Re: Should we be considering valve amps and speakers as a system rather than separate boxes ? - Mike Burrows

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Re: Should we be considering valve amps and speakers as a system rather than separate boxes ?

I'm not familiar with the TAD4001, but if the amp has 4-8-16 Ohm taps, you can alter the damping factor by simply connecting a 16 Ohm speaker to the 8 Ohm tap, or an 8 Ohm speaker to the 4 Ohm tap.

The output transformer is presented with a step-down condition; i.e.,
a OPT designed with a 10,000 Ohm primary with a secondary load of 16 Ohms, but an 8 Ohm speaker is connected. The primary impedance is now 5000 Ohms, and the output tube(s) is now required to pump more current into this lower load impedance. Damping factor increases. The down side is this: peak plate current increases, distortion increases and power output increases as well.

I suggest you try hooking up your speaker to different taps, and listen to the sound. Experiment with the different connections as you listen to your favorite music, and it will not cost you one cent.

Regards,

Mike

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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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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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