|
|
Post by lee on Dec 25, 2023 23:03:49 GMT -6
They kind of do that anyways. its when they slowly creep uncontrollably up to 300mv. You need to leave it continuously on for like 2-3 days for everything to burn in. Matching is important for this and the linearity of the signal. I'm wondering how well they do. Yeah 300mV was definitely my worry. I’ll leave them powered on for three days and just check them every few hours to see how they’re holding up. Thank you. |
|
|
|
Post by audiospecific on Dec 26, 2023 21:59:43 GMT -6
They kind of do that anyways. its when they slowly creep uncontrollably up to 300mv. You need to leave it continuously on for like 2-3 days for everything to burn in. Matching is important for this and the linearity of the signal. I'm wondering how well they do. Yeah 300mV was definitely my worry. I’ll leave them powered on for three days and just check them every few hours to see how they’re holding up. Thank you.
Question is, will it give you a linear signal.
I really find it interesting people go to the trouble of copying a circuit, but not use the same family of transistors as the originals. Its not like they are extinct, and they are a bigger factor in tone than the transformers.
What gets me is that they have to pay royalties to AMS/Neve for the circuit, just like someone having agreements producing a cover song commercially, and they produce this.
|
|
|
|
Post by lee on Dec 27, 2023 12:47:05 GMT -6
Yeah 300mV was definitely my worry. I’ll leave them powered on for three days and just check them every few hours to see how they’re holding up. Thank you.
Question is, will it give you a linear signal.
I really find it interesting people go to the trouble of copying a circuit, but not use the same family of transistors as the originals. Its not like they are extinct, and they are a bigger factor in tone than the transformers.
What gets me is that they have to pay royalties to AMS/Neve for the circuit, just like someone having agreements producing a cover song commercially, and they produce this.
Colin from AML is an occasional contributor here but I'm not sure it's in his nature to get into the weeds of his design choices. I would have guessed the small companies would feel proprietary about this stuff. |
|
|
|
Post by audiospecific on Dec 27, 2023 12:54:16 GMT -6
Question is, will it give you a linear signal.
I really find it interesting people go to the trouble of copying a circuit, but not use the same family of transistors as the originals. Its not like they are extinct, and they are a bigger factor in tone than the transformers.
What gets me is that they have to pay royalties to AMS/Neve for the circuit, just like someone having agreements producing a cover song commercially, and they produce this.
Colin from AML is an occasional contributor here but I'm not sure it's in his nature to get into the weeds of his design choices. I would have guessed the small companies would feel proprietary about this stuff.
It's a disappointment to me because I hold them in good regards. I will still buy my spare parts and transformers from them, but for now, I'm considering their kits not refined enough for me to consider.
|
|
|
|
Post by doubledog on Dec 30, 2023 9:42:35 GMT -6
keep in mind that design choices are not always about what is the best or most optimal part for a circuit. supply chain has become a huge factor in a lot of recent designs (and older designs). if you want longevity you have to either buy a ton of parts and sit on them (not always the best choice) or find a supplier that can reliably supply a part - which may not be your first choice part - for the life of your product. otherwise you end up redesigning the product later (more $$) or retiring it early (like some have).
|
|
|
|
Post by lee on Jan 1, 2024 16:45:20 GMT -6
keep in mind that design choices are not always about what is the best or most optimal part for a circuit. supply chain has become a huge factor in a lot of recent designs (and older designs). if you want longevity you have to either buy a ton of parts and sit on them (not always the best choice) or find a supplier that can reliably supply a part - which may not be your first choice part - for the life of your product. otherwise you end up redesigning the product later (more $$) or retiring it early (like some have). A salient point, my friend. |
|
|
|
Post by audiospecific on Jan 2, 2024 7:09:41 GMT -6
keep in mind that design choices are not always about what is the best or most optimal part for a circuit. supply chain has become a huge factor in a lot of recent designs (and older designs). if you want longevity you have to either buy a ton of parts and sit on them (not always the best choice) or find a supplier that can reliably supply a part - which may not be your first choice part - for the life of your product. otherwise you end up redesigning the product later (more $$) or retiring it early (like some have).
Also, It doesn't help some transistors are going away temporarily so that no lead parts can finally replace them. Some of those t-05 style transistors are more expensive than their to-92 counterparts because of precious metal prices. That is what happened to a lot of premium parts and their prices. For example: Why a silver composite metal film resistor is $10-15 regardless if its surface mount or through hole.
|
|
|
|
Post by lee on Jan 2, 2024 13:49:21 GMT -6
Might as well give an update on these units. Both are installed in the rack and have had days to burn in at this point. I recorded some DI bass with the newer (troublesome) unit yesterday and it appeared to sound and work just great. Although the bias test points are about 2 mV apart on each unit, like 89 vs 91, and every time I tweak them, they sort of refuse to sit at 90 mV (Which audiospecific was saying is probably normal). Is there anything else I should be doing? Or should I just shut up and record stuff and not look back? Maybe they're "done". |
|
|
|
Post by audiospecific on Jan 3, 2024 2:48:11 GMT -6
Might as well give an update on these units. Both are installed in the rack and have had days to burn in at this point. I recorded some DI bass with the newer (troublesome) unit yesterday and it appeared to sound and work just great. Although the bias test points are about 2 mV apart on each unit, like 89 vs 91, and every time I tweak them, they sort of refuse to sit at 90 mV (Which audiospecific was saying is probably normal). Is there anything else I should be doing? Or should I just shut up and record stuff and not look back? Maybe they're "done". you're ok to record. See how it goes. I would record a couple of sine waves at different levels to look at the signal, but you are done with the building phase. |
|
|
|
Post by lee on Jan 3, 2024 16:40:48 GMT -6
Thanks again. Happy to be using these instead of seeing them "up on blocks".
|
|
