DIY Phono Loading Plugs Question


Are Radio Shack Resistors  appropriate for making loading plugs?  I've been running my cart  at 47k ohms with good results. However, for the fun of it last night,  I tried my 470 ohm plugs and the sound seemed to have more focus. It took the brightness out of Supertramp "Breakfast In America". which is what I was hoping for. Playing other records I noticed a pleasant sound. Don't know if it was better. But don't think it was worse either. That's when I found the Zyx recommended load of >1000. So I am going to make a plug with these resistors. They are 1/2 watt 5% tolerance. What say you? Get better resistors?
artemus_5

Showing 4 responses by artemus_5

@millercarbon, I pretty much knew the answer when I asked the question. But I had to ask just to make sure.
@chakster  OK I found my Zyx box and spec sheet. It listed >100 ohm which I assume means over 100. I was using the 470 ohm which came with the phono preamp. So I may not need to make any other plugs after all. Preamp (JLTi) came with  100 & 470 ohm plugs. Still. all info appreciated

@chakster I thought you also had the JLTi. I was using the 470 ohm plug which came with mine. I also got a 100 ohm with it. So I may be good

I think you have the later JLTi from Australia. I see Mr Rasmussen has "updated" the JLTI. I’ve wondered if the new one is better? He offers an upgrade of the older ones. Of course, I suspect he will say it is much better than mine. So I haven’t asked him. Do you have any insight?
@chakster @pryso  Since mine didn't come with a 47K plug I figured that was the default loading. I have it switched to high gain. Again with no problems. FWIW both my wife and I liked it better without loading. Bigger  soundstage. The 470ohm plug offers a more focused sound which is somewhat alluring. But speakers do a disappearing act with no loading. Much wider and deeper soundstage.

I bought mine from Jay @ Audio Revelations shortly after the shootout with several other phono preamps, most a lot more expensive. Jay picked up that line shortly thereafter. I didn't buy the OB power supply because the cost was more than the benefit which everyone had said was a tradeoff at best. Thanks for your help Gentlemen. Guess I'll call Joe and check on the upgrade & PS.