Forte Too Posted March 14, 2018 Share Posted March 14, 2018 I have a new (to me) set of Hersey I speakers. I played them with my Mac 6500 at my office and they sounded fine. I brought them home and hooked them up to the Marantz 2330 B, and the problem began. The bass is out of control. I had to turn the bass dial almost all the way to the left. The Marantz amp is factory from the 70's, all original caps. My question is what would cause this? I had the Marantz hooked up to a set of klipsch horns and they sounded ok. No real excess bass. Not the case now. Any ideas???? Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 14, 2018 Share Posted March 14, 2018 1 hour ago, Forte Too said: I have a new (to me) set of Hersey I speakers. I played them with my Mac 6500 at my office and they sounded fine. I brought them home and hooked them up to the Marantz 2330 B, and the problem began. The bass is out of control. I had to turn the bass dial almost all the way to the left. The Marantz amp is factory from the 70's, all original caps. My question is what would cause this? I had the Marantz hooked up to a set of klipsch horns and they sounded ok. No real excess bass. Not the case now. Any ideas???? Are you sure the mids and tweets are playing? Quote Link to comment Share on other sites More sharing options...
willland Posted March 14, 2018 Share Posted March 14, 2018 3 hours ago, Forte Too said: I have a new (to me) set of Hersey I speakers. I played them with my Mac 6500 at my office and they sounded fine. I brought them home and hooked them up to the Marantz 2330 B, and the problem began. The bass is out of control. I had to turn the bass dial almost all the way to the left. The Marantz amp is factory from the 70's, all original caps. My question is what would cause this? I had the Marantz hooked up to a set of klipsch horns and they sounded ok. No real excess bass. Not the case now. Any ideas???? When I had my Marantz 2252B(52w/ch), it unnaturally boosted the bass in my Heresys and had to turn the dial to about 10:00. Maybe these 70's Marantz receivers are designed that way. Maybe your office has more "bass traps" than the room in your home. Not sure. Bill Quote Link to comment Share on other sites More sharing options...
paul79 Posted March 15, 2018 Share Posted March 15, 2018 Is the loudness feature off? Speakers too close to the wall? Room loading issue? I have yet to hear a vintage original receiver produce more bass than it should unless the bass is turned up or the loudness is engaged. The K-Horns sounding ok is the kicker here.... Make sure the loudness is off and turn the tone controls off as well. Quote Link to comment Share on other sites More sharing options...
WMcD Posted March 15, 2018 Share Posted March 15, 2018 I see there is Dolby for FM. Is that in the mix of possible causes? WMcD 1 Quote Link to comment Share on other sites More sharing options...
Forte Too Posted March 19, 2018 Author Share Posted March 19, 2018 Ugh....OK the loudness button was on. That fixed to bass issue. Thanks for all the help. BUT I lost the right side on both speaker 1 & 2. WTH?? I kept playing with the loudness button. Pressing it in and out again and again. The right side came back but then lost it again. The volume pot needs to be cleaned, there is a lot of cracking when you adjust the volume. I left the unit off for an hour. When I turned it back on, the right side was back. Any ideas? Quote Link to comment Share on other sites More sharing options...
Tarheel TJ Posted March 19, 2018 Share Posted March 19, 2018 It probably just needs a rebuild. These units are 40+ years old now. I have a 2230 with similar issues (crackly volume pot, channels in and out, etc.). Check here for parts: https://irebuildmarantz.com/catalog/index.php Quote Link to comment Share on other sites More sharing options...
paul79 Posted March 20, 2018 Share Posted March 20, 2018 I wouldn't cut your teeth on a 2330B! Not a good plan. It is a combination of issues, I am quite sure. The main in jacks on the back get dirty. The speaker relays get dirty (power cycle brings it back, or crank it up to get it on are the symptoms associated with a dirty relay typically). The controls get dirty. Quote Link to comment Share on other sites More sharing options...
babadono Posted March 21, 2018 Share Posted March 21, 2018 Deoxit BABY! But as paul79 says it probably needs TLC. Most 40 year olds do Quote Link to comment Share on other sites More sharing options...
absolve2525 Posted April 5, 2018 Share Posted April 5, 2018 Yes! Deoxit! 2330B is one of my absolute favorites. Definitely give that shot. There are a lot of switches and buttons that need to be cleaned over time. 1 Quote Link to comment Share on other sites More sharing options...
Rxonmymind Posted May 5, 2018 Share Posted May 5, 2018 On 4/4/2018 at 5:05 PM, absolve2525 said: Yes! Deoxit! 2330B is one of my absolute favorites. Definitely give that shot. There are a lot of switches and buttons that need to be cleaned over time. Even then that only proved to be a temporary solution. My Sony & Realistic had the same symptoms as the OP described and got to a point no amount of deoxit would prevent one channel from cutting out immediately. That's a hardware issue. Got the Sony back from a full restoration and it's singing beautifully. Not one hiccup. Yaay. Quote Link to comment Share on other sites More sharing options...
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