* Offical Velodyne Support Thread * - Page 280

What is the proper way to utilize Auto EQ, Using a laptop. At what volume should the receiver be set at? Also the sub x-over in the receiver should be set to what, since I don't have a bypass? Also do I do it as a setup mode or preset. If I used a setup mode, how do I choose it in the setup menu? Any advice would be greatly appreciated.

Joe

I forgot to mention it is a DD12+....

Hi Rob, Thanks for the response. I did pick one up and I love it. I have a quick question if you can help me. What should I set the Line Level knob at on the back(I'm using the LFE input). What is it for. Also I'm using a 12volt trigger and I have the display set to on. Does the display remain on even when the sub is triggered off? Mine stays on, so I'm not sure if the sub is off.

Thanks in advance
Joe

I watched the Incredible Hulk on blu-ray yesterday and I thought the house was going to lift off. Way to much for me. I have it set at 80hz. My current setup is below: I called Velodyne and was told to try the direct setting. I never had a sub before till a few weeks ago and this is my 2nd blu-ray watched with the sub. It seems to be too much and shakes the house. I had to turn the sub off during the Hulk. Like I mentioned before I never had a sub and a friend of mine had a new 1500R and I got it for $350 so I had to take it

(2) rear WH 2 series Wharfedales
(1) WH 2 center
(2) Sound Dynamics RTS-P100 powered speakers (towers)
Marantz SR4200 AV receiver

Velodyne Owners ...

I did a search on this board for info on the Velodyne Impact-12 sub, but really there is nothing. Also a title search on Velodyne Impact-10 and got nothing.

Just asking ... what are your thoughts on either one of these subs for use in a home 2-channel audio only system.
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I posted this in another thread I started. So far, I have 125 views, but no replies at all. Here is the thread:

http://www.avsforum.com/avs-vb/showthread.php?t=1405393
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Here is what I'm asking in that thread:

I am in the process of putting together a 2-channel audio system that will just be used for music at moderate listening levels. It will be in a living room which is about 16' x 20' with 10' ceilings.

I plan on using a set of Polk RTi A5 floorstanders for the fronts and a set of Polk RTi A3 bookshelf speakers on 30" stands for the rears.

I don't want the system thumping too loud .. just a little extra bass to round out the music.

Thinking about a single Velodyne Impact-12 powered sub. It's a 12" with a 165 W (max continuos) power rating. Not anything real powerful, but I am thinking the little extra lows will add nicely to the overall sound if not pushed real hard.

Any of you folks have any negative or positive thoughts on the Velodyne subs?

Thank's for an honest opinion,
Ron

purplerain
Sounds like it needs to be dialed in correctly.

How do I go about doing so? Thanks

My Marantz crossover frequency is 100 and it can't be changed I believe, should I put the low-pass dial on the sub to 100 or just leave the low-pass on direct? Thanks

Hi Rob, I'm so sorry for all the questions, but I'm trying to get this dialed in and Tech supports is closed. Does the LFE in on the DD+ automatically bypass the internal crossover and if not how do I deactivate it to use the one in my pre. Also what is the purpose of the line level dial on the back, I know it boosts the gain but isn't that for the volume control. Where should it be set, I'm currently at 12 o'clock. Lastly, when I run auto EQ how should I set my pre. If I leave it as it's set up the test tones stop coming out of the sub @ 80hz and begin coming out of my speakers (All set to small and the sub x-over @ 80). Is this the write way or should I boost the sub x-over to 200hz so the full signal goes to the sub during auto setup. I'm so confused. LOL....They manual is very vague


Joe

Just picked up a DD18+. I still have my trusty DD18 so the comparisons are gonna be fun! Both have incredible build quality for sure. I thought the original DD18 was big, but man the 18+ is a monster!! I havent been following this thread too much, anyone else have input on the 18+? Thanks!

Please post your comparison results once you are done. I would be interested in hearing them. Congrats on the DD-18+.

Enjoy and Have Fun!!!

Maybe manual would help? "If NOT using dual inputs, then set both level controls on the back panel to MAX."

Please, I need some advice on using auto setup. Do I leave my Pre-Amp settings, so that the test tone CD stops coming from the Velo @ 80hz and begins coming from my speakers or do I temporarily set my Pre-Pro Sub X-Over to 200hz and run the full tone through the Sub? Also what is the significance of the Line Level Control on the rear? (IE: Where should it be set). I would really appreciate any help.

Thanks in advance
Joe

Joe,

Leave your pre-amp settings as they are to use the auto-eq setup on the sub. The sub will determine the LF cutoff of the rest of your system and then adjust itself to fit "under" this.

If you are driving the subwoofer at high level (from main L&R speakers) and low level via RCA from an AV receiver sub out, the separate level controls on the new DD+ subs allow you to adjust the relative sensitivity to each of these sources so that you can balance their relative levels. If you're not driving the sub this way, you may not need to use them.

Look on the the line level control as a way of reducing the sensitivity of the sub by around 6dB at its minimum setting rather than a way of increasing the gain at its maximum.

Whether you need to use the line level control depends a bit on where you have the subwoofer volume set to match your other channel levels. If you want to use the maximum output capability of the sub, it is important not to set the subwoofer volume less than about 15. Otherwise, you will clip the subwoofer input before achieving maximum output. (You might want to search for my recent posts on the AV:Talk forum, Velodyne section to see why I say this). If you are one of those whose subwoofer volume tends to be less than 15, then you can turn the line level control on the subwoofer all the way to the left to reduce the subwoofer sensitivity allowing you to increase the sub volume a bit more. If you are lucky and your subwoofer volume is already over 15, then it matters less how you have the line level set. Hope this helps.

Thank you so much for that, I really appreciate all the info. Can I ask you, if I'm using the subs LFE input, does it automatically bypass the x-over or is there a setting to for that, as I'm using the x-over in my pre.

Thanks Again
Joe

Didn't you receive a manual for your sub when you bought it?? - I have the older DD12, and I couldn't have managed to install/ setup/eq my sub without a manual. Also, you need to read/understand the manual for your receiver/pre pro, to get the right "blend/mix" ,( x-over and LFE )
I wish I could help, but your dd+ is significant different from mine....

Yes I did receive the manual, but it is very vague. It does not say whether not the lfe input bypasses the x-over. At least nowhere that I see.

The simple answer is no. If you use the LFE input, it doesn't automatically bypass the x-over.

If you want to bypass the x-over... with the PC software, press the up arrow on the "Low Pass Crossover" field until it goes past 199 and changes to "--". This effectively disables the x-over in the sub. If you use the remote control, go into menu page 2 and put the cursor on the Low Pass Crossover field and either increase the setting past 199 to "OFF" or use the Reset key to set it to "OFF".

The Auto-EQ mode will probably override this though.

Thanks a lot. So I'll run the auto EQ and then make the change to the X-over, is that right.

Thanks
Joe

I know you received some help over the weekend from some of the knowledgeable forum members, sorry I do not monitor the forums on my days off, though I will add my 2 cents worth.

Setting the receiver volume correctly is extremely important, having the volume on the main speaker too loud can cause issues when trying to calibrate the subwoofer, especially if you have full range main speakers. With your sweep tones playing through the system and your room response on screen, mute the subwoofer. Now you will only see the response curve of your main speakers, adjust the volume on your receiver so that the volume in in the 70-76dB range. Now you can unmute your subwoofer and proceed.

When it comes to setting the cross over in your reciever, I recommend setting it between 80-120Hz. I know some like to go lower, or that the THX standard is 80Hz, but after reading many articles and doing some experimentation myself have found 100Hz works great for me (and yes I have full range speakers that go down to 30 Hz on their own). Setting the cross over at 100 Hz with a standard 12dB/octave slope means your still going to get significant bass from your mains above 50Hz. It really comes down to personal taste and experimentation. Experimentation will always yield what sounds best to you.

By default the subwoofer is going to go through the calibration in the setup mode. The setup mode is a global setting from which all the presets are then based off of. If you enter the preset mode, you will only be calibrating that one preset. This can be desirable if the single contour frequency is not sufficient for your customization.

The line level knob on the back of the Velodyne DDplus series subwoofers allow you to adjust signal strength coming into the subwoofer. In a typical single system set up this knob should be set to maximum to allow the full signal in. Where this knob would be most likely used is when one subwoofer is connected to two different systems. In this scenario the input from one of the systems could be "hotter", reducing that input would allow the subwoofer volume to remain constant regardless of which system is being used.

If you have selected the 12 volt trigger in the menu to on, and have the subwoofer connected to a source correctly, the subwoofer should shut off its LED display when you power down the 12 volt source. The video output will always be active.

Some Blu-Ray disc definately have a hot bass track, and the SPL-1500R will move a bit of air. We should probably discuss some of your other settings like your LFE gain and volume settings. You should be able to adjust these in such a way to blend the system better. Additionally you can try utilizing the night mode, selected from the subwoofer's remote, which will adjust the subwoofer's dynamic range.

The impact series is a nice entry level system designed primarily for home theater applications, but still does fine for music. Most individuals looking for a subwoofer two channel application will look to the Mini-Vee series subwoofer. While a bit more expensive, the Mini-Vee is a sealed design rather than a bass reflex (ported) which provides a much tighter, crisper, bass response. Now with all things it depends on how you will use your system and your personal taste. I have spoken to some folks that have used the Impact series and EQ Max series for music only systems and swear by them.

Turning the subwooofer's low pass cross over setting past 199 to "--" defeats the subwoofer's internal cross over.

My LFE setting is 0 on my Marantz and my volume on the Velodyne is 60....will try night mode too
My Marantz's crossover freq is 100 (can't change it), so I left the 1500R on low-pass Direct. I will play another blu-ray 2mro and see. Thanks

Hello,

I have a DD-18 (not +). What could be the reason why my sub won't sound the sweep signal when running manual EQ but does sound the sweep if running an Auto EQ?
Note that when running the manual EQ the sweep signal is sent correctly to my receiver through the analog stereo out of the sub.

Thanks

When this occurs the most common issues are either the wrong outputs are being used or the receiver is not connected or configured correctly.

There are three outputs on the back to the DD subwoofer, only the output labeled "EQ Out" will output the sweep tone. This output should be connected to an unused input on the receiver. Then you must select that input on the receiver as the source. Some receivers allow you to configure the input for analog or digital connections, be sure yours knows to look at the analog inputs.

If you continue to have issues you can try this test. Connect, or jumper, the EQ output of the DD directly to the DD's own input. Now try running the sweep tone. If the tone plays, then you know the sub is fine and the problem is in your receiver's connections or configuration.

Okay, so I have a Velodyne ULD18 which no longer works right. the woofer works fine, and the amp turns on, powers the servo, the transformer works on all rails, power LED comes on, fuses are fine... but won't play anything.


I spent like two hours looking at the citcuits and found that leg of that Op Amp looking thing missing, painstakingly soldered a new leg on, ended up probably burning the chip to a crisp in the process. is this why my beloved sub won't play?

Where can I get a brand new version of this part?

Unfortunately we no longer stock replacement parts for the ULD series subwoofers. The vast majority of the electronic parts can be replaced with equivalents available at local parts houses or through online parts catalogs. We can provide you with an electronic copy of the service manual for this subwoofer, free of charge, if you contact our service department.

Thanks a bunch. A service manual would be amazing, even if I don't understand half of it yet, this sub sounds amazing

You're a man who takes "till death do us part" seriously. Even with a subwoofer.