Yes, All Cee’s are in there.
In the future, I am not going to do anymore special orders of mixing / combining shipping. It’s too difficult to track and breaks the mindless work flow, thereby multiplying time involved by 3x.
Now I know why when you order something from Mouser, if you have a “change request” they will cancel the old order and make a new order.
In the future, I am not going to do anymore special orders of mixing / combining shipping. It’s too difficult to track and breaks the mindless work flow, thereby multiplying time involved by 3x.
Now I know why when you order something from Mouser, if you have a “change request” they will cancel the old order and make a new order.
Thanks x. I understand your dilemma and wouldn't have asked if I had known it was going to put you to so much extra work.
No worries. I learned my lesson 🙂 and will have to make future giveaways as part of my shop as a promotion of some sort in order to handle the logistics of shipping.
The interface for order fulfillment and shipping on Etsy is 1000% easier, faster, better, etc... than that on PP.
The interface for order fulfillment and shipping on Etsy is 1000% easier, faster, better, etc... than that on PP.
X: are you advocating that the BTSB buffer be part of the normal build to achieve the best possible sounding amp?
Hope you’re digging out..
Thanks, Pete
Hi Pete,
As much as I would like to say using the BTSB will make it sound better (it might) I only used it in trying to break the ground loop that I had. If you need a little more gain or if you are using a balanced source, the BTSB can reduce noise pickup. It really is a handy little preamp.
As much as I would like to say using the BTSB will make it sound better (it might) I only used it in trying to break the ground loop that I had. If you need a little more gain or if you are using a balanced source, the BTSB can reduce noise pickup. It really is a handy little preamp.
So your ground loop issue shouldn’t be a common issue with the building of this amp, i.e., the BTSB unit isn’t a necessity? I already have a dedicated preamp (Akitika PR-101).
Thanks
Pete
No, the ground loop has to do with one’s particular setup with regards to the source and how things are wired. Vunce, for example, did not have an issue. Generally, using a single PSU has more potential for ground loops on the input signals. Going to a dual mono PSU and amp is generally better.
The ground loop was still relatively low at -65dB (acceptable to many people) and only audible with ear pressed to the speaker cone. With the balanced source into the BTSB, it was maybe -97dB basically inaudible.
Besides good ground wiring topology schemes (star ground and use GLBs between analog ground 0v and dirty ground/chassis ground), sometimes ground loops come down to the types of opamps we have in our preamps or front end. FET based input stages have essentially zero current and thus less prone to ground loops compared to BJT input gates.
The ground loop was still relatively low at -65dB (acceptable to many people) and only audible with ear pressed to the speaker cone. With the balanced source into the BTSB, it was maybe -97dB basically inaudible.
Besides good ground wiring topology schemes (star ground and use GLBs between analog ground 0v and dirty ground/chassis ground), sometimes ground loops come down to the types of opamps we have in our preamps or front end. FET based input stages have essentially zero current and thus less prone to ground loops compared to BJT input gates.
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Thanks X. Yup, star grounds are part of my routine building behaviors and have had to use GLBs on occasion when nothing else seemed to work. I went ahead and ordered 5 sets of boards made so you might as well as pull my name from the freebie list. I’ll order the BTSB SMD board if any noise issues can’t be solved any other way. I use SE in & out.
Regards & dug out,
Pete
Last week, both Digikey and the Mouse had 7293V's in stock. Today,they're both out and backordered until April! Fortunately, Arrow had a few left.
Boards arrived today
Everything looks great, and the Mouser Oder arrived the same day, except no TDA7293's... might have to try my previous Ebay purchase which are of doubtful pedigree... Sixto
Everything looks great, and the Mouser Oder arrived the same day, except no TDA7293's... might have to try my previous Ebay purchase which are of doubtful pedigree... Sixto
Hi,
Looks like the board was made using kicad (?). What is the recommended way to import/open the gerber files?
Newbie here, tried with the import function in eagle but got weird results with some lines/traces going completely off the board.
As far as I understood, 'F' files are for the top layer, 'B' for the bottom one.
Shall I install kicad instead?
Thanks in advance for the info.
I've bought (and sold) plenty of IC's on eBay that weren't fake. Ask questions, and use good judgement. The ones in the link posted do not appear to fake. They are horizontal package, though.