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Need ampage v-4 filter caps
Does anyone know where I can find filter caps for a vintage ampeg v-4? Thanks!!
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Thanks for the info. It turns out it just needs new power tubes. Thanks!
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I checked the pots/sockets and they are ok. When the power tubes are in, the bias voltage slowly drops. When I turn the standby on,the voltage returns to...
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Ampeg v-4-very low volume
I have a ampeg v-4. The volume is very very low. All the controlls work but the vol is just super low. All the voltages are fine(plates, screens etc.) Any...
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What is ht fuse for?
I have 2 fuses on my amp. 1 main and 1 HT . What is the HT fuse for? Thanks.
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By the way, the summing box has a 33k resistor in line from each channel to the summing node but no resistor going to ground from the summing node.The channels...
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All my inputs are seeing 300ohm coming from an alesis hd24 with external clocking(from a Apogee ad16).There is plenty of gain coming out of the alesis and...
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Steve,the difference in sound from the summing mixer vs the mackie is more than just hf rolloff. There is a definate improvement in overall sound quality...
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STEVE, I ANSWERED YES TO ALL OF THE QUESTIONS EXCEPT #2.THIS BOX IS GOING TO BE UNBALACED.I'M GOING TO CHANGE MY LAYOUT AND USE SMALLER POTS.IT'S GOING TO...
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summing box layout ques
I want to build a summing box (16 channel like the rolls folcrom but with vol for each channel).Some of the wires comming of the vol pot going to the summing...
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Rolls Passive Summing, 150 Ohm Output?
The Rolls Folcrom Passive Summing Box Has A Balanced 150 Ohm Output.how Is This Possible If It Is Passive? They Say It Has No Active Circuitry Or Transformers...
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Input Impedance Of 12ax7?
What is the input impedance of a 12ax7? (at the grid) THANKS!
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What Values For Tone Circuit?
I play a home built black face fender champ.I want to change the values of the caps in the tone circuit.My goal is to dip different mid freq.How do I calculate...
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Carbon Comps On Plates And Cathodes?
I know that series carbon comps sound different than metal films but what about on plates and/or cathodes?Thanks!
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How To Lower Ac Filament Voltage?
Is it ok to use a small 1 ohm resistor to lower my ac voltage on the filaments?I'm getting 6.9VAC.Thanks.
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