Hi - Do I need to modify the spreadsheet where you had entered my name or enter seprately for my requirements? I think you can post approximate expected costs based on the minimal requirements. Also expected time frame of ordering as I expect the proto testing to be completed within next 10 days as the boards should have been with the testers ?
kannan
kannan, go ahead and modify for your new requirements. I was just putting them there to speak to who had the early boards, and as an example.
I don't think any of the internationally shipped boards have arrived yet.
I personally would like to see several more builds before I order lots of boards.
I am targeting a price of 4.50 for hypnotize and 6.00usd for mesmerize and shipping will be $5.00 for low quantity orders. This assumes we don't go through more re-designs, retools, etc. This price will allow me to cover pcb, paypal, and some float to give a diyaudio donation. I think this is a reasonable cost. It assumes around a hundred boards of each.
Tea-Bag
I need a column for country in the spreadsheet- to know the geographic distribution. This was in the original wiki
kannan
kannan
I dont think it's needed. The shipping will be the same regardless, to help spread the cost for all buyers.
Nice concept - i really like it to make all GB equal. Country column can still be useful to help logistics if needed. It can also help you unload the shipping burden.
Nice going after a month of inaction
Kannan
Tea-Bag,
I have altered the spreadsheet to add to the one already sent - talking of which it has not yet arrived. We seem to be having some postal strikes over here so it depends on what route the package takes as to when it might arrive.
I am also waiting for other stuff (for the boards) from the States - hopefully all will arrive soon and I can add my testing to the pool.
Alan
I have altered the spreadsheet to add to the one already sent - talking of which it has not yet arrived. We seem to be having some postal strikes over here so it depends on what route the package takes as to when it might arrive.
I am also waiting for other stuff (for the boards) from the States - hopefully all will arrive soon and I can add my testing to the pool.
Alan
Thanks to Salas's suggestion and CRT's forethought I was able to use 3 100R dales I had in my bin in place of the 68Rs that did not arrive. Measured out to 33.9R. I'll get back to building now.
Well alright!
It's making music as I type.
Went together nicely, NO RELAY ISSUES. For the relays I used a fairly close pair of BC550b. The voltages were 10.8 and 11.4 the offset was -1 and -3 mv.
One issue with the BOM, the little white females don not fit in the board mounted males. The females have little guides on the sides and the males are to wide to accept them. No big deal, I just trimmed them off and they work great.
The sound is surprisingly good right from the getgo. I notice more detail although the soundstage is a little narrow. I am not using a pot and have it jumpered ala CRT. I am using my PC and a Bantam DAC so do not want to make any critical judgments as of yet. I need to finish my Lightspeed attenuator and connect to my good DAC and CD player.
I have to get back to work, more later.
It's making music as I type.
Went together nicely, NO RELAY ISSUES. For the relays I used a fairly close pair of BC550b. The voltages were 10.8 and 11.4 the offset was -1 and -3 mv.
One issue with the BOM, the little white females don not fit in the board mounted males. The females have little guides on the sides and the males are to wide to accept them. No big deal, I just trimmed them off and they work great.
The sound is surprisingly good right from the getgo. I notice more detail although the soundstage is a little narrow. I am not using a pot and have it jumpered ala CRT. I am using my PC and a Bantam DAC so do not want to make any critical judgments as of yet. I need to finish my Lightspeed attenuator and connect to my good DAC and CD player.
I have to get back to work, more later.
If with no pot, you should change the 220k down to 22k across the input. You can parallel 22k-27k underneath pcb at the 220k and take it out later. That will have a chance to open your soundstage along the break in time benefits coming in. So the chatter thing is completely erratic. The non chatter outnumbers the chatter by 5 reports to 2. (Me, Crt, Ferds, Grufti, billyk VS Tea-Bag, Kannan_s). Lets include a 150nF ceramic in the bom, for those who gonna sing, and that is all IMHO. If the oscillation is killed from the relay loaded transistor, the non chatter builds against the fixed ones differ to ABSOLUTELY nothing. I assure you. Changes nothing in the signal path.
I feel that the chatter may be due to the relay inductance or property of the relay? Probably let me try some other relay later this week -
Billyk- where did you get the relay - and part number so that I can buy that and try it out. Just to find the cause
kannan
Billyk- where did you get the relay - and part number so that I can buy that and try it out. Just to find the cause
kannan
