ramm440

Responses from ramm440

Splitter on gpa 555!pre amp output
Thanks! Appreciate that! Polk customer service sucks for old stuff. Sounds like their in a rain forest country. Calling Adcom just want to sell me a different amp! Wtf  
Splitter on gpa 555!pre amp output
So I removed the inner connector cable and it has a box on one end saying “polk Audio SDA Non-Common Ground Amplifier Interface” Does anyone know if because I had two GFA 555s bridged it causes a need for a non common ground cable? Thanks  
Splitter on gpa 555!pre amp output
Thank you this helps tremendously. Now I am trying to remember about the 2 Polk SDA 2Bs. I think the hifi store I bought them from sold me a different interconnect cable that connects the two speaker to each other after I bought the second amp. I ... 
Splitter on gpa 555!pre amp output
I am trying to play all 4 at the same time using both GFA 555s. I have been running them in mono and wired as per the manual states. I am trying to run them both amps independently in stereo using the GFP 555 and remove the GFS-3 speaker selector.... 
Splitter on gpa 555!pre amp output
Keep remembering stuff because its been so long since I set this up. I also have an Adcom GFS-3 speaker selector in place. It has one input that would accept only one amp. I guess if I’m really wanting to separate the two 555s the selector needs t... 
Splitter on gpa 555!pre amp output
My manual states output impedance of 100ohms  
Splitter on gpa 555!pre amp output
The pre-amp is a GFP-555. Would you think/guess this is a better way to run these two amps vs bridged in mono? I will search for the GFPs output specs. Thanks  
Adcom GFA 555 II
I guess I been screwing up since 1990 running 2 gfa 555s driving two 8ohm speakers and two 4ohm speakers? There is some kinda special cord I was sold back then to mix 4s with 8s?  
Adcom GFP-555 II
Tech3149…Did the deoxit and no more static! Thanks … I see what you meant about the mechanical switch and slide ribbon now… bought this new in 1989. Not sure if I should use the main or bypass output. Is the sound much cleaner on bypass?  
Adcom GFP-555 II
Thanks any desired pre amps for 2 gfa 555s with some big Polk and yamaha speakers you recommend?  
Adcom GFP-555 II
I guess as jb52 recommended Deoxit maybe the Deoxit D5 is best? I    
Adcom GFP-555 II
I appreciate all the input from everyone and will take the time to go internally with some tuner spray to see if this remedies the intermittent static at the listening selector switch. Tech3149 your saying the cleaning may be needed at the rear of... 
Adcom GFP-555 II
Whats a good spray? I will try again Thanks!  
Adcom GFP-555 II
I have from the outside pulling the knob and felt but still there. Do I need to go internal to do this on a gfp 555 II?