Eminence LAB 15 + Hypex DS8.0 sealed box - Page 6

Veke76 · 26th September 2012, 05:14 PM

Quote:

Originally Posted by Veke76

I'll make a cable with R1=10kohm R2=10kohm ratio will be 2:1. I'll report back here if I get this right.

With new cables gain ends up 11 o'clock position to play at balance. Ratio is actually 1:1!! Sub input takes some volts but I believe at full power it will overdrive/damage. Strangely the balance is what I wanted so this is some sort of progress.

Eminence Lab 15 and Hypex DS8.0 is ok combination now that i found out how to tweak out more oomph.

Veke76 · 6th November 2012, 10:24 AM

The acoustic problems in the room were so annoying so I bought Anti-Mode 8033 S-II.
It took automatically six freq sweeps...it lasted for ages.
The sound is bit quiet now. I think those peaks are now flattened and I can hear some new sounds which were hidden under.

The input signal to antimode clipped with 1:1 cables so I'll try 1:10 cables or I'll make new cables with adjustable ratio.

Veke76 · 3rd December 2012, 12:12 PM

Here are current freq sweeps of my room with LAB 15 + Anti-Mode. Difference with AM ON/OFF and one sweep with higher volume.

Veke76 · 4th December 2012, 01:38 PM

Freq sweeps how loud it will go. Sweeps approached maximum with red line.

Veke76 · 14th December 2012, 09:38 AM

Now that I've have my sealed sub working I've got interested in TH and TQWP enclosures. How an upgrade to these enclosures might work. Basically I need 100 dB@1W and max spl 125 dB. Is it even possible with Lab 15? Enclosure could be 60x60x60cm cube or tall 50x50x120cm for example. What I measured from sealed Lab 15 I've got some corner room gain. So hopefully freq will extend low as 20 Hz in room.

40Hz TH

3015lf TH @ 35-40hz but only 20" deep help

15" kicker l7 30hz box design help !!

Single sheet TH challenge

THAM15 - a compact 15" tapped horn

Cubo15

tb46 · 01:43 PM

Hi Veke76,

To get down to 20Hz you'll need a large TH (I ended up with some simulations @ 340/390 L that looked promising), maybe something along the lines suggested by bjorno would work (MLTL), see: Posts #7/#9 here: Lab 15 design suggestions for HT use?

Regards,

Veke76 · 14th December 2012, 03:16 PM

Thanks I forgot that thread existed. I'll post there what I had in mind

Veke76 · 14th December 2012, 04:36 PM

Well I need F3 30-35Hz design. Usually with WinISD I try to hit F15 @ 20Hz. Seems that room gain adds up that much so that equals F3 point (in room).

14th December 2012, 09:38 AM	#55
Veke76 diyAudio Member Join Date: Nov 2010	Lab 15 + alternative enclosures Now that I've have my sealed sub working I've got interested in TH and TQWP enclosures. How an upgrade to these enclosures might work. Basically I need 100 dB@1W and max spl 125 dB. Is it even possible with Lab 15? Enclosure could be 60x60x60cm cube or tall 50x50x120cm for example. What I measured from sealed Lab 15 I've got some corner room gain. So hopefully freq will extend low as 20 Hz in room. 40Hz TH 3015lf TH @ 35-40hz but only 20" deep help 15" kicker l7 30hz box design help !! Single sheet TH challenge THAM15 - a compact 15" tapped horn Cubo15

14th December 2012, 01:37 PM	#56
tb46 diyAudio Member Join Date: Jan 2006 Location: Texas	Hi Veke76, To get down to 20Hz you'll need a large TH (I ended up with some simulations @ 340/390 L that looked promising), maybe something along the lines suggested by bjorno would work (MLTL), see: Posts #7/#9 here: Lab 15 design suggestions for HT use? Regards, __________________ Oliver Last edited by tb46; 14th December 2012 at 01:43 PM.

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6th November 2012, 10:24 AM	#52
Veke76 diyAudio Member Join Date: Nov 2010	The acoustic problems in the room were so annoying so I bought Anti-Mode 8033 S-II. It took automatically six freq sweeps...it lasted for ages. The sound is bit quiet now. I think those peaks are now flattened and I can hear some new sounds which were hidden under. The input signal to antimode clipped with 1:1 cables so I'll try 1:10 cables or I'll make new cables with adjustable ratio.

14th December 2012, 03:16 PM	#57
Veke76 diyAudio Member Join Date: Nov 2010	Thanks I forgot that thread existed. I'll post there what I had in mind

14th December 2012, 04:36 PM	#58
Veke76 diyAudio Member Join Date: Nov 2010	Well I need F3 30-35Hz design. Usually with WinISD I try to hit F15 @ 20Hz. Seems that room gain adds up that much so that equals F3 point (in room).