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21st November 2011, 10:51 PM
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#1 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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PUNCH 45 2ND GEN NON HD
I am working on a second generation punnch 45 (non hd) model.
The board number is P45-F2. I have a bad gain pot. The originals are 5k and I dont have any in stock. I have 1k and 2k in stock. I was wondering if I changed both pots to the 2k if this would be an issue on the amp? Do I have to stick with the original 5k pots? I have included a pic of the board to clear up any revision confusion.
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Pyramid 46 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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21st November 2011, 11:00 PM
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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The max gain would be lower.
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22nd November 2011, 12:00 AM
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#3 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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So it would greatly affect the output of the amp?
What size pots are those package wise?
__________________
Pyramid 46 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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22nd November 2011, 12:05 AM
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#4 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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The pin spacing between the closest pins is 0.2". From those pins to the wiper pin, it's 0.4".
Full power could be achieved but it would take a much greater input signal.
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Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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22nd November 2011, 12:57 AM
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#5 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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I found an old punch 150 board that still had the pots on it the amp works great, thanks again.
__________________
Pyramid 46 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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