Topic: connecting a powered sub to a tube amp wthout lineout...

[XXXyzledge]

how oh how?

[JojoD818]

Brader Jim,

Will suggest sa speaker level sana ang connection but the inherent hum from a tube amp would translate to a constant low frequency signal from the sub.

Kung walang lineout/sub out, why not put one on the amp?  At least line level yun papunta sa sub, hindi na dumaan sa tube amp. Yun nga lang void warranty mo sa tube amp for sure. Ano pala tube amp yan sir?

[muypogi]

how oh how?

I used to have a Dared i30 and an AMX KT88 amp, which I connected via speaker level inputs to an A-Audio sub.  Did not notice any hum on the sub.  Stereophile also recommends speaker level out as the preferred input vs RCA sub outs, as this integrates better with the main speakers.

[XXXyzledge]

Brader Jim,

Will suggest sa speaker level sana ang connection but the inherent hum from a tube amp would translate to a constant low frequency signal from the sub.

Kung walang lineout/sub out, why not put one on the amp?  At least line level yun papunta sa sub, hindi na dumaan sa tube amp. Yun nga lang void warranty mo sa tube amp for sure. Ano pala tube amp yan sir?

wow!
the master is in the house!

Cayin A55T bro...
ho-hook up ko sana velodyne ko with her....
tia!

[JojoD818]

Brader Jim 

Why not try speaker level input, but I suggest you don't do sub-sat connection. Amp to Main Speakers and Amp to Sub.

Good luck bro 

[XXXyzledge]

Brader Jim 

Why not try speaker level input, but I suggest you don't do sub-sat connection. Amp to Main Speakers and Amp to Sub.

Good luck bro 

will try that masterJ!
thanks!

[XXXyzledge]

dagdag katanungan lang po.....

pwede ko ba kabitan ng pre-amp with a lineout itong a55t ko?

[JojoD818]

pwede, pero parang redundant na yun Brader since the gain of the input section of your amp is already sufficient enough to drive it.

[XXXyzledge]

pwede, pero parang redundant na yun Brader since the gain of the input section of your amp is already sufficient enough to drive it.

sipag tlga sumagot n MasterJ !!!

Salamat brader! merry christmas !!!

[JojoD818]

sipag tlga sumagot n MasterJ !!!

Salamat brader! merry christmas !!!

hahaha! Merry Christmas Brader Jim!!!

[XXXyzledge]

Brader Jim 

Why not try speaker level input, but I suggest you don't do sub-sat connection. Amp to Main Speakers and Amp to Sub.

Good luck bro 

eto pala yun masterj!

sorry! not attentive enough!

thanks thanks!

[JojoD818]

eto pala yun masterj!

sorry! not attentive enough!

thanks thanks!

di kasi isuot ang salamin eh hahaha!

good luck Brader, enjoy!

[XXXyzledge]

she's singing now!

masterj!
if you ae not busy na, would like to have that lineout pa rin....

thanks thanks!

[louie1]

taken from my sub manual....meri xmas

[XXXyzledge]

taken from my sub manual....meri xmas

thanks for the post bro!
merry christmas!

[Onkyo606]

she's singing now!

masterj!
if you ae not busy na, would like to have that lineout pa rin....

thanks thanks!

congrats brader

[XXXyzledge]

congrats brader

ei thanks bro!

[Onkyo606]

ei thanks bro!

try mo yung pc12 mo sa odyo try lang hehehehe

[bass_nut]

Brader Jim 

Why not try speaker level input, but I suggest you don't do sub-sat connection. Amp to Main Speakers and Amp to Sub.

Good luck bro 

newbie question lang po Master J.

speaker level output [amp => main speakers  +  amp => sub]

hindi po ba the load impedance would be lower for the amp to drive ? say from 8 omega to 4 omega ?

iniisip ko din kasi iyan in case i config one of my integrated amps without line level sub out.

TIA 

[XXXyzledge]

try mo yung pc12 mo sa odyo try lang hehehehe

syarap brader !!!  wahahahahahaha!!!! 

[JojoD818]

she's singing now!

masterj!
if you ae not busy na, would like to have that lineout pa rin....

thanks thanks!

congrats Brader for a successful connection! 

sure thing, pag tapos na HT ko (kailan pa kaya yun)...   

[JojoD818]

taken from my sub manual....meri xmas

Sir if I may, that's a sat-sub connection and ok lang sana yan if that's a pass thru, but in my experience with sub plate amps they always have a 6dB/octave hpf going to the main speakers in a form of a non-polar capacitor. But it is still a valid connection nonetheless po. 

Instead of the main speakers going through the plate amp, we just "sample" the signal by connecting a separate speaker wire from AVR/Amp to the sub's plate amp. 

[XXXyzledge]

congrats Brader for a successful connection!  

sure thing, pag tapos na HT ko (kailan pa kaya yun)...  

thanks bro sa advise!

with the connection, ganda ng buga ng woofer! at the same time,
voice clarity is still superb!

masterJ, need help sa paguudyok sa HT project?
will call in the KULAM boys if u need us !!! 

[JojoD818]

newbie question lang po Master J.

speaker level output [amp => main speakers  +  amp => sub]

hindi po ba the load impedance would be lower for the amp to drive ? say from 8 omega to 4 omega ?

iniisip ko din kasi iyan in case i config one of my integrated amps without line level sub out.

TIA 

Hi Doc,

The answer is NO. There wouldn't be a noticeable change in load impedance (in the Amp's point of view, at least) since all sub plate amps (including those cheap ones or diy) employs a form of speaker level to line level conversion circuit which has a relatively high impedance, too high to "touch" the main speakers actual impedance. It is safe Doc, go ahead and try it.  

HTH  

[JojoD818]

thanks bro sa advise!

with the connection, ganda ng buga ng woofer! at the same time,
voice clarity is still superb!

welcome Brader anytime...

if you have an SPL meter (hint: si sir Joey meron  ), and with the help of a calibration cd, you can configure your sub and main speakers to still attain an overall flat response across the band. Para hindi maging tunog car audio na pang SPL drag hehehe... (unless yun ang gusto mo pwede din naman  )

masterJ, need help sa paguudyok sa HT project?
will call in the KULAM boys if u need us !!! 

naku wag na po please!!! I have enough KULAM going on already hahaha! 
magtatanong na lang ako sa inyo pag i-setup ko na ang amin munting HT...

[bass_nut]

many thanks for a very reassuring advise, Master J 



suot ko na yung eye glasses ko kaya here is...

Merry Christmas to you Master J, brother Jim, love ones and all our friends here at PinoyDVD !!! 

[JojoD818]

many thanks for a very reassuring advise, Master J 



suot ko na yung eye glasses ko kaya here is...

Merry Christmas to you Master J, brother Jim, love ones and all our friends here at PinoyDVD !!! 

anytime po Doc 

hahaha ayan nakasuot na ang glasses... 


Merry Christmas!!!

[XXXyzledge]

merry christmas doc fer!

cge masterJ.... pag ready ka na pakulam..... pm mo lang isa sa kulam boyz...
dudumugin ka namin!!! 

bili nga ako spl meter!
madali lang ba gamitin yun?

[JojoD818]

cge masterJ.... pag ready ka na pakulam..... pm mo lang isa sa kulam boyz...
dudumugin ka namin!!! 

hahaha sige sige ask ako ng tulong sa inyo pag may question tayo...

bili nga ako spl meter!
madali lang ba gamitin yun?

madali lang! para ka lang naglalaro ng psp nun 
seriously, test tones lang tapos excel o any spreadsheet para makita mo sa graph kung flat na response.

[Nelson de Leon]

Sa speakewr output din ako kumaha ng signal before i had a preamp. Speaker line output => L.O.D. => active crossover => sub amp => sub.