Thanks for that input! Had no idea the GE's weren't true 8 ohms. I bought them used so they didn't come with much. Any amp recommendations then?
I am sure if you have read some reviews with measurements. Here is one:
Test Report: GoldenEar Technology Triton Three Speakers Page 3 | Sound & Vision (soundandvision.com)
"Minimum impedance is
3.4 ohms at 128 Hz with a phase angle of -31°; and the impedance
runs below 5 ohms between 220 and 930 Hz. Impedance rises rapidly below 100 Hz as the signal is handed off to the internal amplifier. Still,
using at least a decent midpriced receiver or amplifier rated into 4 ohms would be a good idea. Sensitivity (average of quasi-anechoic measurement from 300 Hz to 10 kHz at 1 meter at 0° with a 2.83 volts RMS signal) is 85.9 dB."
My recommendation of a 300 W power amp is based on:
- You seem to listen to relatively loud level as you do crank the volume to -10 that most of us on AH probably don't.
Can you check the level trim settings for the LCR channels and report back just in case?
- From the screen shot, it shows the 100.5 dB is based on 2 speakers, but you also did not assume any room gain so I would call it even, that it would be 100.5 dB based on just 1 speaker per THX standard. The sensitivity you entered, 87 dB was still optimistic (as
@Pogre, alluded to earlier on this point), as you can it was only 85.9 dB as measured.
So it is about the combination of relatively low impedance, not so benign phase angle characteristics, low ( relatively speaking) sensitivity, and most importantly the SPL you desired that appeared to be just a few dB below reference level.
A 300 W power amp such as the Anthem MCA225, Monolith 200W X3, or the Hypex NC502MP based Class D amp such as the NC502 and the Purifi 1ET400A should be good.
Note:
@Cos knows those speakers well, he may think a good AVR can do the trick, but as far as I know he did use power amps to drive them.
Those 300 W rated power amps won't do much in terms of improve sound quality for you at listening levels below Volume -15 to -20 for you, but it might if you crank it to above -15 and the contents happen to have much higher than average dynamic. It also might succeed in convincing you brain/ears even if no actual difference are made.
Dynamic range of music various a lot depending on the genres, and the recording/mastering quality. Here's a good site for reference:
Album list - Dynamic Range Database (loudness-war.info)
By the way, Soundstagenetwork.com also reviewed a Trinton but its the newer version the 3+, the impedance curve also shows its more like a 5 Ohm nominal speaker:
SoundStageNetwork.com | SoundStage.com - NRC Measurements: GoldenEar Technology Triton Three+ Loudspeakers