***Official HSU owners/support thread!*** - Page 176

Originally Posted by Stylz25

Oh ok thanks for the info! Greatly appreciated.
Got worried after reading an audioholics review on their website
Quote on their website " My only reservation with the product is the amplifier reliability. Without a heatsink, the long term life of this may be a question. Still, with a two year warranty, that gives you plenty of time to pound it and know if if burns up, Hsu Research will honor your warranty. That said, if you expect high outputs and intend to drive the sub like a drunken college student at a frat house party, it might be better for your neighbors if your amp does blow the fuse. "

Originally Posted by dr_hsu

Volume is way too high - almost 12 o'clock! Also, crossover should be set to 'out'. EQ should be set to EQ2 (down). Open both ports (you did not take a photo of the ports). Follow the instructions above and see if it's better.

Originally Posted by intoflatlines

Noob question.. why is almost 12 o clock way too high? I apologize for my ignorance, but why does the knob go all the way if almost halfway up is too high? Mine is set to between 10 and 11 o clock depending on what is playing.. I don't want to do any damage!

Originally Posted by rwe416

Just watched Iron Man, for the first time, and my house is still shaking. My VTF-15H never skipped a beat. Had it set at EQ2, Q2 and two ports open. WOW this sub is amazing. I recommend it to any anyone that is thinking about buying one. I have not heard any of the other ID subs but I feel as though I have made the right choice. Wife wants to order another in a couple of weeks.

Originally Posted by EJ

I have 2 Hsu subs, a VTF-3R, and a first gen VTF-3. Both have the switch for auto<->off
with no option for "always on". I was having the problem of the subs not kicking in at lower volumes. I did what I thought to be the logical thing, and turned the volume of the sub down, while increasing the signal from the receiver.

Is there a setting on the sub that's "too low" and the subwoofer's performance is compromised in some way? I have it set at about 25% now, and it has corrected most issues. I guess I'm wondering how low can I go.

Originally Posted by dr_hsu


Volume is way too high - almost 12 o'clock! Also, crossover should be set to 'out'. EQ should be set to EQ2 (down). Open both ports (you did not take a photo of the ports). Follow the instructions above and see if it's better.

Originally Posted by rhinomike

First off thank u for all of the help. It is greatly apreciated

I did what u said. Turned the volume down to about 11 o'clock turned eq and crossover like u said. Both ports were already open. No more popping. But there is not nearly as much bass now. I guess I was pushing the sub too hard. If I want more bass I better add another sub.

Originally Posted by dr_hsu


No wonder it was popping! Your installer should be responsible for any damage to the sub. It is stated clearly in the manual that you should NEVER operate the sub with both ports open and EQ1.

Did you re-run Audyssey auto calibration? Remember to set the sub to one port open, EQ1, Q=0.7 for the Audyssey calibration. After calibration, set to two port open, EQ2, Q=0.3. Bass level should be correct after Audyssey recalibration.

A VTF-15H would be more appropriate for that space. Another option for you is to add another VTF-3 MK4. You can put the second one on the other end of that row of seats. If it's not practical to put it there, you can put it where you marked 'table' for the row behind you.

Originally Posted by dr_hsu

Depends on the sub out level as well. We built a lot of gain into the amp so folks with two channel stereo and efficient speakers (Klipschorns, for example, 104 dB/W) will not have trouble matching. If your main speakers are very efficient, and the sub out level on your receiver is not high, you are fine. Also, if you have the sub set to two ports open, EQ2, Q 0.3, the sub can handle higher levels safely.

Originally Posted by rhinomike

I was just watching Mission Impossible Ghost Protocol and the sub popped again a few times. I turned the volume down to about the 10 o'clock position and it stopped popping. I have never ran the Audessey but I will try to figure it out tomorrow. Thanks again for all f your help.

Originally Posted by dr_hsu


The woofer may have been damaged by two ports open, EQ1, and 12 o'clock volume. Anyway, try re-running Audyssey tomorrow and see what happens.

Originally Posted by rhinomike

Ok I will try to do the Audyssey today. After that where about should the volume be set?

Originally Posted by intoflatlines

What about with both ports open and turbo mounted on a VTF3.3?

Originally Posted by dr_hsu

Remember, set the sub to one port open, EQ1, Q=0.7, volume 9 o'clock, phase 0, crossover out. Run Audyssey auto calibration with mike at your listening position. After calibration, check receiver's crossover frequency and sub out level. If crossover is not 80 Hz, set them manually to 80 Hz. If sub out level is not between +3 and -3, adjust the subwoofer's volume control and re-run. e.g., if sub out is at -10, you adjust the subwoofer's volume control down a bit. If it's at +10, turn up the subwoofer's volume to 10 o'clock and re-calibrate.

Once the crossover is at 80 Hz and sub out level on receiver is between +3 and -3, set the subwoofer to two ports open, EQ2, Q=0.3. The subwoofer should be at the correct level (accurate bass - if a movie sounds bass shy, it's because the recording has not much bass). You should not need to do anymore volume adjustments on the subwoofer.

If you want to adjust for more output, do it with the receiver's sub out level control. that way, you can easily set it back to the accurate position. Just remember where Audyssey set it to.

How high did you usually set the volume on the receiver when watching your movies - like Avatar, Ghost Protocol? Which scene on the Ghost Protocol did you get popping?

Originally Posted by dr_hsu

Remember, set the sub to one port open, EQ1, Q=0.7, volume 9 o'clock, phase 0, crossover out. Run Audyssey auto calibration with mike at your listening position. After calibration, check receiver's crossover frequency and sub out level. If crossover is not 80 Hz, set them manually to 80 Hz. If sub out level is not between +3 and -3, adjust the subwoofer's volume control and re-run. e.g., if sub out is at -10, you adjust the subwoofer's volume control down a bit. If it's at +10, turn up the subwoofer's volume to 10 o'clock and re-calibrate.

Once the crossover is at 80 Hz and sub out level on receiver is between +3 and -3, set the subwoofer to two ports open, EQ2, Q=0.3. The subwoofer should be at the correct level (accurate bass - if a movie sounds bass shy, it's because the recording has not much bass). You should not need to do anymore volume adjustments on the subwoofer.

If you want to adjust for more output, do it with the receiver's sub out level control. that way, you can easily set it back to the accurate position. Just remember where Audyssey set it to.

How high did you usually set the volume on the receiver when watching your movies - like Avatar, Ghost Protocol? Which scene on the Ghost Protocol did you get popping?

Originally Posted by newfmp3

Is there no Canadian dealer for HSU anymore?

What a shame.

Originally Posted by Stylz25

Nope and I know! Want the VTF-15H's so bad!!

Originally Posted by newfmp3


have you tried getting a quote for shipping? Just curious as to how bad it was. I noticed they use FedEx - which is horrible for duties from my experience. As bad as UPS.

USPS is the way to go.

I got my last HSU fom a Canadian retailer. Too bad they aren't around now.

Originally Posted by Stylz25

Yeah the quote for 1 VTF-15H shipped to me in Alberta was just shy of $300!! Total cost was going to be around $1350! But could be more if there is additional charges and duties is more!

Originally Posted by lrtrees

Do the HSU's ever go on sale. Specificallhy the VTF-3 MK4? I am not usre how that model has been out.
I have spent some time on here and have been helped by some of the good folk here
My HT area is just under 10,000^3 and I am now thinking about two of the VTF-3 MK4's or a VTF-15H. I can more easily afford the one 15" vs the two 12"s.

Thanks

Originally Posted by newfmp3

have you tried getting a quote for shipping? Just curious as to how bad it was. I noticed they use FedEx - which is horrible for duties from my experience. As bad as UPS.

USPS is the way to go.

I got my last HSU fom a Canadian retailer. Too bad they aren't around now.

Originally Posted by lrtrees

Do the HSU's ever go on sale. Specifically the VTF-3 MK4? I am not sure how that model has been out.
I have spent some time on here and have been helped by some of the good folk here
My HT area is just under 10,000^3 and I am now thinking about two of the VTF-3 MK4's or a VTF-15H. I can more easily afford the one 15" vs the two 12"s.

Thanks

Originally Posted by lrtrees

Do the HSU's ever go on sale. Specificallhy the VTF-3 MK4? I am not usre how that model has been out.
I have spent some time on here and have been helped by some of the good folk here
My HT area is just under 10,000^3 and I am now thinking about two of the VTF-3 MK4's or a VTF-15H. I can more easily afford the one 15" vs the two 12"s.

Thanks

Originally Posted by dr_hsu

Unfortunately USPS do not handle large packages like the VTF-15H or VTF-3 MK4. May be worthwhile to have it ship to someone on this side of the border and drive over and pick it up.