Sub recommendation for vienna acoustics bach grand

Another option you may want to consider is to upgrade your amp first. You're only going to get so much out of your receiver. If you give the speakers more power,they should give you much better bass than what you already have. After that, then get subs if you feel that you still need them. The reason I say upgrade you amp first is that you may choose a different sub because of the amps effect in your system.

Home Theater setup used REL B2 with Vienna Acoustics Haydns Grands.

Other options:
JL Audio
REL R Series
Paradigm Sub 12

Magic 8 ball says: Ask again.

Zd542 told it like it is, until you get a strong 200 watt + amp you will never even know what your speakers sound like and if you even need a sub.
In a room that large, with those speakers, I would not settle for an amp with less than 300w a side at 4 ohms.
Plus, using a sub in a room with even dimensions would be quite a trick.

I would tend to agree with ZD542. The Bach Grands are 4 ohm nominal speakers, meaning they probably dip below 4 ohms in part of the audio band. Very few receivers are capable of properly driving a 4 ohm or less load.

Buying a separate amp that is rated to drive 4 ohm loads will result in better bass definition and control. As ZD542 mentioned, you may find the need for a subwoofer is mitigated or even eliminated. I would certainly try this first before investing in a subwoofer.

You may want to consider auditioning something like Emotiva's XPA-200: 240 watts/ch. (into 4 ohms) stereo amp which has a 5-year warranty. The cost is only $499 (with free shipping) and they give you 30-days in-home trial and will pay to ship the unit back if you decide not to keep it.

http://shop.emotiva.com/collections/amplifiers/products/xpa200

The Emotiva amps are seriously good for the money...

-RW-