Upgrade my amp again


Hi. For some reason, I am not able to reply directly to the thread below. But in response:
Well this is all really interesting. (To Rich, no the row house system is distinct, and I will definitely use mini monitors there.). As for the PSB's in this other room, this is really interesting advice. I had never had floor standers, and was really seduced by the reviews, but maybe it isn't the right speaker for the space. (I am new to this.) To Phaelon, do you mean the Totem Model 1 Signature? What amp would you put with them? And is the general issue about right amp for a speaker about the ratio (ie double the watts at 4 ohms) or is there an absolute number? Ie: ideally you would like 80 watts for a 4 ohm speaker? Thanks again!
mcanaday
Hi all-
As always, I learn a lot from the conversation here and am grateful to all who weighed in. (I have only been slow to respond because I've been stuck cleaning the basement all weekend. It's clean now!) To respond to some of what has been raised here: it is quite possible that these speakers are all wrong for the room. I am enjoying them, but I am new to this. It's possible I have no idea how good the really good stuff can sound. The limits of the room (ie ceiling height) are what they are, though, and I am always going to have to live with that. It does seem like whether or not a mini monitor would be better for the space, there seems to be consensus that a better amp wouldn't be a bad idea. I'll probably start there, and then think about changing the speaker or adding a sub after that (depending on how the new amp sounds). A few other comments. Thanks, Bob, for your advice. I will read Dr. Toole! And thanks too, Phaelon. No worries at all about the gender mix up (I'm assuming that 95% of the folks who post on these sites are guys, so it was a pretty fair assumption!) To Zd542...the issue was not breaking up or distortion. Only that rock doesn't sound crisp, clean, or detailed on this system. As for what music I like: jazz, blues, country, rock, pop, etc. To TLS49 or anyone else, I am a bit confused about which number matters when deciding if an amp has enough power for my speaker. You have recommended an amp that is above 100 wpc. So to take an example, the Musical Fidelity M3i is 76 wpc, but that is 76 into 8 ohms and 137 into 4 ohms. My assumption is that this amp would be powerful enough (because of the 137 number.) Is this correct? Thanks again, guys, for all the good advice. I am having a lot of fun trying to figure this all out. Lots to learn! cheers, Margot
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Margot - One more thought. What kind of floor do you have? If speakers aren't mated to the floor properly, that can definitely contribute to bass issues which might seem to “muddy” the sound.
the Musical Fidelity M3i is 76 wpc, but that is 76 into 8 ohms and 137 into 4 ohms. My assumption is that this amp would be powerful enough (because of the 137 number.) Is this correct?
Margot, the MF M3i would definitely be much better than the Marantz pm5004, and it may be powerful enough with a 3db increase at 8 ohms and approximately a 4.5db increase at 4 ohms, however the required power is determined by a relationship between the peaks of listening volume, listening distance, and speaker sensitivity. As far as the 8 or 4 ohm rating, when a manufacturer recommends a power rating for a speaker, this is generally the 8 ohm rating. The 4 ohm rating for an amp helps determine how substantial the power supply is, and its ability to deliver the power into a demanding load the speaker may present as music is played.

Take a look at the owners’ manual for the PSB T6 here; section V- D. (Recommended Power),

http://www.psbspeakers.com/content/110616100531-PSB_OM-200ImageImagine_English_Manual.pdf

The manual even recommends a minimum of 50wpc for room filling volume. The MF M3i may be adequate for your needs, but the only way to know is try it, or get a SPL meter as Bob stated, measure maximum peaks in various music, and do the calculations. For more power in the price range you stated, the Creek Evolution 5350 and the NAD C 375BEE are good choices. Also, with more power, The Peachtree Nova125 would offer two choices in the character of sound by switching its’ tube buffer in and out. It also has digital inputs, but only one analog input.

Phaelon has brought up a very good point about how the speakers are coupled to the floor. Again, look at the owners’ manual in section I-B-2. (Molded Feet and Stabilizers). Are you using either the spikes for carpet, or rubber feet for a hardwood floor?
Hi Bob, Phaelon, and Tls49,
Thanks again for all your advice. Lots to consider here. As for floor treatment, I think I am probably okay. I have the speaker spikes in a berber carpet. That wouldn't pose an issue would it? And I will look into the meter and do some measurements. with thanks! Margot