Out with the old...
- Thread starter CMonster
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CMonster
Well-Known Member
Houston, we may have a problem. I noticed that one of the PL100 tweeters appears to have a slight defect. Here's the good tweeter:
And the other:
It's hard to tell from the pictures, and even in person it's not all that noticeable, but it's enough to bug me. Wanting to know if it was affecting the sound, I broke out True RTA and ran four quick sweeps on each speaker and averaged them. Here are the two averages plotted together:
They're almost exactly the same so that makes me feel a little better. Hopefully you can go to my Webshot album to see the full-size photo. The store where I purchased these ordered an identical pair for their showroom so I'll probably ask my salesperson about the possibility of swapping...
And the other:
It's hard to tell from the pictures, and even in person it's not all that noticeable, but it's enough to bug me. Wanting to know if it was affecting the sound, I broke out True RTA and ran four quick sweeps on each speaker and averaged them. Here are the two averages plotted together:
They're almost exactly the same so that makes me feel a little better. Hopefully you can go to my Webshot album to see the full-size photo. The store where I purchased these ordered an identical pair for their showroom so I'll probably ask my salesperson about the possibility of swapping...
I dunno, in the range where the ribbons are likely to be most active - >5k (dunno where the xover is) - there's some substantial difference. Did you measure the speakers in the exact same location, or set up where they are left/right? That's also a very comb-filter-looking graph, did you measure each speaker individually (without the other one being on at all)?
Anyway, for new speakers of this price magnitude, I'd expect them to be pretty bloody perfect...
Anyway, for new speakers of this price magnitude, I'd expect them to be pretty bloody perfect...
CMonster
Well-Known Member
PaulyT said:
The x-over is 2800 Hz. Here are the smoothed (1/6 octave) averages plotted together:
Each speaker was measured individually in the same location but I doubt I got them in the 'exact' same spot but they were pretty darn close. Mic was about 1 meter away, pointed up, and centered between the tweeter and woofer.
CMonster
Well-Known Member
Crap, looks like I should've aimed the mic directly at the speaker: http://forums.soundandvisionmag.com...F-New-DIY-Speakers-Thread&p=300661#post300661
:text-+1:jamhead said:
I know it's a pain in the ass Chuck but look at it this way. YOU may feel better after running the sweeps that there's no harm but when it comes time to get rid of them, you're going to have a tough time convincing someone else of it and that's going to make for a HUGE loss. I'd strongly recommend you consider having it exchanged.
Razz
Well-Known Member
me too...
such a hassle to return but I know that little dent will ALWAYS be on your mind.
just return it and give yourself piece of mind.
When i bought my Dynaudio 220's the tweeter was bent, I call to return them and they asked me to pull it out with duck tape..... that was a mistake as it pulled off a touch of the coating on the tweeter. They tried to assure me that there would be no audio difference but I just couldn't live with the fact that it wasn't "perfect" (even though I could not hear a difference).
I paid a lot of money for great speakers and there was no way I could swallow it. I removed the tweeter and packaged it up....
Sent it back, no complaints, finally found happiness...... :music-rockout:
such a hassle to return but I know that little dent will ALWAYS be on your mind.
just return it and give yourself piece of mind.
When i bought my Dynaudio 220's the tweeter was bent, I call to return them and they asked me to pull it out with duck tape..... that was a mistake as it pulled off a touch of the coating on the tweeter. They tried to assure me that there would be no audio difference but I just couldn't live with the fact that it wasn't "perfect" (even though I could not hear a difference).
I paid a lot of money for great speakers and there was no way I could swallow it. I removed the tweeter and packaged it up....
Sent it back, no complaints, finally found happiness...... :music-rockout:
mazersteven
Well-Known Member
Very nice both the speakers, and the room. :handgestures-thumbup:
CMonster
Well-Known Member
I sent an email this morning describing the problem and included a link to the photos. My wife was going to be stopping by the store later this week anyway to pick up the Anthem so it won't be a big deal to have her drop off the current speakers. Hopefully they'll just be able to swap out my pair with the pair they just ordered to use as demos...
yromj
Well-Known Member
Holy crap!!! Those speakers are beautiful. I can't wait to see and hear those in my room. (Those of you asking for demos might want to consider that.)
I would swap the tweeter and Flint brought up a point I hadn't considered but is very valid.
I also think you chose well on the pre/pro. That is my dream unit.
Having said all of that, the only left to do is bow and say, "You SUCK!!"
John
I would swap the tweeter and Flint brought up a point I hadn't considered but is very valid.
I also think you chose well on the pre/pro. That is my dream unit.
Having said all of that, the only left to do is bow and say, "You SUCK!!"
John
CMonster
Well-Known Member
MAs and Anthem AVM 50v:
My wife sewed a slipcover for the rosewood SVS PB12-Plus/2 so it now matches the rest of the room much better:
Close-up of an MA Platinum PL100 and you can get a glimpse of my DIY speaker cables (14 gauge in-wall speaker cable wrapped with TechFlex and finished with cable pants):
My wife sewed a slipcover for the rosewood SVS PB12-Plus/2 so it now matches the rest of the room much better:
Close-up of an MA Platinum PL100 and you can get a glimpse of my DIY speaker cables (14 gauge in-wall speaker cable wrapped with TechFlex and finished with cable pants):
CMonster
Well-Known Member
Overall this upgrade has not been going that well. One of the MA tweeters appeared to have a manufacturing defect and had to be replaced. The Anthem was sporadically dropping audio so I just sent it back for service after trading emails with tech support for a week. I also bought a 12V trigger cable from Radio Shack which proved to be bad (I was originally worried that it was a problem with a new APC HT15 power conditioner) but an ohmmeter showed that it was a cable issue. The ohmmeter also found two more bad cables at Rat Shack before I finally found a good one.
Wanting an audition space for the old equipment as I try to sell it, I set up a two channel listening room in the bedroom I use for an office. It was originally intended just for the Dynaudio Focus speakers and the Outlaw 990, but with the Anthem out for repair and a need to test the new MA tweeter, I've been enjoying this setup:
Wanting an audition space for the old equipment as I try to sell it, I set up a two channel listening room in the bedroom I use for an office. It was originally intended just for the Dynaudio Focus speakers and the Outlaw 990, but with the Anthem out for repair and a need to test the new MA tweeter, I've been enjoying this setup: