I was just wondering if the MTX 942 has An ssf on it? Also how do you know if an amp does have one or not,what else would it be called? I also the found the specs for my sub on the Cadence website-http://www.cadencestore.com/ProductCart/pc/caraudio_detail.asp?idcategory=105&idproduct=289
Replies (17)
Ash on 07/20/2006 18:43:08
Unfortunately I don't believe this amp has one, in fact I don't know of many MTX amps if at all that have one. If an amp has one it should simply state in on the control panel along with a switch and/or adjustable dial.
I take it that you are running a ported box. There are ways to add one to your amp if needed. The cheapest would be a pair of hi-pass FMods at the desired frequency. Others would be some type of signal processor that includes one which would be more effective, yet a bit pricier.
tpx on 07/20/2006 21:38:55
Yes I am running a ported box, gonna be tuned to 40hz.The reason I asked about different names for the SSf is because i was looking at thr Orion amps and in a description of the amp it said it had some kind of dial for sub sonic frequencies but it wasn't called a sub sonic filter.As of my last post I'm still searching for an amp.I'm gonna go with a 2 channel unless I find a great deal on a monoblock that has the right amount of rms at 4ohms.I don't know if it helps any Ash but I have the Soundstorm ssx200 crossover,I don't know if this as anything that can be used as a SSF or not.
Ash on 07/21/2006 18:54:26
No that crossover doesn't have one either. I do believe Orion amps do depending on the model. What sub are you running? That way I might can point you in the right direction.
swez on 07/21/2006 19:15:35
Parts Express carries a line of products of various filters from Harrison Labs that should do the job, no matter what amp you use. They are RCA modules with integrated filters that fit between the Source RCA's and the amp inputs. Have a look at these: (30 Hz. fixed)
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=266-248
I have noticed that many newer amps offer either a variable "Infrasonic" filters (SSF) or a fixed one that blocks frequencies below about 25 Hz. If you tune your box to just a tab below 40 Hz., (35 Hz.), this filter is a good match and your subs will be fine.
Swez
tpx on 07/22/2006 01:11:55
Thanks Swez and Ash.Ash, that sub is the new Cadence Triple X.I have the link above in the first paragraph if you wanna check it out.I think I'm gonna purchase those Fmods you mentioned Swez that seems like a good deal.This is the part I hate about building a good system,choosing the amp.I know about pretty much all the good brands and the brands to stay away from it's just that I've never got to see some of the products perform myself or know anybody that has tried them.I just want to know all the possibilities for this particular setup and get the best bang for my buck at the same time.
swez on 07/22/2006 11:19:51
Understood there TPX. This is a very strong SPL sub. If you go ported, consider dropping the port tuning frequency to 30-35 Hz.
http://www.cadencestore.com/ProductCart/pc/caraudio_detail.asp?idcategory=105&idproduct=289
Did you get recommended enclosure specs with this sub from Cadence? The web site does not offer much detail on this sub yet.
It would be best to buy a good Class D Mono amp (800 -1,000 watts RMS @ 2 ohms) that already has an Infrasonic filter in the amp. If not, the F-Mods option will work out well.
Swez
Ash on 07/22/2006 14:04:26
I was able to pull up the specs on it yesterday and now it is a invalid link. Too bad I didn't log it into WIN ISD like I normally do.
I do specifically remember it being tuned kinda high (40-45hz). Strictly SPL design, but it doesnt' have to be that way. You can go with a larger box with a lower tuning at the sacrifice of power handling, which might not be a bad idea since a mono block of power level along with features will cost a pretty penny.
http://www.cardomain.com/item/ORI47510
swez on 07/22/2006 14:28:31
Yikes, that Orion is a HC version amp. (High Current, Class A/B topology) Not only will it do 1 ohm loads, but will grab a lot of current too.
Kenwood makes a few dual channel Class D amps that should fit the bill. I think the model # is KAC-9152D. This amp puts out 900 watts RMS @ 2 ohms when both amp haves are strapped together and only draws about 60A's.
http://www.sonicelectronix.com/viewitem.php?id=4351
http://www.onlinecarstereo.com/CarAudio/ProductDetail.aspx?ProductID=14934
Swez
Ash on 07/22/2006 17:57:55
Agreed! I don't think you will want to be considering Orion with the draw and cost. That is pretty ridiculous, but then again I ain't that young anymore either.
tpx on 07/23/2006 02:45:08
I just thought of another critical question.On the MTX 942 and some other high end brands I noticed there were no fuses on the amp.How is this possible?Swez what did you mean when you said "both amp halves strapped together?"
swez on 07/23/2006 13:49:56
This is a very strong and power hungry Class A/B, 2 channel amp. It does need and external fuse off the power cable, 1/0 gage wiring, 150A main fuse at BAT and 150A fuse near amp. You'll need a pair of heavy duty ANL fuses to use this amp and expensive electrical upgrades too.
Manual for the T-942 amp:
http://www.mtx.com/caraudio/products/manualsQuickInstall/amps/Thunder_342_502_942.pdf
That Kenwood amp noted, is a "Dual MONO Drive" amp. It can be bridged externally to give one very strong Class D MONO amp. This amp draws considerably less current, (60A max) vs the mentioned MTX T-942. (150A max) You can do the math...
Manual:
http://www.kenwoodusa.com/languages/US/support/manuals/OM-KAC-9152D-2005-KUSA.pdf (Pages 4-6 have all the wiring details)
Read it carefully please!
Swez
tpx on 07/24/2006 01:11:47
What about the Alpine you recommended in that other topic I think the MRD-M605, what doyou think out of the Alpine, the Kenwood or the Power Acoustik?I know PA is not top of the line but I've heard and read all good reviews sofar,and it is 800 some watts rms x1.Thanks!
swez on 07/24/2006 10:17:38
With this sub, you'll want a strong Class D amp that can handle 1 ohm loads.
That Alpine AMP will not cut it. IT CANNOT HANDLE 1 OHM LOADS SAFELY.
That P/A amp is a 2 channel, Class A/B amp. It will deliver enough RMS power when bridged MONO and the sub coils wired in series, for a 4 ohm load. However, the current draw is about 33% higher than the Kenwood Class D amp mentioned and is 1 ohm stable.
Your best bet of the 3 amps mentioned, is the Kenwood KAC-9152D.
Swez
tpx on 07/24/2006 12:43:05
I forgot to tell you but I plan on running it at 4 ohms thats why I wanted to get your opinion on the Alpine and the P/A.I'm scared of wasting money on an amp that claims it can do a 1 ohm load and after I buy it and hook it up only to find out it can't.I am actually considering going with a Mmats amp but for 1 ohm but am really unsure because of the price.
swez on 07/24/2006 20:14:28
If you want to run this sub at 4 ohms, bite the bullet and get a JL 1000/1 Mono amp. This is an excellent amp and if you shop it hard, it can be had for a reasonable price.
As a fall back, the JL 500/1 is also very solid, cost less and only 3dB less SPL as compared to the 1000/1. Both are practically bullet proof when one follows the install manual guidelines.
www.jlaudio.com
Swez
tpx on 07/27/2006 18:01:56
Hey Swez,I got it narrowed down.The Soundstream xt880.2 or Phoenix Gold X600.1.I can get these amps for roughly the same price. PG-class d,600 wrms @1-4ohms,ss filter (alot of reviews said it bench tested at around 820 wrms) Soundstream-more power,I like the design(can't find anywhere if it has a ss Filter).Please give me your opinion on these two and let me know what you would personally run out of these two and the Kenwood 9152D you've mentioned earlier in this topic.
swez on 07/27/2006 19:20:51
The PG X600.1 will net a solid +600 watts RMS at loads between 1 - 4 ohms. It does have a variable SSF. Here is a link with additional details on this amp:
http://www.cardomain.com/item/PHOX6001
FYI: They are not the lowest priced Kids on the block, but if you can show them a verifiable price and meet their price matching criteria, they will give you a discount coupon for 105% of the original sellers price. Check your site prices VS Car Domain and see what they say.
This amp has some of the same type features as the JL Slash series. It is fused at 60A's and very efficient for the power output it can offer. It also has a variable speed cooling fan.
Even though the sub can handle more power, the audible difference will be minimal between 600 vs 900 watts RMS that sub can handle. (1.5dB more SPL)
Also, the SS XTA880.2 is a Class A/B (full range or sub) amplifier. This amp is likely to draw over 100A's at full power. That's a lot of lost watts to heat.
Knowing all that, I recommend the PG X600.1 as your best overall amp for this application. It will be a whole lot more friendly to your car electricals, yet give plenty of power to that sub wired at 4 ohms.
Swez
Replies (17)
Ash on 07/20/2006 18:43:08
Unfortunately I don't believe this amp has one, in fact I don't know of many MTX amps if at all that have one. If an amp has one it should simply state in on the control panel along with a switch and/or adjustable dial.
I take it that you are running a ported box. There are ways to add one to your amp if needed. The cheapest would be a pair of hi-pass FMods at the desired frequency. Others would be some type of signal processor that includes one which would be more effective, yet a bit pricier.
tpx on 07/20/2006 21:38:55
Yes I am running a ported box, gonna be tuned to 40hz.The reason I asked about different names for the SSf is because i was looking at thr Orion amps and in a description of the amp it said it had some kind of dial for sub sonic frequencies but it wasn't called a sub sonic filter.As of my last post I'm still searching for an amp.I'm gonna go with a 2 channel unless I find a great deal on a monoblock that has the right amount of rms at 4ohms.I don't know if it helps any Ash but I have the Soundstorm ssx200 crossover,I don't know if this as anything that can be used as a SSF or not.
Ash on 07/21/2006 18:54:26
No that crossover doesn't have one either. I do believe Orion amps do depending on the model. What sub are you running? That way I might can point you in the right direction.
swez on 07/21/2006 19:15:35
Parts Express carries a line of products of various filters from Harrison Labs that should do the job, no matter what amp you use. They are RCA modules with integrated filters that fit between the Source RCA's and the amp inputs. Have a look at these: (30 Hz. fixed)
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=266-248
I have noticed that many newer amps offer either a variable "Infrasonic" filters (SSF) or a fixed one that blocks frequencies below about 25 Hz. If you tune your box to just a tab below 40 Hz., (35 Hz.), this filter is a good match and your subs will be fine.
Swez
tpx on 07/22/2006 01:11:55
Thanks Swez and Ash.Ash, that sub is the new Cadence Triple X.I have the link above in the first paragraph if you wanna check it out.I think I'm gonna purchase those Fmods you mentioned Swez that seems like a good deal.This is the part I hate about building a good system,choosing the amp.I know about pretty much all the good brands and the brands to stay away from it's just that I've never got to see some of the products perform myself or know anybody that has tried them.I just want to know all the possibilities for this particular setup and get the best bang for my buck at the same time.
swez on 07/22/2006 11:19:51
Understood there TPX. This is a very strong SPL sub. If you go ported, consider dropping the port tuning frequency to 30-35 Hz.
http://www.cadencestore.com/ProductCart/pc/caraudio_detail.asp?idcategory=105&idproduct=289
Did you get recommended enclosure specs with this sub from Cadence? The web site does not offer much detail on this sub yet.
It would be best to buy a good Class D Mono amp (800 -1,000 watts RMS @ 2 ohms) that already has an Infrasonic filter in the amp. If not, the F-Mods option will work out well.
Swez
Ash on 07/22/2006 14:04:26
I was able to pull up the specs on it yesterday and now it is a invalid link. Too bad I didn't log it into WIN ISD like I normally do.
I do specifically remember it being tuned kinda high (40-45hz). Strictly SPL design, but it doesnt' have to be that way. You can go with a larger box with a lower tuning at the sacrifice of power handling, which might not be a bad idea since a mono block of power level along with features will cost a pretty penny.
http://www.cardomain.com/item/ORI47510
swez on 07/22/2006 14:28:31
Yikes, that Orion is a HC version amp. (High Current, Class A/B topology) Not only will it do 1 ohm loads, but will grab a lot of current too.
Kenwood makes a few dual channel Class D amps that should fit the bill. I think the model # is KAC-9152D. This amp puts out 900 watts RMS @ 2 ohms when both amp haves are strapped together and only draws about 60A's.
http://www.sonicelectronix.com/viewitem.php?id=4351
http://www.onlinecarstereo.com/CarAudio/ProductDetail.aspx?ProductID=14934
Swez
Ash on 07/22/2006 17:57:55
Agreed! I don't think you will want to be considering Orion with the draw and cost. That is pretty ridiculous, but then again I ain't that young anymore either.
tpx on 07/23/2006 02:45:08
I just thought of another critical question.On the MTX 942 and some other high end brands I noticed there were no fuses on the amp.How is this possible?Swez what did you mean when you said "both amp halves strapped together?"
swez on 07/23/2006 13:49:56
This is a very strong and power hungry Class A/B, 2 channel amp. It does need and external fuse off the power cable, 1/0 gage wiring, 150A main fuse at BAT and 150A fuse near amp. You'll need a pair of heavy duty ANL fuses to use this amp and expensive electrical upgrades too.
Manual for the T-942 amp:
http://www.mtx.com/caraudio/products/manualsQuickInstall/amps/Thunder_342_502_942.pdf
That Kenwood amp noted, is a "Dual MONO Drive" amp. It can be bridged externally to give one very strong Class D MONO amp. This amp draws considerably less current, (60A max) vs the mentioned MTX T-942. (150A max) You can do the math...
Manual:
http://www.kenwoodusa.com/languages/US/support/manuals/OM-KAC-9152D-2005-KUSA.pdf (Pages 4-6 have all the wiring details)
Read it carefully please!
Swez
tpx on 07/24/2006 01:11:47
What about the Alpine you recommended in that other topic I think the MRD-M605, what doyou think out of the Alpine, the Kenwood or the Power Acoustik?I know PA is not top of the line but I've heard and read all good reviews sofar,and it is 800 some watts rms x1.Thanks!
swez on 07/24/2006 10:17:38
With this sub, you'll want a strong Class D amp that can handle 1 ohm loads.
That Alpine AMP will not cut it. IT CANNOT HANDLE 1 OHM LOADS SAFELY.
That P/A amp is a 2 channel, Class A/B amp. It will deliver enough RMS power when bridged MONO and the sub coils wired in series, for a 4 ohm load. However, the current draw is about 33% higher than the Kenwood Class D amp mentioned and is 1 ohm stable.
Your best bet of the 3 amps mentioned, is the Kenwood KAC-9152D.
Swez
tpx on 07/24/2006 12:43:05
I forgot to tell you but I plan on running it at 4 ohms thats why I wanted to get your opinion on the Alpine and the P/A.I'm scared of wasting money on an amp that claims it can do a 1 ohm load and after I buy it and hook it up only to find out it can't.I am actually considering going with a Mmats amp but for 1 ohm but am really unsure because of the price.
swez on 07/24/2006 20:14:28
If you want to run this sub at 4 ohms, bite the bullet and get a JL 1000/1 Mono amp. This is an excellent amp and if you shop it hard, it can be had for a reasonable price.
As a fall back, the JL 500/1 is also very solid, cost less and only 3dB less SPL as compared to the 1000/1. Both are practically bullet proof when one follows the install manual guidelines.
www.jlaudio.com
Swez
tpx on 07/27/2006 18:01:56
Hey Swez,I got it narrowed down.The Soundstream xt880.2 or Phoenix Gold X600.1.I can get these amps for roughly the same price. PG-class d,600 wrms @1-4ohms,ss filter (alot of reviews said it bench tested at around 820 wrms) Soundstream-more power,I like the design(can't find anywhere if it has a ss Filter).Please give me your opinion on these two and let me know what you would personally run out of these two and the Kenwood 9152D you've mentioned earlier in this topic.
swez on 07/27/2006 19:20:51
The PG X600.1 will net a solid +600 watts RMS at loads between 1 - 4 ohms. It does have a variable SSF. Here is a link with additional details on this amp:
http://www.cardomain.com/item/PHOX6001
FYI: They are not the lowest priced Kids on the block, but if you can show them a verifiable price and meet their price matching criteria, they will give you a discount coupon for 105% of the original sellers price. Check your site prices VS Car Domain and see what they say.
This amp has some of the same type features as the JL Slash series. It is fused at 60A's and very efficient for the power output it can offer. It also has a variable speed cooling fan.
Even though the sub can handle more power, the audible difference will be minimal between 600 vs 900 watts RMS that sub can handle. (1.5dB more SPL)
Also, the SS XTA880.2 is a Class A/B (full range or sub) amplifier. This amp is likely to draw over 100A's at full power. That's a lot of lost watts to heat.
Knowing all that, I recommend the PG X600.1 as your best overall amp for this application. It will be a whole lot more friendly to your car electricals, yet give plenty of power to that sub wired at 4 ohms.
Swez
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