4 ohm or 8 ohm?
charley95
Posts: 908
I spoke with the maker of my amp today to question that my amp is common ground. He stated that it is. Rogue Cronus/Magnum integrated 90WPC.
He asked what speakers I'm using,[2.3's] running on the 8 ohm output on the amp. He recommended I use the 4 ohm tap instead. He stated it might have a small amount of sound improvement. Any thoughts on this? 4 ohm vs. 8 ohms? My knowledge on this is limited.
Thanks!
He asked what speakers I'm using,[2.3's] running on the 8 ohm output on the amp. He recommended I use the 4 ohm tap instead. He stated it might have a small amount of sound improvement. Any thoughts on this? 4 ohm vs. 8 ohms? My knowledge on this is limited.
Thanks!
Post edited by charley95 on
Comments
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I spoke with the maker of my amp today to question that my amp is common ground. He stated that it is. Rogue Cronus/Magnum integrated 90WPC.
He asked what speakers I'm using,[2.3's] running on the 8 ohm output on the amp. He recommended I use the 4 ohm tap instead. He stated it might have a small amount of sound improvement. Any thoughts on this? 4 ohm vs. 8 ohms? My knowledge on this is limited.
Thanks!
I believe the 2.3's are 4 ohm speakers. -
audiocr381ve wrote: »I believe the 2.3's are 4 ohm speakers.
Mine are 6 ohm. -
He's right, use the 4 ohm tap.
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Try it and see........if it were me I'd run the 4ohm tap.
H9"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul! -
I would run the 4ohm tap as well. 2.3's are 6ohm nominal and drop below it easy.
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Try it and see........if it were me I'd run the 4ohm tap.
H9
Made the switch, no difference that I can tell. -
Made the switch, no difference that I can tell.
I thought that would happen
You might hear a difference at higher volumes? -
some say the 4 ohm tap may provide better bass control--dunno the specific's,but I seem to prefer the 4 ohmer myself.YMMV--good luck.JC approves....he told me so. (F-1 nut)
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I was reading DK post http://www.polkaudio.com/forums/showthread.php?129829-The-AI-1-Dreadnought-Project-Pt.2-Upgrade-to-1000VA-Transformer about the AI-1 Dreadnought and noticed under his equipment listing "Polk Audio SDA CRS+ loudspeakers (extensively modified), 4 ohms nominal impedance." This made me wonder what he had done to "convert" the 6 ohm CRS+ to 4 ohm. So thinking I might have another tweak to try I put my limited search skills to use and found this thread http://www.polkaudio.com/forums/showthread.php?73321-SDA-CRS-Mono-Modification-Advice& were DK state "I rewired the CRS+'s dimensional drivers to be in parallel with the stereo drivers. This dropped the nominal impedance from 6 to 4 ohms...".. Not sure if this was what he was referring to in the AI-1 thread I kept searching and came upon a thread from 2009 http://www.polkaudio.com/forums/showthread.php?91906-SDA-CRS-6-ohm-Question and this thread were in 2009 F1nut and in this thread H9 state try using the 4 ohm and the 8 ohm tapes with the CRS+. Well since I have since my tube amp has 4 ohm taps I decided to give it a try. And I am glad I did. It was clear to me that the 4 ohm tapes on my amp gave more punch to the bass. I am been listing to Dvorak "New World Sympony" and really enjoying the improvement in the sound. I have not noticed any roll off in the highs like was suggested in other forums post I came across while doing searches. So thanks DK, F1nut, and H9. And now back to the music.
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The only difference between 4 ohms or 8 ohms speakers is just the impedance!!! sound will be the same. The bad part is for the amp, it will work harder at 4 ohms (nothing to do with sound again) as long the impedance is not lower then amp specifications is ok. all depends how low speaker impedance your amp can take. The safest for an amp is usually 8 ohms, but some go down to 4 ohms and rare can take 2 ohms (talking about home amps here). again impedance has nothing to do with sound quality!!!!Make it simple...Make it better!
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I just checked and I am free tomorrow afternoon, would you like to come over and have a listen for your self?The only difference between 4 ohms or 8 ohms speakers is just the impedance!!! sound will be the same. The bad part is for the amp, it will work harder at 4 ohms (nothing to do with sound again) as long the impedance is not lower then amp specifications is ok. all depends how low speaker impedance your amp can take. The safest for an amp is usually 8 ohms, but some go down to 4 ohms and rare can take 2 ohms (talking about home amps here). again impedance has nothing to do with sound quality!!!! -
Sorry, tomorrow and all this week I will be busy BUILDING an amplifier for my friend. Did I mention that I build amplifiers?:cheesygrin:I just checked and I am free tomorrow afternoon, would you like to come over and have a listen for your self?Make it simple...Make it better! -
This is my diy amplifier. Attachment not found.Make it simple...Make it better!
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again impedance has nothing to do with sound quality!!!!
Sure it does. I think what you failed to take into account here is that we're talking about tube amps and matching the impedance of the amp to the speakers definitely affects the sound quality.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
It made a huge difference on my setup. Read from the following link below. The forth post is where I talk about the benefits I just got. http://www.polkaudio.com/forums/showthread.php?129980-RT600i-ohm-questionSure it does. I think what you failed to take into account here is that we're talking about tube amps and matching the impedance of the amp to the speakers definitely affects the sound quality. -
This is my diy amplifier. Attachment not found.
Sorry you can't make it. Nice looking amp. Sort of looks like the one I have.
By the way.... "Tube Rule".....:cheesygrin: -
The only difference between 4 ohms or 8 ohms speakers is just the impedance!!! sound will be the same. The bad part is for the amp, it will work harder at 4 ohms (nothing to do with sound again) as long the impedance is not lower then amp specifications is ok. all depends how low speaker impedance your amp can take. The safest for an amp is usually 8 ohms, but some go down to 4 ohms and rare can take 2 ohms (talking about home amps here). again impedance has nothing to do with sound quality!!!!
Impedance matching on a tube amp is to maximize power transfer and minimize distortion both! Tubes are forgiving with the swinging impedance speakers present, but lowest distortion with most power transfer is at a specific value for every tube at it's operating voltages. The load the tube operates into is that varying impedance of the speaker through the ratio of the output transformer.
Using the correct tap does give you the best situation for control over the drivers and minimizing distortion.
CJA so called science type proudly says... "I do realize that I would fool myself all the time, about listening conclusions and many other observations, if I did listen before buying. That’s why I don’t, I bought all of my current gear based on technical parameters alone, such as specs and measurements."
More amazing Internet Science Pink Panther wisdom..."My DAC has since been upgraded from Mark Levinson to Topping." -
I have tube amp. I have SDA 1C (6 ohm). I tried 4 and 8 ohm and ended up like 8 ohm sound better. Very little difference though. IMHOI got static in my head
The reflected sound of everything -
Sorry you can't make it. Nice looking amp. Sort of looks like the one I have.
By the way.... "Tube Rule".....:cheesygrin:
Maybe you are right about that, but some people can build diy amps that will put those commercial amps on shame. take a look of this post http://www.diyaudio.com/forums/pass-labs/166784-pictures-your-diy-pass-amplifier-109.htmlMake it simple...Make it better!
