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Question about adding an amp


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9 replies to this topic

#1 of 10 Leigh_M

Leigh_M

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Posted January 06 2006 - 11:22 AM

Ok, I have a stupid question. I'm guessing if I add an amp to power my front speakers this will reduce the load on my receiver. Is that correct? If I never push my system to my receiver limits will I see any benefit adding an amp?

On a side note, what do you think about the Onkyo M-282 amp? Thanks!

#2 of 10 brendy

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Posted January 07 2006 - 12:06 AM

No question is stupid when you want to learn.Yes,that is correct.Depends a lot on the speakers (ohm/sensitivity rating) and how loud you listen.The M-282 is a good amp.

#3 of 10 Westly T

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Posted January 09 2006 - 08:11 AM

Many times a better, more powerful amp WILL sound better even at low levels, far below the limits of the amp. This is especially true for difficult loads.
- Wes

My old Home Theater

#4 of 10 Leigh_M

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Posted January 15 2006 - 09:01 AM

Thanks for the info. Somehow I missed the responses earlier.

Will the amp change the sound of the speakers like a change in receiver brand can? BTW, I'm using a yamaha RX-V630 paired with Boston CR speakers.

#5 of 10 John S

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Posted January 16 2006 - 02:37 AM

To a much lesser extent, the amp may or may not change the sound.

#6 of 10 JackS

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Posted January 16 2006 - 08:31 AM

Adding an amp more than anything, will give you peace of mind and an increase in type of speakers you may want to add later.
Max out the performance and safty of your receiver and at the same time improve(probably) the performance of your present speakers.
Weather you notice a change or not, you will deffinatly have the feeling that all is well with your HT.
I think everyone should own at least one 2-channel amp. It's the only piece of equipment you will ever buy that will not be outdated and can easily last a lifetime.
IMO- add an amp.

#7 of 10 Kevin G.

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Posted January 16 2006 - 12:21 PM

How can you add an amp to an existing 5.1 or 6.1 setup?
If the signal is leaving your existing receiver, aren't you powering it and sending a POWERED signal to an amp? Then amplifying it again?
Won't this cause an adverse effect?
Would you want to power your mains only? Sorry for the Q's guys... but I'm trying to understand...I know people do this, but am curious how.
If bread always lands buttered side down...
And a cat always lands on it's feet...
What happens when you strap a buttered piece of bread to a cat's back?????

#8 of 10 Carl Johnson

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Posted January 16 2006 - 12:48 PM

Quote:
How can you add an amp to an existing 5.1 or 6.1 setup?


The receiver most likely has an unamplified RCA output jack for each channel that can be connected to a separate amp.

#9 of 10 Doug_

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Posted January 17 2006 - 10:54 AM

I would also advise someone to start at 200W per channel @ 8 Ohms to realize the true benefits of an external amp. The more headroom you have the better it generally sounds.
Doug

#10 of 10 mackie

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Posted January 17 2006 - 11:15 AM

Quote:
I would also advise someone to start at 200W per channel @ 8 Ohms to realize the true benefits of an external amp. The more headroom you have the better it generally sounds.


All things being equal it's better to have more power than you need, but a 200 watt amp will only play 3 dB louder than a 100 watt amp.

As has been listed above a few things to consider when adding an amp:

Speaker Sensitivity
Speaker Efficiency - Ohm
Do you use a powered sub and what is the cross-over point?
How loud do you listen
How big is your room
Room acoustics

If someone is using a 8 ohm speaker with a 90 dB sensitivity with a powered sub crossed over at 80 Hz in an average sized room, I'd say a 200 watt amp doesn't add much if anything over a 100 watt amp.

However, if you use full range speakers that can truly play down to 20 hz has a sensitivity of 85 dB and is a 4 ohm speaker, I'd recommend a 200 watt or more amp.

It really is all relative, but amps do last a long, long time and all things being equal it's better to have too much power than not enough. You just need to make sure the extra costs of the extra watts is worth any improvement.





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