onkyo tx4500

kefranklin
kefranklin Posts: 141
edited September 2010 in 2 Channel Audio
I have an old oinker tx4500 that has been a great little receiver. It has pushing my monitor 10bs for a while and has done well despite its lack of power. I just got another pair of 10bs and the plan was to use the preamp and power both pairs with another amp producing 150-200 watts continuous power per channel My problem is that last night i hooked up one pair to the A speakers and the other one to the B output. Sound was great on phono and fm(one day ill get a cd player). After about four hours of play, the sound cut down to a trickle. All four are still being powered, but barely. During this time the volume was never past 11 o'clock and the amp developed no more heat than it did just driving the first pair. With the one pair it would drive clean until about two o'clock, but I never pushed it any harder and it never cut out on me. I tried it this morning before work and it has the same problem on fm or phono. No distortion, but 1/20th the power. All lights on receiver still work. I don't have any experience working on amps, but i do have some skills with my hands. Does anyone have any suggestions on what it may be? Any help would be appreciated, as i love the receiver and was only going to use its power supply for another two weeks. Hopefully the preamp will still work no matter what. Thank you for any help you may have, as i am a lost pilgrim without my guiding light of musical bliss.
Post edited by kefranklin on
· Share on FacebookShare on Twitter

Comments

  • kefranklin
    kefranklin Posts: 141
    edited September 2010
    The tx4500 is back online. Just a few loose wires and some cleaning. Glad i got it back going by my birthday on saturday.
    · Share on FacebookShare on Twitter
  • organ
    organ Posts: 4,969
    edited September 2010
    Good to hear you got it up and running again. Just don't crank it too high while you have both pairs running off the same amp. You're cutting your impedance by half.

    Happy belated b-day!
    · Share on FacebookShare on Twitter
  • kefranklin
    kefranklin Posts: 141
    edited September 2010
    Thanks organ. The birthday is tomorrow though. Besides the preamp, one reason i like the 4500 so much is that it has a, b, and c speakers. I just hope it will push my 5jrs well for my back patio after i get an external amp for the monitor 10s.
    · Share on FacebookShare on Twitter
  • organ
    organ Posts: 4,969
    edited September 2010
    My bad, here's a happy b-day in advance:).

    I didn't know they made them with a third set of outputs. Wow. I wonder if they all connect to a single stereo amp, or does the receiver have multiple amp sections?
    · Share on FacebookShare on Twitter
  • TrashyTrucker
    TrashyTrucker Posts: 225
    edited September 2010
    kefranklin wrote: »
    ... The birthday is tomorrow...

    Happy birthday, hope your day goes well!

    regards,
    Matt
    Integra DTR 50.2 used as a preamp
    Rotel RCD 1520 cdp
    AudioQuest Jaguar 72v dbs ic's
    AudioQuest type 8 wire
    biamped to:
    2-Hafler 9500 trans nova's
    AudioQuest NRG-3 power cable's
    dedicated AC line for
    Tesla Plex 20a duplex receptacle
    Panamax Max 7500 pro surge/line conditioner
    SDA SRS 3.1 TL's modded...
    spikes, rdo's, rings, dynamat, sonicaps, mills & aeon
    Panasonic Viera G20 50" plasma


    ...SDA's are just like candy for your ears...
    · Share on FacebookShare on Twitter
  • kefranklin
    kefranklin Posts: 141
    edited September 2010
    Gonna see how the onkyo works as a preamp. Ive got an audiosource amp three on the way. I know they are cheap, but i have read good things about them. The birthday was wild. Smoked boston butts and music go well together. Also no one damaged my equipment!!!
    · Share on FacebookShare on Twitter
  • organ
    organ Posts: 4,969
    edited September 2010
    Good to hear. I haven't heard AS gear but they have a very good rep and value for the $. Let us know how it sounds.
    · Share on FacebookShare on Twitter
  • George Grand
    George Grand Posts: 12,258
    edited September 2010
    kefranklin wrote: »
    I have an old oinker tx4500 that has been a great little receiver.

    About the last thing I would call an Onk TX-4500 is a "little" receiver. I have one of those also, and was considering it for my garage rig, but it takes up too much workbench space. For 55wpc, it's a moose. Onkyo didn't know the word "little" until just a few years back. I have a Onk TX-7000 if you want to see "little". And a Yamaha CR-1020.
    · Share on FacebookShare on Twitter
  • nadams
    nadams Posts: 5,877
    edited September 2010
    George Grand wrote: »
    About the last thing I would call an Onk TX-4500 is a "little" receiver. I have one of those also, and was considering it for my garage rig, but it takes up too much workbench space. For 55wpc, it's a moose. Onkyo didn't know the word "little" until just a few years back. I have a Onk TX-7000 if you want to see "little". And a Yamaha CR-1020.

    I so want that TX-7000, but I just can't swing it with my other purchase and all the other costs with PF 2010. It looks like a real beast.
    Ludicrous gibs!
    · Share on FacebookShare on Twitter
  • kefranklin
    kefranklin Posts: 141
    edited September 2010
    Yes, the "little" remark was kinda tongue in cheek. However, those hungry monitors just crave power and they work the onkyo pretty hard. I have heard some good things about the preamp in this series, so I'm anxious to try it out. I will let everyone know how my ultra low budget system sounds when I get it up and running. That receiver can really make my 5jrs sing though. I can get almost as much volume and clarity out of those as i do with my 10bs. This is also a phono only setup, so I'm not working with a great signal. Should I get a separate phono preamp?
    · Share on FacebookShare on Twitter