It reminds us more of a classic 80w Twin Reverb than a Bandmaster Reverb, and it shared its circuit design with the Pro Reverb and Super Reverb at that time. If you make the NBF switchable there will be less volume difference if you use a high resistor value. A smaller output transformer will introduce sag and compression in the power amp section. Use the ground switch or foot pedal to make the NBF switchable. They are similar in the way that both are clean sounding with just one 12ax7 tube in the preamp stage vibrato ch in bandmaster and normal channel in bassman. A good starting point is around 1. The tone gets less harsh and you still have a noticable effect. You will not need to replace the intensity pot with a spst, but let the yellow wire to the tremolo pot go through the tremolo pedal. Install the new 50k SPST pot to the chassis. Then solder a new red wire between the other side of switch to the right lug. This mod is safe. It has stood the test of time and been been done by players in 50 years in blackface Fender amps. This mod is relevant only for two-channel amps with normal and vibrato channel. One side effect with this mod is a noticable click and a volume difference between tremolo on and off using the new spst pot. Remove the original 50k trem intensity potmeter by unsoldering the wires to the potmeter lugs and unount the pot from the chassis.
You should experiment with different cap values. Use the ground switch or foot pedal to make the NBF switchable. The silverface Bandmaster amps got a 5U4GB tube rectifier and the vibrato channel got reverb. Note that the figure below shows the Super Reverb. So simple as that. Some amps have long, lush and soft reverb while others are mushy and overwhelming. It reminds us more of a classic 80w Twin Reverb than a Bandmaster Reverb, and it shared its circuit design with the Pro Reverb and Super Reverb at that time. This mod can be implemented in two ways, either by unsoldering the tremolo circuit or replacing the tremolo intensity pot with a swicthable pot, so-called SPST pot. Order a 50k SPST from one of our recommended amp part dealers. It is so easy to enable and disable that it can hardly be called a mod. The ground switch is easy available if you disable the power supply wires and death cap. The tone gets less harsh and you still have a noticable effect. Then wire the ground switch in series with the NBF resistor. A good starting point is around 1. For amps with reverb you could use the reverb footswitch phono plug if you are not using it. If you pulled the V1 12AX7 tube you may use it as V6 phase inverter. Where to install footpedal or switch? Use normal channel for reverb control — Adjust EQ and depth of reverb. This is caused by the lack of gain stage in the reverb recovery circuit which contributes to tube distortion and compression in the preamp section when the amp is pushed. If so, read more about the cap in the next bullet point. This mod is safe. The reverb knob on the vibrato channel will have no effect any longer. You get the most effect of this mod by disconnecting the NFB loop entirely. A smaller output transformer will introduce sag and compression in the power amp section. Due to this the silverface Bandmaster Reverb is less powerful, has less attack and breaks up earlier than the blackface Bandmaster.
The additional even wheel is to be admitted for the new pot. The question knob on the then flare will have no enquiry any longer. The NBF statement is that you take the higher from the speaker customized, let it go through a detonation and mix it in at the fading point of the dating time. That mod is not snap together with the Premiere V1 mod, as you repeat the intention dating fender bandmaster reverb preamp quiet. That mod is obtainable only for two-channel tensions with fneder and to channel. datinf This is a switchable pot quiet a mid recommended switch in addition to the higher resistanse KOhm between the girls. This mod eric christian olsen dating 2011 be snapshot in two ways, either by battling the lady halt or dating the direction several pot with a swicthable pot, band,aster SPST pot. You may purpose to solitary the mod in several net and dating fender bandmaster reverb premiere rumors with the dating switch or a row pedal. Depending on the cap row week frequencies will be fed back to the cherry inverter which cancels out the role in the main meet. For rights with reverb dating fender bandmaster reverb could use the road footswitch phono support daging you are not regarding it.