JTEX
Well-known member
The ones I bought from Tayda are all actually Type 2. Made by Dailywell. Type 2 FTW!
An Idea for a Universal Input Buffer/Booster (onboard)
- Thread starter JTEX
- Start date
Robert
Reverse Engineer
Ahhh, that's nice to know! I don't think I've ordered any from Tayda since they started carrying Dailywell.
chris.knudson
Well-known member
I feel like Mouser wants 3x more for any kind of hardware than what you can find them elsewhere for.
Those are the bumble bee dips that child Eric Johnson got froma young Bob Moog on the summer solstice before woodstock that led to his mythical tone on....Got the mini DIP switches. They're CTS for that vintage Fender toan
View attachment 70229View attachment 70230
JTEX
Well-known member
It's alive!
First impressions: I had a bit of a hard time measuring its noise floor. It's really close to the limit of my Audio Presision System Two (-120dBu), so I had to do some noise summing calculations to come up with the correct figure:
benchmarkmedia.com
Buffer's self noise ended up at -117dBu (20kHz BW), as it should be. Maximum input is +11dBu on a 9V supply, which works out to a 128dB dynamic range. I'll have to measure the various boost modes, but I don't expect any surprises.
Thare ya go. It's a product now. Don't buy it, though. Make your own instead. No substitutes for the op amp. It's the best for this job.
First impressions: I had a bit of a hard time measuring its noise floor. It's really close to the limit of my Audio Presision System Two (-120dBu), so I had to do some noise summing calculations to come up with the correct figure:
Uncorrelated Noise Summation
Sum two uncorrelated or incoherent noise sources to find the resulting noise. Sum noise voltages expressed in V, mV, or uV. Sum noise powers expressed in dB.
benchmarkmedia.com
Buffer's self noise ended up at -117dBu (20kHz BW), as it should be. Maximum input is +11dBu on a 9V supply, which works out to a 128dB dynamic range. I'll have to measure the various boost modes, but I don't expect any surprises.
Thare ya go. It's a product now. Don't buy it, though. Make your own instead. No substitutes for the op amp. It's the best for this job.
Last edited:
giovanni
Well-known member
Can I give you some feature requests? I am curious about trying active electronics but I would like to be able to switch them completely off (going back to the passive volume pot). Also it may be useful to have an external control for the boost? Also does this work with a regular tone control? What about a bass contour like Reverend or G&L have?
JTEX
Well-known member
Switching to passive -> you can add your own true bypass toggle if you must, but you'd need a separate volume pot suitable for passive (250k or 500k), or a very hard to find dual gang pot with say 10k + 500k, one for active, one for passive. Try a temporary bypass, then remove it once you're satisfied that passive sucks in comparision. You can set the input Z with switches to make it sound exactly like passive, minus the tone suck and extra hiss that comes with rolling down the volume.
External boost control -> not going to happen from my side. AFAIC, that's what the DIP switches are for. You tweak them until you're happy, then it's set-and-forget, wih instant recallability from the toggle. You can modify the design to suit your needs if you want, the schematic is in post #1 above.
Regular tone pot? No problem. Works the same as in a passive setup. Just place it before the buffer.
Bass countour? I have a different tool for that (my Alembic-style filter). There's only so many things you can switch around with a simple 3-way toggle... And this buffer/booster is designed to (among other use cases) complement my filter, adding stuff it doesn't do, such as bass boost and (extra) treble boost. It would also go great in front of my one-knob compressor. Pre-comp EQ is very useful. Or post-comp. Or even better, both. It never ends...
External boost control -> not going to happen from my side. AFAIC, that's what the DIP switches are for. You tweak them until you're happy, then it's set-and-forget, wih instant recallability from the toggle. You can modify the design to suit your needs if you want, the schematic is in post #1 above.
Regular tone pot? No problem. Works the same as in a passive setup. Just place it before the buffer.
Bass countour? I have a different tool for that (my Alembic-style filter). There's only so many things you can switch around with a simple 3-way toggle... And this buffer/booster is designed to (among other use cases) complement my filter, adding stuff it doesn't do, such as bass boost and (extra) treble boost. It would also go great in front of my one-knob compressor. Pre-comp EQ is very useful. Or post-comp. Or even better, both. It never ends...
Last edited:
giovanni
Well-known member
I’m not sure if this schematic is correct, but what it does is it cuts bass. I haven’t peeked in my guitars to confirm.
Similar threads
