geraldo Posted April 29, 2021 Share Posted April 29, 2021 Hi, I would love anyone's advice on helping me properly set up my Heresy 2's to my Marantz 2230 amplifier. So, I have tried to connect the wires to the terminals and the amp but I'm getting a good amount of crackling. I'm new to the home audio game and have an affinity for vintage systems. However, I am a bit frustrated because I am quite certain I may just be connecting the system improperly. When I turn on The amp I immediately get loud crackling (the volume isn't even turned up at all!) If this helps at all, the wires I am using are Belden 9497 Audiophile Speaker Cable Wire. Any help would be greatly appreciated. 1 Quote Link to comment Share on other sites More sharing options...
Frank1938 Posted April 29, 2021 Share Posted April 29, 2021 Hello, that amp dates from 1974. Do you know if it has been gone over by a tech? If not, you should use deoxit on all of the pots and twist them left and right several times. Take the cover off so you can get at the pots. If that doesn't correct it, you probably have one or more components going bad. 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted April 29, 2021 Share Posted April 29, 2021 4 hours ago, geraldo said: When I turn on The amp I immediately get loud crackling (the volume isn't even turned up at all!) does the amplifier do the same crackling sound without the speakers being connected ? 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted April 29, 2021 Share Posted April 29, 2021 Welcome! Make certain power is off when connecting. Post a picture of rear connection. Remember just one strand of wire gone astray is not good. Deoxidize... @geraldo 1 Quote Link to comment Share on other sites More sharing options...
geraldo Posted April 30, 2021 Author Share Posted April 30, 2021 Thank you all for the replies, it is greatly appreciated. I believe it's just the amplifier (the wires are brand new) and I've tested the speakers separately and they worked just fine.Here's a photo of the connections.Truly appreciate all of the help.Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
MeloManiac Posted April 30, 2021 Share Posted April 30, 2021 Buy a can of deoxit electronic spray, it costs around 5 to 10 dollars. Take your amp and take it off the powergrid. Open it and find the pots of the volume, balance, treble and basd etc. Spray them precisely and turn them back and forth to get rid of dirt, dust and oxidation. It should improve a lot. You may have to repeat this after a while. This is the most likely cause. Your combo will blow you away! 2 Quote Link to comment Share on other sites More sharing options...
geraldo Posted April 30, 2021 Author Share Posted April 30, 2021 (edited) Thank you so much guys! So, it seems that my best best (for now) is to deoxidize the interior with an electric spray and hopefully this will make the sound (namely the crackling) a lot better? Again, my apologies for the lack of knowledge on this topic. I'm here to learn--and you all have been incredibly helpful, actually. Best, GR Edited April 30, 2021 by geraldo 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted April 30, 2021 Share Posted April 30, 2021 You want to spray specifics like volume control potentiometer, etc, not just randomly spraying inside. There should be YouTube on the subject. Quote Link to comment Share on other sites More sharing options...
geraldo Posted April 30, 2021 Author Share Posted April 30, 2021 Understood. Makes perfect sense to me. Thanks so much guys. If there's any more info you could think of sharing with me it will be greatly appreciated.Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Tarheel TJ Posted April 30, 2021 Share Posted April 30, 2021 I have a 2230 as well. Mine crackles a fair bit on startup. I usually turn it on with the speaker selector turned to “off”. Let the amp settle for a minute or two and then turn the speakers to “on”. As others have mentioned, deoxit on the pots also helps. If you are so inclined, you can get a full rebuild kit from irebuildmarantz.com . I just got started rebuilding mine last week. It will be like a brand new unit when done. You will need to have some experience soldering parts to circuit boards to do this yourself. 1 Quote Link to comment Share on other sites More sharing options...
MeloManiac Posted May 1, 2021 Share Posted May 1, 2021 12 hours ago, Tarheel TJ said: I just got started rebuilding mine last week. It will be like a brand new unit when done. You will need to have some experience soldering parts to circuit boards to do this yourself. And is that a smart thing to do? On every level, the answer is YES ! 1 Quote Link to comment Share on other sites More sharing options...
Peter P. Posted May 1, 2021 Share Posted May 1, 2021 Try connecting the speakers to the other set of terminals in the photo to see if the problem persists. Quote Link to comment Share on other sites More sharing options...
Marvel Posted May 1, 2021 Share Posted May 1, 2021 One of my H/K 430s needs certain caps replaced. As mentioned above, When I first turn it on I don't adjust anything for a couple of minutes, or adjusting the volume will be super loud and scratchy... After a couple of minutes, it can be adjusted with no issues. It's currently awaiting some updating. Quote Link to comment Share on other sites More sharing options...
PieterH Posted May 4, 2021 Share Posted May 4, 2021 (edited) Hello Geraldo, I have cleaned my Marantz 2235 a few weeks ago. I noticed on some forums and Deoxit reviews it was strongly mentioned by some that you need two Deoxit products. The normal Deoxit D5 (red can) and the green Deoxit F5 can (faderlube), which you use after as coating. Apparently if you don't use the Faderlube after, you need to repeat the cleaning every once in a while. I bought the small size red can, which is enough. I cleaned every pot twice before closing and moved the slider and the knobs like 50 times per cleaning to make sure the dirt is removed. You will probably feel the knobs rotating more easy after. I found the following video the most easy to see on where to clean: I suggest you also read the following post on cleaning, it will give you an idea on what to do and what not to do: https://audiokarma.org/forums/index.php?threads/the-idiots-guide-to-using-deoxit-revisited.207005/ As mentioned by others, I have also new caps, but the cleaning with Deoxit is a very good start. For me it fixed some sound issues. Edited May 4, 2021 by PieterH 1 Quote Link to comment Share on other sites More sharing options...
MeloManiac Posted May 4, 2021 Share Posted May 4, 2021 1 hour ago, PieterH said: As mentioned by others, I have also new caps, but the cleaning with Deoxit is a very good start. For me it fixed some sound issues. In my case, my HK430 's crackle was gone immediately, but then it also started sounding much brighter *a few days later*! Quote Link to comment Share on other sites More sharing options...
Islander Posted May 4, 2021 Share Posted May 4, 2021 Volume and tone potentiometers (pots) work by moving a slider around an arc-shaped piece of carbon/graphite. When the slider is near the contact point, the current travels only a short distance, so resistance is at its lowest, meaning volume will be highest. As the knob is turned toward Low volume, the slider is moved around the arc, so the current has to travel further along the resistive material, increasing the resistance through the pot, lowering the volume. That’s roughly how they work. The point is that after many years, some of the resistive material is worn off the arc and builds up where it doesn’t belong, causing crackling noises. The DeOxit can rinse that out, plus any actual dirt that has found its way into the pot. This can restore the operation of the pots to something like when they were new. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.