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I give UP Aerial 10Ts and Power Amps

Ok, about 30 days ago, I ran a post stating my Citation 7.1, a 4 channel 210 x 4 (biamping my speakers) started cutting in and out at VERY loud levels, probably +100db, give or take. Everyone pointed to larger amps, that the speaker, a 4 ohms load, could take anything I threw at it.
Well, I took that word, while keeping my Citations, and threw a set of Jeff Rowland monoblock 7III's at them!
The babies, definitely high current, 350 into 8 ohms, 700 into 4 ohms, and a whopping 1100 into 2 (not that we are going to 2, but I suppose it could drop) ohms. That said, it happened again! WHAT GIVES?

It did this with the Casablanca, the Citation 5.0, and tomorrow I will be with the keeper, the Proceed PAV/PDSD combo. NOW, what is causing this? Could it be the speaker has a cut off to prevent any clipping, could it be the power in the house hits a wall and can't go anymore, could it be cables, power cords, what?

Or, dare I say, could I have just hit the limits of volume for a home and this set of speakers?

For what it is worth, I do not listen to things this loud, ever, or RARELY, but when changing pieces, I do PUSH to know the limits.

HELP!!!!!

Frustrated home theater guy trying to learn more about 2 channel!

Dan
porschecab
twl
3,251 posts
 
If you want high volume don't get an 86db inefficient speaker. They can make aircraft carriers go pretty fast, but they need a nuclear reactor to do it. I am not sure of your problem, but efficient speakers of at least 93db/1watt and high power handling, will solve your volume problem. Then you won't need to push so hard. And don't get speakers with a cut out switch. Also, you need to take a little time to learn about this hobby. System matching is one of the most frequently talked about subject on this forum. Learn what speaker efficiency is, and other technical subjects and you will have less headaches. We have all had to do this so don't feel bad. The ones that have studied are the ones that are answering the questions for the people that haven't. This is okay,but as you see, you can spend alot of money and not be happy if you aren't careful.
tswhitsel
126 posts
 
This is the second or third time you've run this post about your 10t's for which you've received all sorts of advice. You now state that you do not really listen to music that loud and only want to know the limits of your system. So now it would seem, for whatever reasons, that you have met your limit and if you don't plan to listen that loud anyway what is the problem? It was also suggested by myself and others that you contact Michael Kelly at Aerial, but it seems you have not done so. He will be able to help you more than any of us. As you've no doubt noticed from all the posts you've received, none of the rest of us 10t owners seem to be having any problems. Suggest you call Mr. Kelly first thing Monday morning.
stehno
1,453 posts
 
Sean, the amps do not have to be 'starving' to experience some to many of the affects of being starved. Simply being a little hungry is enough seriuosly hamper an amps ability to perform. And I have no idea what affects a little hunger may have at full volume, but I'm sure it's not pretty.

For example, I have a 600 wpc @ 4ohm amp on a dedicated 20 amp circuit. However, until I installed my 3rd dedicated circuit/line, my preamp shared the amp's line. The preamp only consumes something like 36 watts or so, hardly anything. When I moved the pre off the amplifier's circuit, the amp just started singing dynamics. Huge difference in the dynamic headroom.

And I 90% of the time I play my music at just over 10 percent of full volume.
justlisten's avatar
justlisten
489 posts
 
Just for the record, I was the person to who sold Dan (PorscheCab) the Rowland 7s. As he drove up to my home in his van I knew he was coming as I heard his car stereo from about 4 blocks away!! (:-)

While I have very efficent speakers (Michael Green Chameleon 3s), I agree with Stehno and had each Rowland on its own 30amp Dedicated circuit. In fact I have 5 circuits, 1 for wach amp, 1 for a preamp, 1 for analog, 1 for digital.

Dan, perhaps, you need to get an electrician in to work on your AC supply....give me an email and I put you in contact with the person who did mine.
porschecab OP
335 posts
 
Thanks to all that have responded (again) to this post.
In deed, contrary to your thoughts, I have talked with Mike Kelley, and indeed, he felt more power from a 2 channel amp would be better served than a lesser 4 channel, biamping.
Thus, he thought the Classe would be a good match, and my thought was, the Rowland would not be any worse, if not better.

In deed, I do not listen to music this loud very often, but I do like to on occasion, as I imagine everyone here does.

Also, I appreciate the 'learn about audio' comment, nice.
I think that is what I am doing, and if there was a clean answer to this question, not only would I probably have know the solution, all the responses would be identical.

That said, I am starting to feel, the circuit is the issue.
I am running BOTH amps, as well as ALL of my gear off the same 15A circuit!

Hey, great suggestions, maybe it is the circuit!!!

Thanks, and I will search that avenue. Let me ask this, would a power regenerator, like the Monster AVS-2000 help?

D
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