I’m looking for a good 10” woofer for a ported box about 40l . I don’t want to spend more than $100. Per. If possible.
Thanks for any help.
Thanks for any help.
Hello!
Browsing Parts Express, I supposed you're in US, I simulated the GRS 10SW-4HE 10" in a ported 40L box.
Just US$44.99.
This is for a 3-Way speaker.
I see a good FR. 29.5Hz @-3dB.
Tuning freq=21Hz. Port 2" and 30cm long. Someone may say is too small, but look the port air speed at the usable frequency range not the peak at 13Hz.
The idea is just to use some port gain - this helps to keep port air speed moderate above 30Hz and group delay below 11ms above 30Hz.
Do you have and idea of how much SPL you plan to reach?
With 180W on this speaker (XMax limit), the simulation indicates 107dB SPL.
Browsing Parts Express, I supposed you're in US, I simulated the GRS 10SW-4HE 10" in a ported 40L box.
Just US$44.99.
This is for a 3-Way speaker.
I see a good FR. 29.5Hz @-3dB.
Tuning freq=21Hz. Port 2" and 30cm long. Someone may say is too small, but look the port air speed at the usable frequency range not the peak at 13Hz.
The idea is just to use some port gain - this helps to keep port air speed moderate above 30Hz and group delay below 11ms above 30Hz.
Do you have and idea of how much SPL you plan to reach?
With 180W on this speaker (XMax limit), the simulation indicates 107dB SPL.
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Sorry for not getting back to you sooner. I’m really looking for decent bass , more than volume. This is another budget build I’m thinking about. I was thinking of an 8” , but then why not just go bigger. I’m looking a box about 2cu ft .
This SB Acoustics paper 10"er looks interesting: https://www.madisoundspeakerstore.c...tics-sb26sfcl38-8-10-paper-cone-woofer-8-ohm/
QTS of 0.53 tho, so maybe not as ideal for ported.
QTS of 0.53 tho, so maybe not as ideal for ported.
If you go with 2 cu ft, the FR gets even better with GRS 10SW-4HE 10".
24Hz @-3dB. Tuned to 23Hz, not boomy and low group delay.
Not see a 10" in a such low volume. Closed box is possible. A 8" is a better option.
The only driver I have seen in this volume is the L26ROY with a passive radiator.
Why? What do you think is not proper?
The simulation shows good result and I have actual real results. I've made 3 loudspeakers last year with 10" in 40 and 58 liters with reasonable good result matching the simulation.
usual 10" woofers need more than 40 liters, ported, for an even response.
high mms 10" subwoofers may work fine with 40 liters (ported). but their sensitivity is lower.
By experience with bass reflex box lower than 40L with a decent bass extension F3 40Hz and a good sensitivity for a 3ways ~85dB.
It is interesting for the thread, you give the reference of your 10" drivers...
You find 10" pro drivers 20L BR but F3 70Hz...
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@stv and @jerome69
Note that the tuning frequency is 23Hz, very low.
I'm not using the peak port gain for the sugestion and for my actual projects.
I'm using more a side effect of port to extend the FR down to 30Hz without being boomy.
And yes, I'm using low sensitivity woofers with MMS between 70g and 110g.
My speakers are for moderate SPL residential and studio use, around 100dB with 100/150W.
The 10" I used have the following T/S (I measured myself with added mass):
TS Parameters file
Room EQ V5.31.3
Dated: 04/11/2024 17:18:24
From measurement NAR1004L2 FreeAir
Zmin 3.97 ohm
fmin 75 Hz
f3 159 Hz
Le(f3) 3.208 mH
Motional impedance parameters
R0 58.95 ohm
CMES 939.1 uF
L0 30.523 mH
beta 0.0208
omega0 278.0
Blocked impedance parameters
RDC 3.20 ohm
dR -0.00 ohm
Re 3.20 ohm
Leb 264.3 uH
Le 5.761 mH
Rss 100000.0 ohm
Ke 0.3591 S-H
Thiele-Small parameters
fs 29.5 Hz
Qms 8.511
Qes 0.558
Qts 0.523
Fts 56.4
Mms 107.37 g
Cms 0.270 mm/N
Rms 2.342 kg/s
Vas 46.00 litres
Bl 10.693 Tm
Eta 0.20 %
Lp (1W/1m) 85.21 dB
Dd 21.00 cm
Sd 346.4 cm^2
Added mass measurement: NAR1004L2 19g
Added mass 19.000 g
Air temperature 24.0 C
Air pressure 1013.25 mB
Air density 1.1879 kg/m^3
Speed of sound 345.6 m/s
Note that the tuning frequency is 23Hz, very low.
I'm not using the peak port gain for the sugestion and for my actual projects.
I'm using more a side effect of port to extend the FR down to 30Hz without being boomy.
And yes, I'm using low sensitivity woofers with MMS between 70g and 110g.
My speakers are for moderate SPL residential and studio use, around 100dB with 100/150W.
The 10" I used have the following T/S (I measured myself with added mass):
TS Parameters file
Room EQ V5.31.3
Dated: 04/11/2024 17:18:24
From measurement NAR1004L2 FreeAir
Zmin 3.97 ohm
fmin 75 Hz
f3 159 Hz
Le(f3) 3.208 mH
Motional impedance parameters
R0 58.95 ohm
CMES 939.1 uF
L0 30.523 mH
beta 0.0208
omega0 278.0
Blocked impedance parameters
RDC 3.20 ohm
dR -0.00 ohm
Re 3.20 ohm
Leb 264.3 uH
Le 5.761 mH
Rss 100000.0 ohm
Ke 0.3591 S-H
Thiele-Small parameters
fs 29.5 Hz
Qms 8.511
Qes 0.558
Qts 0.523
Fts 56.4
Mms 107.37 g
Cms 0.270 mm/N
Rms 2.342 kg/s
Vas 46.00 litres
Bl 10.693 Tm
Eta 0.20 %
Lp (1W/1m) 85.21 dB
Dd 21.00 cm
Sd 346.4 cm^2
Added mass measurement: NAR1004L2 19g
Added mass 19.000 g
Air temperature 24.0 C
Air pressure 1013.25 mB
Air density 1.1879 kg/m^3
Speed of sound 345.6 m/s
That is indeed a low sensitivity 10" subwoofer!
I have some candidates in an old list I once made (not sure about availablility, however):
reckhorn D250
lavoce SSF102.50L (probably too expensive)
eventually, with much higher sensitivity, but also much higher f3:
monacor SP-10/250PRO
lavoce FBASS10-18
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I asked in post #2, what was the SPL expectation.
I assumed common amp power levels.
If not using tube amps, 100 to 150W is a power level commonly found in residences and studios.
With this power and 85dB sensitivity we get 105dB, which is a lot of pressure - much more than we can safely support for extended period.
So, that's why I prefer what is called today as "subwoofer" for bass in 3-way and not a woofer.
I use a 5" or 6" mid-bass for mid, crossing around 150 and 300Hz.
The idea is to propose the old style 3-way loudspeaker that doesn't need separate subwoofer.
I assumed common amp power levels.
If not using tube amps, 100 to 150W is a power level commonly found in residences and studios.
With this power and 85dB sensitivity we get 105dB, which is a lot of pressure - much more than we can safely support for extended period.
So, that's why I prefer what is called today as "subwoofer" for bass in 3-way and not a woofer.
I use a 5" or 6" mid-bass for mid, crossing around 150 and 300Hz.
The idea is to propose the old style 3-way loudspeaker that doesn't need separate subwoofer.