Antimode 8033 - Page 12

No! You can use a "Y" splitter on the "0" out to go to 2 subs. I do it all the time. Once had quad subs in a room and using 3 Y splitters to 2 groups of 2 subs and it worked just fine.

Thanks. Nice improvement. I'm wondering is Antimode boosting the lower amplitudes by 5dB or they rises up automatically due to reduction of peaks?

Does anyone know if the AM8033 corrects for differences in distance in a dual subs system where one sub is near field, about 1.5 feet away whilst the other sub is about 9 feet away?
The near field sub ( phase set at 180) is connected to the 180deg phase output and the further one ( phase set to 0 deg) is to the 0 deg phase output.

Is it essential to set the phase to 180 and 0 deg corresponding with the respective outputs on the AM8033 the subs are connected to?
A friend suggested to vary the phase of the near field sub so as to obtain the same distance as the further sub by using the AudysseyXT on my AVR.
Then to run AM8033 followed by AudysseyXT with this phase setting.
Will this method correct for the time domain difference or is it done automatically by AM8033 regardless of the phase setting?

I hope I am not confusing you guys.

Antimode 8033 treats the whole bass as mono bass. It does not know if you have single or dual subs. Antimode cannot individually time-align each subs, unlike Audyssey Sub EQ HT.

When plugging in Sub A (with 0 phase) to the 0 output, and plugging in Sub B (with 180 phase) to the 180 output, both subs are finally at the same phase, ie 0.

I run 3 Submersives off the "0" output on my 8033 with "Y" splitters. Awesome output and the room and seat shake.

I have 4 subs connected to 8033. Front 2 are 14 ft away & connected to 0 output whereas back 2 are 8ft away connected to 180 output with SMS1 in the chain before 8033 to visualize/tweak the response/EQ further. With rear subs out of phase in my room the response is much smoother without rattling/booming & seems like inverting the phase on the rear subs has time-aligned them to some extent. Response is also much smoother around the crossover region.

Vinodk,
Please may I ask how the rear subs are out of phase?
Do you mean the rear subs' phase knobs are set to 0 phase but connected to the 180 deg phase output on the AM8033?
If not how did you set them to be out of phase with the front subs?

Thats correct, I left the phase knobs on the subs at 0 & connected the subs to 180 output on 8033.

Thank you for the clarification.
I think I will try this when I have the time.
The distance mismatch in my case is rather significant and I wonder if adjusting the phase will ameliorate the time alignment issue.
The other alternative would be to use a digital delay between the rear sub and the 8033.

A L,
I think you miss what these guys are saying. You calibrated each of them separately (i.e. with the other off) and then combined them by turning them both on.

The best way to get the combined result is to first calibrate with the 8033, leave it active, and then run the Audyssey calibration with the 8033 in the chain.

Would you be willing to do this and post the graph? It would add to your already very helpful post above.

nlpearman

I have tried to make myself clear that I have done exactly as what you have suggested.
Maybe my labeling of the combined AM8033 with XT is misleading, but I did the 8033 calibration first, then left it active, and proceeded to do the XT calibration.
In to tal I did three calibration.
1. Just AM8033 self calibration.
2. Just Audyssey XT 3 position calibration
3. With AM8033 active, did a 6 position audyssey XT Calibration for the combined graph.

And re-reading the posts, you're absolutely right. My mistake.

Thank again for your informative comparison graphs. Good stuff.

It's time to get a new toy to play with and the "DSPeaker Anti-Mode 8033C" seems like the right toy to get. From research, my understanding, unless one has stereo sub pre-out capability, there's no benefit purchasing the more expensive 8033S. If there's benefit, I'm happy to get the more expensive 8033S II.

For general information purposes, we're currently running a pair of subs attached to a Marantz, SR5007 which has two separate (mono) sub pre-outs and Audyssey XT. In the near future we definitely will be upgrading the subs but do not have plans on upgrading to XT32. My question, do I get the 8033C or do I get the 8033S II? Will I be shortchanging my efforts getting the 8033C and will there be benefit getting the more expensive 8033S II?

I have the 8033C and I believe the main benefit to the S model (apart from its stereo capability) is that it will EQ to a higher frequency cutoff than the C model. However, unless you have a high xover setting (say 120hz or higher), I don't believe it makes much difference.

Thanks Ovation. Our settings are 120Hz with what ever the Audyssey crossover settings are set at. The 8033C can be had at TweekGeek. Do you or anybody else have any dealing with them as at $350.00 USD, they have the best price I've found. I just need to make sure I'm not shortchanging the purchase over a hundred dollar difference.

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Edited by BeeMan458 - 11/22/12 at 12:15pm

Just got off the phone after ordering an 8033S II.

(scroll down to comparison sheet)

Fifty percent more filters, greater frequency capability, an additional lift mode, capable of stereo in/out and upgraded firmware.

I purchased from Bob at Creative Sound Solution, delivered, for $450.00.

I just upgraded from the original to the 8033Cinema and also bought from creative sound solution. enjoy your new toy.

It's the waiting that kills ya.



Now I want an Omnimic setup so I can see what's what with what.

Dbl post. D'oh!

I read that both UPS and Fedex are going on strike today.

What ever happens, the 8033S II that was ordered will be delivered via USPS.

Curses, foiled again.

After reading through this thread I'm going to have to get one. Something to play with.

Okay, fine, I'll call them up and ask them to change the shipper.

............(Not!)...................

..............

Boys and their toys!

And the party's at your house.

.........

Enjoy. I would likely spring for the S-II if I were looking for one right now (the extra filters are the biggest selling point for me) but I'm quite happy with my current model. If I ever add a sub to the living room system, I'll likely move my current 8033 up there too and get the S-II for the HT (or whatever they have at the time).

I might be interested in selling my 8033S and upgrading. Anyone know the best place to sell one? They seem to be few and far between on eBay.

I'd be happy to do a short review but I haven't picked up an OmniMic yet and other than Audyssey, MultEQ XT, which I'll layer on top of the Anti-Mode, I have nothing else to compare it to.

Have you picked up a room analyzing program like OmniMic?

PM sent about your antimode.