More Bass


I recently purchase a pair of Legacy Signature speakers from an on-line retailer. I purchased them unheard, but I did my due diligence in researching them and I would have thought with the 7" woofers and a rated frequency response of 22-30K hz, there would have been a bit more bass (although there is a couple of tunes I have played where there is some bass that is really deep and sounds all garbled, very weird, but I just won’t listen to those songs,I guess).

I bought floor standers so I wouldn’t have to deal with the hassle that goes along with setting up subwoofers, also with all the space they take up and the negative WAF that goes along with them.

They are a little bright on the top end, but I’ll blame that on my room, it probably needs more treating, just limited on funds at the moment.

If I thought I needed subwoofers, I'm thinking I might have bought a pair of Fritz bookshelfs and a pair of subs, for probably less than the Sigs.

The price of Legacy subs is over the top for me, so do you think there is any way to get more bass without subs or are there any subs that are a bit smaller, that might do the trick as I am pretty limited on space (and funds as previously mentioned!) Thanks

 

 

128x128navyachts

@steakster - @mike_in_nc 

OK, how about 2 subs on the opposite wall 20' away facing the back of the listening position? 

>> OK, how about 2 subs on the opposite wall 20’ away facing the back of the listening position? <<

More likely to help than placement right by the speakers. You’ll never really know unless you measure. We all think we have golden ears, but I for one find measurements more reliable than my ears, in that they don’t change from day to day. But I admit, I fine tune everything by ear -- after getting the basic setup right by measuring.

@erik_squires - Hi Erik, so I asked this directly of Legacy:

What is the minimum impedance of the Signature speaker, is it 2 ohms below 100 Hz?

Their response: "The signature line can go as low as 3.5 ohms"

So, pardon my ignorance, but what does all this mean? Thanks!

Welp, there’s a number of published measurements showing this to be optimistic. As I noted elsehwere, I’ve found a couple of different models shown to be around 2 Ohms for most of the bass. This includes the SE and 20/20. Perhaps I’m misinterpreting the statement or the charts?

For any speaker that goes down this low it means that with many amplifiers the bass output will often be depressed relative to the rest of the range. See the separate thread on the KEF Reference 1 standmount which has exactly this issue.

The solution is a high-current amplifier of which there are many at various price points, but your average integrated amplifier probably wont’ cut it. For sure, almost no tube amp will work here.

At 2 Ohms, an amplifier has to produce 2x the current (Amps) as at 4 Ohms, and 4x the current needed at 8 Ohms.

If I were to guess I would say you are clipping your amplifier. 4 Ohm speakers will surprise you with how much power you need to get the bass to rumble...