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Go Back   Blu-ray Forum > Audio > Pre/Pro, Amplifiers and Separate Systems


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Old 01-22-2009, 11:33 PM   #1
Opips2 Opips2 is offline
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Post sub with in build amp Vs. sparates amplifier

I listen sound better a huge sub with in build amp. then mulit-subs is better than sparates amp is expensively price.

Why buy a sparates amplifier only speaker and not sub?

What your opinion??
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Old 01-22-2009, 11:56 PM   #2
Opips2 Opips2 is offline
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Question

My theory

the sub with in-build amp.

only a sub tone sound 3Hz to 200Hz give more bass to strong wavelenght. that's low-frequency is low-pitched sounds ranging from 3-200 Hz.

I think a sub is 800Hz maximum tone sound?
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Old 01-23-2009, 12:31 AM   #3
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Quote:
Originally Posted by Opips2 View Post
I listen sound better a huge sub with in build amp. then mulit-subs is better than sparates amp is expensively price.

Why buy a sparates amplifier only speaker and not sub?

What your opinion??
It looks like English, but it doesn’t sound like it! Someone is getting lost in translations.

What's your opinion?
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Old 01-23-2009, 12:42 AM   #4
Opips2 Opips2 is offline
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Quote:
Originally Posted by HAMP View Post


It looks like English, but it doesn’t sound like it! Someone is getting lost in translations.

What's your opinion?
you never experineced to listen on the sub with in-build amp?

Which is better a sparates amp for (preout) or a sub with in-build amp? I think same...

it's funny, a sparates amp (preout) only speaker 5.0 or 7.0 channel but do not have sub (LFE).


When you buy a subwoofer. then buy a sparates amp (preout)? Why not more sub?

I asked you, what your opinion?
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Old 01-23-2009, 12:44 AM   #5
sokrman14 sokrman14 is offline
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And we are trying to figure what you are saying, because it is in english letters, but it doesnt make any sense. Where are you from?
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Old 01-23-2009, 12:45 AM   #6
Opips2 Opips2 is offline
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Quote:
Originally Posted by sokrman14 View Post
And we are trying to figure what you are saying, because it is in english letters, but it doesnt make any sense. Where are you from?
I'm canadian I born in Canada.



Last edited by Opips2; 01-23-2009 at 12:51 AM.
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Old 01-23-2009, 01:05 AM   #7
Opips2 Opips2 is offline
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never mind...I ordered second the sub.
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Old 01-23-2009, 01:09 AM   #8
Big Daddy Big Daddy is offline
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Using the built-in amplifier on a subwoofer versus using a separate external amplifier is essentially the same argument that we have had for many years between the advantages and disadvantages of active (powered) and passive (unpowered) subwoofers.

Advantages of Powered Subwoofers
  • Powered subwoofers are very convenient like receivers.
  • Since everything is already built-in, they are easy to hook up.
  • They can be less expensive just like receivers versus separate components.
Disadvantages of Powered Subwoofers
  • The built-in amps on most, by not all, subwoofers are of lower quality.
  • They are less convenient for subwoofer placement as you need to find a wall AC outlet and run a long subwoofer cable to it.
  • If the amp goes bad (sometimes they do), it is not as easy to replace them.
  • Manufacturers do not always sell parts for older subwoofers.
  • People have reported cases of fire or smoke coming out of their powered subwoofers.
  • Some powered subwoofers do not come on when the signal is low. There are many reports on this, including some on this forum.
With passive subwoofers, you have two options: You can use an external dedicated subwoofer amplifier or use a general purpose amplifier. Dedicated subwoofer amps have a built-in crossover network. For general purpose external amplifiers, you need to add an external powered crossover.

Advantages of Passive Subwoofers (External Amplifier)
  • External amplifiers are higher quality with better power supply and circuits than plate amplifiers.
  • They can produce much more power.
  • A multichannel amplifier can power several passive subwoofers in a home theater room.
  • Passive subwoofers are easier and less expensive to build.
  • The cabinet can be larger and you have much more flexibility in placing the woofer and ports.
  • If the amplifier malfunctions, it can easily be replaced with any external amplifier.
  • There is less danger for fire or smoke.
  • One of the biggest advantages of passive subwoofers is flexibility in their placement. You can leave the external subwoofer amplifier with the rest of your equipment and just run speaker wires to the subwoofer. You do not need a wall AC outlet for them.
  • Long speaker wires are generally cheaper than long subwoofer cables.
  • Speaker wires, particularly flat wires, are much easier to hide than subwoofer cables.
  • A general purpose amplifier can be used to power other speakers in two-channel music when the subwoofer is not used
Disadvantage of Passive Subs
  • More complicated to setup.
  • External amplifiers can be more expensive.

I have a 15" passive subwoofer that I built with a quality driver. It is 4 ohms. The external crossover network cost me $70. I power it with a general purpose stereo Carver amplifier that I bought a few years ago. I have the amplifier hooked up in single channel mode. It supplies up to 2,000 watts of mono power to the subwoofer. It can create earthquakes in Southern California. However, I have calibrated it with the rest of my system and set the volume to a reasonable level. The amplifier can easily kick the ass of any plate amplifier.

I also have two modified passive 12" Hsu subwoofers. They are 4 ohms and a monster Cinepro multi-channel amplifier drives both of them. Because they are passive, I have a great deal of flexibility in their placement.

I have another passive DIY 12" passive subwoofer. It uses a 300 watt external dedicated subwoofer amplifier with an external Hsu crossover network. It performs great.

Big Daddy loves passive subwoofers and external amplifiers. They rock.

I am currently building a 10" subwoofer. Please don’t tell my wife. I don’t like to sleep on the couch.

Opip, put your subwoofer in a duffel bag and bring it over to my house. We can have a competition. Don't forget to bring some Canadian beer.

Last edited by Big Daddy; 01-23-2009 at 07:15 AM.
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Old 01-23-2009, 01:30 AM   #9
Opips2 Opips2 is offline
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Thumbs up

I read...very interesting...Wow

Thanks Big Daddy.

Sure, I bring a Canadian Beer for you and me
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Old 01-23-2009, 01:58 AM   #10
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Quote:
Originally Posted by Opips2 View Post
never mind...I ordered second the sub.
ARE YOU SERIOUS? YOU WERE ASKING IF YOU SHOULD BUY ANOTHER SUB?

ALL OF THAT WAS TO ASK THAT QUESTION!!!!

Are you french or something?
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Old 01-23-2009, 04:56 AM   #11
primaz primaz is offline
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Default good post

Quote:
Originally Posted by Big Daddy View Post
Using the built-in amplifier on a subwoofer versus using a separate external amplifier is essentially the same argument that we have had for many years between the advantages and disadvantages of active (powered) and passive (unpowered) subwoofers.

Advantages of Powered Subwoofers
  • Powered subwoofers are very convenient like receivers.
  • Since everything is already built-in, they are easy to hook up.
  • They can be less expensive just like receivers versus separate components.
Disadvantages of Powered Subwoofers
  • The built-in amps on most, by not all, subwoofers are of lower quality.
  • They are less convenient for subwoofer placement as you need to find a wall AC outlet and run a long subwoofer cable to it.
  • If the amp goes bad (sometimes they do), it is not as easy to replace them.
  • Manufacturers do not always sell parts for older subwoofers.
  • People have reported cases of fire or smoke coming out of the powered subwoofer.
  • Some powered subwoofers do not come on when the signal is low. There are many reports on this, including some on this forum.
With passive subwoofers, you have two options: You can use an external dedicated subwoofer amplifier or use a general purpose amplifier. Dedicated subwoofer amps have a built-in crossover network. For general purpose external amplifiers, you need to add an external powered crossover.

Advantages of Passive Subwoofers (External Amplifier)
  • External amplifiers are higher quality with better power supply and circuits than plate amplifiers.
  • They can produce much more power.
  • A multichannel amplifier can power several passive subwoofers in a home theater room.
  • Passive subwoofers are easier and less expensive to build.
  • The cabinet can be larger and you have much more flexibility in placing the woofer and ports.
  • If the amplifier malfunctions, it can easily be replaced with any external amplifier.
  • There is less danger for fire or smoke.
  • One of the biggest advantages of passive subwoofers is flexibility in their placement. You can leave the external subwoofer amplifier with the rest of your equipment and just run speaker wires to the subwoofer. You do not need a wall AC outlet for them.
  • Long speaker wires are generally cheaper than long subwoofer cables.
  • Speaker wires, particularly flat wires, are much easier to hide than subwoofer cables.
  • A general purpose amplifier can be used to power other speakers in two-channel music when the subwoofer is not used
.
Disadvantage of Passive Subs
  • More complicated to setup.
  • External amplifiers can be more expensive.

I have a 15" passive subwoofer that I built with a quality driver. It is 4 ohms. The external crossover network cost me $70. I power it with a general purpose stereo Carver amplifier that I bought a few years ago. I have the amplifier hooked up in single channel mode. It supplies up to 2,000 watts of mono power to the subwoofer. It can create earthquakes in Southern California. However, I have calibrated it with the rest of my system and set the volume to a reasonable level. The amplifier can easily kick the ass of any plate amplifier.

I also have two modified passive 12" Hsu subwoofers. They are 4 ohms and a monster Cinepro multi-channel amplifier drives both of them. Because they are passive, I have a great deal of flexibility in their placement.

I have another passive DIY 12" passive subwoofer. It uses a 300 watt external dedicated subwoofer amplifier with an external Hsu crossover network. It performs great.

Big Daddy loves passive subwoofers and external amplifiers. They rock.

I am currently building a 10" subwoofer. Please don’t tell my wife. I don’t like to sleep on the couch.

Opip, put your subwoofer in a duffel bag and bring it over to my house. We can have a competition. Don't forget to bring some Canadian beer.
I think the poster could use some English grammar classes as it sounds like he wanted to know about two subs versus one; answer two is better than one to me

I think with brands like Outlaw Audio I would not do a passive sub system as it is more work and money. I used to build high end car audio in college and built a dual voice coil 15" sub, used a Precision Power dual point electronic crosssover and a NAD amp bridged mono to drive 440 watts into it. Yes it sounded nice and I custom built the box to be narrow and long to sit behind the sofa but for $600 dollars I picket up a down firing 12" Outlaw sub with 350 watt amp that is one heck of a sub without anywhere near the work I went through.
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Old 01-23-2009, 05:03 AM   #12
Opips2 Opips2 is offline
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Quote:
Originally Posted by primaz View Post
I think the poster could use some English grammar classes as it sounds like he wanted to know about two subs versus one; answer two is better than one to me

I think with brands like Outlaw Audio I would not do a passive sub system as it is more work and money. I used to build high end car audio in college and built a dual voice coil 15" sub, used a Precision Power dual point electronic crosssover and a NAD amp bridged mono to drive 440 watts into it. Yes it sounded nice and I custom built the box to be narrow and long to sit behind the sofa but for $600 dollars I picket up a down firing 12" Outlaw sub with 350 watt amp that is one heck of a sub without anywhere near the work I went through.
I mean two subs in build-amp versus 5 channel speakers with separate external amplifier for receiver (preout).

Should I buy another sub or buy a separate amplifier for receiver (preout)???
I misunderstands or you misunderstand, I not clear explain you.

Last edited by Opips2; 01-23-2009 at 05:07 AM.
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Old 01-23-2009, 05:17 AM   #13
Audiophile_At_Birth Audiophile_At_Birth is offline
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Ok I think I know what he is saying...well hopefully. He wan'ts to know if he should buy an external amp to drive two possible subs. I think he want's to use the pre-out on his reciever to this amp??? I'm lost Opips, and I'm always translating for you...SO YOU TELL ME!!!

OHH I got it.

Ok, you know how you can buy a seperate amp for your speakers. Emotiva, ect ect. It only has 7 channel output for your speakers and not for your LFE or subs in general. I think he wants to know if he should buy a seperate amp for his current sub and a second one he is going to order, or just use the pre-outs on his reciever...thus the need for either just a passive sub or a powered sub??? Am I close Opips?

P.S. I think you need to lay off the free translation sites...Or atleast find a better one. I think I got you my man...now you owe me some canadian bacon...

Last edited by Audiophile_At_Birth; 01-23-2009 at 05:21 AM.
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Old 01-23-2009, 05:36 AM   #14
Blu_Ray_Fan Blu_Ray_Fan is offline
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WOW! I have NO idea what this thread is about?!?!?!?!?
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Old 01-23-2009, 05:52 AM   #15
Opips2 Opips2 is offline
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Quote:
Originally Posted by Audiophile_At_Birth View Post
owe me some canadian bacon...
okay, i can't send it the shipping for you. If you want a some buy canadian bacon with symbol Canada Red Leaf logo on bacon in a groecy.


I'm sorry... only use my English language.
almost 100% your translation.

I mean, Which Should I buy a separate amplifier mulit-channel Class-D for receiver (preout) or another the subs in build amp? both??

for better advance sound.

give me opinion. Big Daddy explained.

Last edited by Opips2; 01-23-2009 at 06:03 AM.
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Old 01-23-2009, 06:14 AM   #16
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Quote:
Originally Posted by Opips2 View Post
give me opinion. Big Daddy explained.
Since I explained it, I get Canadian beer. No bacon for him.

Which city do you live in Canada?
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Old 01-23-2009, 06:25 AM   #17
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Quote:
Originally Posted by Big Daddy View Post
Since I explained it, I get Canadian beer. No bacon for him.

Which city do you live in Canada?
Damn. Big Daddy, I only up to grow up and be half the HT expert you are...I got a ways to go...
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Old 01-23-2009, 06:29 AM   #18
Opips2 Opips2 is offline
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Quote:
Originally Posted by Big Daddy View Post
Since I explained it, I get Canadian beer. No bacon for him.

Which city do you live in Canada?
NHL Canadian. Oilers. Wayne Gretzky is number #99 in Ex-Oilers....
Mark Massier....Grant Fuhr.
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Old 01-23-2009, 06:42 AM   #19
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"Worst-episode-EVER!"
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Old 01-23-2009, 06:43 AM   #20
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Quote:
Originally Posted by Audiophile_At_Birth View Post
Damn. Big Daddy, I only up to grow up and be half the HT expert you are...I got a ways to go...
Funniest-reply-ever!
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