Frequency: 39Hz - 150 Hz
Enclosure Type: Manifold
Size: 91.5x49x70cm
Recommended Driver: LF15G401 Spec Sheet
Plan: MN-238
Designer:
Discuss this article
Could this be built using 12's , and if so, what would the dimensions be?
Frequency: from 42Hz
Enclosure Type: Mini tapped Horn
Size: 68x34x57cm
Recommended Driver: PD.12SB30
Plan: MTH-30
.jpg)
Picture:
Designer:
Discuss this article
Hi guys.
I have recently bought a collection of used speakers, and amongst them was some MTH30 enclosures. Unloaded.
So i am thinking of loading these things and see what they can do. Would be a nice little set of bins for small gigs and stuff.
But what to load them with today?
PD 12SB30 is not an option anymore, so i need to find something else.
I have read that Beyma 12LX60V2 should be good. And they are relativly easy to obtain.
But are there any better options? 18sound, B&C, Beyma, PD, Fane and RCF are all easy for me to get here in Denmark.
I dont care so much about the list pricing, so dont take that into account.
Right now i only focus on sound quality and SPL
Kind regards - Frank
I have recently bought a collection of used speakers, and amongst them was some MTH30 enclosures. Unloaded.
So i am thinking of loading these things and see what they can do. Would be a nice little set of bins for small gigs and stuff.
But what to load them with today?
PD 12SB30 is not an option anymore, so i need to find something else.
I have read that Beyma 12LX60V2 should be good. And they are relativly easy to obtain.
But are there any better options? 18sound, B&C, Beyma, PD, Fane and RCF are all easy for me to get here in Denmark.
I dont care so much about the list pricing, so dont take that into account.
Right now i only focus on sound quality and SPL
Kind regards - Frank
Thanks a lot Brian this is an amazing contribution !!
giveortake wrote: Use this thread to discuss the MTH-30 design posted here .
Just in case anyone's interested, I've put together an Excel design spreadsheet that uses the MTH30's fold. You can modify the dimensions of each panel and also the rate of expansion, and the spreadsheet kicks out the corresponding HornResp parameters. To use the spreadsheet effectively, you need to ensure that any changes you make keep the "error" line in the horn expansion graph as close to zero as possible. Then just plug the parameters into HornResp to sim the results.
As shown, it suggests that two of the internal panels in the MTH30 plan might be a little short, about 1cm or so. I doubt that would make a noticeable difference to its output however.
fellamelad wrote: Hi i have built an MTH-30 using 18mm Ply and just sized up the cab by working out the internal measurements and working outwards if you know what i mean , in other words the whole cab is 6mm wider 12mm deeper and 9mm higher , i think that was right but i could just measure up the cab .
Hi i have built an MTH-30 using 18mm MDF and just sized up the cab by working out the internal measurements and working outwards if you know what i mean , in other words the whole cab is 6mm wider 12mm deeper and 9mm higher , i think that was right but i could just measure up the cab .
am up for the building test
my email is
jegeban@yahoo.com
thanks
my email is
jegeban@yahoo.com
thanks
I have drawn this up in Sketchup using 18mm board. If anyone is interested the file is in the 3d warehouse. I have not simulated, built or tested it. If you do, please share the results.
Hello,
I'm also looking for 18 mm plans, c'mon anyone?
I'm also looking for 18 mm plans, c'mon anyone?
Hi, I too would like to use 18mm ply, can anyone help with the measurements?
have anyone have a modify plan for the mth-30 in 18mm plywood where an at i cant find 15mm
thanks
thanks
Hi all,
I simmed the cab loaded with rcf mb12g301. I took care of the negative expansion created by the driver protruded into the horn mouth.
[attachment=1:380a5bpo]<!-- ia1 -->mth30sim.jpg<!-- ia1 -->[/attachment:380a5bpo]
seems that a kick isn't needed but don't drop so low, it's a 2pi placement btw.
So.... I put some dogleg like in the apache sub, loaded with same driver
[attachment=0:380a5bpo]<!-- ia0 -->apache12sim.jpg<!-- ia0 -->[/attachment:380a5bpo]
now it drops 10hz lower and is smaller. -10 cm tall -5 cm deep.
now it needs a proper kick section
I simmed the cab loaded with rcf mb12g301. I took care of the negative expansion created by the driver protruded into the horn mouth.
[attachment=1:380a5bpo]<!-- ia1 -->mth30sim.jpg<!-- ia1 -->[/attachment:380a5bpo]
seems that a kick isn't needed but don't drop so low, it's a 2pi placement btw.
So.... I put some dogleg like in the apache sub, loaded with same driver
[attachment=0:380a5bpo]<!-- ia0 -->apache12sim.jpg<!-- ia0 -->[/attachment:380a5bpo]
now it drops 10hz lower and is smaller. -10 cm tall -5 cm deep.
now it needs a proper kick section
We just build a MTH30, the only thing that is not finished is the paint , we will go for a latex one as this box is going to be on a fixed location on a pub and I need a different color than duratex.
Initial impressions:
-First and most important: This will be a very good first time build or if you have been a looong time out of woodworking smiley20 .
- For the size its very loud we were pretty amazed when you find the right spot and in this bar was a real pain.
- Clean bass this little beast will outperform most of the installs around the area.
- Only thing to check is be careful when using the PD Sb30 driver, if your using the 8 concealed holes be careful when punching them, use a big needle or whatever sharp object as you can damage the surround of the driver.
- And for gods sake dont use DM panel for mobile installs. We used it for the fixed but we dont want anyone moving this thinking is a chair.... :think:
The install consist in 8 LD coaxial boxes around the pub, sound was OK (after EQ) whitout the sub but the amps were working pretty hard at the most populated hours, so we decide for this sub and what a difference!, after running all the system thru a DSP processor and after test the MTH30, we were like :shock: , the amps were working at 20 or 30%?¿ hitting inside 80db (local law), and the SQ was very very nice.
Oh and some pics soon!
Big thanks to the designer and the Freespeakerplans users
Initial impressions:
-First and most important: This will be a very good first time build or if you have been a looong time out of woodworking smiley20 .
- For the size its very loud we were pretty amazed when you find the right spot and in this bar was a real pain.
- Clean bass this little beast will outperform most of the installs around the area.
- Only thing to check is be careful when using the PD Sb30 driver, if your using the 8 concealed holes be careful when punching them, use a big needle or whatever sharp object as you can damage the surround of the driver.
- And for gods sake dont use DM panel for mobile installs. We used it for the fixed but we dont want anyone moving this thinking is a chair.... :think:
The install consist in 8 LD coaxial boxes around the pub, sound was OK (after EQ) whitout the sub but the amps were working pretty hard at the most populated hours, so we decide for this sub and what a difference!, after running all the system thru a DSP processor and after test the MTH30, we were like :shock: , the amps were working at 20 or 30%?¿ hitting inside 80db (local law), and the SQ was very very nice.
Oh and some pics soon!
Big thanks to the designer and the Freespeakerplans users
Are the JBL 2206 and JBL 2204 speakers suitable for this cab as I have a number of these spare?Thanks
can i use this cabinet for B&C 12PZ32? plz i need help, im searching for perfect cabinet. ! ! ! !
i have tested this woofer
www.telecomenzi.ro/difuzor-blue- ... -2163.html
in MTH30, 2 bins. I would like to say that the SPL is way way way much bigger than a BR18" Cab ( i have tested side by side ). Even a single MTH had the SPL above the BR18".
Even with this very cheap driver, about 35-40E the SPL from 2 bins was more than u need, adleast more than i need...
For the future , i'm planing to buy Radian L12-8402 radian-tech.com/pdf/Radian%20L128402.pdf . I;m sure that this woofer is more apropriate for MTH and it will survive to many party's.
PS: the 18" BR is a 170L, tunned around 42hz and loaded with Paudio HP18S
www.telecomenzi.ro/difuzor-blue- ... -2163.html
in MTH30, 2 bins. I would like to say that the SPL is way way way much bigger than a BR18" Cab ( i have tested side by side ). Even a single MTH had the SPL above the BR18".
Even with this very cheap driver, about 35-40E the SPL from 2 bins was more than u need, adleast more than i need...
For the future , i'm planing to buy Radian L12-8402 radian-tech.com/pdf/Radian%20L128402.pdf . I;m sure that this woofer is more apropriate for MTH and it will survive to many party's.
PS: the 18" BR is a 170L, tunned around 42hz and loaded with Paudio HP18S
Oh, sorry, I've forgotted to say that i've not tested they at the same power :oops: .
Anyway, no, the difference was very small. Two mth can easily outperform the turbo smiley20 .
Giacomo. smiley1
Anyway, no, the difference was very small. Two mth can easily outperform the turbo smiley20 .
Giacomo. smiley1
i;ve seen in the specification of TQ 425
ftp://ftp.turbosound.com/datasheets/tq425.pdf
that it has 100 db at 1w.
U said that it was louder the Turbosound than the MTH, meaning that MTH does not have 100 Db /1w/1m ? :roll:
Later Edit: i;ve looked at the Sim and there , the subwoofer TQ has about 102 Db at 100hz, and at 130hz it has 103Db.. so it's understandeble why is louder. Anyways, it has 2 x 15" woofer, so.. a lot of air is pomped there... it;s normal to be louder. Was the difference in therms of SPL so big ? would u consider that 2 MTH 30, loaded with your RCF LF12G301 will leave behind this TQ Subwoofer from Turbosound ?
U said that it was louder the Turbosound than the MTH, meaning that MTH does not have 100 Db /1w/1m ? :roll:
Later Edit: i;ve looked at the Sim and there , the subwoofer TQ has about 102 Db at 100hz, and at 130hz it has 103Db.. so it's understandeble why is louder. Anyways, it has 2 x 15" woofer, so.. a lot of air is pomped there... it;s normal to be louder. Was the difference in therms of SPL so big ? would u consider that 2 MTH 30, loaded with your RCF LF12G301 will leave behind this TQ Subwoofer from Turbosound ?
I've a/b tested it with a turbosound TQ-425 (2x15") and the MTH-30 has more throw, but the turbo has more SPL in front of it. The bass extension is about the same.
Keep in mind that the mth is 450watts and the turbo is 800, and the mth is about 140liters and the turbo is about 260liters! smiley2
Giacomo. smiley1
Keep in mind that the mth is 450watts and the turbo is 800, and the mth is about 140liters and the turbo is about 260liters! smiley2
Giacomo. smiley1
What about directivity ? is it directive ? it's like a horn.. for example Planar wave horn or smth else...
@Giacomo have u tested side by side your MTH 30 with an 15" or 18" woofer ? If u did, what woofer was in the Bas Reflex bin ? How many liters ? thanx
@Giacomo have u tested side by side your MTH 30 with an 15" or 18" woofer ? If u did, what woofer was in the Bas Reflex bin ? How many liters ? thanx
I think the MTH-30 will have more SPL but is bigger than the Cubo 12. So the choice is:
-SPL but bigger (MTH-30);
-Smaller but less SPL (Cubo 12).
This is a personal opinion tho.
Giacomo. smiley1
-SPL but bigger (MTH-30);
-Smaller but less SPL (Cubo 12).
This is a personal opinion tho.
Giacomo. smiley1
i already talked to Cubo and he helped me choosing the woofer. I;m planing to use Selenium 12WS600 or Beyma 12LX60.
What woofer have u used in BR cab in the test and how many liters ?
Thanx for your answer mate ! smiley20
What woofer have u used in BR cab in the test and how many liters ?
Thanx for your answer mate ! smiley20
goldwood's. yes a/b tested. leaves most single 18" bass reflex in the dust. there is no cubo 12 or mth 30 showdown. the mth30 was designed for a certain driver, and a few others work in it. the cubo was designed to accept a wide range of drivers, ask the designer about what drivers you plan on using and he will help you out.
4 cabs MTH 30 with what loudspeaker ? Pd 12DB30 ?
Have u compared 1 by 1 with an 18" BR speaker ? If u did, with what 18" woofer ?
thanx
Have u compared 1 by 1 with an 18" BR speaker ? If u did, with what 18" woofer ?
thanx
Frequency:
from 35Hz
Enclosure Type: Hybrid
Size: 60x96x75cm
Recommended Driver: LF18N401 Spec Sheet
Plan: MHB-46 Rev CII
Pictures:
Designer:
Discuss this article
Hi guyz,.....is it posible to build a 15 inch versión.....any plans...sims?? 
If you remove the port, it will change the performance and frequency response. It will make noise, but it will change the design's cone control and frequency response. I would say choose a sealed FLH design instead, which has already been tested and proven to function properly.
Hi! can I make it unported? Will it be like a typical front loaded horn, or do you have to compensate for the extra chamber volume unoccupied by the slot port added in ?
thanks
thanks
got to build 2 of these for an art studio ..an these thing really play nice an warm ....heart pound bass with just 2 emmy omega pro A
finish with double 10 and horn
if u look in side i try them home with 2 celestion frt 4080 before i took them to the art studio an in stall the omega pro
finish with double 10 and horn
if u look in side i try them home with 2 celestion frt 4080 before i took them to the art studio an in stall the omega pro
Do i need to damp the inside(wadding)?If so what are the advantages of dampening it?Thanks!
Somehow missed that post...
Thanks though!
Update:
Nice and easy to use program, thanks for the tip!
I get 7 sheets for 4 MHB-46 anybody can verify this?
Thanks though!
Update:
Nice and easy to use program, thanks for the tip!
I get 7 sheets for 4 MHB-46 anybody can verify this?
Oke I want to start building these, as my ES18BPH's are a disapointment.
Anybody got a cutsheet for the MHB-46?
How many sheets of ply would I need to build four?
Anybody got a cutsheet for the MHB-46?
How many sheets of ply would I need to build four?
ill double check m8t, cant remember off hand.... ill take a look over the weekend
bee, did you set the port distance from ground?
jerronimo wrote: Does anybody have the cutsheet for this design?
I calculated the amount of ply for one, and I get 2 sheets with alot of waste.
How many sheets would I need to build 4?
download maxcut version2 its free to use, and is one of the best cut sheet design software there is (i think)....... link below
www.maxcut.co.za/
Does anybody have the cutsheet for this design?
I calculated the amount of ply for one, and I get 2 sheets with alot of waste.
How many sheets would I need to build 4?
I calculated the amount of ply for one, and I get 2 sheets with alot of waste.
How many sheets would I need to build 4?
just an update,
plott 1 below is marcs sim plott using the rcf lf18n401
plott 2 below is my attempt at siming this cab using the rcf lf18n401 using akabak
plott 3 below is my attempt at siming this cab using the Selenium 18ws600 for kenwood, again using akabak,
plott 1 below is marcs sim plott using the rcf lf18n401
plott 2 below is my attempt at siming this cab using the rcf lf18n401 using akabak
plott 3 below is my attempt at siming this cab using the Selenium 18ws600 for kenwood, again using akabak,
ok i have found out why you cant sim it....... has anyone else spotted the mistake.........
kentech has got one of the parameters set to AP1......... when it should be AP.........
change ap1 to ap, it should work ok now.......
ps... if my post seem like im rambling, sorry. Im helping out via pm's.... but thought this info may help others.........
kentech has got one of the parameters set to AP1......... when it should be AP.........
change ap1 to ap, it should work ok now.......
ps... if my post seem like im rambling, sorry. Im helping out via pm's.... but thought this info may help others.........
re-pm...... So, i must do " Calculate" and after that , tools-combined response, but it is not active.. it;s not highlighted.. How should i do the plot ? please tell me the steps, thanx a lot !
input all the info on the main screen,
press calculate
press yes
go to tools,
select combined responce,
press ok.....
you should have the same plott as mine, is using my info posted above.....
hope this helps.......
input all the info on the main screen,
press calculate
press yes
go to tools,
select combined responce,
press ok.....
you should have the same plott as mine, is using my info posted above.....
hope this helps.......
when u press calculate, you need to go to tools, and press combined responce, then click enter, dont add a value when it ask's.......
my sim and plott is below,
my sim and plott is below,
hear is mykeys sim, my sim, and your sim........ all with your driver.
hope this helps......
hope this helps......
can u make a print screen of your input data for MHB46 ?
This is my input data:
SPL response with Selenium 18ws600
This is my input data:
SPL response with Selenium 18ws600
this is a very quick sim in horn resp showing the plott i came up with, using the same driver in your sim.
are you pressing the combined sim button!!!!!
this was done by using the sim mykey made, with a few changes it......
are you pressing the combined sim button!!!!!
this was done by using the sim mykey made, with a few changes it......
the results persists. Very bad grapfic plot.... i don;t hink that this are the real data input for hornresp for this MHB46
ive not simmed this one, your sim looks very differant to mykeys,
S1 799.2
S2 800 con 33,70
S3 1443 con 17.20
S4 3141 con 59.30
VRC 139.20
LRC 29
AP 326.20
LPT 18
VTC 8400
ATC 1400
S1 799.2
S2 800 con 33,70
S3 1443 con 17.20
S4 3141 con 59.30
VRC 139.20
LRC 29
AP 326.20
LPT 18
VTC 8400
ATC 1400
Is this Data input for Hornresp for MHB46 ok ? Because the SPL response is catastrofal...JJD wrote: as it has been said in the post, I think the start of the horn is in front of the speaker, so the model will be like this:
i just need two of these boxes,to a function an i'm good
the MBH-46 seems very popular in France. It make a very strong kick in thorax, and like no other bass bin. Bass response is 50Hz in solo, with linear curve (no need of multiples bins like some horns).
.jpg)
Frequency: 30-120hz
Enclosure Type: Reflex
Size : 48"x28"x22"
Recommended Drivers: LF18N451 Spec Sheet and PD1850
Plan: SOS-218sub
Designer:
Comments from designer: Hi everybody, Hey this is prashant from India. I am a sound engg student in Mumbai.
I have made some speaker design; also I have made a NEW Dual 18” folded horn speaker cabinet.
After completed R&D we have give it to 54 Hirer for testing purpose. When they connected In open Air, Sound (punch)
comes near very hard & long soft tone. They played 12hr continually there was no problem found. I have used in
inside enclosure 2 x RCF LF18N451-1500watts RMS. & also used 2 x PD1850. If u wants this design
so please mail me:-
don’t hesitate & feel free to ask. We are always there for you. Thanks, Prashant.
Discuss this article
Has anyone built these recently? Interested to know how they went.
Also any other drivers anyone could recommend for them?
Also any other drivers anyone could recommend for them?
saves friend via coincidence where CV AB36 get up to so much trouble if not I am from Venezuela to manufacture these Serwin vega ab box 36 and which is not the original measure for this lightbox
Hello Sir!!I would like to view this entire 18" folded-horn plan. i am interested in building this speaker plan for myself. I like the design. Do you have a single 18" folded-horn plan style I may view as well.Respectfully,chuckster
Why not post the dual-18"-folded-horn-plan here for discussion!? smiley1
my new e-mail id is sosaudiosys@gmail.com and lovhelp@gmail.com
Looks like a PWG to me... the bit infront of the drivers is probably more of a chamber than a horn.
iiinteresting!!
A dual ported horn... not see anything quite like that before, i suppose a ported W-bin is similer in actual design theory... but still... very interesting
Any plots been made yet?
A dual ported horn... not see anything quite like that before, i suppose a ported W-bin is similer in actual design theory... but still... very interesting
Any plots been made yet?
Frequency: 54 to 250Hz
Enclosure Type: Bandpass Horn
Size: 670x600x750mm
Recommended Drivers: SD18 or C18-650EL
Plan:
Designer: Stipe Ercegovic (
Discuss this article
got my hand on 2 B&C tbx100 thinking about trying to build 2 of these ES18BPH cabinets will they work good in them
Does anyone have any feedback on RCF LF18G401 in these cabs? Thanks Chris
How many sheets are needed to make 2 cabs? And where is best to place the handles on this cab?
Many thanks
Many thanks
Budget is around 1500SEK (114£) /Element
But still wonder is i can use the EBP to find suitable elements?
But still wonder is i can use the EBP to find suitable elements?
whats your budget per driver, I stock or can get bms, pd, fane, celestion, eminence, to name a few.. based on your budget im happy to recommend a driver...
I´m looking for cheaper drivers for this cab.
Can i search drivers via EBP?
The SD18 has a EBP of 126,9
and C18-650EL has a EBP of 88.5. (FS/Qts=EBP)
If i find drivers with EBP close to those EBP values, would it work OK in the ES18-BPH?
Can i search drivers via EBP?
The SD18 has a EBP of 126,9
and C18-650EL has a EBP of 88.5. (FS/Qts=EBP)
If i find drivers with EBP close to those EBP values, would it work OK in the ES18-BPH?
reply in other thread.... yes the mk2 has a bigger wider magnet... so wont fit in the es18, the only option I see is for you to make a shim (spacer) for the baffle to bring the driver back into the chamber.
Did the dimensions for the c18-650el v2 change from the original? The speaker magnet hits the rear and bottom panel not letting it sit flush. I triple checked my measurements and they're good.
Is there a cheaper driver thats work well in this horn?
I can´t afford 4 SD18 & c18...
I can´t afford 4 SD18 & c18...
I wasn't trying to participate in the discussion about this particular plan, but did want to look at it. When I tried to use the link posted I got this:
"This Connection is Untrusted
You have asked Firefox to connect securely to www.freespeakerplans.com , but we can't confirm that your connection is secure.
Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified.
What Should I Do?
If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue."
I normally do not see this error, but started to presume it was safe because it is here at Freespeakerplans. It then gave me another warning when I attempted to allow it and proceed:
"If you understand what's going on, you can tell Firefox to start trusting this site's identification. Even if you trust the site, this error could mean that someone is tampering with your connection.
Don't add an exception unless you know there's a good reason why this site doesn't use trusted identification."
I then decided to wait until I mentioned this to you guys before proceeding at all. This may be normal due to how it is hosted....but then I have looked at a lot of plans here and not encountered this. I wasn't sure how to approach it but did feel it would be irresponsible not to mention it..even if it turns out to be something laughable I should have known about! In this case I would rather even be laughed at then not to have informed the group when I should have!
"This Connection is Untrusted
You have asked Firefox to connect securely to www.freespeakerplans.com , but we can't confirm that your connection is secure.
Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified.
What Should I Do?
If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue."
I normally do not see this error, but started to presume it was safe because it is here at Freespeakerplans. It then gave me another warning when I attempted to allow it and proceed:
"If you understand what's going on, you can tell Firefox to start trusting this site's identification. Even if you trust the site, this error could mean that someone is tampering with your connection.
Don't add an exception unless you know there's a good reason why this site doesn't use trusted identification."
I then decided to wait until I mentioned this to you guys before proceeding at all. This may be normal due to how it is hosted....but then I have looked at a lot of plans here and not encountered this. I wasn't sure how to approach it but did feel it would be irresponsible not to mention it..even if it turns out to be something laughable I should have known about! In this case I would rather even be laughed at then not to have informed the group when I should have!
hi all i want to build these as kicks above my x1 subs but need to cut my suit according to my cloth so was wondering if i could use either the emminence sigma pro delta pro or omega pro in this cab aiming to build a pair to begin with then another pair later along withnother pair of x1 and two pairs of MT122 will it work?
hi everybody,
do you think a pd 1850 would work as well? i want to use them as kick cabinet.
i don't know how can the bottom braces can fix. i mean that them crash with panel B. how did you overcome this?
thanks
do you think a pd 1850 would work as well? i want to use them as kick cabinet.
i don't know how can the bottom braces can fix. i mean that them crash with panel B. how did you overcome this?
thanks
Yes you will need to reverse the polarity as your speaker will need to fire backwards
In using this cab should i invert the polarity?
Can RCF LF18G401 is suitable for it if magnet side put in the chamber?
big brace distance from baffle in akabak sintax
sin(rad(40))*(paneljheight-(1/sin(rad(40))*woodthickness+7.7e-2+bigbraceheight+woodthickness))
sin(rad(40))*(paneljheight-(1/sin(rad(40))*woodthickness+7.7e-2+bigbraceheight+woodthickness))
no bitzo!
i'd like to say how deep the speaker basket could be!
i'd like to say how deep the speaker basket could be!
encreasing depth without any other mods means enlarging compression chamber and throat... so means encreasing low end or gain some db on low bandwith part and may be loose high end extension. Mr. Stipe cabs make always discuss about them, I like it. smiley20
hiany one know how deep could be the speaker at maximum?
does anyone have plans for 21 inch speakers on this cab
levyte357 wrote: Can anyone "guess-etimate" the response of this cab, if depth is reduced to 636mmm?
I expect shortening horn, and reducing chamber will reduce low end response, will it still reach downto usable 65hz?
More importantly, will upper response be extended?
Yes for pure kick bin that can be done..
Sacrifice is a bit shorter horn which will take away bit of low extension but 65 Hz will still be in good efficiency range.
I have already made slight simple modification for Electrikal to make "face" of cabinet 636 x 636 mm which will make it more flexible for stacking in various combination's with HOG-s and other 636mm wide scoops.
now I see ..according to some inditions and informations from Sherlock Holmes you already know that smiley2
.. Have to make some sims to see what upper response with trimmed depth from 750 to ~670 will do.. But that can give us just idea as final "character" and "honk/no honk" in delicate low vocal area is impossible to simulate.
In this situation (when you look for better high cutoff) additional Neilpoints modification ( forum.speakerplans.com/forum_posts.asp?T...title=es18bph#470523 ) may be good idea to do.
thing is with 3 or 4 next to each other, the whole lot actually gets deeper than 668mm
saul wrote: if you draw a vertical line around 110mm from the front of the cab, yeah i guess lose mouth area horn length and chamber.
horn length is currently 75cm in theory - this is only 110hz @ 1/4 wave
so the rest is the chambers?
just wondering though, why?
Why reducing depth?
Cube shape kick.. Aesthetics.
But just realised MT121 is approx 668mm deep, so "my" ES18 would have to be at least this as well.
if you draw a vertical line around 110mm from the front of the cab, yeah i guess lose mouth area horn length and chamber.
horn length is currently 75cm in theory - this is only 110hz @ 1/4 wave
so the rest is the chambers?
just wondering though, why?
horn length is currently 75cm in theory - this is only 110hz @ 1/4 wave
so the rest is the chambers?
just wondering though, why?