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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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In Reply to: HF rolloff with LL1660S posted by Danny T on September 12, 2003 at 02:33:03:
My speculation is that the essentially 1:2 connection you are using with the LL1660S/10mA means that the paralleled 5670 simply hasn't a low enough driving impedance to prevent high frequency roll-off. My experience has shown me that step-up IT connections only "work sonically" if the driving tube has a very low plate impedance (<1000 ohms). The increased bass response perception may be just that. With the absence of some high frequency level you perceive more bass.If you can sacrifice the gain, try the LL1660S/10mA connected as 2.25+2.25:2+2 to see what happens. Use only half of the 5670.
Kevin Carter
K&K Audio
www.kandkaudio.com
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Follow Ups
- Re: HF rolloff with LL1660S - KevinC 05:04:44 09/12/03 (3)
- Re: HF rolloff with LL1660S - Danny T 06:15:01 09/12/03 (2)
- Re: HF rolloff with LL1660S - KevinC 06:24:54 09/12/03 (1)
- Re: HF rolloff with LL1660S, solution found - Danny T 13:36:31 11/26/03 (0)
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