Quote from: Katoda on January 31, 2018, 09:26:57 AMWhat is it called?
A jack like this one, but a mono version. Or stereo, doesn't matter. Plastic 6.3 mm jack
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Show posts MenuQuote from: Katoda on January 31, 2018, 09:26:57 AMWhat is it called?
A jack like this one, but a mono version. Or stereo, doesn't matter. Plastic 6.3 mm jack
Quote from: Katoda on January 24, 2018, 04:31:11 AMOK will watch for that. I did take my drill charger apart and it seemed to just have a transformer, some resistors and diodes i.e. its basically a rectifier but who knows what circuitry is in the drill itself. The 12v supply did charge the drill but might get an aftermarket charger for it. And will stay away from chargeable amps for now
AFAIK most chargers supply pulses at a certain frequency, varying the amount of current and voltage that goes into the battery in relation to the charge. Connecting a battery straight to DC might damage it. If you do decide to put a charger inside an amp, be wary of possible EMI issues, as the pulsating high current will probably radiate a lot of interference.
Quote from: flester on January 16, 2018, 02:10:25 PMWorks as a harmonica amp too. I made the mic using a headphone speaker. The black box on the right contains a Kemo preamp module, needed to overdrive the amp. A Danelectro overdrive pedal works too. https://flic.kr/p/22mhiVvQuote from: phatt on January 12, 2018, 08:14:07 AMA friend has a 12" guitar speaker I can use. Time for a bit of joinery I think
Hey some nice blues riff there :tu:
BTW, looks like you are driving a hifi type speaker box,, if so then be aware they are woofers and generally have a low SPL,, a real guitar speaker will give a much bigger sound,, louder per watt of input.
Phil.
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Quote from: phatt on January 12, 2018, 08:14:07 AMA friend has a 12" guitar speaker I can use. Time for a bit of joinery I think
Hey some nice blues riff there :tu:
BTW, looks like you are driving a hifi type speaker box,, if so then be aware they are woofers and generally have a low SPL,, a real guitar speaker will give a much bigger sound,, louder per watt of input.
Phil.
Quote from: phatt on January 12, 2018, 09:58:09 PMDidnt physically break but would not conduct.
Awe shucks Enzo,,you talkin bout me again? :lmao:
My problem is that a store that used to stock all the small Alpha pots went broke and now I have to use what ever I can get.
One day I'll have to bite the bullet and buy online I guess.
@ Flester; When you say they fell apart,, I hope you are aware those pot lugs are rather delicate so don't stress them too much and don't apply heat for too long when soldering.
I've used cheap alpha pots for years and some last longer than others.
Phil.
Quote from: flester on January 03, 2018, 04:32:52 PMHeres a video with my lap steelQuote from: Katoda on January 02, 2018, 08:37:37 AMToday i added a DC jack to use a 12v supply or the 9v battery. 12v fattens and cleans up the sound nicely at minimum gain. Also screwed the board in place and used hot glue here and there so nothing moves that shouldnt.
Oh right, sorry, I wasn't looking at the schematic, didn't see that the gain control was actually feedback control. For that configuration you might need an anti-log pot. Also, datasheet specifies you should use a capacitor in series with the pot, but that's not really the problem.
For the pots - I usually use Alpha brand, they're cheap and of all-right quality.
Sorry I couldn't be of more help, good luck.
Im guessing any 1k pot would be an improvement but will try antilog and also linear.
Now planning MkII. Will post final schematic and sound samples in due course
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Quote from: tonyharker on January 07, 2018, 12:40:41 PMWhoa! I thought i had fixed my spelling. Anyway, dont have the board. Will look around the EMG site. The local junk shop just had a box of these with several sets jumbled up so some key parts are missing. I thought these might be useful for my DIY lap steel as it needs a bridge pickup. https://flic.kr/p/eh33nk. It doesnt sound as good through my LM386 amp as my Hofner Shorty which has a humbucker in it.
Is this an EMG 81? If so you need the connection board as shown here: http://www.emgpickups.com/guitar/humbucking/active-humbucking/81.html . Have you got it?
Quote from: flester on January 07, 2018, 11:56:10 AM
This does have preamp so it is on topic. I got 2 of these EMG active humbuckers in a box with assorted wiring and pots. Link to photo below. I do get low level sound but the battery has no effect. Any ideas? Of course there may be good reason why they were on sale in a junk shop.
Presume it needs 9v, 0v and Signal.
https://1drv.ms/i/s!Ahfhrrb-UXCajEoaFyNj07ttW7bv
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Quote from: Katoda on January 02, 2018, 08:37:37 AMToday i added a DC jack to use a 12v supply or the 9v battery. 12v fattens and cleans up the sound nicely at minimum gain. Also screwed the board in place and used hot glue here and there so nothing moves that shouldnt.
Oh right, sorry, I wasn't looking at the schematic, didn't see that the gain control was actually feedback control. For that configuration you might need an anti-log pot. Also, datasheet specifies you should use a capacitor in series with the pot, but that's not really the problem.
For the pots - I usually use Alpha brand, they're cheap and of all-right quality.
Sorry I couldn't be of more help, good luck.