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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Hi ,
I'm just wondering about interactive affects of output impedence of zero-feedback valve amps and speakers and to what extent the speaker damping is affected by an amplifier . I have been through various books and there is little information on the subject , the Firstwatt site has been the most useful reference so far . I've been playing with series resistors and find that too large a value can cause peaking (and of course a loss of sensitivity) , ditto replacing a 0.2ohm ferrite with a 1.5 ohm air cored inductor in the crossover for instance . I'm thinking that perhaps EBS alignments maybe the way to go for bass reflex speakers and zero-feedback valves (larger box , fatter/longer vent) . Hardly wife-friendly but is this a correct assumption to make ? I'm thinking aloud here but this is an issue which has been bugging me for a while , without access to suitable measuring equipment I'm scratching my head and starting to lose sleep . I have TAD 4001 with Lecleach 320Hz horns , just need to partner them correctly to a bass driver and I only have the cash for one attempt you see . Your thoughts please :)cheers
...FB
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Topic - Should we be considering valve amps and speakers as a system rather than separate boxes ? - fatbottle 16:31:41 03/22/06 (9)
- Yes, they should work hand in hand. - cheap-Jack 09:03:07 03/23/06 (3)
- Re: Yes, they should work hand in hand. - fatbottle 13:11:44 03/23/06 (2)
- Not sure of what you are looking for - Russ57 04:13:02 03/24/06 (1)
- Designing amps/speakers as a system................. - fatbottle 05:40:49 03/24/06 (0)
- Since zero feedback amps usually have a couple ohms of output impedance..... - JimL 20:47:45 03/22/06 (0)
- Re: Should we be considering valve amps and speakers as a system rather than separate boxes ? - Jimmy 19:57:08 03/22/06 (0)
- I believe Thiele looked into this problem when deriving his vented box alignments.. - grhughes 17:45:22 03/22/06 (1)
- Re: I believe Thiele looked into this problem when deriving his vented box alignments.. - fatbottle 22:36:26 03/22/06 (0)
- Re: Should we be considering valve amps and speakers as a system rather than separate boxes ? - Mike Burrows 17:26:25 03/22/06 (0)
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