Originally Posted by Molon_Labe
As I work on my room, I have been listening to a lot of my Time Life Music compilation CDs that have been sitting for years collecting dust. I have the 708's just plopped in home theater chairs with them "kinda pointed" in the same direction as they lean and point skyward. I am truly amazed at the sound that comes out of these ugly boxes with zero proper setup. It will take me forever to work through my gazillion Time Life collections, but I am going to enjoy the ride. I have reconnected with music again and can't wait to get the M2's online. The 708s have motivated me to convert my CD collection over to FLAC to stream.
Not just listening - Molon, out of the goodness of his heart
and wanting to see if he could lead me on the road to "perdition"
, lent me a pair of his 708ps so I could do a two week trial, more or less. I'm going to do a L/R+subs comparison of my PSB Imagine T3 vs. the 708p, using the Trinnov Altitude I have as the processor and to do the heavy lifting with level, delay etc. given that these are the p version. Personally I don't do a lot of straight stereo listening nearly as much as using upmixers, but this was too exciting a trial to pass up.
For those of you that aren't aware of PSB, the T3s are the current flagship of Paul Barton's company, and have been favorably reviewed by Stereophile, Absolute Sound, etc. as well as by imagic here on AVS. He comes out of the NRC tradition of using science and testing to refine design, and I believe Dr. Toole worked with him before he joined Harman. But I've had an itch to scratch with the JBL line since the M2s came out and I heard them in person. The 708s are the next best thing in their way, at least as mains...
Got them yesterday, and I have a few set up questions already before I read the manual
Input sensitivity - I'm using analog XLR input from the Altitude, which I can handle on the menu. For the input sensitivity, though, do I set this to +4dbu, -10dbu or does it matter as long as both speakers match?
User EQ - on one speaker I see it was engaged, the other was disengaged (that one may have not been used yet). On the "engaged" speaker, it seems there was a low shelf of 100 Hz and a high shelf of 2.0 kHz, more or less. Do I want to use this setting as is to preserve the tuning or not? I think I'm safe leaving this disengaged but just doing due diligence.
Room EQ, speaker trim, and the like - leaving these as 0 as the Altitude can do all the lifting. Unless I shouldn't?
Other settings - since I'm not using AES I don't think there's anything I should watch for, but if so I'd appreciate the help.
I can't have the PSB vs. the 708s in identical locations without physically swapping them out, but I'll put the 708s directly next to them and a similar elevation (at least to start; I have adjustable stands for them) so I have as close a common speaker azimuth (call it 25-30 degrees) and elevation angle as possible.
Nice thing with the Trinnov is I can do a pseudo 5.1 calibration with my current LCRs and the 708s, and do some tricks with the Speaker Configuration and the solo/mute to easily A/B content for the L/R + subs configuration. And my sub setup is already set, so I don't have to tinker with that beyond what I already have.
More to come...not sure if I'm going to post here or a separate thread (not the new "How to choose a loudspeaker"/science thread, as I think we should leave that one for what is presented by Kevin Voecks and possibly Floyd Toole there), but I set up an Altitude preset where I could easily A/B content between the Imagine T3 and the 708. Along with the usual Trinnov optimizer calibration graphs for the calibration, I'm going to do some REW plots and critical listening, using the HAA (Home Acoustic Alliance) criteria we used in the class I took last fall for Clarity, Focus etc.
Should be fun...