Ayya Khema
pfm Member
I would have to compare them directly. Both the M40 and LS58 are bad design.
and id probably also take a shl5 over both of them.
Graham Audio LS5/9
- Thread starter vln
- Start date
and id probably also take a shl5 over both of them.
Ayya Khema
pfm Member
a quick question. the room acoustic is way more important in the low end then the relative detrimental effects of group delay?
gryphongryph
pfm Member
Maybe you should design your own speaker line when you are not shy to call two famous speaker designers making bad speakers)))
gryphongryph
pfm Member
What most people forget is that the most know how in a bbc speaker is the crossovers that are quite advanced, and that’s why they work so good.
Yank
Bulbous Also Tapered
That depends on the motor...
Ayya Khema
pfm Member
yep
just like i posted a page ago. a 15" is often 2 to 3 times faster then a 8" woofer.
fan boy
my speaker is DIY and i just might!
S-Man
StrivingON
I think that depends on your POV.
IMO/E:
A good room will sound better than a poor room (of course), BUT putting an accurate signal into an average room will sound better than one with excessive LF group delay into a good room. IME the brain is good at "compensating" for the room, but less happy about dealing with a signal with timing issues at LF.
Ayya Khema
pfm Member
thx! ive began to read about group delay. i admit i never cared much about it since i bought decent speakers. now that i build my own... its super interesting!
yeah, back to the LS5/9
lovely speakers. To me the volt midbass sounded very very nice.
tuga
Legal Alien
Different types of distortion may not mask each other so your "more important" is relative.
Room interference will produce ringing peaks and nulls below the Schroeder frequency. If you address the former the it is likely that group-delay might be more obvious/audible.
Peter_Tos
pfm Member
Why? The Harbeth m40 driver is the same size as the shl5plus driver, but it is also in a separate small box. And that means it's faster than the same driver in the big 60 liter box of the shl5plus.
S-Man
StrivingON
Ayya Khema
pfm Member
id have to audition to both be sure
the shl5 is a bit more efficient and dont drop too low in the impedance making amp matching + SHL5 much easier then with the M40.
Chris81
pfm Member
My post wasn't offtopic, it was related to the difference between the Graham LS5/8 and LS5/9.Says the man who dragged it off topic with post #249
Beside that, I still see no problem to call for topic, even if I went offtopic too.
Allaboutmusic
pfm Member
Not sure that’s correct, shl5 has an 8’’ driver and m40 12’’ I believe. What is the separate box sorry?
Martyn Miles
pfm Member
I've forgotten, what IS a Graham LS5/9 ?
canonman
pfm Member
Peter_Tos
pfm Member
I'll explain. In the Harbeth m40 speakers, the midrange is reproduced by an eight-inch Radial driver, it's in the middle between the tweeter and the bass driver. This Radial driver inside the cabinet has its own volume. That is, there is a small box attached to the front of the enclosure from the inside, in which the midrange Radial driver runs. You can see pictures of how this is set up in various reviews on the Harbeth m40. The rest of the cabinet is for the bass 12" driver. It needs a lot of volume and is slow. And the midrange Radial driver is fast. And it turns out that the midrange in the Harbeth m40 is faster than in the Harbeth shl5plus, where the Radial driver has to play both midrange and bass, so it runs the entire volume of the speaker cabinet.