Hi guy. I have a RX-A3040 and currently running in 7.2.1 setup.
I'm want to add an external amp for my front to
- off load my front from the AVR
- experiment with bi-amping my front
- do a 7.4.1 setup
- second zone.
To do this I'll need at least a 4 channel amp. I'm considering the used market to keep the cost down.
My plan is to first run my front on the external amp. This will allow me to do 7.4.1 setup. I'll see if there is an overall improvement in system performance in 7.2.1 setup. After that I'll experiment with bi-amping. If there is improvement then I'll leave it at that and the second zone might be served by BT3 later or when the front amp/speakers is upgraded. I can also NOT do bi-amp and use the extra channel for second zone if the need arise.
To sum the possible layout:
- external bi-amp front
- 7.4.1 setup
- 2nd zone later (BT3 maybe or when upgrade front speaker/amp)
or
- external amp front
- 7.4.1 setup
- external amp second zone
Most amp out there (I know of and within reach) will only do 2 channel, while they do A+B most are not bi-amp but bi-wire. I say this because if using A only min. 4 ohm, but A+B is min. 8ohm. And all my speakers are 6 ohm.
After looking around I have 2 possible options:
A pair of Kenwood KM-X1000 listed at RM2500
or
ADCOM GFA-6000 + GTP-600 listed at RM1588
or
Emotiva BasX-A300 (but where's the fun in experimenting?)
My question is will these amps allow me to do the above?
Are they at least as powerful and as clean as my RX-A3040?
With the KM-X1000 I should have enough power. Being separate amps, I have better redundacy if one goes down.
With the GFA-6000 I'm thinking to drive my HF using the 2 rear 60w(8ohm)-100w(4ohm) channel and the LF using the 2x100w(8ohm)-150w(4ohm) front channels.
As a bonus I could even drive my center using the 3rd front channel.
The pre-amp will probably be useful when I setup second zone.
My speakers are as below:
Front Yamaha NS-F160, Nominal/Max 50W/300W, 30Hz-36kHZ (-10dB), 87dB/2.83V/1m
Center Yamaha NS-C160, Nominal/Max 30W/80W, 60Hz-38kHZ (-10dB), 86dB/2.83V/1m
Front Height Yamaha NS-B160, Nominal/Max 30W/80W, 60Hz-38kHZ (-10dB), 82dB/2.83V/1m
Surround Back, Yamaha NS-B330, Nominal/Max 40W/120W, 55Hz-45kHZ (-10dB), 87dB/2.83V/1m
Surround Side, ELAC Debut B6, Nominal/Max ?W/120W, 44Hz-20kHZ (?dB), 87dB/2.83V/1m