Seditionary
Well-known member
yes -- jeff's build guide on the vp28 is awesome ! very, very helpful. and these channels sound incredible.
i finished 2 of these with op amps that worked on first fire up. the only thing i had a bit of a problem with is one of the LEDs... in the build guide jeff recommends bending the amber LEDs at 45 degrees... i'd recommend not bending those quite so much... maybe 30 degrees or so... as they lay pretty flat on the board... if they are bent at too much of an angle and you push them in slightly at an angle, SNAP... you'll lose an LED in the faceplate... (which i did)... so i recommend only slightly bending these to fit into the hole.
the vp28 sounds amazing with all the op amps i've tried! ! but the op amps AND THEIR CONFIGURATION definitely change the tone.
i've tried the vp28 with gar2520's and a mix of gar2520 and gar1731... i think i prefer the mix of gar2520 and gar1731... but even their position makes a difference ! i originally chose the 1731 in the position near the input transformer as it was a fatter signal when i was testing vocals through it after i had completed the build... but i just did a test running mixes through with both op amp configurations. although they both sound great... there really is quite a difference ! the 1731 closer to the input transformer really warms things up... but kind of smears the highs a lot like hitting tape... trying the test again with the 2520 closer to the input transformer (which is how dr. bill has his op amps configured (thanks dr. bill!)), it still has the tape like saturation vibe, but without smearing the highs so much! so setting it up that way -- 1731 near the output transformers, gar2520 near the input transformer is brighter and clearer, which i think is better for mix buss. not as muddy, but still technicolor saturated. it sounds incredible! !
thanks so much to jeff who is such an amazing dude. besides offering these amazing sounding circuits, he is a teacher. he almost always responds immediately, which is mind blowing and super human... and he gives you just enough guidance in order for you to learn and figure out more on your own. jeff steiger is a diy guru teacher electronic rock star.
i finished 2 of these with op amps that worked on first fire up. the only thing i had a bit of a problem with is one of the LEDs... in the build guide jeff recommends bending the amber LEDs at 45 degrees... i'd recommend not bending those quite so much... maybe 30 degrees or so... as they lay pretty flat on the board... if they are bent at too much of an angle and you push them in slightly at an angle, SNAP... you'll lose an LED in the faceplate... (which i did)... so i recommend only slightly bending these to fit into the hole.
the vp28 sounds amazing with all the op amps i've tried! ! but the op amps AND THEIR CONFIGURATION definitely change the tone.
i've tried the vp28 with gar2520's and a mix of gar2520 and gar1731... i think i prefer the mix of gar2520 and gar1731... but even their position makes a difference ! i originally chose the 1731 in the position near the input transformer as it was a fatter signal when i was testing vocals through it after i had completed the build... but i just did a test running mixes through with both op amp configurations. although they both sound great... there really is quite a difference ! the 1731 closer to the input transformer really warms things up... but kind of smears the highs a lot like hitting tape... trying the test again with the 2520 closer to the input transformer (which is how dr. bill has his op amps configured (thanks dr. bill!)), it still has the tape like saturation vibe, but without smearing the highs so much! so setting it up that way -- 1731 near the output transformers, gar2520 near the input transformer is brighter and clearer, which i think is better for mix buss. not as muddy, but still technicolor saturated. it sounds incredible! !
thanks so much to jeff who is such an amazing dude. besides offering these amazing sounding circuits, he is a teacher. he almost always responds immediately, which is mind blowing and super human... and he gives you just enough guidance in order for you to learn and figure out more on your own. jeff steiger is a diy guru teacher electronic rock star.
