Velodyne EQ - Page 3  

Bruce, I'll take another stab.....

Have you ever considered making the frequency sweep full range(20hz-20khz) so that we could see the full system response?

thanks,

Ran

Ran,
Velodyne would have to add more parametric equalizers if the intention is to permit correction of the entire audible range. This would be very nice though and would allow them to charge more money for the unit.

Bruce.........

Is the external SMS going to have the RS232 to tie all the units together??

Bruce,

I have an HGS-10X. What would be the difference between purchasing an SMS, or upgrading to a DD-10?

Thanks

Sorry Ran,
Yes, we have considered it, and even started coding it. THe feature didn't make it into 2.0, but we might be able to do an interim upgrade.

Bruce

Yes, there will be RS232 in and out for daisy chaining, external control with universal remotes and software updates, just like DDs have.

Bruce

IMO, I'd go with the DD-10. Let's try this list:

1. The DD will have eveything integrated, no external EQ box
2. The DD has a digital accelerometer, while the HGSX is analog. THe DD has more loop gain, less distortion.
3. The DD has a theater/music control where you can adjust the amount of servo loop gain (i.e. distortion).
4. Street price for the HGSX + SMS should about equal that of the DD.
5. The DD will play about 2 dB louder than the HGS-X.

Hope this helps,
Bruce

ScottB,

No, my intention was not that it would CORRECT the entire audible range, but merely to be able to view it...kinda like having your own bare bones RTA, which is far less ambitious, but something easily doable. How would ya like to be able to view your speaker's response with a 1 meter on-axis sweep? Or how about your entire system at the prime seating location? :)

If you're talking full frequency eq, you're talking a whole nuther, much more complex animal...and something not really in the Velodyne realm. Subwoofer frequency correction is plenty enough for me.

Bruce, you guys are doing absolutely AWESOME work and should be applauded for staying on the cutting edge as you have. I'll have to sit down and try to think of a feature the DD's DON'T have!
At this point, it seems to me that the only things that can be improved upon in future models might be the sophistication of the AUTO-eq and perhaps driver excursion capability/linearity. It's guaranteed that the DD's aren't the last models Velodyne ever makes. :)

Keep it up!

Ran

ps-and thanks for the FREE downloadable upgrades...yesssss.

Bruce,
How do you respond to the Audyssey EQ method versus the DD method of EQ?
Single point versus multi point EQ....see this thread:
http://www.avsforum.com/avs-vb/showt...91#post4942091

i.e. How would you recommend I EQ my DD18 with a Denon 5805?
TIA

Cajun,

Why would you want to EQ your DD18 using the DD EQ? The 5805 EQs the subs already. Unless I am missing something?

-Brian

I suspect that Cajunlab is merely curious to hear Bruce's take on the Audyssey MultEQ's use of FIR filters versus the peq of the DD's. The Audyssey folks obviously believe their system is better, but that remains to be heard. If their system is indeed more sophisticated, you would best avoid cascading the filters of the DD.

If you do have the Audyssey system, you have choices. If you don't, the question is moot. :)

Ran

ran,
Exactly, thank you.

Bruce,
Also, could or should the audyssey algorithm be incorporated into future AutoEQ functions of the DD series (v3.0)?

Interesting post.

I'm really interested in getting a couple of DD-12s for my HT --- especially for the built-in Velodyne EQ system. However, I'm also very interested in the MultEQ.

Question: Assuming the MultiEQ is better in correcting the sub, would I be able to turn OFF or bypass the Velo EQ? I'm sure the DDs are quality subs from an engineering perspective --- even without the EQ system.

Thanks in advance for your help!

Yes. You can bypass the EQ by selecting Preset 6 on the remote. :)

I'm also intrigued as to which system is better, the Velo's or MultEQ XT. I hope to have a Denon A1XV soon so will be able to compare them.

Even IF the Audyssey system is better, it'll be some time before it's available in a stand alone box, and then it'll probably be in the $750-1000 range when it does. I'm guessing that Velo(and AV123's RDES) will garner the lion's share of the outboard peq market for the next couple of years, and if something like the Audyssey system proves better, Velo will put THAT in a box instead. They're on the ball, no?! :)

I wrote to Audyssey some time ago. They said they will have a standalone product available soon, however, no mention of price. See response from Philip Hilmes:

Thank you for your interest in Audyssey MultEQ. We are very excited about the revolutionary acoustical correction capabilities that MultEQ offers. We are working with various manufacturers to come out with standalone systems that will have Audyssey MultEQ and would plug into your preamp. The first standalone system will be out in Q2 of 2005 with others following after that. Also, Denon has already released its 5805 receiver with Audyssey MultEQ and several other AVRs will also be coming out next year with MultEQ in them. We’ll have more information on these products and others posted on our website soon. I apologize for the current lack of information up there.

Good info...thanks!

We'll have to hear how well it really works and then get Velodyne's take on things. I know that I'M damned curious to hear it. :)

Ran

ps-and don't forget that "soon" can mean anything from next month to never in the audio biz.

Damn, I wish the Velodyne EQ had L and R inputs/outputs (instead of just the mono input/output) so I could use it in-between my 56TXi and external amp for the Front L/R speakers. I do not like the internal crossover filters of the 56TXi (I get a big dip in FR response at the crossover point, regardless of phase adjustments, sub placement, group delay, etc...), so I was going to use ACI's passive high pass filters on the input to the amp, and using a Y adapter before it to run cables from the 56TXi's preouts for the L/R channels to the input of ACI's Maestro to use it's low pass filter. Of course this means I would be setting my front L/R speakers to large and select "no sub" in the 56TXi so all the bass info (including LFE) would be routed to the L/R preouts.

Anyway, I was going to use the R-DES EQ on the input of the Maestro because it has left and right inputs/outputs. But now I find out about Velodynes EQ, which would be perfect with all it's features the the R-DES does not have, like delay adjustments, remote control etc. Oh well I might just have to bite the bullet and use the 56TXi's internal crossovers by using the sub output and setting all speakers to small as usual. Because I'm sure in the hell not going to buy two of the Velodyne EQ's so I can EQ both the L and R channels!

Always compromizes!

Best Regards,
Patrick

Any more updates as to when the unit will be available. 2nd, or 3rd quarter of 2005????

I'm sure a lot of people are waiting for this solution! :D

Hi Eric,
Right now we're looking at late summer.

Hope this helps,
Bruce

Hi Bruce!
As I understand it in v2 the difference between auto-eq & self-eq is that auto-eq sets all parameters incl. crossover, phase etc whereas self-eq only eq's the sub after other parameters are set either in the prepro or the sub. Correct me if I am not understanding it properly. I am eagerly waiting for my DD-15 for the last 2 weeks. Is the shipping on hold so as to load v2 in the new units?
Thanks.

Hi Vinod,
No, the difference between self-EQ and auto-EQ is that self-EQ emits 25 sweep tones from the woofer itself, then sets the EQs automatically and saves. The idea is that to use the auto-EQ function, you don't need to hook up anything but the microphone.

Auto-EQ is an option on the sweep screen and uses the EQ out and video signals coming out of the DD. You can watch the sliders adjust after each EQ. It runs for 25 sweeps and then reverts back to manual EQ.

Neither EQ function sets anything but the 8 EQ sliders. All are set to third-octave centers with fixed frequencies and 4.3 Q values. So, as we say, the auto-EQ is good, but will never be as good as a manual EQ setup.

Unfortunately, your new DD will not have 2.0 in it. We have quite a few in the supply chain that have not been updated. However, updating is easy and we'll have the update on the web site soon. We're just in the very final stages of beta testing.

Hope this helps,
Bruce

Going back to Audyssey EQ vs. Velo EQ. Actually, IMO, you'd want to use them both. Use the Velo to get the subwoofer as smooth as you can then use the Audyssey to correct from there as needed.

It looks like I'll get to experiment with using a processor with room correction AND the Velo EQ system very soon to see what method gets best results. My instincts say that you EQ via the Velo system first, then let the processor/receiver EQ.

Cheers,

Hi-

If I remember correctly the DD boxes keep the correct phase when they EQ. Will the external box be able to do the same thing? Also, what kind of drop in output would you expect from say, an HGSx box? (...or is the output drop from the distortion control?).

Thanks for the clarification.

hello
very curious to see this Velodyne equalizer in the flesh. it was about time a manufacturer did a consumer friendly processor to equalize subwoofers (external processor to fit many different models of subwoofers).
question: how to equalize two subwoofers located at different places in the room in the same time ? or you equalize one then equalize the other one ?
and then there is the question of equalizing the subwoofers to obtain an uniform bass level and response at all seats (which is impossible in fact or to approach it you would require several subwoofers and specially designed room. if you have several seats (i mean 8 or 12) , there WILL be always seats in a null zone for instance.

Bruce,

Is the msrp still around $499 or is it higher now with all the hype....????

Another feature, one that might not be used by many people is separate switchable inputs.

My HT/Audio system is split into 2 sharing only the main front 2channel amp and main LR speakers. It would be nice to be able to switch between a HT processor input and another say 2channel input so the processed and EQ'd sub would work for both systems.

John, What if you corrected something with the Velo that you could have corrected better and/or more precisely with the Audyssey? Each system has different capabilities, sometimes for doing the same task. Try it with the method you describe, but also try each EQ system separately. You may even want to try turning off all your amps and just listening to the subwoofer by itself. If the Velo isn't measuring in the time domain, like MRC is, then you should hear a difference in results.

Best,
Sanjay

Hi Bruce,

Can you please explain how the remote control features operate? I have a Velodyne Digital Drive subwoofer and as you know it has an IR sensor on it that picks up the remote control IR signals and adjusts volume, phase as well as the parametric equalizer settings. I assume a different approach would have to be taken to adjust non-Velodyne subwoofers without IR sensors.

Would a non-Velodyne subwoofer have it's volume set to maximum and the phase set to zero, and then the remote control would be pointed at the SMS-1 to attenuate the volume and adjust the phase, as well as the equalizer settings? Such an arrangement would make it a lot easier to adjust subwoofers, especially those built into cabinetry where the controls are not easily accessible.

Thanks.

Larry

Larry,
Exactly! The only difference is that we might suggest setting the non-Velo woofer to mid-volume level instead of full. Sometimes full volume adds a bit of distortion to the signal. However, experimentation is the key.

Hope this helps,
Bruce

Bruce,

Is the timetable for the SMS-1 still late summer as you mentioned above? Can I "pre-order" one direct from Velodyne? Or, from a dealer? Thanks.

Craig