2 channel preamp for music only system


Hello everyone,

I’ve been reading posts and responses and have been in awe at the quality and detail of responses. 
Recently I decided to repurpose my Adcom GFA 555 as part of a 2 channel music system using my HT receiver zone 2 as the preamp. The normal pre outs would require that I go into setup each time.  I quickly determined that I would be better off by adding a dedicated preamp to the system. 
When using zone 2 with the Adcom, I have no volume control, yet it doesn’t seem very loud. 
I guess my question is, with a preamp, could I expect more volume?  I’m streaming using a blusound node 2. Seems like a 200 watt per channel should play louder. 
For example, my HT speakers are Focals with a similar spl to the JBL’s, but play significantly louder than the JBL’s yet the amp is of a lower power.
 

2 channel system current configuration…

Pioneer Elite SC. LX 901 (using zone 2 as preamp)

Blusound Node 2i (streamer)

Adcom GFA 555 (power amp)

JBL L100 Century speakers

I’m thinking of adding either a Parasound or Adcom preamp (budget under $1k) but would love to hear suggestions from you or ways to make the Pioneer act as the preamp without having to change settings (turn off home theater speakers, change subwoofer volumes, etc.)  

thank you!

 

 

bobbergman

   FWIT the JBL Century 100’s are based on 4311’s (  I’m assuming you have the original ones ). They take a massive amount of power and you really can’t rely on the efficiency rating.  Also as you know wattage ratings are not equal Vs different brands. Those speakers are happy at about 300 watts. Your amp Is no slouch but just keep that in mind. I was able to run my 4312’s with a 200 wpc Modwright. I also did the home theater / stereo combo like you and eventually went back to 2 channel as mentioned, and then to low powered tube. Happy Listening , Mike B. 

I run my new JBL L100 Century’s with a 200wpc McIntosh MA6600 integrated. I also use a SVS SB2000 sub to fill out the bottom end.

Thanks to everyone for responding.
 

Yeah, I have the old version (century’s).  I was a little surprised at bullrider97’s comment about how power hungry they are after reading the spec’s where they recommend 50 watts per channel. 

@stereo5, sounds like a nice set up. I imagine Macintosh’s 200 wpc has a little more punch than my Adcom at the same rating. 
I also have two SVS PB-2000 subs in my HT system (same room).  I’m planning on using one or both. 
 

I still have a few Adcoms 7400, 5800, 5500, 565 x a few. I had a pair of 565 rebuilt by Brain and a 5800. They were better than a lot of the older Macs. The 5800 was over 400 wpc after Brain did his work.. It’s a good Pass design. They could spin a power meter pretty good too. The 565s were 2 ohm stable and 900 wpc. After getting rid of the cheap factory sound caps they sound really good too. Not as good as the 5800, or 5500. Big Black Boxes. All of them. Brain had after marker boards he would stuff for the 565s. The caps would leak and ruin the board. Then blow up speakers, DC thing.