azs wrote:

Been listening to a pair of DM604 S3 for last 8-10 years. Been very happy with them but considering upgrading to the 804 D3 series.

From what I understand the major differences are:

1. The 804 cabinets are constructed to eliminate cabinet resonance by using a curved design and superior internal cabinet bracing.

2. The diamond tweeter on the 804’s is superior to the DM tweeter.

3. The 804 frequency response is wider at both ends...they go slightly lower in the base and have superior high frequency resolution.

I'm curious how audible the difference will be. I will give them a test run but curious frow audiophiles what I can expect. I use a Bryston B100 amp and NAD M12 preamp/DAC.

Many thnx in advance...

The 804 should be a big step up for you, but listening in some store environment will not tell you anything.

The only way you will be able to evaluate the difference is to get them in your home with your amplifiers, etc. This is especially so with regard to bass performance, which is entirely room-dependent. The acoustics are the critical part of the equation.

It may be hard to get them on loan, but that is really what you must do. The only other option may be to buy them with some agreement on a return if not satisfied.

Agreed. The room, can make or break the speaker's performance. Not just the bass, which may wreak havoc with standing waves, but depending on the finishing and furnishings, the tweeter may sound totally different. The first thing I do with a new speaker is to check the in room frequency response and thus have an idea of how it will sound in that particular room from a particular location in that room. It's useless, auditioning speakers in dealers or audio shows. The room cannot be excluded from the formula. It becomes part, an extension to the speaker.