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Old 15th August 2007, 07:36 AM   #11
max29 is offline max29  Netherlands
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Really interesting how friends react to the sound a OTL amp from Atma Sphere.

Many find it too fast and too honest (slew is always mentioned)
Some people need a more relaxed way of the music coming to them.
The speed of the Otl reminds them too much of every day life (being stressfull and too fast and nervy). They need music to relax.

What really helped to add paper in oils and chokes to
´slow down the Road Runner´ (meep meep) as one of them called it ..

It was far more ´acceptable of speed´ so to say.
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Old 15th August 2007, 12:09 PM   #12
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I am new to tubes. most of my amps have been S.S. so the "speed" of the Atma's is more of what i am used to. I tend to like fast amplifers anway. so your statment makes sense.

I have not yet hooked this amp up to my Hales however. that may change things drastically as the hales have a pretty low Imp curve. they dont seem to do well with tube amps. so it will be interesting to see how these do.



Zc
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Old 16th August 2007, 09:10 AM   #13
max29 is offline max29  Netherlands
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Why go lower as 8 Ohm with tubes anyway.
Asking a lot, mostly too much. Only commercial design have 4 ohm but it is to attrack newcustomers instead of playing music.
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Old 16th August 2007, 09:35 AM   #14
poynton is offline poynton  United Kingdom
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Does anyone know what Philips etc. speakers were the high impedance type and what were the impedances??

Andy
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Old 16th August 2007, 11:14 AM   #15
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Quote:
Does anyone know what Philips etc. speakers were the high impedance type and what were the impedances??
One very common was the AD9710AM which is an 8" full broadband speaker with wizzer cone but there where others also like AD5060AM which is 5", all of these where 800ohm nominal impedance. The A after the numbers in the part number indicates high impedance, AD9710M is 8ohm amd AD9710AM is 800hm.

Regards Hans
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