hi folks ,
built a hornby skewes booster with an OC44 and its sounding good . The following ideas may be useful in some way if i can work out how to do them lol
There is quite a large boost with noticeable hiss and for the places i play the volume level is harder to control with it 'cooking ' ....
so what i'm thinking -
is there a simple way to calm this circuit down a bit [ attenuate if you like ] ? and reduce the hiss perhaps with small value caps
with my limited knowledge i'm wondering if some kind of master volume control could work ? i don't know where to tie a MV pot to in the circuit though but i could solder one in if i knew where to place it
also , maybe a couple of caps placed in certain slots e'g between collector and base [or is it emitter] ?
i've always liked treble boosters with old valve amps but have also always wanted to keep their tone but calm them down a bit so the boost isn't quite as alarming ?
any thoughts from the more experienced ? thanks
Hornby-Skewes - Treble Booster tweaks ??
- Nocentelli
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https://www.freestompboxes.org/viewtopic.php?f=21&t=2051
As you can see there a few different schematicss for the hornby skewes treble booster. Assuming you have done the pnp version like the tagboard vero version, a small cap (100p-220p) between collector and bass can remove a bit of hiss at the expensive of the jangling top end. For a master volume, remove the 100k resistor from the output cap, and replace it with a 100k log master volume pot, lug 3 to the end of the output cap and lug 1 to ground: lug 2 is the new attenuatable output.
As you can see there a few different schematicss for the hornby skewes treble booster. Assuming you have done the pnp version like the tagboard vero version, a small cap (100p-220p) between collector and bass can remove a bit of hiss at the expensive of the jangling top end. For a master volume, remove the 100k resistor from the output cap, and replace it with a 100k log master volume pot, lug 3 to the end of the output cap and lug 1 to ground: lug 2 is the new attenuatable output.
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...
thanks for that , great info - just what i needed
i have the input cap at 27n and the output at 10n so it's quite beefy but still with plenty of top, its on a tag board and i copied the original from e bay photos including the switch that drains the battery unless turned off lol and the massive pop when turning on , [ yes im a blackmore freak ]
i have the input cap at 27n and the output at 10n so it's quite beefy but still with plenty of top, its on a tag board and i copied the original from e bay photos including the switch that drains the battery unless turned off lol and the massive pop when turning on , [ yes im a blackmore freak ]