That goes to show how effective a bass trap is. Mind to show the bass trap. IIRC, it's a DIY, right?

Back to trim level, the AS-EQ1 calculated the distance and trim level, which I need to set it to my 4310. Trim is at -4dB.

During the Audyssey calibration, when the test tone is sent to your sub is it very loud? Normally the only reason why Audyssey would set the trim so much to -15 dB is if it thinks the test tone is too loud and it needs to compensate.

I didn't have any trouble with Audyssey with my previous Velo CHT-12Q. I recall Audyssey set the sub trim to -2 dB (and sub volume itself was at 30).

yes i recall that it was quite loud... But at that time i had no room accoustics, nothing... This could be the culprit..

the only way my audyssey trims my CHT12Q to +/- 2dB is if I set the gain at CHT-12Q to 10 only

I guess different AVR implements it slightly differently when it comes to levels. Either that or there is a lot of gain variance in the Velo subs

Bro, imagine what Audyssey will do to your submersive?? lol

Looking at your graph again, I think the limit of the EQ1's boost is around +10 dB, which is quite good. Some other devices might be limited to +6 dB or less.

Also, can you check with SVS if the EQ1 equalizes below 20 Hz? I notice the portion below 20 Hz looks about the same as the 'before'. Previously I did ask on AVS if MultEQ XT equalizes below 20 Hz but didn't get any definite answer.

i dunno.. i have no idea how 2 setup also & bro anfieldude is not in town to help me

guess i'll set the gain on sub to 33% and run Audyssey and live with the result until bro anfieldude gets back

Wow bro, hope you wont blow ur upstairs roof off lol since ur not able to tame this baby until anfieldude comes back

I suspect it could be the ugly room nodes since my room dimension s**ks (10' x 20'). But, I will also ask Ed abt the questions that you raised to double confirm

may i know u using wat equipment to measure that FR graph?
how much for that thing?

my Denon always give diff setting in dB for sub and speakers when re-run Audyssey. tried 3 times, all diff setting. its kinda hard to set mic at 6 constant position relative to listening area. i guess tis should be the reason behind..

Having different trim settings for speakers is quite common, nothing to worry about. It is not necessary to match the trim setting for your sub and speakers.

Your front speakers are likely different from your center and surround (maybe different brand, different impedance, different sensitivity). For your sub, a lot will depend on how loud you set the gain control on your sub.

from the graph 0 db reference level, flat curve... how many db SPL is that in real world loudness? got difference between 80db cheapo yammy sub and 110db like those JL and elite subs..

I think that depends on the loudness of the test tone sent by the EQ1. If I'm not mistaken the test tone is probably 75 - 85 dB.

That's why on many graphs you sometimes see a statement like "does not denote maximum output".

what we should know is how flat at how loud? Not just how flat at 80db. That seperates the pretenders fm the real deal.

The tone is set at 75dB

Here is my plot on Velo 12Q (AutoEQ done) with SR6003 (Audyssey done).

Using cheapo RS digital SPL with REW program. Level = 75dBC

Anyone know how to fine tune sub using SR6003 (i.e. EQ)?



Any sifu done FR on the main speakers? Too bad my RS SPL not accurate for high freq.

This post has been edited by gocitygo: Sep 29 2009, 08:27 PM

your chart looks quite good, the Auto EQ doing its job well.

my previous velo 10R also had sound levels falling off rapidly around 25-30Hz but the SVS can maintain sound levels well below 20Hz

Yes, I agree that it is more useful info to know what is the max loudness where a sub will maintain a flat graph. However, testing at 75-80dB is the industry standard.

Some time ago a new standard called CEA-2010 was introduced to test subs. You can read about it here: http://www.paragonhometheaters.com/news_info/tab4.htm This measures max clean output (as opposed to max flat output you mentioned). Unfortunately sub makers haven't adopted CEA-2010 when reporting performance specs.

wahlau! svs poision. the tot-kong is different category la.

me still new in HT. man-man lei, enjoy my investment.

one thing i learnt, better moderate or expensive gears, need to find way to optimize and unleash the full potential before jump into next upgrade. at least for me with hard earned $

i believe you are master in REW, me still blur blur and may get the master input