king (really) ! And to finish in beauty, here my decisive question before building the boxes / choosing the drivers :
Alright, I am now debating on the choices of the mid-range drivers. Regarding the fact that I'm interested only in the frequency range from 150Hz to 1Khz, which driver will sound louder in this range ? I'm curious how to do the calculations in advance instead of going to a shop. I know also that the sensitivity is per Watt, but I also know that most of the Watts are needed for the low frequencies (which I will not use in this case). No problems about the amplifier, it has much enough juice to power them both (I'm applying a limiter on my dsp in order to not burn the drivers)
- RCF MB12N351 - 12" Mid Bass 99 dB sensibility / 650W RMS
- RCF MR10N301 - 10" Sealed Basket 102 dB sensibility / 300W RMS
As don't plan to use the MB12N351 for bass frequencies, I still wanna figure out if they will sound louder in the midranges than the MR10N301. Hope I'm not too much off topic from the original post ^^
looks to me that midrange using an active 300Hz 4th order highpass, would handle 40 volts peak to hit its 1mm xmax. Can THAM12 work well to 200Hz?
btw, I had to fudge Vas vs the 2 liter published figure to get their mmd
The passive filter is "off" in the first and second pictures. "On" in the third where it gives a bit of "boost" from pulling
the impedance down. With that particular passive filter, the excursion is ~2.3mm @210Hz @40v input.
Which amplifiers are you going to use? I'm curious about battery power for a party.
btw, I had to fudge Vas vs the 2 liter published figure to get their mmd
The passive filter is "off" in the first and second pictures. "On" in the third where it gives a bit of "boost" from pulling
the impedance down. With that particular passive filter, the excursion is ~2.3mm @210Hz @40v input.
Which amplifiers are you going to use? I'm curious about battery power for a party.
Last edited:
looks to me that midrange using an active 300Hz 4th order highpass, would handle 40 volts peak to hit its 1mm xmax. Can THAM12 work well to 200Hz?
Pm for the amp Havent mention that I want to compare the MB12 in a sealed box, not in a THAM12
explain what you want compared and I'll try to simulate it.
You are right, Im not accurate enough. So I want to compare, at 600W power and between 150Hz and 1,5Khz frequency range :
1 x MB12N351 in a sealed enclosure with a volume of ~ 20 Liter
1 x MR10N301 with no enclosure (doesnt need it)
In a less technical way, I wanna know which one sounds louder giving the same juice.
the 10" is a bit louder - but at 600 watts nominal drive, its 1.4mm Xmax is exceded below ~500Hz when using a 4th order 160Hz highpass filter. The 12" woofer with 5.5mm spec is "ok" although that's a lot of cone movement. In practice Ik doubt if 600 watt peaks would be there but I'm ignorant as to PA work.and speakers in general. FWIW I think the 12" midbass looks better for this application.
(I thought its xmax was 1mm - still 1.4mm is hit around 400Hz)
maybe 2 less expensive speakers in parallel could outperform these (?)
(I thought its xmax was 1mm - still 1.4mm is hit around 400Hz)
maybe 2 less expensive speakers in parallel could outperform these (?)
Last edited:
Also, I was wondering : can i use the ROAR designs with a midbass driver and hope to cover the frequency range from 40Hz to 1Khz with only one enclosure / driver or it's too risky ?
I saw that THAM is not an option in this fashion, but the ROAR seems to be "linear in it's variations" from 300Hz. There is "only" this drop between 170Hz-250Hz that concerns me at my level
I saw that THAM is not an option in this fashion, but the ROAR seems to be "linear in it's variations" from 300Hz. There is "only" this drop between 170Hz-250Hz that concerns me at my level
Lastly, would it be possible to compare the RCF LF15N401 - 15" Woofer in a vented / bass reflex enclosure (with the volume giving the best SPL) vs a THAM15 ?
I really need to learn Hornresp !
I really need to learn Hornresp !
Hi again I answered myself and decided to stay for now with a vented enclosure and a 2 way system and with this design (even if I will build this THAM15 at some point !) : http://www.lean-business.co.uk/SPEAKER_PLANS/CIARE 15.00 SW DUAL REFLEX.pdf
Regarding the drivers, I hesitate between these two as the main goal is to get the most linear response from 40Hz to 800Hz :
RCF LF15N401 - 15" Woofer
RCF MB15N401 - 15" Mid Bass
Problem is Im getting 2 different sims when I design the enclosure on BassBoxPro and WinISD
freddi maybe you can help me this ? I wanna send 800W and don't know if I should listen to BassBox (and go with the MB15N401) or WinISD (and go with LF15N401 as the difference between the 2 drivers is not significant)
Thanks !
Regarding the drivers, I hesitate between these two as the main goal is to get the most linear response from 40Hz to 800Hz :
RCF LF15N401 - 15" Woofer
RCF MB15N401 - 15" Mid Bass
Problem is Im getting 2 different sims when I design the enclosure on BassBoxPro and WinISD
freddi maybe you can help me this ? I wanna send 800W and don't know if I should listen to BassBox (and go with the MB15N401) or WinISD (and go with LF15N401 as the difference between the 2 drivers is not significant)
Thanks !
Compare output levels at Xmax- comparing woofers and midrange drivers without considering the linear output won't give you much useful information.I wanna send 800W and don't know if I should listen to BassBox (and go with the MB15N401) or WinISD (and go with LF15N401 as the difference between the 2 drivers is not significant)
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Loudspeakers
- Subwoofers
- Ported Sub to Tapped Horn. Few questions before starting