HSU Research Forum (HRF)  

Go Back   HSU Research Forum (HRF) > Hsu Central > Hsu Research - Setup and Placement Recommendations
Become a member Forum Help Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old April 17th, 2019, 4:28 PM
terryjg55 terryjg55 is offline
Registered User
 
Member Since: Apr 2019
Posts: 1
terryjg55 is on a distinguished road
Confused about volume control on VTF-3 MK5 HP

I just received my new VTF-3 MK5 HP and am getting ready to add it to my system. I have a new Onkyo receiver (TX-NR787 THX Certified) that will be doing the initial setup for me. It uses a proprietary equalization system, rather than Audessy, to balance everything.

I am curious why the recommended setting for the volume control is so low (8 O'clock, which is almost the minimum). It seems to me (an admitted noob) that a somewhat higher volume setting on the sub would be asking for less from the amplifier.

What am I missing?
Reply With Quote
  #2  
Old April 18th, 2019, 8:30 AM
Kevin_Hsu Kevin_Hsu is offline
Administrator
 
Member Since: Jun 2012
Location: CA, USA
Posts: 332
Kevin_Hsu is on a distinguished road
Hi there,

It really depends on your room, but our recommended setting would be to set the sub volume around 9 o'clock. Though, admittedly the sub is less sensitive as it was before, it is still fairly sensitive, so setting the sub upwards to 12-1 o'clock is generally a fairly high setting. However, it is worth noting that it also depends on the level that the sub is receiving from the receiver as well. For example, in many cases, the LFE channel level can go from -12 to +12 dB (24 dB difference). Sometimes it can be more than that, but that setting determines how much voltage is being sent to the sub. All things being equal, +12 on the LFE setting would mean that you wouldn't be able to turn up the volume on the sub as much before it starts to hit its limits versus having a -12 dB setting. Sensitivity of the speakers and the type of material being played also have an impact on that as well.

You are correct in that a higher setting of volume on the sub means that you don't have to turn up the channel level as much from the receiver end to get the same output. However, if you run the auto-calibration software and the LFE level is set to 0 or below, then it won't matter as much. So what I would do, if the receiver doesn't have you set a level on the sub to begin with, is run the calibration with the volume a 9 o'clock. After that, check your speaker settings to make sure your speakers are set to small, 80 Hz crossover is generally a good starting point unless your speakers are on the smaller side (4" midrange and below). Also check your channel levels. If the receiver set your sub to -12 and your speakers are around 0, that means your sub is set to high, if it is set to +12 and your speakers are set to 0, your sub is set too low.
Reply With Quote
  #3  
Old October 2nd, 2019, 3:58 PM
DS3 DS3 is offline
Registered User
 
Member Since: Aug 2019
Posts: 13
DS3 is on a distinguished road
For what it’s worth, I have the 686 and it always set my VTF3.5 high (+2 or 3db) with sub gain around 9 o’clock until I got a y-adapter. At one point I even had the sub gain close to 12 and it still set it at +1db. Bizarre. Now it’s set at -1db in the AVR with the sub gain a hair over 10 o’clock. I think it just has a low voltage LFE signal.
Reply With Quote
  #4  
Old October 3rd, 2019, 2:15 PM
Kevin_Hsu Kevin_Hsu is offline
Administrator
 
Member Since: Jun 2012
Location: CA, USA
Posts: 332
Kevin_Hsu is on a distinguished road
Hard to say, but I've heard a few others report that as well. It's quite strange. With the y-adapter, that does double in the input voltage going to the sub so it ends up adding an additional 6 dB to the input signal. So technically, with the y-splitter, the channel level should be around -4 or -3 dB.
Reply With Quote
  #5  
Old October 4th, 2019, 5:42 AM
DS3 DS3 is offline
Registered User
 
Member Since: Aug 2019
Posts: 13
DS3 is on a distinguished road
Quote:
Originally Posted by Kevin_Hsu View Post
Hard to say, but I've heard a few others report that as well. It's quite strange. With the y-adapter, that does double in the input voltage going to the sub so it ends up adding an additional 6 dB to the input signal. So technically, with the y-splitter, the channel level should be around -4 or -3 dB.

I'm planning on running AccuEq again now that I have the y-adapter to see if it helps my 686 set better levels automatically. If it still acts funny, I will just go back to setting the sub gain at just over 10 o'clock and set the AVR sub level to around -3dB using the dB app on my phone.

One question on mic placement...I'm using the Onkyo mic on a high-end photo tripod (carbon fiber, ~$1500 including the head) so it is pretty good about not transmitting extra vibrations, but when I set it up, should I keep it solely on the sofa cushions and not let it touch the floor to make it as isolated as possible?
Reply With Quote
  #6  
Old October 4th, 2019, 10:14 AM
Kevin_Hsu Kevin_Hsu is offline
Administrator
 
Member Since: Jun 2012
Location: CA, USA
Posts: 332
Kevin_Hsu is on a distinguished road
Quote:
Originally Posted by DS3 View Post
I'm planning on running AccuEq again now that I have the y-adapter to see if it helps my 686 set better levels automatically. If it still acts funny, I will just go back to setting the sub gain at just over 10 o'clock and set the AVR sub level to around -3dB using the dB app on my phone.

One question on mic placement...I'm using the Onkyo mic on a high-end photo tripod (carbon fiber, ~$1500 including the head) so it is pretty good about not transmitting extra vibrations, but when I set it up, should I keep it solely on the sofa cushions and not let it touch the floor to make it as isolated as possible?
That probably won't matter too much to be honest, but I would just keep it on the sofa to be closest to your ear position.
Reply With Quote
  #7  
Old October 4th, 2019, 11:56 AM
DS3 DS3 is offline
Registered User
 
Member Since: Aug 2019
Posts: 13
DS3 is on a distinguished road
Quote:
Originally Posted by Kevin_Hsu View Post
That probably won't matter too much to be honest, but I would just keep it on the sofa to be closest to your ear position.

You were correct. I ran it earlier with the sub at 9 o'clock, AVR trim at 0dB and AccuEQ set the trim +1dB, so I moved the sub gain to 10 o'clock, reran AccuEQ and it then set it at +2dB?!? It also set the distance at about half (~7ft) of what it actually measures at (~15ft). I cannot explain this and I give up on AccuEQ as it obviously cannot calibrate subs.

So I did it manually, correcting the distance, setting the sub gain back to 9 o'clock, AVR trim to 0dB and increasing master volume until I got 78-80dB for 50Hz at MLP, which occured at -25dB master volume. I then backed AVR trim to -5dB and bumped the sub gain (now just under the next tick up from 9 o'clock)to get the MLP SPL back to 78-80dB.

Does this sound about right? Any other thoughts/suggestions?
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump
 


All times are GMT -8. The time now is 2:50 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Forum Rules The Golden Rule: Treat others as you would want to be treated.

Technical Support: The best way to get tech support for serious issues is to call or email us. Questions asked on the forum may not be answered by qualified professionals.

No "Flaming": Spiteful talk and flaming wars will lead to "time-outs" for parties involved.

Shootouts: Shootouts are comparisons between products. We need to know about shootouts before allowing them on the forum, so call us and talk to the director of Sales before posting. Otherwise, your shootout may be removed.

Add to Reputation: Once you are a registered member, you can click this icon to add to the tally of other members' Rep Points. You must vote for seven other people before you can vote for the same person twice.

Report Bad Posts: Once you register, click this icon to let Administrators know if they should review a post. Please be specific as to why action might be needed.

HSU RESEARCH IS NOT RESPONSIBLE FOR COMMENTS MADE BY THIRD PARTY INDIVIDUALS ON THIS FORUM.

Thanks for reading the rules. Have a good time :)

In Association With