tube amp for Apogee Tweeter mid-range

Hi Scott

How much breakin time is on the new caps that were installed? Is the crossover passive or electonic? Passive crossover caps and resistors can take up to 300hrs to burn in and open up. Your description of sound is what you can expect for the first 25 to 50 hours. After that things begin to mellow out and expand at the same time. What brand caps did you use?

Ed

Thank you for your responses,

You are probably right about the burn in time for the capacitors. I'm using Clarity Caps SA, and I remember when I built some speakers last year and had a similar problem. It took a good three months for the higher frequencies to settle down. Once they burned in, the sound was beautiful. After that time period I may try a Rogue amplifier since my local dealer carries Rogue.

Dave, When you said Biamping the Apogees is a waste of time, what effect did biamping have on the sound from your Apogees? When I first tried biamping with my Pass Labs x150 and Sim Audio W3, it really opened up the sound and allowed me to match the strength of each amplifier with either the bass panel or tweeter midrange ribbon. I have never tired using tube monoblocks to power the stages, only an Audio Research Vs110 amp. I though the sound frp, the Audio Research was a little to "soft and mellow" for my taste. Maybe I should try a few more tube amps.

Scott

Scott

I replaced the caps and resistors on a pair of Polk Sda srs speakers last year. I now have about 300+ hrs on them and just last month I noticed they opened up wide and deep.
Take your time with the upgrade to amps so you can hear each tweek as you go along. You can't go wrong with a Rogue amp or a single ended tube amp. The tweeter ribbon only needs a few watts to give you ear peircing SPL
I've listened to Pass Labs with a Dunlvy V setup and was very disappointed with the performance. Pass is very overpriced and over rated IMO
I listened to the same speakers with a pair of Lamm monblocks. I was left thinking something was wrong with the pass amps thats how dissapointing the sound was

Ed

Scott

Biamping...or at least passive biamping, didn't do anything for me. I came to the conclusion, that one single better quality amp, sounds better than two lessor quality amps. The ribbon doesn't really need gobs of power...and it shares midrange duty with the bass panel....all the two-ways do.

With the panel and ribbon, both reproducing some part of the midrange, using "unlike" amps is very hit and miss (worse case is trying to blend SS with tubes)...although I note, that it does work...and sound fine to you in your system....hit and miss (I guess you hit).

Biamping the larger three-way models works out a little better, because you have a dedicated midrange ribbon, and it crosses over to the bass panel at a much lower freq.

Maybe your dealer will let you take a pair of Rogue 150's home for a few days (have him put KT-88's in it, and use the 4 ohm speaker taps)....and a good tube preamp?

Ed brings up a good point about burn in, I'd give that some time also.

Dave

Scott:

You can try Audio valve or Antique SOund Lab.

I agree with Dave that bi-amping is a waste of time.

B-amping (many many combinations) never worked for me because of lack of coherence. My current configuration is Apogee full range (modified) driven with one amp, the TRL GT-800. The negative effect of this excellent sound is total satisfaction which has made me lose all interest in trying out more amps and even posting on forums.