When is an AMP necessary?

Discussion in 'AV Receivers' started by Michael Cawcutt, Jul 31, 2004.

  1. Michael Cawcutt

    Jan 14, 2004
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    Hey guys ::

    Quick question from a moderate but learning HT enthusiast [​IMG] Currently I have -

    Onkyo 601 receiver
    Optimus 12" df'ring subwoofer
    Polk Audio RM6005 Speaker System
    Polk Audio CS2BK Center Speaker

    I just got my receiver last winter, as I have been totally blown away from my previous receiver of which only had Pro Logic II [​IMG] Anyway my budget is small, and I've been living in apartments, as I am just finishing school, just got married and anticipate the day I( we [​IMG] ) will have a home where I can budget and buy HT equipment to my hearts content.

    Anyway on with my question, I know my stuff is too "small" to need an amp, or is it ? When do you start getting into equipment that an amp is needed. This being receiver and speaker based.

    Tonight I was reading a review on the Rotel RMB-1095, because I was curious in amps. Not only do amps provide needed amplified juice, but also create a crisp, and more detailed sound. But when are these monsters needed ?

    Thanks guys

  2. JohnSmith

    JohnSmith Supporting Actor

    Apr 8, 2003
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    Your question should be "when is high output and high current ability amp necessary" the answer would if you meet one or more of the following points.

    Your speakers have a low sensitivity
    Your speakers have a low impedance
    You have a large room
    You listen to it loud
    Your current amp cannot drive your existing speakers adequately, you notice at your existing level it sounds harsh and compressed, the amp gets very hot then shuts off.

    The 1095 is a beast of a amp, but is quite a bit more expensive over the 1075, and in most cases the extra expense is not needed. IMO if you're looking at £2000 5ch poweramps there are better amps out there for similar money; you're looking into fairly upper end amps. You will not need a 1095 for your speaker system, a 1075 would be more than plenty (if fact the 60w Rotel's will probably do)

    Be aware your amp needs Pre-outs for the 5 channels for you to add a poweramp. I know some of the lower end Onkyo's lack them (only on 6xx range they pop up?)
  3. kevin tate

    kevin tate Stunt Coordinator

    Jul 2, 2003
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    I don't believe the 601 has pre-outs.
  4. ChadLB

    ChadLB Screenwriter

    May 5, 2002
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    No it doesn't have to jump up to the 700 or 800 models...
    Why does Onkyo lack that when (almost) all other companies have entry level receivers with them...
    Pioneer 914
    Yamaha HTR 5760
    Denon 2105

    all can be found for under $500.....
  5. JackS

    JackS Supporting Actor

    Jan 17, 2002
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    I Like the use of an external amp with a receiver if only for the piece of mind that this addition brings. Sonics will automatically improve but it doesn't take an expensive high powered multi-channel for most applications. An inexpensive two channel (used) and any name brand will do. Save some money now and try this suggestion. The amp you buy can always be used in the future for surrounds if you decide to go with seperates. My opinion and others may be just as valid and differ.
  6. John Garcia

    John Garcia Executive Producer

    Jun 24, 1999
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    Real Name:
    Good amplification is always a benefit, but generally speaking, small satellites are not in need of stellar amplification because they are already limited in what they are capable of. In other words, pumping a lot of clean power into satellites is going to give you more clarity, but will also expose their limitations. To me, small satellites are specifically tailored to low power applications.

    If your "old" receiver had PLII, then it couldn't have been that old, as PLII has only been around for about 2yrs and there are no receivers that have PLII only.

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