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Post by karma67 on Jun 13, 2021 8:29:06 GMT
Fresh after doing my crossovers im ready for another challenge,oli kindly agreed to sell me a BB3 board and here it is,I've ordered up all the other parts and i'm keen to get stuck in. Not having built anything like this before please check in regularly as im bound to ask stupid questions! Actually im rather excited if the truth be known.
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Bigman80
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Post by Bigman80 on Jun 13, 2021 9:30:02 GMT
I am excited too Jamie. It's always nice to see someone enthusiastic putting something together themselves. You have our full support should you have a question. Just ask away! BTW, some record cleaning fluid and toothbrush will get 90% of any excess residue off the PCB when you have finished soldering the Diodes in place etc. May need a couple of passes but it does work well. Oh, yes....your PCB is No.49, so i have made a note of it in my book too. I like to keep track  |
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Post by macca on Jun 13, 2021 11:19:49 GMT
That table looks exactly like my old school desk. Except without the graffiti.
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Post by karma67 on Jun 13, 2021 11:33:56 GMT
That table looks exactly like my old school desk. Except without the graffiti. ha ha its the top of a mordaunt short pageant 2 cabinet |
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Post by macca on Jun 13, 2021 12:02:12 GMT
they've seen some action then!
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Post by karma67 on Jun 15, 2021 17:38:49 GMT
just forward thinking here,what way round do the fet boards go? fets facing inwards or outwards?
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Bigman80
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Post by Bigman80 on Jun 15, 2021 17:46:52 GMT
just forward thinking here,what way round do the fet boards go? fets facing inwards or outwards? I'll post a pic in a bit |
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Post by Bigman80 on Jun 16, 2021 9:44:37 GMT
just forward thinking here,what way round do the fet boards go? fets facing inwards or outwards? This way  |
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Post by firebottle on Jun 16, 2021 12:08:29 GMT
On both sides, so in effect one faces inwards and one faces outwards.
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Post by karma67 on Jun 19, 2021 7:21:38 GMT
thanks alan.
does anyone have a link to what diode goes in ZD1P? its spec on the BOM is 2V 0.5w but no mouser or farnell part numbers are listed.
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Post by Bigman80 on Jun 19, 2021 7:26:28 GMT
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Post by karma67 on Jun 19, 2021 12:22:29 GMT
thanks mate, so far so good with the stuffing  had to stop as i need another valve socket,one of the 3 from hifi collective has a missing leg,i typically noticed it after soldering the socket in!   |
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Bigman80
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Post by Bigman80 on Jun 19, 2021 12:36:49 GMT
Looking tidy.
Did you measure the signal caps?
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Post by karma67 on Jun 19, 2021 13:07:14 GMT
Looking tidy. Did you measure the signal caps? yes ,i got them as close a match as i could,i reckon id need to buy loads to perfectly match them,i may do this down the line when its run in.
regarding the semi conductors to heatsinks, i assume you use thermal past and some sort of nut/washer arrangement??
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Post by Bigman80 on Jun 19, 2021 13:09:03 GMT
Looking tidy. Did you measure the signal caps? yes ,i got them as close a match as i could,i reckon id need to buy loads to perfectly match them,i may do this down the line when its run in.
regarding the semi conductors to heatsinks, i assume you use thermal past and some sort of nut/washer arrangement??
Nut, washer and isolator. You don't have to isolate them IIRC, but that will make the heatsink live. I do isolate them as I like to make sure everything is as safe as humanly possible |
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Post by karma67 on Jun 20, 2021 6:47:39 GMT
cheers ,thats sorted now thanks. next question is can you link to the on/off switch at the back please. |
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Post by Bigman80 on Jun 20, 2021 7:30:42 GMT
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Post by karma67 on Jun 20, 2021 7:45:35 GMT
yes i assume thats whats at the back?? |
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Post by Bigman80 on Jun 20, 2021 7:49:15 GMT
yes i assume thats whats at the back?? Nope. Power switch in the front....see the round hole? The rear has a Schaffner IEC Inlet, no switch  |
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Post by Bigman80 on Jun 20, 2021 7:52:43 GMT
Like this:  |
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Post by karma67 on Jun 22, 2021 16:00:19 GMT
well it looks like my transformer has arrived and is in the post office waiting for collection,all things being well i hope to have this up and running at the weekend,stand by oli for some more stupid questions lol.
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Post by Bigman80 on Jun 22, 2021 16:58:03 GMT
well it looks like my transformer has arrived and is in the post office waiting for collection,all things being well i hope to have this up and running at the weekend,stand by oli for some more stupid questions lol. Haha, no worries mate, I'm at work all day Saturday so I'll be available 🤣 |
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Post by mikeyb on Jun 22, 2021 18:10:09 GMT
stand by oli for some more stupid questions lol. I was once told there are are no stupid questions, only stupid answers 😉😊 |
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Post by karma67 on Jun 23, 2021 18:11:26 GMT
all the parts have arrived now so i got stuck in after work, fet boards done,replacement valve socket and heat sinks,just got the clarity caps to solder in. i have to say im really enjoying this.
mock up case also done today at work.
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Post by karma67 on Jun 23, 2021 18:19:16 GMT
forward thinking for the weekend is there a check list of voltages to measure to confirm all's well?
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Post by Bigman80 on Jun 23, 2021 18:26:42 GMT
forward thinking for the weekend is there a check list of voltages to measure to confirm all's well? I'll put a couple of check points up tomorrow. Looking nice. Just touch up my little solder spike on that resistor.....can't believe I missed it 😮 Glad you're Enjoying the build! |
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Post by karma67 on Jun 24, 2021 15:49:35 GMT
thanks oli,
ive just been sent what look like orange led's certainly not yellow which is what i ordered! i believe the led's only come on in moving magnet mode,is this right? whats the default when no switch is fitted?
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Post by Bigman80 on Jun 24, 2021 16:15:41 GMT
thanks oli, ive just been sent what look like orange led's certainly not yellow which is what i ordered! i believe the led's only come on in moving magnet mode,is this right? whats the default when no switch is fitted? MC, but fit the switch etc coz it's a ball ache digging all the guts out just to fit two LEDs later. I can send some yellows if you want them |
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Post by macca on Jun 24, 2021 16:29:15 GMT
Orange is better than yellow, you can't get better than orange. You dropped on there if you ask me.
LED order from worst to best:
Blue - Green - Red - Yellow - Orange.
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Post by Bigman80 on Jun 24, 2021 17:00:51 GMT
Orange is better than yellow, you can't get better than orange. You dropped on there if you ask me. LED order from worst to best: Blue - Green - Red - Yellow - Orange. Ah, the LEDs are for the relays on the PCB, not for a on/off indicator for the outside of the case. |
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had to stop as i need another valve socket,one of the 3 from hifi collective has a missing leg,i typically noticed it after soldering the socket in!
