bass speaker help

[tinitus]

he, tested the woofer today, and it still works
but it was very close not to, when I almost dropped glue into magnet gap
lesson learned, never move glue over the open voice coil

 

[tinitus]

ok
I had to put it back in my big midhorn
just to hear how its changed

and its changed
the 'signature' is still there
but its now much less 'ressonant'
cleaner, and more homogene
it apparently aslo means a less output

feels much easier to play now
with nicer tone, and more natural
thats the most important thing
and what I was hoping fore
I wont do any coating until its been tested in the dipole

 

[tinitus]

ok, to try my woofer the dipole way, built this open back thing
not very good or solid, but ought to do for testing

 

[tinitus]

the wood)wings) rings like a bell
very annoying
cut off some wood
and it definately helped
next is to add bracing/reinforcement wood, vibration control

so far it works ok
playing solo its not so good
but it integrates well with the music
tho not very loud

 

[AndrewT]

Resonance control.

Both the resonant frequency and the resonant damping (Q) can be altered.

 

[tinitus]

ok, ressonance control it is then

but most important to me is, I can now play/practice again, without severe tinnitus attacks
not yet fullly there, but its going in the right direction
and this only one step on the way

with designing/constructing a bass cab, there are many issues I did not expect
have to admit, I still know very little about this
and I now understand why its not so easy to design good commercial bass cabs
definately not simple or straight forward

 

[chris661]

tinitus, here's something to try.

Add cushions/pillows around the back of the driver, so that you can't see the cone from the back.
This will absorb some of the backwave, giving more output forwards (heading towards cardiod pattern).
I did this with a smaller speaker (on a small baffle) some time ago (used about 1" of polyester wool), and output improved dramatically.

Chris

 

[tinitus]

tinitus, here's something to try.

I might do that, in the end
for now its more a 'study'
its really loud enough for me
Im just saying, dont expect it to do a rockandroll concert 😀

lows are ok, and clean
with that little touch of 'gnarly' tone I happen to like
but theres simply too much 'midrange', giving a 'canny' sound
I have noticed this 'canny sound' tendency before, when adding that gnarly tone with amp electronics

but obviously some of the 'can-sound' now comes from the wood/construction
and also, the woofer will most likely need a bit of coating
no doubt, this woofer cone is light, and stiff
might do a better job as guitar speaker

 

[lduarte1973]

i have my doubts with open baffle speaker for bass ...bass reflex and stuffing would give better low end and spl

 

[tinitus]

i have my doubts with open baffle speaker for bass

if open back design....18" would most likely be better 😀

 

[AndrewT]

It depends on what "sound" the guitarist wants.
The [electric guitar+amplifier+speaker] = instrument.

Making music is quite different from reproducing music.

 

[lduarte1973]

if open back design....18" would most likely be better 😀

nah just had a sub to it. 😀

 

[tinitus]

I suppose you mean with active xo ?

well, it is my plan to use active xo
but have my doubt about the sub thing
I expect to cross higher

 

[tinitus]

apparently the wood ressonances in my construction drives the string pitch upwards
or the audible part of it
messes with string tuning

not good enough, yet

maybe we are now into what is called 'egalite'
I have only known this with acoustic instruments
if 'egalite' is the right word at all

btw, occationally I have noticed a similar effect, or problem, when using tone controls/eq

 

[Nigel Goodwin]

i have my doubts with open baffle speaker for bass .

Likewise - it's building a cabinet for bass that has no bass response at all.

 

[tinitus]

it aint simple, no
bass is ok though
but leaves the rest pretty much 'unmasked'
thats the problem

need a good woofer, and the money
and not absolutely sure which one to buy yet
but its not going to be a cheap semi pro woofer again
thats for sure

 

[nigelwright7557]

need a good woofer, and the money
and not absolutely sure which one to buy yet
but its not going to be a cheap semi pro woofer again
thats for sure

I use an eminence sigma pro and a Fane Collussus 18xb.

 

[tinitus]

Fane could be one of my 'options', yes

I think 15" will be my upper limit, to have a 'small' box

 

[tinitus]

apparently the wood ressonances in my construction drives the string pitch upwards

ha, I just had a nice talk with Mr Karlson
stay tuned 😀

 

[tinitus]

just did a few experiments
shape and how its placed seems to make a big difference

I will try this one