Best iTunes Music Deals


Best iTunes Music Deals, See All the Deals »
Top deals | New deals  
 All countries United States United Kingdom Canada Germany France Spain Italy Australia Netherlands Japan Mexico
Chicago: The Very Best of Chicago: Only the Beginning (iTunes)
$6.99
 
Thomas Newman: In the Bedroom (iTunes)
$9.99
 
Ozzy Osbourne: The Ozzman Cometh (iTunes)
$6.99
 
Journey: Greatest Hits (iTunes)
$6.99
 
Green Day: Greatest Hits: God's Favorite Band (iTunes)
$6.99
 
J. Cole: KOD (iTunes)
$6.99
 
Spiritualized: And Nothing Hurt (iTunes)
$4.99
 
Michelle Williams: Journey To Freedom (iTunes)
$4.99
 
Aretha Franklin: Live At Fillmore West (iTunes)
$4.99
 
Aretha Franklin: Young, Gifted and Black (iTunes)
$4.99
 
Brian Eno: Taking Tiger Mountain By Strategy (iTunes)
$7.99
 
Salt-N-Pepa: Very Necessary (iTunes)
$4.99
 
What's your next favorite movie?
Join our movie community to find out


Image from: Life of Pi (2012)
Old 02-29-2008, 04:39 AM   #1
BStecke BStecke is offline
Blu-ray Knight
 
BStecke's Avatar
 
Jun 2007
116
498
1
1
6
Default Amplifiers

The next logical step in my home theater would be to add an amplifier, which I really know nothing about, as far as the home theater environment goes. Car audio, yes.

In looking at some of the major brands (Yamaha, Denon, Pioneer) I'm seeing that most amplifiers are mono or two channel. In my mind, I would need a 5 channel amp, one channel each for F, L, Center, and Surround. I really don't know why they even make a mono amp for a home theater application, unless it would be for an unamplified subwoofer. Maybe I'm incorrect, which, from what I'm seeing in amp selection, I would believe.

Anyway . . . school me on amplifiers! I'm familiar with RMS, Dynamic, etc, etc, so I don't need much info on that. I'm sure there are brands for amps I've never even heard of, which I'm hoping to gain more familiarity with as well.
  Reply With Quote
Old 02-29-2008, 04:50 AM   #2
Marcusarilius Marcusarilius is offline
Blu-ray Ninja
 
Marcusarilius's Avatar
 
Aug 2007
Seattle, WA.
52
1
Default

Quote:
Originally Posted by BStecke View Post
The next logical step in my home theater would be to add an amplifier, which I really know nothing about, as far as the home theater environment goes. Car audio, yes.

In looking at some of the major brands (Yamaha, Denon, Pioneer) I'm seeing that most amplifiers are mono or two channel. In my mind, I would need a 5 channel amp, one channel each for F, L, Center, and Surround. I really don't know why they even make a mono amp for a home theater application, unless it would be for an unamplified subwoofer. Maybe I'm incorrect, which, from what I'm seeing in amp selection, I would believe.

Anyway . . . school me on amplifiers! I'm familiar with RMS, Dynamic, etc, etc, so I don't need much info on that. I'm sure there are brands for amps I've never even heard of, which I'm hoping to gain more familiarity with as well.
There should still be good mono block amps out there. 500 WPC. Check the higher end websites.
  Reply With Quote
Old 02-29-2008, 05:05 AM   #3
JohnGalt JohnGalt is offline
Senior Member
 
JohnGalt's Avatar
 
Sep 2007
4
Default

I have no personal experience with them but lots of folks seem to like Emotiva amps and they're relatively affordable.
  Reply With Quote
Old 02-29-2008, 05:23 AM   #4
guitarist155 guitarist155 is offline
Special Member
 
guitarist155's Avatar
 
Jan 2008
nashville
45
11
134
3
2
1
Default

Quote:
Originally Posted by BStecke View Post
I really don't know why they even make a mono amp for a home theater application, unless it would be for an unamplified subwoofer. Maybe I'm incorrect, which, from what I'm seeing in amp selection, I would believe.
mono amps are for people who want to use one amp for each channel, by keeping the channels separate with different amps it helps to prevent cross talk from one channel to another and for more overall isolation. there are also other benefits to having mono amps like if one channel goes bad you only have to replace that channel. mono amps will also usually be able to provide more power per speaker than a 5.1/7.1 amp
  Reply With Quote
Old 02-29-2008, 05:38 AM   #5
ManUtd ManUtd is offline
Blu-ray Count
 
ManUtd's Avatar
 
Feb 2008
In my HT
1
15
829
5
5
Default

If you are okay with mail order companies check out Outlaw 7500, if not, my favorite relatively inexpensive brands are Rotel and B&K.
  Reply With Quote
Old 02-29-2008, 05:41 AM   #6
Marcusarilius Marcusarilius is offline
Blu-ray Ninja
 
Marcusarilius's Avatar
 
Aug 2007
Seattle, WA.
52
1
Default

Quote:
Originally Posted by Art Vandelay View Post
If you are okay with mail order companies check out Outlaw 7500, if not, my favorite relatively inexpensive brands are Rotel and B&K.
B&Ks are excellent.
  Reply With Quote
Old 02-29-2008, 06:20 AM   #7
Todd Todd is offline
Member
 
Todd's Avatar
 
Aug 2007
ca.
Default

Quote:
Originally Posted by BStecke View Post
The next logical step in my home theater would be to add an amplifier, which I really know nothing about, as far as the home theater environment goes. Car audio, yes.

In looking at some of the major brands (Yamaha, Denon, Pioneer) I'm seeing that most amplifiers are mono or two channel. In my mind, I would need a 5 channel amp, one channel each for F, L, Center, and Surround. I really don't know why they even make a mono amp for a home theater application, unless it would be for an unamplified subwoofer. Maybe I'm incorrect, which, from what I'm seeing in amp selection, I would believe.

Anyway . . . school me on amplifiers! I'm familiar with RMS, Dynamic, etc, etc, so I don't need much info on that. I'm sure there are brands for amps I've never even heard of, which I'm hoping to gain more familiarity with as well.
Mono block amps typically yield better power output, better dynamic range. less distortion, and no cross talk between channels. Great speakers that need high power. Mono blocks are hands down the best quality but are very high price! So what is your budget in dollars, if you want a really great 5 channel amp look at ADA, CINEPRO, or KRELL these companies make Mono block, and multi channel amps. If your budget isn't up to this level you might seach on ebay for used amps, SAE was american made when that was actually a good thing. I use an SAE model A501 to drive my boston acoustics G5 subwoofer in my home theater this amp outputs 250wpc@8ohm and is very low distortion. want more power get a SAE model A1001 500wpc@8ohm also will drive loads down to 2ohms.
If that doesn't help you could just get a Denon receiver like the avr 5308 150wpc@8ohms. good luck.
  Reply With Quote
Old 02-29-2008, 06:36 AM   #8
mugen302005 mugen302005 is offline
Active Member
 
mugen302005's Avatar
 
Jul 2007
21
10
Default

I know that there are knowledgeable people here in the forum, so this post is just perfect I didn't think It 'd be a good idea to open another that noene reads.

Well my question is specific, can the denon avr-1508 with its hdmi compatbility be used with my ps3 to hear the long awaited pcm uncompresed audios of all my blurays? If it is not possible, then any other denon model that does it? or ist tit that the only choice for us ps3 users is the onkyo 605?

Thanks and please respond.
  Reply With Quote
Old 02-29-2008, 03:47 PM   #9
BStecke BStecke is offline
Blu-ray Knight
 
BStecke's Avatar
 
Jun 2007
116
498
1
1
6
Default

Quote:
Originally Posted by Art Vandelay View Post
If you are okay with mail order companies check out Outlaw 7500, if not, my favorite relatively inexpensive brands are Rotel and B&K.
I was looking at that Outlaw, as a matter of fact, but what the HELL type of inputs are those!?
  Reply With Quote
Old 03-01-2008, 02:25 AM   #10
MatrixS2000 MatrixS2000 is offline
Power Member
 
MatrixS2000's Avatar
 
Mar 2007
Toronto, Canada
45
299
6
Default

Those are balanced inputs. Most people are familar with unbalanced RCA connections where the postive signal is on the centre post and the negative is on the sleeve. Balanced connectors have 3 connections. A +, - and ground. It's advantage is that it can carry a higher level signal and that an amp with balanced input should not have any hum.

Amplifiers are a pretty big discussion and all that most people look at is how much power the amp can make.

Here is a good page defining what all the specs mean.

Post back if you have any specific questions.
  Reply With Quote
Old 03-01-2008, 02:52 AM   #11
RUR RUR is offline
Blu-ray Guru
 
RUR's Avatar
 
Feb 2007
Abiit, excessit, evasit, erupit
143
1
Default

Quote:
Originally Posted by BStecke View Post
I was looking at that Outlaw, as a matter of fact, but what the HELL type of inputs are those!?
What model(s) Klipsch' are you running?
  Reply With Quote
Old 03-01-2008, 03:15 AM   #12
richteer richteer is offline
Blu-ray Samurai
 
richteer's Avatar
 
Jun 2007
Kelowna, BC
1
Send a message via AIM to richteer
Default

Quote:
Originally Posted by MatrixS2000 View Post
Those are balanced inputs. Most people are familar with unbalanced RCA connections where the postive signal is on the centre post and the negative is on the sleeve. Balanced connectors have 3 connections. A +, - and ground. It's advantage is that it can carry a higher level signal and that an amp with balanced input should not have any hum.
Close, but not quite accurate. Single-ended (normal) connections have two signals: +ive and ground. These type of connection can be susceptible to RFI (radio frequency interferance); the longer the cable and/or more electrically noisy the environment, the worse the problem will potentially be.

In a balanced connection, the audio signal mirrored, the original signal using the + connection and its mirror using the - side (the ground is used in the same way it is in single-ended connections). Each of the signal cables is susceptible to RFI in the same manner as single-ended connections, but because the two halves of the signal are 180 degrees out of phase with each other, the induced noise sums to zero. (This is a bit hard to explain with drawing a picture!)

The signal in a balanced connection isn't necessarily a higher level one than that found in single-ended connetions, I guess hum might still be an issue.
  Reply With Quote
Old 03-01-2008, 03:58 AM   #13
MatrixS2000 MatrixS2000 is offline
Power Member
 
MatrixS2000's Avatar
 
Mar 2007
Toronto, Canada
45
299
6
Default

Quote:
Originally Posted by richteer View Post
Close, but not quite accurate. Single-ended (normal) connections have two signals: +ive and ground. These type of connection can be susceptible to RFI (radio frequency interferance); the longer the cable and/or more electrically noisy the environment, the worse the problem will potentially be.

In a balanced connection, the audio signal mirrored, the original signal using the + connection and its mirror using the - side (the ground is used in the same way it is in single-ended connections). Each of the signal cables is susceptible to RFI in the same manner as single-ended connections, but because the two halves of the signal are 180 degrees out of phase with each other, the induced noise sums to zero. (This is a bit hard to explain with drawing a picture!)

The signal in a balanced connection isn't necessarily a higher level one than that found in single-ended connetions, I guess hum might still be an issue.
How is this any different that what I posted (other than you adding points on interference which wasn't in the discussion)?

And where was I inaccurate?
  Reply With Quote
Old 03-01-2008, 04:34 AM   #14
TENSE TENSE is offline
Senior Member
 
TENSE's Avatar
 
Mar 2008
Los Ageles, Ca
10
Default

do i need an amplifier if my speakers out put more watts than my receiver.?
for example my receiver out puts 660 watts and my speakers need 890 watts
is that ok?
  Reply With Quote
Old 03-01-2008, 04:52 AM   #15
guitarist155 guitarist155 is offline
Special Member
 
guitarist155's Avatar
 
Jan 2008
nashville
45
11
134
3
2
1
Default

those are xlr inputs they are used widely in the pro audio industry, both of the above are very good descriptions. however i would read this for a very in depth on what xlr is and why to use xlr http://www.nullmodem.com/Audio.htm#BalancedLines

however all of the outlaw amps have rca also so you do not have to use xlr if your preamp doesn't have them
  Reply With Quote
Old 03-01-2008, 05:03 AM   #16
jdc115 jdc115 is offline
Special Member
 
jdc115's Avatar
 
Jul 2007
Singapore
7
87
Default

Quote:
Originally Posted by BStecke View Post
The next logical step in my home theater would be to add an amplifier, which I really know nothing about, as far as the home theater environment goes. Car audio, yes.

In looking at some of the major brands (Yamaha, Denon, Pioneer) I'm seeing that most amplifiers are mono or two channel. In my mind, I would need a 5 channel amp, one channel each for F, L, Center, and Surround. I really don't know why they even make a mono amp for a home theater application, unless it would be for an unamplified subwoofer. Maybe I'm incorrect, which, from what I'm seeing in amp selection, I would believe.

Anyway . . . school me on amplifiers! I'm familiar with RMS, Dynamic, etc, etc, so I don't need much info on that. I'm sure there are brands for amps I've never even heard of, which I'm hoping to gain more familiarity with as well.
Unless you are looking to go very high end, most of the mid end companies make 5 and 7 channel amps:

Rotel
NAD
Adcom
B&K
Parasound
Outlaw

Maybe the B&K and Parasound a bit more expensive but all offer quite a bit of power for a "resonable" price. They will all be quite a bit more then the typical HT receiver though and then you still need a source to feed them.
  Reply With Quote
Old 03-01-2008, 11:39 AM   #17
MatrixS2000 MatrixS2000 is offline
Power Member
 
MatrixS2000's Avatar
 
Mar 2007
Toronto, Canada
45
299
6
Default

Quote:
Originally Posted by guitarist155 View Post
That is a very good description of how balanced inputs work. The differentiating circuit is what eliminates things like hum and RFI.
  Reply With Quote
Old 03-01-2008, 12:02 PM   #18
MatrixS2000 MatrixS2000 is offline
Power Member
 
MatrixS2000's Avatar
 
Mar 2007
Toronto, Canada
45
299
6
Default

Quote:
Originally Posted by TENSE View Post
do i need an amplifier if my speakers out put more watts than my receiver.?
for example my receiver out puts 660 watts and my speakers need 890 watts
is that ok?
Ok couple of things:

1 - speakers do not output anything other than sound. So when you read a wattage spec on speakers, they relate to input wattage (the maximum power they can handle) not output.

2 - To answer your question - no you don't need an amplifier if your receiver puts out less power than your speaker maximum. However, if you run your receiver hard (as in close to maximum volume), it could damage your speakers as the amplifier section in the receiver is most likely be clipping. Clipping is what leads to speaker damage.

Clipping is distortion of the amplified signal when you ask your amplifier to amplify a signal beyond what the power supply can handle. Imagine a nice clean sine wave, when an amplifier is pushed to clipping, the top and bottom of that sine wave are clipped off. The signal is clipped because the power supply section of the amplifier (or receiver) can no longer provide enough power to the amplifier section to cleanly amplify the signal.

That clipped off portion basically represents a dc current (like a battery) to the speaker and creates heat in the voice coil of the speaker. Too much clipping and the voice coil overheats and you damage your speaker.

A good rule of thumb to stick by to somewhat protect yourself from clipping is to never exceed 70% on your volume control.
  Reply With Quote
Old 03-01-2008, 12:09 PM   #19
btf1980 btf1980 is offline
Special Member
 
btf1980's Avatar
 
Jan 2007
NYC
97
14
Default

I'm very familiar with Classe and Rotel. I have no idea what your budget is, but Classe might be out of reach. In any event, I can wholeheartedly recommend Rotel. Either their RMB-1075 or RMB-1095 is worth their weight in gold. Fantastic amps. I use the 1075 myself. Constant, steady power. Another thing that puts Rotel above the rest is build quality. Many others have cheap looking and feeling amps. Well the Rotel is built like a tank, and weighs like one as well.

Rotel RMB-1075
http://www.rotel.com/NA/products/Pro...tails.htm?Id=3

Rotel RMB-1095
http://www.rotel.com/NA/products/Pro...tails.htm?Id=2

My Rotel RMB-1075
  Reply With Quote
Old 03-01-2008, 01:20 PM   #20
BStecke BStecke is offline
Blu-ray Knight
 
BStecke's Avatar
 
Jun 2007
116
498
1
1
6
Default

Quote:
Originally Posted by RUR View Post
What model(s) Klipsch' are you running?
I'll have all Reference series in a week or so: RC62 center, RF82 fronts, RB61 rears, RW12d sub.


My Pioneer receiver does not have the balanced outputs, at least that I am aware of. I'm assuming both ends of the connector look the same. Is this mainly a feature of standalone processors/preamps, or do "all-in-one" AVR's ever include these?
  Reply With Quote
Reply
Go Back   Blu-ray Forum > Audio > Audio Theory and Discussion

Similar Threads
thread Forum Thread Starter Replies Last Post
A Guide to Amplifiers Receivers Big Daddy 55 01-21-2013 06:09 PM
The best amplifiers Receivers KingRadicalPhil 37 12-30-2010 03:00 PM
Opinions On a Few Amplifiers Please Receivers Erman_94 23 03-23-2010 02:14 AM
Understanding Amplifiers Pre/Pro, Amplifiers and Separate Systems Big Daddy 0 11-22-2009 02:00 PM
Need some help on amplifiers... Home Theater General Discussion Zaphod 1 08-02-2007 07:03 AM


Thread Tools
Display Modes

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 09:03 AM.