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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: Arbelos Can you help w/ attenuator value selection? posted by DaveS on August 15, 2002 at 16:55:51:
10K to 25K is probably about right. The two problems that become worse with higher resistance are current noise (assuming that the amp has a bipolar transistor input), and high-frequency rolloff due to capacitance of interconnects and components. Look at a noise contour graph for the input transistor (such as in the datasheet below) to determine what source impedence minimizes the noise figure.
Ed
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Follow Ups
- resistance - EdG 08/15/0219:54:05 08/15/02 (21)
- optimal load impedance - Arbelos 05:21:44 08/16/02 (19)
- Re: optimal load impedance - EdG 06:31:34 08/16/02 (18)
- yes, yes... and no. - Arbelos 08:00:12 08/16/02 (17)
- but yes - EdG 10:50:04 08/16/02 (16)
- Re: but yes - Arbelos 13:19:04 08/16/02 (15)
- microphonics? - EdG 17:14:05 08/16/02 (12)
- Re: microphonics? - Arbelos 02:49:45 08/17/02 (11)
- Re: microphonics? - Davey 07:13:25 08/17/02 (10)
- Re: microphonics? - Arbelos 12:25:45 08/17/02 (9)
- Re: microphonics? - Davey 20:29:42 08/18/02 (2)
- rheostat - Arbelos 01:56:41 08/19/02 (1)
- Re: rheostat - Davey 07:14:50 08/19/02 (0)
- Passion Ultimate - DaveS 12:08:33 08/18/02 (5)
- Re: Passion Ultimate - Arbelos 17:36:22 08/18/02 (4)
- Re: Passion Ultimate - DaveS 21:58:52 08/18/02 (3)
- Re: ProPassion discontinued - DaveS 14:48:32 08/19/02 (2)
- Re: ProPassion discontinued - Arbelos 03:15:17 08/20/02 (1)
- Re: ProPassion discontinued - DaveS 18:45:11 08/22/02 (0)
- Another interesting series of posts. - DaveS 13:32:24 08/16/02 (1)
- Re: Another interesting series of posts. - Arbelos 16:42:41 08/16/02 (0)
- Thanks - DaveS 20:16:20 08/15/02 (0)
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