Yeah, I'm looking at the Alex Cavalli OTL that's a bit more "over the top" than it's predecessor, the "Heretica IIIl". VERY good buffers, dependent on power supplies, as usual.
Or maybe one of those "Moskido" hybrid amps to get some of that "valve magic" at the drive end. (It's got the Aikido front end, Mosfet O/P stage) - no buffer required for the LS at all.
Or maybe one of those "Moskido" hybrid amps to get some of that "valve magic" at the drive end. (It's got the Aikido front end, Mosfet O/P stage) - no buffer required for the LS at all.
Lightspeed remote control
Hi folks,
I have finished building and testing the infra-red transmitter and receiver boards for the Lightspeed remote control now, and they are both behaving properly, so no layout errors.
Unfortunately I have a very busy week at work this week so it may be Saturday before I can finish the application notes. Now that all boards are verified I will also post a materials list on the thread so those of you who have ordered circuit boards can begin acquiring materials.
If all goes according to plan and I get the application notes finished on Saturday, I will start shipping boards on Monday and Module shipments should start the following week.
Regards
Paul
Hi folks,
I have finished building and testing the infra-red transmitter and receiver boards for the Lightspeed remote control now, and they are both behaving properly, so no layout errors.
Unfortunately I have a very busy week at work this week so it may be Saturday before I can finish the application notes. Now that all boards are verified I will also post a materials list on the thread so those of you who have ordered circuit boards can begin acquiring materials.
If all goes according to plan and I get the application notes finished on Saturday, I will start shipping boards on Monday and Module shipments should start the following week.
Regards
Paul
The Silonex LDR's have a 1% positive temperature coefficient -- here's an idea to compensate:
Temperature Compensated Precision Current Source:
Temperature Compensated Precision Current Source:
An externally hosted image should be here but it was not working when we last tested it.
hi george,
i want to thank you for sharing your wonderful preamp! all i can say is WOW! ive been running the lighspeed or a few months now and every time i take it off....thres just no comparison!it brought a huge improvement on my system! im running it on battery! my current system is a pp6v6 ala music machine, lightspeed, modified cheap cs4397 dac, and ob speakers!
i want to try the tube output stage for my dac but im afraid the output impedance is too high with 70ohm...is there any modification that can be done? here is the scheme of my amp and the tube output stage for the dac....
amp..... http://audiotropic.net/Projects/mmAudio.html
dac...... http://lampizator.eu/LAMPIZATOR/LAMPUCERA/MAX/IMG_5143.jpg
thanks to all who have contributed on this thread!
ivan
i want to thank you for sharing your wonderful preamp! all i can say is WOW! ive been running the lighspeed or a few months now and every time i take it off....thres just no comparison!it brought a huge improvement on my system! im running it on battery! my current system is a pp6v6 ala music machine, lightspeed, modified cheap cs4397 dac, and ob speakers!
i want to try the tube output stage for my dac but im afraid the output impedance is too high with 70ohm...is there any modification that can be done? here is the scheme of my amp and the tube output stage for the dac....
amp..... http://audiotropic.net/Projects/mmAudio.html
dac...... http://lampizator.eu/LAMPIZATOR/LAMPUCERA/MAX/IMG_5143.jpg
thanks to all who have contributed on this thread!
ivan
Guys if you have one of my production Lightspeed Attenuators you can plug one of these straight in they have the right size plug and polarity and come with a fast charger, I've had mine on for days before needing a re-charge, As for the sound, (how did I know you were going to ask that) I and my friends are in two minds if we can hear much difference from the 12vdc regulated linear 300mA wall wart. we think there may be a ever so slight difference but none is game to put up their hand and say what.
http://cgi.ebay.com.au/12V-Lithium-...286.c0.m14&_trkparms=66:2|65:10|39:1|240:1318
Cheers George
http://cgi.ebay.com.au/12V-Lithium-...286.c0.m14&_trkparms=66:2|65:10|39:1|240:1318
Cheers George
hey guys,
i have not tried the mains solution as i have a couple of 12v car battery laying around...... with regards to how long do i need to charge it, i have it powered up 24hours for a week! when i measured the battery its initial reading was 12.69vdc after a week of 24hr usage it measures to about 12.300 volts! so i guess once a week with the unit powered on for 24 hours!
my implementation is quite rude just a 7805 regulator with 1000uf on input and 470uf on output! no connectors just straight to the battery terminals!
http://www.tkk.fi/Misc/Electronics/circuits/psu_5v.html
thanks,
ivan
i have not tried the mains solution as i have a couple of 12v car battery laying around...... with regards to how long do i need to charge it, i have it powered up 24hours for a week! when i measured the battery its initial reading was 12.69vdc after a week of 24hr usage it measures to about 12.300 volts! so i guess once a week with the unit powered on for 24 hours!
my implementation is quite rude just a 7805 regulator with 1000uf on input and 470uf on output! no connectors just straight to the battery terminals!
http://www.tkk.fi/Misc/Electronics/circuits/psu_5v.html
thanks,
ivan
Here's my build so far...
Lightspeed Attenuator
I've got the pot, just need to hook it up. I'm going to get a nice little hammond extruded chassis, and some rca jacks.
Lightspeed Attenuator
I've got the pot, just need to hook it up. I'm going to get a nice little hammond extruded chassis, and some rca jacks.
i think the car battery has an ampere rating of about 200 ah. i guess it is safe cause ive been running the lightspeed 24/7 without any problems! i have no fuse protection on my supply! my build was just to try out the lightspeed it was a very crude build but when i heard it,
i didn't expect it to be that good.(awesome)! i just put a heatsink on the regulator!
i didn't expect it to be that good.(awesome)! i just put a heatsink on the regulator!
hey fellas,
i want to try a tube output stage for my dac and it has 70ohm output impedance! i know its in the high side and the lightspeed will have a hard time driving it. can i bump up the output cap of the output stage from say 2.2uf til 10uf..... i apologize for all the newbie questions!
thanks,
ivan
i want to try a tube output stage for my dac and it has 70ohm output impedance! i know its in the high side and the lightspeed will have a hard time driving it. can i bump up the output cap of the output stage from say 2.2uf til 10uf..... i apologize for all the newbie questions!
thanks,
ivan