[rockadanny]

Something like these:

These RCA shorting plugs are a dead short

http://www.takefiveaudio.com/mall/shopexd.asp?id=1416



1. OK to put these on my Mapletree 2A/SE Linstage?
    Any potential harm done?

2. Have you done this for better audio on your Mapletree or other pre?

    As per TFA:
   

Inserting these plugs will short-circuit the input and stop any RF noise from getting inside the circuit. With the shorting plugs installed you will improve the S/N ratio which can lead to a dramatic improvement in sound quality. If the inputs on your particular preamp use relays to short them when not in use these plugs will offer no sonic benefit.

[WireNut]

Hmmm. Interesting that Take Five sells those now. I got this recipe off of their site about a year ago and that work great on my audio research LS7 preamp. Why they choose the 470 ohm resistor I don't know but they work fine.

The link is still up under DIY Recipes and tips. Cost me about $1.50 each to make.
http://www.takefiveaudio.com/mall/shopcontent.asp?type=RCA_Input_shorting_plugs

I've also used the dead shorting plugs in the past on a different preamp. I've never experienced any problems using either type. I don't use them any more because all my inputs are being used.

[rollo]

Hmmm. Interesting that Take Five sells those now. I got this recipe off of their site about a year ago and that work great on my audio research LS7 preamp. Why they choose the 470 ohm resistor I don't know but they work fine.

The link is still up under DIY Recipes and tips. Cost me about $1.50 each to make.
http://www.takefiveaudio.com/mall/shopcontent.asp?type=RCA_Input_shorting_plugs

I've also used the dead shorting plugs in the past on a different preamp. I've never experienced any problems using either type. I don't use them any more because all my inputs are being used.

Good question about resistor. I use shorting plugs on all unused inputs to good affect. Quiet and hear more information.




charles

[Speedskater]

I was just reading about a good pre-amp decades ago that provided shorting plugs so that when you turned the input selector past an unused input, you wouldn't get a pop.

[SteveFord]

Would this cure bleed-through with my tuner (using phono or CD, inbetween cuts you can hear the tuner)?

[Speedskater]

No, it's for unused input jacks.

bleed-through is a different problem, that sometimes is hard to cure.

[SteveFord]

Okay, thanks.
I will turn the tuner off.

[WireNut]

Hi Steve,

I have a couple pair you can have, If interested PM me and I'll mail them to you.
BTW, I Got my SFL-2 back up and running. I missed that sucker. 
I love see'n those 8 tubes glow again 

WN

[SteveFord]

Will do.
Congrats on the Sonic Frontiers - I stray every so often but that's a keeper!

[SteveFord]

Wirenut came through and sent me a care package of them and it cut the tuner bleed-through down to just about nothing.
Thank you so much!