Hafler PRO 2400 RTA 15's,3.1TL's

brgman
brgman Posts: 2,859
edited October 2010 in Vintage Speakers
Anyone familiar with this amp think it is sufficient for driving the 3.1's or 15's?
It has always been decent on the SDA2's i have but what bugs me is that i do not know where i am at on the wattage scale when i use it.
In other words i don't want to hurt these speakers. I dont plan to try and blow the roof off but i want to have some room to move.Also don't know what i'm getting out of this amp as far as clean power (if any)
I'm still abit confused as to whether these are 8 ohm or 6 ohm speaks.
Any help is greatly appreciated.:o
Thanks
Mike
Main Rig-Realistic AM/FM Record player 8 track boasting 4 WPC

Backup Rig-2 CH-Rogue Audio Zeus w/Factory Special Dark Mods,Joule-Electra 300ME Platinum Preamp,OPPO-105 w/Modwright Tube Mod, Auralic Aries G2.1,Polk 2.3TL,3.1TL's,Dreadnought,RTA-15TL's,1C's All Fully Modded,2xRTA-12c's ,Benchmark DAC3 HGC,Synology NAS,VPI Scout w/Dynavector DV-20XH and Rogue Audio Ares Phono Preamp,Sony PCM-R500 DAT,HHB-850 Pro CDR,Tascam CC-222SLMKII Cassette/CDR,MIT S3.3 Shotgun Cables,Shunyata Hyra-8,Shunyata and Triode Labs Power Cords

I’M OFFENDED!!!!
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Comments

  • stubby
    stubby Posts: 723
    edited October 2010
    Not familiar with that amp. By the numbers, it looks OK as far as power nearly doubling when going from an 8 ohm to a 4 ohm load. The 3.1 or the 15TL can handle a bunch of power, and the more you give it, the better they will sound.

    I didn't see any clipping indicators on the amp, so you will need to take it easy.....if you hear the drivers bottoming out, TURN IT DOWN.

    Not sure about the 15s but the 3.1TLs are much closer to a 4 ohm speaker than the "compatible with 8 ohm outputs" claim that Polk states.

    stubby
    SRS 3.1TL
    Harman Kardon Citation 5.1
    Anthem AVM2



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  • phocion
    phocion Posts: 157
    edited October 2010
    Both are listed as 8 ohm in the literature.

    Recommended power is 30-250 wpc for the 15's ( http://www.polksda.com/pdfs/RTA_TL_Sales_Brochure.pdf )

    50-500 wpc for the 3.1TL ( http://www.polksda.com/pdfs/SRS3.1TLBrochure.pdf )

    So, you are comfortably half of that and need a bigger amp ;)
    The secret for harvesting from existence the greatest fruitfulness and greatest enjoyment is to live dangerously. - Nietzche
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  • engtaz
    engtaz Posts: 7,663
    edited October 2010
    SRS3.1TL

    Floor-standing home stereo loudspeakers.
    Listen carefully...everything you hear is true.


    48" H x 15-3/4" W x 13-3/8" D
    ( 121.92cm H x 40.01cm W x 33.97cm D )

    black


    MSRP:
    999.95 each (US)¹

    Overview Specifications Customer Reviews

    Driver Complement
    Subwoofer 1 - 12" Diameter (30.48cm)
    sub bass radiator
    Midrange 5 - 6-1/2" Diameter (16.51cm)
    drivers
    Tweeter 1 - 1" Diameter (2.54cm)
    SL3000 trilaminate dome tweeter

    Electrical
    Overall Frequency Response 15Hz - 26kHz
    Lower -3dB Limit 32Hz
    Upper -3dB Limit 25kHz
    Nominal Impedance 8 ohms
    Recommended Amplifier Power 50-500 w/channel
    Efficiency 90 dB

    Dimensions
    Cabinet Size 48" H x 15-3/4" W x 13-3/8" D
    (121.92cm H x 40.01cm W x 33.97cm D)

    Shipping/Other
    Total Shipping Weight 101.00 lbs. (45.81kgs)
    engtaz

    I love how music can brighten up a bad day.
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  • brgman
    brgman Posts: 2,859
    edited October 2010
    It is that "nominal impedence" thing that had me wondering.I'm looking for that bigger amp but trying to be patient til the right deal comes along.Thanks all.
    Main Rig-Realistic AM/FM Record player 8 track boasting 4 WPC

    Backup Rig-2 CH-Rogue Audio Zeus w/Factory Special Dark Mods,Joule-Electra 300ME Platinum Preamp,OPPO-105 w/Modwright Tube Mod, Auralic Aries G2.1,Polk 2.3TL,3.1TL's,Dreadnought,RTA-15TL's,1C's All Fully Modded,2xRTA-12c's ,Benchmark DAC3 HGC,Synology NAS,VPI Scout w/Dynavector DV-20XH and Rogue Audio Ares Phono Preamp,Sony PCM-R500 DAT,HHB-850 Pro CDR,Tascam CC-222SLMKII Cassette/CDR,MIT S3.3 Shotgun Cables,Shunyata Hyra-8,Shunyata and Triode Labs Power Cords

    I’M OFFENDED!!!!
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  • Joe08867
    Joe08867 Posts: 3,919
    edited October 2010
    Considering that the Hafler is a Pro-Amp and not necessarily a Hi-Fi Amp and honestly underrated power (120W per side Nominal) wise for 3.1's or 15's I would consider something else to run them.

    I will say I have heard a Hafler 2400 in studio when working on my old bands CD and it did sound quite nice although we tried an Alesis that was weaker 50w per ch and that sounded better to me personally. Also the listeneing done was nearfield, in almost perfect listening position and in a room designed for just that purpose.

    I know my SDA2's sing with the Rotel RB-1050 only 70w per ch used for critical listening at low volume or my Adcom GFA-555 used for parties work quite nice. Both can be found used for a lot less than a new amp and will really help those speakers shine.
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