

so the shindo distribution is a hobby and not a retail business.

 

Should I answer your question ? 

 

Who ever know me will judge, I do not think your regards necessary .

 

This is the audio forum, people join to share and exchange knowledge .... 

 

 

denim hunter  

 

Posted Yesterday, 11:23 PM

I heard the Shindo Latife field coil speakers recently and thought the sound was beguiling. It was like a pair of good electrostatics but with tight and tuneful bass. I would like to share other members experience and knowledge of field coil speakers. 
 
So I reply ... as a stereonet  member  .....  Please check out my reply .....   unnecessary  ?
 
I know what I am doing here, I do not take adavance this forum to gain my business, wonder why you come up this idea ? is that all in your mind ? Hope not 
 
 
 
  • Like 1
Posted (edited)

demmauhong,

Perhaps your signature "Shindo user and distributor" indicates a vested interest?

Regards,

SS

Edited by Sub Sonic
Posted

demmauhong,

Perhaps your signature "Shindo user and distributor" indicates a vested interest?

Regards,

SS

 

 

Thanks , I do not want leave MY  signature "Shindo user and distributor"

 

But some one in charge this FORUM  ask me me to do this 

Posted

Btw I heard the Lafite at Demmauhong. They are hard to come by and I was just glad to be able to hear a pair. I know others might have experiences with different mkes and models, maybe vintage ones. It would be nice to hear other ppl experiences rather than finger pointing.

  • 4 weeks later...
Posted

A bit late here sorry...

 

Field Coils (electromagnets) were used before good permanent magnets became widely available after WWII. So, it's a old-school way of generating a magnetic field.

 

However there may be advantages in that you can adjust field strength, if desired, & with potentially some variation in sound...in a similar way that different permanent magnet materials (Alnico, ceramic, rare earth...) have a different magnetic field characteristics & therefore, some say, different sound style. You need to have an accompanying PSU of course.

 

This is a modern-manuf field coil driver that I have - requires a PSU/s to supply ~145vdc at ~200mA current to ea driver, so they dissipate ~30 watts & get warm ;) You can see the bulky magnetic coil winding required.

 

post-131486-0-22515700-1397366831_thumb.

 

All the vintage companies like WE, RCA produced F Coil drivers, requiring PSU voltages ranging from say 13v up to maybe 125vdc. They were used for woofers & mid-HF drivers.

 

Cheers, Owen

Dark Lantern blog - http://darklanternforowen.wordpress.com/

Posted

Anyone using electronics in the external magnet to reduce nonlinearities?

I'm no expert in the area of driver design but ;)..... I'm thinking that any signif distortion/non-linearities would be in the design of the magnet gap & VCoil...vs excursion, ie suspension design.

Like any such driver I guess, FC electromagnet or permanent magnet.

 

Cheers, Owen

Dark Lantern blog - http://darklanternforowen.wordpress.com/

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