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Hi everyone!
I’m having some trouble with the buff and blend. It kills the spark and the attack, on the pickups of the bass we are using it.
The musikding 250 OD is great for bass, but when we want to mix it te get some of the deeper sounds into the line again, and we connect the blender it sucks all the punch of the pickups.
I wonder if this could be because of the capacitors of the BnB and increasing their values could let more trebble go through.
Also has a lot of noise when both are connected, I thought that it could be due to the multiple trials and soldering, so i decided to get new circuits but when I installed it in the box the same thing happened, I tried different values up to 10k for the R5 but still noisy, and blending doesn’t sound as clean as bypassed when is all the way towards the clean line, and is fuzzy.
The result going through the blender is to have a dirty unusable signal.
I’ll upload some pics as soon as possible.
Thanks you guys
Please share photos that clearly show all connections. Also, let us know which JFET you’re using and provide the voltage readings for all three pins—D, S, and G. Ensure all common ground connections are properly made, as this could be the source of your noise issue. I’m not familiar with the Musikding 250 at all, so you’ll need to double-check your wiring. It’s always best to fully test your circuit before installing it into the Buff N Blend, and make sure you’re sharing the ground properly.
What you’re describing doesn’t make sense unless there’s a wiring error, ground problem, or another build issue. The Buff N Blend is designed to strengthen your signal with its simple Buffer and provide a direct audio path that doesn’t alter the frequency response.
High-frequency loss, or noise is not a behavior for the Buff N Blend. This PCB has been available for nearly 13 years and is one of our most popular, so any design flaw would have been caught long ago.
The stock capacitor values are carefully chosen to avoid cutting either high or low frequencies.
If you’re hearing Fuzz, it strongly suggests there’s an issue with the build.
I recommend posting clear pictures of all the connections, and answering the questions so we can try to help.
This is the BnB board without the R5, the two leads instead, which I was using to test different values of the resistor
ñand the OD 250 from musikdin
I hope it’s ok
Hi Trevara: I just had a peek at the buff ‘n’ blend build doc. It looks to me like you may have mounted the footswitch and LED on the opposite side of the board (upside down IOW). Normally the components (resistors, caps, etc.) should be visible when you mount the footswitch. Here’s a pic to verify:
I suggest you follow Barry’s advice and test the 250 separately first but seems to me the Buff ‘n’ Blend is where the problem lies.
Oooops! Dang it! Thanks I’ll try it!
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