aholloway17

An interesting discussion and tedious process! From what I understand and have experienced, some amps aren't well suited to horizontally bi-amp, the more conventional way. In my case, I could choose the more conventional approach but wanted to bypass having to use and external crossover as is recommended if not required when connected horizontally. The vertical approach preserves the use of the amps internal crossover and referred to as passive setup. That's my 2 cents!

Well, thank you all for your council it has been very helpful. Both amps, the preamp, and speakers are singing along very nicely after much effort. In the process I discovered one amp's output connections is loose and is in need of repair but works if it isn't disturbed. It sounds like the second may be suffering some aging caps. In all, I think both will spend sometime on the bench of my local Carver expert. One amp is non-inverting, I thought if stereo mode was selected it wouldn't be a problem. It caused a little static out of the right speaker. That actually resolves when using the Main 1 left channel output from the preamp and the Main 2 right channel to feed their respective amps via a Y connector. I am not sure that is the "long" term solution but it seems to be working nicely. As for the sound, the one clear difference is the bass signature is much more deep and present or clear. Thanks for getting me on a better path! Cheers,

Hi All, I am hoping someone can help answer the question of whether or not I can vertically Bi-Amp two M-1.0t amplifiers? My setup includes a Sunfire Classic Tube Preamp and the two amps previously mentioned. I've tried connecting the preamp to the amps via right channel output to right amp and the same for the left side using a y-cable. Then connecting the output from the amp to a speaker, left side to the tweeter and the right side to the woofer. Awful static and hum. Thoughts? Cheers

Wow, that is a great explanation! And something I will never try to fix on my own. As my sub is at least 12 years old, it's time for a tune up by a qualified technician! Thanks a bunch!

Lol, I take it the spider help hold something together but I've no idea what!

Hi all, I just added a pair of B&W CM5 S2 speakers to my set up. While trying to balance the sub, it seems to have developed a significantly loud thump? This particularly occurs when playing a track with a good bass line and at any level as long as the volume up so the music is audible. This seems to occur every 4 to six beats. Not only is it audible , but if I put my lightly on the driver, I can feel it hit really hard. Up until I tried to balance the sub with the new speakers, it never displayed an off sound. I've had it for twelve years. I've switched outputs from the Sunfire Tubed Preamp, cables, and unless I turn the volume all the way down it occurs. Adjusting the crossover setting yield no change. And no, it doesn't matter the song, one I've played for years or a new one. Should I be looking at the preamp? Because that plays smoothly if the sub isn't on. Thoughts? Cheers,