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* Offical Velodyne Support Thread * - Page 308

post #9211 of 9547
Quote:
Originally Posted by Rob Morse View Post

Orders placed are typically processed within 48 hours. If the shop contacts me I would be happy to see what is going on.

* I ended up speaking with a Rep ~ Quang Trang ~ He stated it's a warehouse issue ~ and needs to speak to the rep in that department. Not sure what the delay can be yet, but will be getting more information come Monday.
post #9212 of 9547
It is fine to mix the subs. People say it is best to use two identical subs when using more then one, but these subs are so close in performance that it doesn't matter. Now if you were to throw in a sub that was lets say....300 watt, and 8" then it would matter. Fwiw I run a DD-15 and a DD-12 and have no problems what so ever. Both of my subs are also for sale...PM me if interested.
post #9213 of 9547
Model: CHT-12QR BVE
Serial:693351184

Electric board: E230194 HX-008 (94VO)

Hi!!

I live in Sweden Europe and have a Velodyne that I am very happy with. Unfortunetly it suddenly was dead, I disassembled it and found a burnt curcuit board. I can not tell why but maybe due to bad contact between the connector that is for the woofer. It is badly burnt there anyway.

I would like to get this unit fixed and I wonder if you can help me out to get my hands on a new circuit board.

thank´s in advance for a reply in this issue. Also sorry for my poor english!!

Best regards Jesper
post #9214 of 9547
Quote:
Originally Posted by theatredaz View Post

* I ended up speaking with a Rep ~ Quang Trang ~ He stated it's a warehouse issue ~ and needs to speak to the rep in that department. Not sure what the delay can be yet, but will be getting more information come Monday.
It turns out the problem was due to a change in our order processing system. We are transitioning from one software to another and the data did not transfer over correctly causing the order to be placed on hold. That hold has been removed and the part is shipping. We are very sorry for the inconvenience.
post #9215 of 9547
Quote:
Originally Posted by SeekingNirvana View Post

It is fine to mix the subs. People say it is best to use two identical subs when using more then one, but these subs are so close in performance that it doesn't matter. Now if you were to throw in a sub that was lets say....300 watt, and 8" then it would matter. Fwiw I run a DD-15 and a DD-12 and have no problems what so ever. Both of my subs are also for sale...PM me if interested.
I would not see a serious problem running a DD15 with a DD12 in the same room. OCD issues of having two mismatched subs are more likely to be a problem than sonic issues.
post #9216 of 9547
Quote:
Originally Posted by Jesper_75 View Post

Model: CHT-12QR BVE
Serial:693351184

Electric board: E230194 HX-008 (94VO)

Hi!!

I live in Sweden Europe and have a Velodyne that I am very happy with. Unfortunetly it suddenly was dead, I disassembled it and found a burnt curcuit board. I can not tell why but maybe due to bad contact between the connector that is for the woofer. It is badly burnt there anyway.

I would like to get this unit fixed and I wonder if you can help me out to get my hands on a new circuit board.

thank´s in advance for a reply in this issue. Also sorry for my poor english!!

Best regards Jesper

There are to options for you, first would be to go through your European Velodyne Distributor / Dealer, and the second would be to contact service@velodyne.com to order a replacement electronics pack from us. With option two you would need to purchase the entire back panel assembly, plus pay for shipping, duties and taxes.
post #9217 of 9547
Quote:
Originally Posted by Rob Morse View Post

I would not see a serious problem running a DD15 with a DD12 in the same room. OCD issues of having two mismatched subs are more likely to be a problem than sonic issues.

Since I do not suffer from OCD I should be fine then..... Thanks! 😀
post #9218 of 9547
Quote:
Originally Posted by ola67 View Post

Since I do not suffer from OCD I should be fine then..... Thanks! 😀

Then you sir are a better man than I.biggrin.gif
post #9219 of 9547
And most of us Rob!
post #9220 of 9547
Quote:
Originally Posted by Rob Morse View Post

Then you sir are a better man than I.biggrin.gif

Quote:
Originally Posted by curt c View Post

And most of us Rob!

Apparently better than the Velodyne folks anyway. wink.gif

Good to see you still read things here Curt, thanks to both you and Rob for all the answers and assistance given in this thread.
post #9221 of 9547
Thanks. I do check in often. Old habits die hard...
post #9222 of 9547
Quote:
Originally Posted by curt c View Post

Thanks. I do check in often. Old habits die hard...
Its the drug that never leaves your system, but then why would you ever want a system without bass?
post #9223 of 9547
Why indeed? Keep up the good work Rob!
post #9224 of 9547
Hi!

Im having some problems with my Onkyo NR-3007 and the DD 10 plus (just bought).

First off i was unable to connect the DD 10 plus to a computer with windows 7 after reading the manual and testing every single USB port (ten of them). So the alternative was to configure through s-video cable, everything seemed fine until i punched in the 12345 and i get too low signal.

After checking all configuration on the onkyo and im really new to the DD plus, am I missing something?

When i play music i have to really get the volume around 30-50 on the DD plus to get some noise. (that should be pretty loud?)

Thanks in advance

Best regards

Miguel

Ps. Ive tryed switching up the volume on the onkyo but still no luck.
post #9225 of 9547
Quote:
Originally Posted by ztorm View Post

Hi!

Im having some problems with my Onkyo NR-3007 and the DD 10 plus (just bought).

First off i was unable to connect the DD 10 plus to a computer with windows 7 after reading the manual and testing every single USB port (ten of them). So the alternative was to configure through s-video cable, everything seemed fine until i punched in the 12345 and i get too low signal.

After checking all configuration on the onkyo and im really new to the DD plus, am I missing something?

When i play music i have to really get the volume around 30-50 on the DD plus to get some noise. (that should be pretty loud?)

Thanks in advance

Best regards

Miguel

Ps. Ive tryed switching up the volume on the onkyo but still no luck.

I will try to tackle your issues one by one:

First with regards to connecting the subwoofer to the computer via USB, occasionally this issue occurs due to a failure of the drivers to properly auto-install. Please try uninstalling the Velodyne software and resetting your computer. Then place the disc in the tray and stop any attempt to autorun. Open the drive location and locate the readme file, then follow the manual installation instructions as outlined. Hopefully this will solve the problem.

Next, the low signal issue and your low bass output during music playback which I believe are related to a speaker settings issue. It is important to remember the difference between stereo signals and surround sound signals. Stereo has only a left and right channel, there is no LFE or bass track to send to the subwoofer, unless you tell your receiver you want the bass managed differently. The source of the sweep-tone is the supplied audio compact disc; this disc is recorded in two channel stereo. If your receiver is set to discreet or if you have set your main speakers set to large, then most likely no signal is playing from your subwoofer. Any signal you are hearing is being generated from the left and right speaker only (take the grill off the subwoofer and place your hand on the cone to confirm) this can result in the subwoofer not detecting sufficient signal. Sometimes the sub will sync to the main speakers but then be unable to detect the sub volume resulting in the volume being cranked to the maximum.

Another possibility, especially if you ran the Onkyo's room equalizer first, is that the LFE output gain has been set very low. This can be a result of running the system EQ with the subwoofer volume too high to start with ( I recommend starting at 20). After I run system EQ, I always go back into the LFE output and set it to the neutral 0dB.

Now that your settings are squared away we can calibrate the subwoofer. Once you have synchronized the sweep-tone, mute the subwoofer so the sweep-tone plays through just the main system. Now adjust the Onkyo's volume so the peaks of the sweep signal between 40-120Hz are in the 73-76dB range, then unmute the subwoofer and begin adjusting the subwoofer's equalization.
post #9226 of 9547
im in the midst of fine tuning my subwoofer (impact 12) with the rest of my system. being quite a noob, i will like some recommendations on how i should set the dial of the low pass frequency at?

My speakers that will be matched with are rated "Frequency response 60 Hz - 50 kHz" , so i was thinking i should perhaps set my subwoofer somewhere around 65hz?

But the dial for the impact12 low pass frequencyl starts at 50hz at the 7oclock, and 80hz at 12 oclock, and 200hz at the 5oclock. It doesnt make sense to me that even with equal spacing between 50hz to 80hz and 80hz to 200hz, having the same equal 4 spacing but each spacing represent a different range..

Currently its set at 11 oclock..

Anyone able to share some advice on how to proceed further, whether what tracks should i play , and look out for to further tune my subwoofers?
post #9227 of 9547
Quote:
Originally Posted by Rob Morse View Post

It turns out the problem was due to a change in our order processing system. We are transitioning from one software to another and the data did not transfer over correctly causing the order to be placed on hold. That hold has been removed and the part is shipping. We are very sorry for the inconvenience.
* The part has been confirmed shipped and I'm waiting for the shop to receive it.

* P.S. Quad sub setup @ 8" minivee's = Giant drum set. And better in room bass displacement.
post #9228 of 9547
Quote:
Originally Posted by julaha View Post

im in the midst of fine tuning my subwoofer (impact 12) with the rest of my system. being quite a noob, i will like some recommendations on how i should set the dial of the low pass frequency at?

My speakers that will be matched with are rated "Frequency response 60 Hz - 50 kHz" , so i was thinking i should perhaps set my subwoofer somewhere around 65hz?

But the dial for the impact12 low pass frequencyl starts at 50hz at the 7oclock, and 80hz at 12 oclock, and 200hz at the 5oclock. It doesnt make sense to me that even with equal spacing between 50hz to 80hz and 80hz to 200hz, having the same equal 4 spacing but each spacing represent a different range..

Currently its set at 11 oclock..

Anyone able to share some advice on how to proceed further, whether what tracks should i play , and look out for to further tune my subwoofers?

I will assume that you are connecting the impact series subwoofer to a home-theater receiver and are setting up a multi-channel surround sound system. In this case you would want to set the crossover control on the back of the Subwoofer to 200Hz or direct. The reason being we are going to control all bass management in the receiver rather than relying on the subwoofer. In a basic home-theater setup, managing the bass in the pre-amp stage of the receiver will typically yield the best system performance.

Now for the settings in your receiver.
1. Set the speaker selection to small not large or full
2. Depending upon your system, you may be asked to provide a crossover point for your small speakers. Given your specifications, I recommend setting the speaker crossover settings to 120Hz. Assuming a 12dB/ Octave slope this should give a good crossover range between your mains and subwoofer.
3. Next you will have an LFE crossover setting, again given your system, I would set this between 100-120Hz.

It is a common mistake to set the crossover points at or near the lowest stated speaker frequency response specification. The reason this is such a common failure is the common misconception that a crossover filter acts like a cut filter. A cut filter would cut out all frequencies at a specific frequency, where the crossover rolls off the frequency response depending upon the configured slope. Most standard A/V gear will come equipped with a 12 dB per octave slope, though some may have an even gentler 6dB per octave. To put this into a frame of reference, 10dB is approximately twice or half the perceived volume depending upon whether you are plus or minus. So setting your crossover at 120Hz will roll off bass to the main speakers, by the time you get down to 60Hz the signal strength to your main speakers will be approximately half the volume. This should allow a smooth transition of bass signals between your subwoofer and your main speakers.

Disclaimer: As with all things audio your individual equipment, setup, and preferences will affect your results, there is never any one "right" answer and you should always do what sounds best to you. Experimentation will yield the best results, you should always go with what sounds best to you and not what someone else's belief of what is correct or not. Feel free to seek advice as a starting point, but at the end of the day it is your system and you're the one who will be listening to it. All that matters is that you enjoy your sound system.
post #9229 of 9547
Quote:
Originally Posted by Rob Morse View Post

I will assume that you are connecting the impact series subwoofer to a home-theater receiver and are setting up a multi-channel surround sound system. In this case you would want to set the crossover control on the back of the Subwoofer to 200Hz or direct. The reason being we are going to control all bass management in the receiver rather than relying on the subwoofer. In a basic home-theater setup, managing the bass in the pre-amp stage of the receiver will typically yield the best system performance.

Now for the settings in your receiver.
1. Set the speaker selection to small not large or full
2. Depending upon your system, you may be asked to provide a crossover point for your small speakers. Given your specifications, I recommend setting the speaker crossover settings to 120Hz. Assuming a 12dB/ Octave slope this should give a good crossover range between your mains and subwoofer.
3. Next you will have an LFE crossover setting, again given your system, I would set this between 100-120Hz.

It is a common mistake to set the crossover points at or near the lowest stated speaker frequency response specification. The reason this is such a common failure is the common misconception that a crossover filter acts like a cut filter. A cut filter would cut out all frequencies at a specific frequency, where the crossover rolls off the frequency response depending upon the configured slope. Most standard A/V gear will come equipped with a 12 dB per octave slope, though some may have an even gentler 6dB per octave. To put this into a frame of reference, 10dB is approximately twice or half the perceived volume depending upon whether you are plus or minus. So setting your crossover at 120Hz will roll off bass to the main speakers, by the time you get down to 60Hz the signal strength to your main speakers will be approximately half the volume. This should allow a smooth transition of bass signals between your subwoofer and your main speakers.

Disclaimer: As with all things audio your individual equipment, setup, and preferences will affect your results, there is never any one "right" answer and you should always do what sounds best to you. Experimentation will yield the best results, you should always go with what sounds best to you and not what someone else's belief of what is correct or not. Feel free to seek advice as a starting point, but at the end of the day it is your system and you're the one who will be listening to it. All that matters is that you enjoy your sound system.

Sorry, i failed to mention that i'm not using a receiver. My setup is a simple computer based setup, using a soundcard with the RCA output split to my speakers and to my subwoofer, thus i see the crossover function at the back of the subwoofer as my only means of bass management?

I will upon ur advice in the right direction, try to experiment with the various settings..

Currently my volume is at 10 oclock, and crossover as mentioned at the 11 oclock, phase is at 0.
post #9230 of 9547
Quote:
Originally Posted by julaha View Post

Sorry, i failed to mention that i'm not using a receiver. My setup is a simple computer based setup, using a soundcard with the RCA output split to my speakers and to my subwoofer, thus i see the crossover function at the back of the subwoofer as my only means of bass management?

I will upon ur advice in the right direction, try to experiment with the various settings..

Currently my volume is at 10 oclock, and crossover as mentioned at the 11 oclock, phase is at 0.

Since you are sending full range signal to the subwoofer I would experiment with the crossover between 100-120 Hz.
post #9231 of 9547
Hey Rob.

I have a question about the Subsonic Slope for the DD18. By default, it's set to 24. I was thinking about changing it the 12; but, I read that the lower the Subsonic Slope is set the that frequency will begin rolling off higher above 15Hz. For example, with the Subsonic Slope set to 24, the frequency will not begin to rolloff until it reached 15Hz vs if the Subsonic Slope was set to 12, then the frequency may begin to rolloff around 18Hz. I was wondering if that's really true? Also, would you recommend lowering the Subsonic Slope to something like 12?
post #9232 of 9547
Quote:
Originally Posted by ninja12 View Post

Hey Rob.

I have a question about the Subsonic Slope for the DD18. By default, it's set to 24. I was thinking about changing it the 12; but, I read that the lower the Subsonic Slope is set the that frequency will begin rolling off higher above 15Hz. For example, with the Subsonic Slope set to 24, the frequency will not begin to rolloff until it reached 15Hz vs if the Subsonic Slope was set to 12, then the frequency may begin to rolloff around 18Hz. I was wondering if that's really true? Also, would you recommend lowering the Subsonic Slope to something like 12?

There are two subsonic settings, the first is the subsonic frequency, this is the point the bottom end rolls off regardless of the slope setting. The second is the subsonic slope which determines how fast the frequencies below the subsonic frequency point are rolled off.
post #9233 of 9547
Quote:
Originally Posted by ninja12 View Post

Hey Rob.

I have a question about the Subsonic Slope for the DD18. By default, it's set to 24. I was thinking about changing it the 12; but, I read that the lower the Subsonic Slope is set the that frequency will begin rolling off higher above 15Hz. For example, with the Subsonic Slope set to 24, the frequency will not begin to rolloff until it reached 15Hz vs if the Subsonic Slope was set to 12, then the frequency may begin to rolloff around 18Hz. I was wondering if that's really true? Also, would you recommend lowering the Subsonic Slope to something like 12?

Quote:
Originally Posted by Rob Morse View Post

There are two subsonic settings, the first is the subsonic frequency, this is the point the bottom end rolls off regardless of the slope setting. The second is the subsonic slope which determines how fast the frequencies below the subsonic frequency point are rolled off.
Yes, the second subsonic slope is what my original question is about.
post #9234 of 9547
Quote:
Originally Posted by ninja12 View Post

Hey Rob.

I have a question about the Subsonic Slope for the DD18. By default, it's set to 24. I was thinking about changing it the 12; but, I read that the lower the Subsonic Slope is set the that frequency will begin rolling off higher above 15Hz. For example, with the Subsonic Slope set to 24, the frequency will not begin to rolloff until it reached 15Hz vs if the Subsonic Slope was set to 12, then the frequency may begin to rolloff around 18Hz. I was wondering if that's really true? Also, would you recommend lowering the Subsonic Slope to something like 12?

Quote:
Originally Posted by Rob Morse View Post

There are two subsonic settings, the first is the subsonic frequency, this is the point the bottom end rolls off regardless of the slope setting. The second is the subsonic slope which determines how fast the frequencies below the subsonic frequency point are rolled off.

Quote:
Originally Posted by ninja12 View Post


Yes, the second subsonic slope is what my original question is about.

That was my answer. The slope only adjusts the rate of the roll off below the frequency set in the subsonic frequency field.

If your subsonic filter is set to 15 Hz, then this is the point at which low end frequencies will be rolled off from. Frequencies BELOW 15Hz (not higher) will be rolled off based on the subsonic slope. Adjusting the slope does not change the starting point of the slope only how steep or gradual it is from the set start point.
post #9235 of 9547
As one who has played with this subject for decades, I would recommend using the default (15hz-24db slope) setting. It's a very good setting for your sub.
Curt
post #9236 of 9547
Quote:
Originally Posted by curt c View Post

As one who has played with this subject for decades, I would recommend using the default (15hz-24db slope) setting. It's a very good setting for your sub.
Curt

I concur, this is the settings I use.

Disclaimer: As with all things audio your individual equipment, setup, and preferences will affect your results, there is never any one "right" answer and you should always do what sounds best to you. Experimentation will yield the best results, you should always go with what sounds best to you and not what someone else's belief of what is correct or not. Feel free to seek advice as a starting point, but at the end of the day it is your system and you're the one who will be listening to it. All that matters is that you enjoy your sound system.
post #9237 of 9547
Quote:
Originally Posted by curt c View Post

As one who has played with this subject for decades, I would recommend using the default (15hz-24db slope) setting. It's a very good setting for your sub.
Curt

Quote:
Originally Posted by Rob Morse View Post



I concur, this is the settings I use.

Disclaimer: As with all things audio your individual equipment, setup, and preferences will affect your results, there is never any one "right" answer and you should always do what sounds best to you. Experimentation will yield the best results, you should always go with what sounds best to you and not what someone else's belief of what is correct or not. Feel free to seek advice as a starting point, but at the end of the day it is your system and you're the one who will be listening to it. All that matters is that you enjoy your sound system.
Thanks for the response Curt and Rob. I will definitely leave it at 15Hz/24db. I was just curious. Curt, it's good to see that you still hang around these parts.
post #9238 of 9547
Power supply received and tried, did not solve the low rumbling problem. Thanks for sending the power supply. What next? I still have not tried on a different subwoofer yet! I will on Friday, and on a JL Audio F110!
post #9239 of 9547
Quote:
Originally Posted by richmond5 View Post

Power supply received and tried, did not solve the low rumbling problem. Thanks for sending the power supply. What next? I still have not tried on a different subwoofer yet! I will on Friday, and on a JL Audio F110!
If the problem is present on the other subwoofer, then the next step would be service.
post #9240 of 9547
Hi Rob, quick question. I have an Optimum 10 and when I go to setup the auto EQ I get 2 sweeps and it stops. Basically it does the same thing when I don't even plug in the Mic. Do you think the Mic is bad or internal?

Thanks
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