Hello all,
I made some years ago a tower speaker with a side woofer. The woofer (SAL SRP2530 - Kevlar membrane ) is working more like a subwoofer an is cut at ~140Hz.
The tweeter is BS26ADC-C000-4 and for the mid I use Alpha-6A. Crossover frequency are 140Hz and 1600Hz. It is a ported box and I measured -6db@45Hz and -10db@37Hz. The woofer box is ~37L without speaker.
There is a better woofer/subwoofer to work in this box and to not be expensive? Preferable to be available in Europe.
I made some years ago a tower speaker with a side woofer. The woofer (SAL SRP2530 - Kevlar membrane ) is working more like a subwoofer an is cut at ~140Hz.
The tweeter is BS26ADC-C000-4 and for the mid I use Alpha-6A. Crossover frequency are 140Hz and 1600Hz. It is a ported box and I measured -6db@45Hz and -10db@37Hz. The woofer box is ~37L without speaker.
There is a better woofer/subwoofer to work in this box and to not be expensive? Preferable to be available in Europe.
So, no one can suggest a better 10" subwoofer driver that are suitable for 35-37 liter ported box?
I think that a car subwoofer would be more suitable, but I can't find data about the ones I have access to.
https://speakerboxlite.com
Select design box->
choose “Choice” (software will make a Choice for you)
Click on “Filter” and select 10; for 10” woofers only.
Select “Box” and choose between “Closed, vented or 4th order Band-pass”
Under Vb (volume of box) type in “37”
Select alignment eg. “max flat amplitude Butterworth B2”
Then select Result.
You will get 48 hits…
The website also exists as a phone app.
Select design box->
choose “Choice” (software will make a Choice for you)
Click on “Filter” and select 10; for 10” woofers only.
Select “Box” and choose between “Closed, vented or 4th order Band-pass”
Under Vb (volume of box) type in “37”
Select alignment eg. “max flat amplitude Butterworth B2”
Then select Result.
You will get 48 hits…
The website also exists as a phone app.
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What do you think about this speaker: https://hertz-audio.com/product/car-audio-subwoofers-dieci-ds25-3/
It's Qt is much too high for a small cab, i.e. a ~OB driver, so to the 1st approximation; a 45 Hz Fs, ~0.403 Qts', 37 L x 1.44 = ~53.3 L Vas or specs that = Vb = ~37 L using this formula: 20*Vas*Qts'^3.3
(Qts'): (Qts) + any added series resistance (Rs): http://www.mh-audio.nl/Calculators/newqts.html
(Rs) = 0.5 ohm minimum for wiring, so may be higher if a super small gauge is used as a series resistor and/or there's other series resistance.
edit: Wasn't aware of speakerboxlite having a reverse designer, but my limited experience trying it out for accuracy left me not wanting to use/recommend it and emails to report my findings/queries to date have gone unanswered, 'nailing this coffin shut'. 🙁
(Qts'): (Qts) + any added series resistance (Rs): http://www.mh-audio.nl/Calculators/newqts.html
(Rs) = 0.5 ohm minimum for wiring, so may be higher if a super small gauge is used as a series resistor and/or there's other series resistance.
edit: Wasn't aware of speakerboxlite having a reverse designer, but my limited experience trying it out for accuracy left me not wanting to use/recommend it and emails to report my findings/queries to date have gone unanswered, 'nailing this coffin shut'. 🙁
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The problem is that more suitable speakers or are not available in my area or even too expensive.
Because of this I do not search necessary for the best solutions, a working solutions is enough.
In the meantime, I noticed that the MTZ is not physically available either, although it appeared available on the websites, when I called I found out that it is not even available at the distributors.
So, reset and start again.
I am still open to suggestions.
Because of this I do not search necessary for the best solutions, a working solutions is enough.
In the meantime, I noticed that the MTZ is not physically available either, although it appeared available on the websites, when I called I found out that it is not even available at the distributors.
So, reset and start again.
I am still open to suggestions.
Then best to use the math to 'test' what is available within your budget and choose the one(s) that comes closest overall WRT 37 L, 45 Hz Fb and post your results so we can sim, suggest any tweaks to minimize performance differences.
Big problem is that I find in online shop and when I call are not available, so I need to check a lot of variants and need time.
Soo..... the only solution is to buy a 200E+ speaker?!?
I was expected to be here more peoples that can help but it seems that is not an interested topic for most of the people.
I received and tested with Hertz CS250 S4. The minimum frequency is lower but I need to reduce level on the rest of the drivers (mid and tweeter) and I do not like this.
There are better solutions in less than 100E per driver (or close to)?
I was expected to be here more peoples that can help but it seems that is not an interested topic for most of the people.
I received and tested with Hertz CS250 S4. The minimum frequency is lower but I need to reduce level on the rest of the drivers (mid and tweeter) and I do not like this.
There are better solutions in less than 100E per driver (or close to)?
A 350E+ driver, also 10inci, has according to datasheet, over 92db SPL in half of volume at the same frequency (30-35Hz). The problem is the price and the dimension (installation depth) but for that you also get a very high power, over 500W. I need only 100W.
With the speaker I tested, I obtained an almost linear extension up to 28Hz and only then does it start to decrease. On the entire band played by the speaker, the sensitivity is lower by 3-5db.
So theoretically it is possible without breaking the laws of physics, I just need a more sensible speaker.
With the speaker I tested, I obtained an almost linear extension up to 28Hz and only then does it start to decrease. On the entire band played by the speaker, the sensitivity is lower by 3-5db.
So theoretically it is possible without breaking the laws of physics, I just need a more sensible speaker.
Yeah, I tend to be a 'broken record' re speaker box design is all about trading efficiency for BW. 🙁
It didn't drop much because it's a high Qt driver = lower efficiency.
n0 and SPL rating – Efficiency
no is a percentage, showing how efficient the driver is at converting an electrical signal to an acoustical one. As a result, the bigger the number, the greater the reference sound pressure level.
n0 = (9.7822 * 10-10 * Vas * Fs3) / Qes
n0 above is a ratio, not a percentage. To make it a percentage multiply by 100.
Vas is in liters.
Fs in Hz.
SPL @ 1W/1m = 112.2 + 10 * log(n0)
The SPL rating is in direct proportion to n0. Important to note is that the efficiency coefficient (n0) is highly dependent to the resonant frequency, because it’s at the power of 3. In conclusion, tweeters and mid-range drivers will be more efficient versus subwoofers.