What happened?

Hard to know for sure what's causing your problem, given that you only swapped out the speakers. However, you should check / eliminate the following possible causes of the problem:

1. check the tubes in your preamp -- one of them may need replacement;
2. check the cartridge's cantilever to see if it has gotten bent or damaged.

Hope others on the forum can offer some other suggestions.

Carl, nothing is wrong with your phonostage and cartridge. The problem you describe is unfortunately well familiar lately for many people I know. For the last 2 weeks the power lines are horrible with a huge amount of noise in it. I know some serious installation here in Boston and in NY that are practically unlistenable. I could describe how your system sounds not and you will be very surprised how exactly would be my description: it is the way in which ALL OUR SYSTEMS sound during the last 2 weeks. Your problem is that you were “stupid enough” to buy the decent speakers that can actually discriminate results. Most of the others will not get it. So this is NOT your system but what you hear are the sound of your currently faulty power lines.

Rgs,
Romy the Cat

Hmmmm, "stupid enough"? Isn't that a bit harsh? It looks like Romy did not read the posting very well here. Since the LP sound changed for the worse even though the CD sound was unchanged, the focus should be of course on the TT/Arm/Cartridge/PhonoStage in the Hovland. Since the MM input is being used, I highly doubt this is susceptible to major changes in power vs the CD sounding as good as before. Is the Hovland MM stage that poorly designed? I doubt it. Perhaps a super low output cartridge might be more vulnerable to this.

It's not easy to analyze the change to thin and bright however. Generally when something goes astray in my system, the sound is more 2-dimensional as in a loss of harmonic richness. I swap tubes between channels and with spares to try and remedy this. Or the issue is an increase in background noise. This once was due to the shield on the phono connector not being tight. A quick crimping and re-solder and all was back to normal.

With a Koetsu cartridge, I could hear the slow degradation of the sound as it reached its end of life. One night the sound was suddenly greatly reduced. But again, it was not bright but rather the opposite. All the magic of the system had collapsed like the sound of the first generation of CD players.

You do not mention if the problem is one channel or if equally poor in both. Try disconnecting and reseating the phono cable. Also a quick visual inspection of the stylus and cantilevel is in order.

A visit to your local audio shop with your TT would save a lot of guess work on where to focus your attention with this problem. It could very well be the cartridge was faulty. And why not have the dealer assess this for you?

Hope this gives you some ideas.

John

It's also possible that your speakers are still breaking in, and will likely even out in the near future.

jd

A lot of good points brought up for you Carl. How many hours are on the speakers? Break in is a roller coaster ride for the first 400+ hours. The "dirty" power could effect your phone stage more so then any other component- its certainly possible(and Carl is in Boston, or at least I believe he is). Another potential problem could be with one of your ceramic midrange drivers, on my friends midi grand's he had crack's in one of his drivers which caused the system to sound VERY inconsitent and it was more noticeable with vinyl then digital. The cracks would be VERY tiny and hard to see, look through the grill with a flash light around the edges and see if there are any hair line cracks. I am by no means a vinyl guru so I will leave that up to the others! :)

Congratulations on the new speakers!