GuyIsDamGood Posted April 18, 2023 Posted April 18, 2023 Hello I was watching a video on the Klipsch RF-7 iii Tower Speakers. I believe someone said that the speakers are really 4-ohms. Anyone know if that is basically true? Thank you Quote
MicroMara Posted April 18, 2023 Posted April 18, 2023 34 minutes ago, GuyIsDamGood said: Hello I was watching a video on the Klipsch RF-7 iii Tower Speakers. I believe someone said that the speakers are really 4-ohms. Anyone know if that is basically true? Thank you No, certenly not , they´re 8 Ohm Speaker Quote
babadono Posted April 18, 2023 Posted April 18, 2023 they have impedance dips way below 8 ohms, they need an amp with Oomph....IMHO. Are they 8 ohms nominal?.......umm...OK 2 Quote
MicroMara Posted April 18, 2023 Posted April 18, 2023 2 minutes ago, babadono said: they have impedance dips way below 8 ohms, they need an amp with Oomph....IMHO. Are they 8 ohms nominal?.......umm...OK @GuyIsDamGood owns a Rotel RB-1582 MK II with 200W / 8Ohm per channel , that fits , and of course there ´re impedance dips like in every speaker 🙂 Quote
GuyIsDamGood Posted April 19, 2023 Posted April 19, 2023 MicroMara and babadono; thanks for the help/info. (I'm aware (understand) of the speaker impedance-drops. Yesterday; I've watched many videos on Speaker Impedance-drops (Audioholics videos are best). alright. The Klipsch RF-7 iii Tower Speakers impedance Can drop below 8 - 6 ohms. (yesterday; I played a few bass-tracks. The RF-7 iii Tower Speakers delivered really-nice bass response) - it was 51° in the room. The Rotel RB-1582 Mk ii was Warm but not hot during play-back. 2 Quote
billybob Posted April 19, 2023 Posted April 19, 2023 The minimum watts per channel can be 50 SS. A while back a member used a modern Teac with decent enough sound, and was quite pleased. However, was warned about driving too hard with the lower wattage so. Seems the 7 series can handle impedence dips quite well, as it should. 1 Quote
Zen Traveler Posted April 20, 2023 Posted April 20, 2023 On 4/18/2023 at 1:41 PM, GuyIsDamGood said: Hello I was watching a video on the Klipsch RF-7 iii Tower Speakers. I believe someone said that the speakers are really 4-ohms. Anyone know if that is basically true? Fwiw, the original RF-7s benifited from power sources rated to drive 4 Ohm speakers, esspessially if used in a multichannel configuration and/or played loud. On 4/18/2023 at 2:17 PM, MicroMara said: No, certenly not , they´re 8 Ohm Speaker Hmm...For some reason I thought because of the explanation below in Europe they couldn't be labeled 8 Ohm: On 4/18/2023 at 2:38 PM, babadono said: they have impedance dips way below 8 ohms, they need an amp with Oomph.... Fwiw, both the first couple of generations had a couple of dips below 4 Ohms. On 4/18/2023 at 2:38 PM, babadono said: Are they 8 ohms nominal? I believe Klipsch calls it "8 Ohm compatible." 😎 1 Quote
billybob Posted April 20, 2023 Posted April 20, 2023 1 hour ago, Zen Traveler said: Fwiw, the original RF-7s benifited from power sources rated to drive 4 Ohm speakers, esspessially if used in a multichannel configuration and/or played loud. Hmm...For some reason I thought because of the explanation below in Europe they couldn't be labeled 8 Ohm: Fwiw, both the first couple of generations had a couple of dips below 4 Ohms. I believe Klipsch calls it "8 Ohm compatible." 😎 True...that nominal th...ing Quote
the real Duke Spinner Posted April 21, 2023 Posted April 21, 2023 On 4/18/2023 at 3:17 PM, MicroMara said: No, certenly not , they´re 8 Ohm Speaker At what Frequency ?? Quote
derrickdj1 Posted April 22, 2023 Posted April 22, 2023 It is normal for impedance to vary with music. Dips can below 3 or up to well above 8. Most amp will push the 7"s without a problem. You will cause not only speaker damage but, damage to your ears. On my tube amp in a 20x20 room open to other spaces I rarely exceed 3 watts. 2 Quote
MicroMara Posted April 22, 2023 Posted April 22, 2023 22 hours ago, the real Duke Spinner said: At what Frequency ?? According to the official tec specs they´re 8 Ohm nominal speaker as we know . I have a impedance measurement graphic from a german audio cinema forum in my personal data showing this results. Kindly built your own opinion 🙂 1 Quote
MicroMara Posted April 22, 2023 Posted April 22, 2023 Forgot to tell you what I think about the above Impedance graphic ..every good 8 Ohm SS Amp can handle these dips without any problems, maybe some tube amps can´t handle these impedance dips . Quote
82 Cornwalls Posted April 22, 2023 Posted April 22, 2023 7 hours ago, MicroMara said: Forgot to tell you what I think about the above Impedance graphic ..every good 8 Ohm SS Amp can handle these dips without any problems, maybe some tube amps can´t handle these impedance dips . Why would you think they may present a problem to tube amps? 2 1 Quote
MicroMara Posted April 22, 2023 Posted April 22, 2023 1 minute ago, 82 Cornwalls said: Why would you think they may present a problem to tube amps? a powerfull push and pull or single ended tube amp ( for example 20 W / 8 ohm ) can handle the impedance dips without any problems , may a tube amp with 3 to 5 watt can get problems. These will shut off on higher volume levels. Quote
82 Cornwalls Posted April 22, 2023 Posted April 22, 2023 16 minutes ago, MicroMara said: a powerfull push and pull or single ended tube amp ( for example 20 W / 8 ohm ) can handle the impedance dips without any problems , may a tube amp with 3 to 5 watt can get problems. These will shut off on higher volume levels. Why would a tube amp shut off? I have never heard of such a thing. FWIW I have hooked up four 6 ohm drivers in parallel to a 2 watt set, it never shut off. 3 Quote
MicroMara Posted April 22, 2023 Posted April 22, 2023 7 minutes ago, 82 Cornwalls said: Why would a tube amp shut off? I have never heard of such a thing. FWIW I have hooked up four 6 ohm drivers in parallel to a 2 watt set, it never shut off. as long as 6 ohms is the lowest impedance dip , they don´t shut off , impedances below 4 Ohms can cause a shut off. Quote
MicroMara Posted April 22, 2023 Posted April 22, 2023 The RF 7 MK II has impedances below 4 Ohms as you can see here Quote
82 Cornwalls Posted April 23, 2023 Posted April 23, 2023 2 hours ago, MicroMara said: as long as 6 ohms is the lowest impedance dip , they don´t shut off , impedances below 4 Ohms can cause a shut off. 4 x 6 ohm drivers in parallel is 1.5 ohm nominal and lower in dips. What does shut off mean? Protection circuitry? Never owned a tube amp with that. Do you actually have any tube amp experience/knowledge? 1 Quote
MicroMara Posted April 23, 2023 Posted April 23, 2023 7 hours ago, 82 Cornwalls said: 4 x 6 ohm drivers in parallel is 1.5 ohm nominal and lower in dips. What does shut off mean? Protection circuitry? Never owned a tube amp with that. Do you actually have any tube amp experience/knowledge? There are three ways to connect speakers together: Parallel connection, series connection or the combination of both. If the loudspeakers are connected via a crossover, the load of the crossover apply. So what shell be the sense of your posts if you´know everything so well ? And yes I got tube amps at home . Kindly finish any reply now ! I´m no longer willing to communicate at this level. Quote
stormin Posted April 23, 2023 Posted April 23, 2023 I'll stick with my 1200 wpc @8ohms / 1600 wpc @4ohms ss monoblocs. What dips? 😁 Quote
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