Antimode 8033 - Page 14

where to buy antimode s2

Here's where I purchased my version at.

Here are the diagrams for before and after Antimode on my dual Rythmik FV15HP...really love it.



Although most review says it takes about 10 minutes...well, for me, it took a long time. 1 frequency sweep takes about 150 seconds...which is just damn long but very accurate for correction. The whole process takes 8 sweeps...about 15 to 20 minutes. The whole process is easier but longer than Audyssey. Just start the calibration and off I go for a quick nap/rest.

If this sort of correction system is implemented on all speaker channels, 20hz-20khz, the frequency sweep will be super duper long...but hey, super accurate too.

Agreed, running Anti-Mode takes a lot longer then some have said one should expect. The household (wife and son) was not pleased with the noise, or time it took for the calibration run.

Overall, I found the Anti-Mode, by knocking off the modes (peaks), at main listening position, knocked about 3dB off the overall subwoofer sound meter reading when AVR provided pink noise was played through the subwoofer channel.

I corrected for this reduction by going into the AVR main menu and jacked up the Audyssey guided AVR subwoofer gain setting by a corresponding three dB. In your graphs above, did you do this or is this a representation of the Anti-Mode and Audyssy EQ reading, no user adjustments included?

(I've yet to hook up the REW room analyzer to read the room. FWIW, after getting the gear ordered, downloaded and familiarized myself with REW, learned about and calibrated the microphone system, my brain demanded I take a break.)

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Edited by BeeMan458 - 12/14/12 at 7:21am

Ther first Anti Mode took about 7 minutes and the S2 takes longer due to having more filters. The Anti Mode Dual Core 2.0 even takes longer to calibrate which I use with 4 Submersives (one in each corner). The tone from the Dual Core is even louder and will drive you from the room.

Ya gotta love how everything vibrates (resonance) as the Anti-Mode goes through the frequency sweeps.

Okay, first, the subwoofer itself starts jumping, then the pane of glass in the curio cabinet, now the fireplace grill, now the glass sides in the second curio cabinet, now the whole room gets into the jumping for joy, joy act aaaaaaand then things settle down. Click. And then a new iteration begins and then the subwoofer starts flapping around and then the glass pane of the first curio cabinet starts vibrating (are the glass shelves going break) and then the.......

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

When the Anti-Mode does a sweep it reminds me of Sly and the Family Stones: "Dance to the Music."

Get that room jumping.

when calibrating the antimode is the avr on with the whole system or just the sub

The AVR doesn't need to be on. First turn the AVR on and use a sound meter to independently balance the subs at main listening position, using the subs gain control. Turn AVR off.

Before running Anti-Mode, individually balance subs at main listening position with a sound meter, measured @ a measured 1m, gain control set to 64dB using AVR provided pink noise. With both subs running, the output should measure the conjoined boost at the main listening position, ~69dB. Some even recommend measuring at one foot to eliminate interference by room acoustics. Don't know what the dB setting should be at one foot.

Run Anti-Mode.

Re-run Audyssey with Anti-Mode turned on and included in the subwoofer chain.

After running Audyssey again, set, via the AVR main menu, the speaker gain setting, at main listening position, using a sound meter with a final main listening position dB setting of, in my case, 70dB.

(Flavor to taste if you will)

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Edited by BeeMan458 - 12/14/12 at 12:08pm

Am I correct that Creative Sound offers a 45 day return policy on the Antimode devices if I am not satisfied with the results in my system?

If asking me, I don't know. I saw, I bought, I installed, I like. That's about all I can say on the matter of 45 day return policies. Give em a call: 604-504-3954.

A word to the wise, when playing music as low levels, I didn't notice much of a difference. When I noted the difference was when I put in an action movie and cranked the volume up to -10 or better where the subs come alive. In my opinion, clean, clear, concise bass. And yes, when the difference was measured, due to EQ'q the modes, there was a measurable 3dB drop in volume. I mention this so you experience is clearly defined as to your now preconceived expectations.

I'm asking anyone that might know. I am interested, but, not totally convinced it is the best solution for my needs. A return policy would sure help get me off the fence and try it.

What question has you on the fence?

It's more a question of the best route to take my system from its present state.

It's almost time to retire my 15 year old Lexicon DC-1. I have a couple options: stay with Lexicon (and use an anti-mode device) or move to a pre/pro that includes Audyssey XT32 and have it all in one box.

I really have become accustomed to the Lexicon sound and fear, even though it is aged, that I will not be as happy with the surround processing of any other manufacturer that supports Audyssey. The Denon AVP sounds like something I would like to try, but, it is at a price that is out of my budget.

I am leaning towards a used Lexicon MC-8 + an automatic Bass EQ device like the Anti-Mode. I don't have the interest or time to purchase and learn how to use measurement equipment and manually EQ my bass.

BTW; Thanks to all who have supported this thread. It has provided me with a lot of reading material and useful information to help me with my decision.

If the money is there, I wouldn't hesitate to retire your current, fifteen year old AVR, today. As to your love of sound, it's all what you're use to. If I might, an anecdotal story.

Question, do you like cranberry sauce?

Thanksgiving day, several decades ago, my bother brought a college chum home for Thanksgiving who was native to and grew up in Indonesia. The guy quite literally gagged on everybody's favorite, cranberry sauce. Guess he didn't like the cranberry sauce. Cranberry sauce not agreeing with his cultural taste buds doesn't make cranberry sauce bad. It just means he has a ways to go before acclimating to America's taste in cranberry sauce. Same thing with the sound quality of your Lexicon DC-1.

If reproduction gear is spec'd flat, it's all the same. But if the engineers "colored" the sound, then it's not flat and the sound lacks neutrality. The point, a note, is a note, is a note, unless it's been colored. May someone correct me on this if wrong, as capacitors age, so goes the quality of sound as the sound shifts to the new standard the aged capacitors add to the information stream.

You can find what products have XT32 on this page.

Regarding XT32, without question, that would be the way to go; all-in-one. When I purchased our Marantz, SR5007, like you I was upgrading and having been out of the loop, didn't have a clue about Audyssey or room analyzing programs as back in the day, it was all done by ear or one hired some pricy dude with even pricier gear to balance the room's acoustics for you. Now, we have way cool processors to do it for us.

As to which road to take, I can't say. If the money is there, go with a new AVR with XT32 installed. If the money isn't there, go with an Anti-Mode, 8033S II.

Hope the above ramblings lend some clarity to your quest.

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Edited by BeeMan458 - 12/15/12 at 9:39am

not sure if this is the place to put this but..

i ordered a 8033 but the guy shipped me a dual core instead. what is this and would it be better than the 8033 i ordered?

That dual core is a piece of crap. I'd be glad to take it off your hands.

haha lemme rephrase the question... is it 3x the improvement over the 8033? (since its about 3 times the price)

btw i'm running an svs pb12+/2 and a pc13 ultra

Were you charged the price of a dual core? If so that's messed up. If you paid for an 8033 and were shipped a dual core...well...

If you pay the price of an Antimode 8033 but got yourself a Dual Core...well, you're one of the luckiest man on Earth.

I ordered an 8033S II and all I got was an 8033S II.

If one sincerely wishes to know the answer to the above question, they'd simply go to the DSPeaker website and look to better understand what they received in error or they'd notify the company they ordered from and complain that they got a product they didn't order and they want to find out if the product they did receive is better then what they originally ordered.

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Edited by BeeMan458 - 12/15/12 at 5:58pm

dbl post.

Hi guys. I got a question here.
Quote from the Antimode manual:
What's the meaning of that? Does the antimode set the volume to the correct reference level?

I believe it is saying that after calibration by the 8033, the tamed peaks--that which the Antimode is best at fixing--will result in a subwoofer signal that is not quite as loud as it was before calibration (that's how I interpreted it when I first used my 8033). This can be remedied by adjusting the subwoofer volume control on the AVR/AVP (or, presumably, on the sub itself, though that is probably less precise).

No it doesn't. Anti-Mode EQ's the sub but doesn't do anything to set things according to THX reference level.

First things first, how ever one chooses to, calibrate the subwoofers at main listening position. I calibrate to 70dB, both subs on, at main listening position. After running Anti-Mode, without any additional changes, run Audyssey. When Audyssey is finished, use a sound meter to set the final subwoofer level at main listening position to personal tastes.

Before running Anti-Mode, I set the subwoofers, at main listening position, to 70dB. Run Anti-Mode, run Audyssey and then, using the AVR subwoofer channel internal gain control, set the subwoofer channel to 73dB. There are two final subwoofer levels oft mentioned, 70dB and 75dB so I choose to set the final in between at 73dB.

Before Anti-Mode, our personal listening level is in the -35 to -25 range. After Anti-Mode is run, as suggested in your above, our listening level volume, drops to -50 to -45. The sound quality is cleaner as the room modes are now out of the way of the music. Dialogue is much easier to hear and understand at much lower volume levels.

Don't forget to set speaker parameters to small, speaker crossovers to 60Hz (ours are set to 60Hz) or 80Hz and LFE to subwoofer so all information is bass managed to the subs..

Hope the above experience is helpful.

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Edited by BeeMan458 - 1/23/13 at 5:40am

Thanks for the feedback.
This is what I did:
Reduce the sub volume (reduce A LOT due to the LOUD test tone), run Antimode, run Audyssey...That's all.
The weird thing is that during the Audyssey subwoofer poop-poop-poop test tone, I guess the sub volume is too low that Audyssey re-start the subwoofer test tone again (yes, the poop test tones go for a second round) with louder volume. End up with +3.5dB on the LFE trim. I hope that it's normal.

I've run Audyssey many times; practice, practice, practice.....and then practice some more. Yesterday, when running Audyssey as you described in your above, for the first time I experienced what you described during the "poop-poop-poop test tone" phase. Indeed, the subwoofer volume was raised a bit but when I checked the internal AVR levels, they were set to +/- 0dB. Before I had replaced the subwoofer drivers, levels were regularly set to -12dB. So my "guess," what ever your final internal AVR subwoofer gain level setting is (in this case +3.5dB), totally normal. But I find a need to make a final sound meter adjustment, at main listening position. In our case, the AVR set subwoofer gain, after Audyssey was run, was +/-0dB and with sound meter in hand, I raised the internal AVR subwoofer gain to +6dB for a final listening test tone measurement of 73dB.

(Radio Shack, digital sound meter set to "C" weight and "Slow." I personally average the variations in reading as they float up, down and around a few dB.)

Is the RS SPL meter accurate to check LFE trim level?
As far as I know, RS SPL meter is not accurate in the low bass region.

Here's a scenario:
Meter reads 75dB for L,C,R,SL,SR.
Meter reads 75dB for LFE.

Is the LFE level really about 75dB? According to here, the meter under-reads. If we take the meter reading of 75dB, in reality, it could be 80dB or more.

There's charts that give correction data.

Personally, I have plans of buying a more expensive sound meter with calibration tool for without a calibration tool, one never knows the truth about anything......and then again, who calibrates the calibration tool?

How do we know which correction value to apply for when the AVR is playing the LFE test tone? Could the AVR be playing a broad range of bass pink noise?

If you click on the AudiogoN forum link, at the top of the table, in the preamble, can be found this comment:

" Keep in mind that these corrections are only valid under the following conditions. The meter must be set to C weighting, using 1/3 octave pink noise (easily available from various CDs), with the mic pointed at the speaker."

Hopefully this comment answers your question. Personally, I'm not worried too much by a dB or three of error but I am worried sufficiently that when I have the spare change, I'd like to buy the sound meter package I linked to. Until then, I'm good with what ever shows on my sound meter screen.

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