georgehifi
Responses from georgehifi
| Lightspeed Attenuator - Best Preamp Ever? John47I supply 220v-240v linear wall warts to the rest of the world. US and Canadian owners purchase their own 110v ones from within North America. Who knows what they are getting from their suppliers, as linear wall warts are getting very hard to... | |
| Lightspeed Attenuator - Best Preamp Ever? B_limoGeorge,Another quick question: would the lightspeed attenuator work well with a prima luna prologue five tube amp? Input impedance 100 kohminput sensitivity 600 mv (the man. site said 600mv on one page, 775mv on another...)Thanks in advance,... | |
| Lightspeed Attenuator - Best Preamp Ever? It would need to be electrically conductive, the only paint I know of that is, is rear window demister paint. Better off lining the whole inside with aluminium foil then it needs to be earthed to all 4 x rca sockets so it gets a system earth. All ... | |
| Lightspeed Attenuator - Best Preamp Ever? 01-15-14: B_limo: George, two questions: does the lightspeed ever need to be recalibrated? It seems like my volume control may be adjusting in larger increments than before...Question 2: is it okay to dress it up a bit? I was thinking about a smal... | |
| Lightspeed Attenuator - Best Preamp Ever? Hi Lacee, I like the Teradac, that's why I posted it up for Lightspeed owners to try, as we are always wanting to try out different things. An smp wall wart will not give noise that you can hear, but it can be seen on the ocilloscope as very high ... | |
| Lightspeed Attenuator - Best Preamp Ever? Lacee hi, first off I'll explain the Lightspeed Attenuator consumes around 50mA max, "you could almost power it by rubbing two sticks together". A 300mA wall wart will power 6 x Lightspeeds. So it's not a question of power, thicker wires or gettin... | |
| Lightspeed Attenuator - Best Preamp Ever? I believe the Teradac power supply (http://www.ab-system.hk/index.php?route=product/product&path=73&product_id=64 ) is a great linear power supply. And at a good price. But from the Lightspeed owners in the US and Canada that have said it'... | |
| Lightspeed Attenuator - Best Preamp Ever? Lacee: also if in doubt if your wall wart was linear or smp. Try to find a portable AM radio and with it tuned off station low down on the dial frequency with the volume up go near to your powered up wall wart with it. You will hear very clearling... | |
| Lightspeed Attenuator - Best Preamp Ever? Lacee hi, are you in the US also, just wondering if your wall wart was smp or linear?Cheers George | |
| Lightspeed Attenuator - Best Preamp Ever? oops just noticed, the first Jameco one may not be linear | |
| Lightspeed Attenuator - Best Preamp Ever? Banquo63: I did a quick search, very hard to find linear ones as they never state if it smp.These are the parameters you should look out for.1: 9vdc-18vdc linear2: can be regulated or unregulated as the Lightspeed Attenuator has it's own internal ... | |
| Lightspeed Attenuator - Best Preamp Ever? Banquo363: This looks very small, and at 500mA indicates to me it's an smp wall wart.Cheers George | |
| Lightspeed Attenuator - Best Preamp Ever? B_limo hi, the smp high frequency rubbish gets into everything even the grounded chassis, interconnects, input and output, even your amps and source can get it via the wiring or even through the air, especially if it's a bad designed one. The AM r... | |
| Lightspeed Attenuator - Best Preamp Ever? Banquo363, you can tell a smp wall wart a couple of ways.One is they are half the weight of a linear, but if you don't have a linear to compare it to then that's hard.The other way is to get an AM radio and go near it tuning up and down the am dia... | |
| Lightspeed Attenuator - Best Preamp Ever? Hi Banquo363, that's great to hear, but I am a bit shocked at the amount of difference you heard. Are you in the US or Canada? Is it possible the 110v wall wart you have is a SMP (switchmode)? As I cannot supply 110v wall warts to the US. I only s... |