Guitar amp flexwave 65/112 great sounding all channels!
thing is the clean channel reminiscences champagne sparkling signature of the vintage club thirty quartet el84 that slm won favor back in 94 for clean channel.
but for the darnest reason the volume pot misses about the first third of log taper, meaning you can't dial in low volume, & it's loud loud the darlington's final push pull into paper cone.
schematic shows dc blocking ceramic precision caps, it was 2.2mfd, stage to stage dc isolate. but wait, if dc breaks thru the blocking cap, wouldn't it runaway the preamp to dc multiplied? when the pot is dialed past its first third rotation, then the speaker plays, that's at about one pm on the dial. so dc break thru is not occurring if the amp plays the speaker once past first third volume rotation.
I have to decide whether to scissors the flat ribbon cable feeding the topside mounted amp tuner indicator bezel. it's the only way to remove the chassis. It will incur expense buying the coupler to swage onto scissored ends of ribbon cable & we do not know its reliability under cab vibration performance routinely.
ask why the pot does not conduct for the first third? does the input buffer protect from too excessive stompbox signals inciting burn thrus of the pot track? if so how could first third outage be present? I would be disappointed to replace that pot only to realize it will recur later on again. so if it was stompbox abuse, i will repair but if not, it could turn out sketchy whether this burn thru will recur again.
or I could just dial volume past first third & rely upon the electric guitar's master volume to control lower regimes. but you all know the guitar's volume ain't perfect reproducing all the frequencies to our biased ears, especially bridged by a high pass cap to emphasize more highs during lowed volumes.
the bothering question remains, of the digital board & what it is doing, insofar as sensate from the potentiometers, or, does the digital board have nothing to do with the clean channel's volume blindness in the first third?
thing is the clean channel reminiscences champagne sparkling signature of the vintage club thirty quartet el84 that slm won favor back in 94 for clean channel.
but for the darnest reason the volume pot misses about the first third of log taper, meaning you can't dial in low volume, & it's loud loud the darlington's final push pull into paper cone.
schematic shows dc blocking ceramic precision caps, it was 2.2mfd, stage to stage dc isolate. but wait, if dc breaks thru the blocking cap, wouldn't it runaway the preamp to dc multiplied? when the pot is dialed past its first third rotation, then the speaker plays, that's at about one pm on the dial. so dc break thru is not occurring if the amp plays the speaker once past first third volume rotation.
I have to decide whether to scissors the flat ribbon cable feeding the topside mounted amp tuner indicator bezel. it's the only way to remove the chassis. It will incur expense buying the coupler to swage onto scissored ends of ribbon cable & we do not know its reliability under cab vibration performance routinely.
ask why the pot does not conduct for the first third? does the input buffer protect from too excessive stompbox signals inciting burn thrus of the pot track? if so how could first third outage be present? I would be disappointed to replace that pot only to realize it will recur later on again. so if it was stompbox abuse, i will repair but if not, it could turn out sketchy whether this burn thru will recur again.
or I could just dial volume past first third & rely upon the electric guitar's master volume to control lower regimes. but you all know the guitar's volume ain't perfect reproducing all the frequencies to our biased ears, especially bridged by a high pass cap to emphasize more highs during lowed volumes.
the bothering question remains, of the digital board & what it is doing, insofar as sensate from the potentiometers, or, does the digital board have nothing to do with the clean channel's volume blindness in the first third?