Resistor upgrade for Firstwatt F1

milezone · 31st May 2009, 04:14 PM

Hi,

I'm gathering parts for a Firstwatt F1 build and am wondering of upgrading from the Vishay metal film resistors to tantalum film or Riken carbon film resistors will have significant sonic benefits. Any help would be greatly appreciated. Thank you.

Nelson Pass · 1st June 2009, 01:02 AM

I can't see how they would hurt.

milezone · 1st June 2009, 04:15 PM

true. I guess what I'm wondering is whether the difference is discernible. At 5 bucks a resistor things could get pricey. Also on a similar note, would it be problematic to use a 220 ohm resistor instead of a 221 ohm resistor in the fourteen different places in which they are used on the circuit? Any help is greatly appreciated. Thank you.

Nelson Pass · 1st June 2009, 05:57 PM

As a rule, Gate stopper resistors need not have any tolerance to speak
of. The functional values for these range down to about 100 ohms without
much difference.

milezone · 17th June 2009, 03:19 AM

Thank you for your knowledge (and your design!). Is this true for other resistors in the circuit as well as well? If I do replace the Dale resistors with tantalum film resistors, the values of some of the resistors will off by a few ohms. Is this problematic? Thank you.

Nelson Pass · 17th June 2009, 02:48 PM

Almost never is it a problem.

31st May 2009, 04:14 PM	#1
milezone diyAudio Member Join Date: May 2009	Resistor upgrade for Firstwatt F1 Hi, I'm gathering parts for a Firstwatt F1 build and am wondering of upgrading from the Vishay metal film resistors to tantalum film or Riken carbon film resistors will have significant sonic benefits. Any help would be greatly appreciated. Thank you.

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1st June 2009, 01:02 AM	#2
Nelson Pass The one and only Join Date: Mar 2001	I can't see how they would hurt.

1st June 2009, 04:15 PM	#3
milezone diyAudio Member Join Date: May 2009	true. I guess what I'm wondering is whether the difference is discernible. At 5 bucks a resistor things could get pricey. Also on a similar note, would it be problematic to use a 220 ohm resistor instead of a 221 ohm resistor in the fourteen different places in which they are used on the circuit? Any help is greatly appreciated. Thank you.

1st June 2009, 05:57 PM	#4
Nelson Pass The one and only Join Date: Mar 2001	As a rule, Gate stopper resistors need not have any tolerance to speak of. The functional values for these range down to about 100 ohms without much difference.

17th June 2009, 03:19 AM	#5
milezone diyAudio Member Join Date: May 2009	Thank you for your knowledge (and your design!). Is this true for other resistors in the circuit as well as well? If I do replace the Dale resistors with tantalum film resistors, the values of some of the resistors will off by a few ohms. Is this problematic? Thank you.

17th June 2009, 02:48 PM	#6
Nelson Pass The one and only Join Date: Mar 2001	Almost never is it a problem.

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