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Official Epik Subwoofer Thread - Page 382

post #11431 of 19475
i was about to go for an mfw-15 this week then read m3chris's post on the low end side of the Empire and now i'm having to figure which one to go for. cost wise the empire is a stretch but man talk about quality though. might be a better match with my Sentinel. wonder what else Chad has up his sleeve for subs this year.
post #11432 of 19475
Quote:
Originally Posted by GuidingTheShaft View Post

The Empire MAY benefit from a more powerful amp.

I completely agree here, a 1000 watt rms amplifier upgrade would actually make this a better sub than it already is and its already too much for my room!
post #11433 of 19475
If you're feeling lucky and like to play the odds, go with a MFW

If you want piece of mind, go with Epik.
post #11434 of 19475
Quote:
Originally Posted by soldieroftafari View Post

I completely agree here, a 1000 watt rms amplifier upgrade would actually make this a better sub than it already is and its already too much for my room!

The question is, are the drivers that Chad chose for the Empire capable of handling a 1k watt amplifier? I'm guessing that the drivers are optimized for the 600 watt amp.
post #11435 of 19475
Quote:
Originally Posted by Jahjd2000 View Post

I'm actually vacillating between the Empire and new PC12 plus. I'm 60% HT and 40% music.

What was it that you didn't like about the new PC12 plus for music? Did it lack midbass, clarity, etc.? How was it for HT?

In terms of output, how does the Empire compare to the plus?

You're probably one of the few people (if not the) who can do this A/B comparison at the moment so I really appreciate any insights you may have.

It was the PB12 plus, not the cylinder. The only cylinder I ever had is my current PC Ultra. The PB12 was just too muscular with the bass. My first sub was the HSU VTF2MK3 which spoiled be for music but annoyed be with bottoming out on movies. Actually, I find the older PC ultra to be more articulate than the PB12. However, on HT the PB12 is awesome but I am a music nut.

The Empire is sweet with music and I got no bottoming out on Flight of the Phoenix(plane crash), Up(pillars tumbling), Star Trek(warp sounds). With music the bass sounds subtle and layered as it did with the HSU. The funny thing is that I did not rerun audyssey after unplugging the PC Ultra. However, I had to move it about 4-5 feet from the corner where the Ultra was. I forgot how large the PB12 was since the empire and the PB12 is similar in size. It sticks out like a sore thumb, unlike the PC Ultra which was 1 foot out from the corner. Who cares, I am enjoying sweet bass from Comcast music channel 409 as I type this.

If anyone mentions REW to me I'm gonna........... If you folks love REW so much I don't understand why you don't volunteer to do it for your fellow bass heads.
post #11436 of 19475
Hello! I have lurked here for years and wanted to start out by saying thanks to everybody who posts here. I noticed that yesterday someone mentioned their first impressions of the Empire compared to their sub, and I had the opposite thoughts entirely. So, I really wanted to share my experiences for those of you thinking about getting one.

I'm not a pro or expert on measuring or reviews, but have read a lot of forums and reviews before and have had a lot of subs to compare to each other. My room is about 4000 cubic feet. I've owned some smaller commercial subwoofers in the past from Polk and Velodyne. Each step up brought me closer to better bass. I upgraded to a Rythmik Audio 15 not too long ago and while I liked it, it still did not have enough output for me.

I currently own a pair of MFW-15's. I got them used for a good price since so many people have had problems with them. I took a chance on them and while they are the best subs I've had, I've never really been 100% happy with them. They are co-located in one spot for maximum output and the best performance in my room.

When I saw the new Empire's for sale, I just ordered them on gut instinct. They arrived on a pallet. The packaging is fantastic. They are double boxed and shipped in custom cut foam. Even the shipping boxes looked nice when they arrived. No owners manual yet, but Chad said he is working on this. Even so, he walked me through my basic questions on the phone.

I can definitely say that the Empire's are totally amazing subwoofers and are the best I've had. They are easily outperforming my AV123 MFW-15's by a noticeable margin. They are louder, cleaner, punchier and more musical. Everything about their performance is an improvement from what I am used to. The midbass output is INCREDIBLE, just like Epik promised.

Things that used to bother me about my MFW-15's are no longer an issue. I could bottom out my MFW-15's if I pushed them hard enough. No matter how hard I push the Empire's, they just stay clean. When a movie plays now I just sit back and relax no matter how crazy the soundtrack gets.

My MFW-15's were also somewhat difficult to dial-in and blend with my main speakers. I struggled with it for a long time. The Empire's just dropped in with no fuss. The blend is seamless.

I took out my dual MFW-15's to hook up the Empire's in my room, so I don't know what they all would have sounded like together.

On music, the Empire's sound quality is also a big upgrade. I can absolutely crank these things on music too. I guess that makes sense since the pair of them have four 15 inch drivers between them! I look at the drivers and it is like they are barely moving on music even at wicked volume levels. It just sounds effortless. Clean jazz recordings like Diana Krall sound SOOOO good through the Empires. They only play what is on the recording and the upright bass sounds like it is in the room.

Movies are amazing too with these Empires. The depth charge scene from U-571 felt like it was shaking my room to pieces. The added midbass slam is just as good as the low bass. Iron Man, Finding Nemo, The Incredible Hulk, Fight of the Phoenix are being taken to a new level through these new subs. Anything with that crazy low bass is finding its way into my bluray player. I'm hearing things I never heard before. The sound also seems to keep getting better the more that I play them. They are breaking in NICELY!!!

I hear a definite change in the sound of the sealed Empires versus the ported MFW-15's. Everything sounds tighter on the low end and there is less overhang. It is very crisp and I love the sound!!!

The output in every register has also increased noticeably versus my old subs. With some rough measurements I am getting at least 3 dB more on the low end around 20 Hz. When I start using REALLY low test tones below 15 Hz, the MFW-15's don't like it. The ports and drivers go crazy and I have to back off. The Empire's sealed design doesn't mind the low test tones at all. I can't really hear anything from the subs with test tones below 20 Hz, but I can feel it and the walls and everything in my room starts rattling. Even at 10 Hz there is something going on down low.

As I go up in frequency, the Empire's start getting WAY louder than the MFW-15's. And when you start getting above 40 Hz it gets insane. At 80 Hz, ONE Empire is easily louder than BOTH of the MFW-15's playing together. It measured about 4 dB louder and I basically couldn't take it anymore it was so loud. With both subwoofers hooked up the max output is totally unreal. Movies that have heavy artillery or explosions now have chest slam thanks to the added output.

It is also cool that when you set your hand on an Empire playing really loud, you can't feel much of anything. The opposite firing drivers are really effective. It definitely has an effect on the sound. All my previous subwoofers shook, so I couldn't use them as end tables.

I probably sound like a broken record, but the clarity and sound of the system is just different now. The dynamics are also transformed. Even at the same volume level as my MFW-15's, my Empire's just sound more alive. When I have to occasionally listen at lower levels, this is a nice little bonus.

The Empire is definitely heavier than I expected. I liked that the MFW-15's were a little lighter and easier to move around. I left off the spikes and could push them around on my carpet. I used a dolly to roll the Empire's around and that ended up working out just fine though.

The Empire's don't have the same finish quality as the MFW-15's either. My MFW-15's are beautiful Cherry veneer. But, you can't hear the veneer, so I don't mind. The finish of the Empire's is better than I expected though. The black finish is smooth and the grills on the sides make it look really nice. The round corners also make it look smaller than it is.

I just wanted to tell everybody not to question getting one of these beauties. Epik has a winner here. I am incredibly impressed with the performance and the craftsmanship. Now I get why people on the forums say that you have to hear it to believe it. It's like a tank, and sounds amazing. I don't think that they are charging enough for these subwoofers. I would have paid a lot more for them if I knew it was this good.

I have never been so happy with an audio component purchase. I took a chance on Epik and I am glad that I did! Their service has been amazing too. Chad really knows how to design a subwoofer and answered all my questions.

I will post more about them as I play with them more. I will try to get some pictures up shortly too. A friend of mine agreed to bring over his Hsu ULS-15 to compare with the Empire sometime, so if he brings it over, I can't wait to hear that too.

Sorry that this is so long! I just wanted to share.

P.S. At Chad's (Epik's owner) request, I bought Terminator Salvation and watched the gas station scene. The bass and especially the midbass coming from the Empire during this scene is nothing short of unreal. It was downright scary. Along with all of the explosions, the robot makes this noise as it moves around which the Empire's just crank out. It sounded like my room was being torn apart. Never heard anything quite like that before!!
post #11437 of 19475
Quote:
Originally Posted by JoshKo View Post

If you're feeling lucky and like to play the odds, go with a MFW

If you want piece of mind, go with Epik.

well said, don't know if Mark has gotten the amp issues behind them.
post #11438 of 19475
Radagast...very thoughtful and detailed review. Good stuff.

Really looking forward to the pictures.
post #11439 of 19475
wow....Radagast11. Nice review. Thanks for sharing your impressions.
post #11440 of 19475
Quote:
Originally Posted by mdm1699 View Post

It was the PB12 plus, not the cylinder. The only cylinder I ever had is my current PC Ultra. The PB12 was just too muscular with the bass. My first sub was the HSU VTF2MK3 which spoiled be for music but annoyed be with bottoming out on movies. Actually, I find the older PC ultra to be more articulate than the PB12. However, on HT the PB12 is awesome but I am a music nut.

The Empire is sweet with music and I got no bottoming out on Flight of the Phoenix(plane crash), Up(pillars tumbling), Star Trek(warp sounds). With music the bass sounds subtle and layered as it did with the HSU. The funny thing is that I did not rerun audyssey after unplugging the PC Ultra. However, I had to move it about 4-5 feet from the corner where the Ultra was. I forgot how large the PB12 was since the empire and the PB12 is similar in size. It sticks out like a sore thumb, unlike the PC Ultra which was 1 foot out from the corner. Who cares, I am enjoying sweet bass from Comcast music channel 409 as I type this.

If anyone mentions REW to me I'm gonna........... If you folks love REW so much I don't understand why you don't volunteer to do it for your fellow bass heads.

Thanks man. Just to confirm, you had a new PB12 with the 12.4 woofer, correct?
post #11441 of 19475
Quote:
A friend of mine agreed to bring over his Hsu ULS-15 to compare with the Empire sometime, so if he brings it over, I can't wait to hear that too.

Can't wait to hear that comparison as I am waiting for a ULS-15 to arrive on Monday.
post #11442 of 19475
Great review Radagast11, I agree with everything you said. The midbass is very impressive on these but I dont feel like the lows are far behind either. I honestly dont know how these work so well with only 600 watts
post #11443 of 19475
Very Well said Rad!
Had the Empire for a few days now, No regrets. Got tired of waiting on Dragon or Phoenix stock so I took a gamble not knowing much about it but I preferred a sealed design and the price made it easy. This is my first sub, never was a bass head, priority has always been music over HT performance.

Placement was random while I wait on a longer cable, but the output is sweet. Just listened to Jeff Beck Blue Ray again not overly full of low end but the Empire definitely complimented my Def towers providing a more live sound, felt like I was sitting at one of the tables in the crowd. Watching the latest Terminator Blue Ray had a couple of Wow factors for me with the gain only set at 1/3 and Audyssey calibrated settings for now. Looking forward to getting it placed and dialed in. Like I said no regrets at all for a first sub.
post #11444 of 19475
Had some dinner before deciding to move the sub into it's final resting place. Did a little tweaking and Damn, it sounds good! My daughter wanted to play some of her dance music stuff....Boom, Boom Pow? Anyways, the drum sequence in that song is pretty impressive. She had a big grin.

There will be a shelf installed tomorrow above the sub so I can move my PC case above it. I have the sub about 5" from the side wall. Chad said 2-3" is just fine.

post #11445 of 19475
so, mine has arrived...

it replaced an outlaw lfm-1ex (350w single 12" ported, hsu vtf3 clone). i've also spent a fair amount of time with a friend's rhythmik f15 while he was 'between places'.

picked it up yesterday, hooked it up last night, re-ran an audyssey xt eq (gain @ 50%) this morning, and, well...

damn!

first thing i played was the desert sniper scene from 'hurt locker'. that .50cal hit *hard*. then some big bass music (jurassic 5). then some more sedate stuff, still with some low end (chris isaak, lyle lovett).

first impressions? like i said...damn! sooo much better than the outlaw. way more visceral when it needs to be, and more musical too...crisp & taught, integrates better with the mains. it has been a while since i had the f15 in the space, but i remember being impressed in the same way by its handling of the music. the empire has it all over what i remember of the f15 in the movie dept, however. all of this is with the sub in the same position, with the same eq process.

now for that sub eq...
post #11446 of 19475
Quote:
Originally Posted by dookie1 View Post

so, mine has arrived...

it replaced an outlaw lfm-1ex (350w single 12" ported, hsu vtf3 clone). i've also spent a fair amount of time with a friend's rhythmik f15 while he was 'between places'.

picked it up yesterday, hooked it up last night, re-ran an audyssey xt eq (gain @ 50%) this morning, and, well...

damn!

first thing i played was the desert sniper scene from 'hurt locker'. that .50cal hit *hard*. then some big bass music (jurassic 5). then some more sedate stuff, still with some low end (chris isaak, lyle lovett).

first impressions? like i said...damn! sooo much better than the outlaw. way more visceral when it needs to be, and more musical too...crisp & taught, integrates better with the mains. it has been a while since i had the f15 in the space, but i remember being impressed in the same way by its handling of the music. the empire has it all over what i remember of the f15 in the movie dept, however. all of this is with the sub in the same position, with the same eq process.

now for that sub eq...

You only got one!? I'm disappointed! Just kidding, congrats.
post #11447 of 19475
Wonder how dual empires would integrate with a pb13?
post #11448 of 19475
Quote:
Originally Posted by Jahjd2000 View Post

Thanks man. Just to confirm, you had a new PB12 with the 12.4 woofer, correct?

Yes. The surround on that thing is ridiculous. I wondered if it restrained the woofer too much but I am no engineer. Yes the new PB12 with the oak sides. It is a sucker to grip as well because the sides are so rounded at the bottom. Low center of gravity too. ouch.
post #11449 of 19475
Quote:
Originally Posted by Radagast11 View Post

Hello! I have lurked here for years and wanted to start out by saying thanks to everybody who posts here. I noticed that yesterday someone mentioned their first impressions of the Empire compared to their sub, and I had the opposite thoughts entirely. So, I really wanted to share my experiences for those of you thinking about getting one.

I'm not a pro or expert on measuring or reviews, but have read a lot of forums and reviews before and have had a lot of subs to compare to each other. My room is about 4000 cubic feet. I've owned some smaller commercial subwoofers in the past from Polk and Velodyne. Each step up brought me closer to better bass. I upgraded to a Rythmik Audio 15 not too long ago and while I liked it, it still did not have enough output for me.

I currently own a pair of MFW-15's. I got them used for a good price since so many people have had problems with them. I took a chance on them and while they are the best subs I've had, I've never really been 100% happy with them. They are co-located in one spot for maximum output and the best performance in my room.

When I saw the new Empire's for sale, I just ordered them on gut instinct. They arrived on a pallet. The packaging is fantastic. They are double boxed and shipped in custom cut foam. Even the shipping boxes looked nice when they arrived. No owners manual yet, but Chad said he is working on this. Even so, he walked me through my basic questions on the phone.

I can definitely say that the Empire's are totally amazing subwoofers and are the best I've had. They are easily outperforming my AV123 MFW-15's by a noticeable margin. They are louder, cleaner, punchier and more musical. Everything about their performance is an improvement from what I am used to. The midbass output is INCREDIBLE, just like Epik promised.

Things that used to bother me about my MFW-15's are no longer an issue. I could bottom out my MFW-15's if I pushed them hard enough. No matter how hard I push the Empire's, they just stay clean. When a movie plays now I just sit back and relax no matter how crazy the soundtrack gets.

My MFW-15's were also somewhat difficult to dial-in and blend with my main speakers. I struggled with it for a long time. The Empire's just dropped in with no fuss. The blend is seamless.

I took out my dual MFW-15's to hook up the Empire's in my room, so I don't know what they all would have sounded like together.

On music, the Empire's sound quality is also a big upgrade. I can absolutely crank these things on music too. I guess that makes sense since the pair of them have four 15 inch drivers between them! I look at the drivers and it is like they are barely moving on music even at wicked volume levels. It just sounds effortless. Clean jazz recordings like Diana Krall sound SOOOO good through the Empires. They only play what is on the recording and the upright bass sounds like it is in the room.

Movies are amazing too with these Empires. The depth charge scene from U-571 felt like it was shaking my room to pieces. The added midbass slam is just as good as the low bass. Iron Man, Finding Nemo, The Incredible Hulk, Fight of the Phoenix are being taken to a new level through these new subs. Anything with that crazy low bass is finding its way into my bluray player. I'm hearing things I never heard before. The sound also seems to keep getting better the more that I play them. They are breaking in NICELY!!!

I hear a definite change in the sound of the sealed Empires versus the ported MFW-15's. Everything sounds tighter on the low end and there is less overhang. It is very crisp and I love the sound!!!

The output in every register has also increased noticeably versus my old subs. With some rough measurements I am getting at least 3 dB more on the low end around 20 Hz. When I start using REALLY low test tones below 15 Hz, the MFW-15's don't like it. The ports and drivers go crazy and I have to back off. The Empire's sealed design doesn't mind the low test tones at all. I can't really hear anything from the subs with test tones below 20 Hz, but I can feel it and the walls and everything in my room starts rattling. Even at 10 Hz there is something going on down low.

As I go up in frequency, the Empire's start getting WAY louder than the MFW-15's. And when you start getting above 40 Hz it gets insane. At 80 Hz, ONE Empire is easily louder than BOTH of the MFW-15's playing together. It measured about 4 dB louder and I basically couldn't take it anymore it was so loud. With both subwoofers hooked up the max output is totally unreal. Movies that have heavy artillery or explosions now have chest slam thanks to the added output.

It is also cool that when you set your hand on an Empire playing really loud, you can't feel much of anything. The opposite firing drivers are really effective. It definitely has an effect on the sound. All my previous subwoofers shook, so I couldn't use them as end tables.

I probably sound like a broken record, but the clarity and sound of the system is just different now. The dynamics are also transformed. Even at the same volume level as my MFW-15's, my Empire's just sound more alive. When I have to occasionally listen at lower levels, this is a nice little bonus.

The Empire is definitely heavier than I expected. I liked that the MFW-15's were a little lighter and easier to move around. I left off the spikes and could push them around on my carpet. I used a dolly to roll the Empire's around and that ended up working out just fine though.

The Empire's don't have the same finish quality as the MFW-15's either. My MFW-15's are beautiful Cherry veneer. But, you can't hear the veneer, so I don't mind. The finish of the Empire's is better than I expected though. The black finish is smooth and the grills on the sides make it look really nice. The round corners also make it look smaller than it is.

I just wanted to tell everybody not to question getting one of these beauties. Epik has a winner here. I am incredibly impressed with the performance and the craftsmanship. Now I get why people on the forums say that you have to hear it to believe it. It's like a tank, and sounds amazing. I don't think that they are charging enough for these subwoofers. I would have paid a lot more for them if I knew it was this good.

I have never been so happy with an audio component purchase. I took a chance on Epik and I am glad that I did! Their service has been amazing too. Chad really knows how to design a subwoofer and answered all my questions.

I will post more about them as I play with them more. I will try to get some pictures up shortly too. A friend of mine agreed to bring over his Hsu ULS-15 to compare with the Empire sometime, so if he brings it over, I can't wait to hear that too.

Sorry that this is so long! I just wanted to share.

P.S. At Chad's (Epik's owner) request, I bought Terminator Salvation and watched the gas station scene. The bass and especially the midbass coming from the Empire during this scene is nothing short of unreal. It was downright scary. Along with all of the explosions, the robot makes this noise as it moves around which the Empire's just crank out. It sounded like my room was being torn apart. Never heard anything quite like that before!!

wow great review, kind of makes me want one. Interesting Chad decided to use a 600 watt amp to power dual 15s in a sealed box no less.
post #11450 of 19475
Quote:
Originally Posted by d3adpool View Post

wow great review, kind of makes me want one. Interesting Chad decided to use a 600 watt amp to power dual 15s in a sealed box no less.

Call Chad and ask him why. The sub runs effortlessly even after running some very intense 10-80hz sweeps. It does not seem to lack power at all and I'm sure if it needed more power, Chad would spec it appropriately.. I have the final gain between 10-11 o'clock.
post #11451 of 19475
due to the side firing drivers, is anyone having issues with room items rattling when the sub is placed close to tables, audio racks, etc?
post #11452 of 19475
Quote:
Originally Posted by neekos View Post

due to the side firing drivers, is anyone having issues with room items rattling when the sub is placed close to tables, audio racks, etc?

I was surprised to find things on my desk are pretty stable, but I found some new rattles in my fireplace and it makes the wooden shades vibrate pretty good. I just thought it would be a smart move to relocate the Empire away from my audio rack. I'm sure every room will have different responses based on location.
post #11453 of 19475
Radagast11,

Fun post to read. Pushes me one step closer to pulling the trigger on duals. How big is your room ?

Dave
post #11454 of 19475
My budget has increased from 2000 to almost 4000 and was looking at other options. The more I think about my options I think I am going to go with the Dual Empires. There is no doubt in my mine they will out perform the velodyne ct-150 I have now. With the money I will be saving I will upgrade HT system in the bedroom. The bedroom will get the old velodyne. Right now the bedroom has a 32" lcd and a cheap HT in a box. Looking to move the 32" and the HT in a box to the daycare room. I will be going with a 45"-55" plasma and Polk Audio Tsi series speakers. My wife is all excited cause she will be able to compete now, LOL only if she knew.....
post #11455 of 19475
For people speculating on shipping costs based on their location, I don't think it matters. I contacted Epik as I live about an 1 1/2 hours away and have been weighing out pick up vs. shipping. The shipping to my house is still $118 as it seems to be for everyone regardless of shipping distance. Just an FYI.
post #11456 of 19475
Do they deliver on Saturday? I live in Denton, Tx and my package was delivered to Dallas Thursday. I took Friday off of work cause I figured it would be delivered then.... nope. It's sitting at "Scanned" on the shipment tracking.

Do they call to set up a delivery every time, cause I haven't received a phone call yet. I'm dying waiting for this sub!
post #11457 of 19475
mrbass21,

In DFW, call after 8am 214 702 7254 with your tracking number to confirm shipping day with DB Schenker, the shipping company. I am not sure if they are open on weekends, cause I called on a Monday.
post #11458 of 19475
Quote:
Originally Posted by DoingOK View Post

Call Chad and ask him why. The sub runs effortlessly even after running some very intense 10-80hz sweeps. It does not seem to lack power at all and I'm sure if it needed more power, Chad would spec it appropriately.. I have the final gain between 10-11 o'clock.


Running sweeps is no indication of a sub's power.
post #11459 of 19475
Quote:
Originally Posted by GuidingTheShaft View Post

The Empire MAY benefit from a more powerful amp.

Quote:
Originally Posted by soldieroftafari View Post

I completely agree here, a 1000 watt rms amplifier upgrade would actually make this a better sub than it already is and its already too much for my room!

As enthusiasts, it is always tempting to throw more power into the mix.

However, starting at 600W and going to 1000W would only add 2.21dB to the Empire's max output:

dB= 20log(V1/V2)= 10log(P1/P2)
10log(1000W/600W) = 10log(1.6666) = 2.21dB

Extra headroom is always good of course but going duals and co-locating (stacking for example) buys 6dB of extra headroom.

Chad's posted pictures including an Empire stack - Preferred way to get more power?

Also, at this point we are speculating about the sensitivity of the drivers; if they are more sensitive then they will have as much SPL with 300watts/driver as another sub using a more powerful amp coupled to a less sensitive driver. Given Chad's reputation in designing and building subwoofer drivers, it may be reasonable to trust his design/specification of the Empire drivers.

Someone posted that the drivers have larger diameter magnets (and presumably higher Bl) than the previously used 15" drivers. That combined with the fact that the dual 15" drivers have an Sd equivalent to a 21.2" driver may mean that higher amp power is not really needed.

We can also safely assume that Chad knows how to mate amp to driver in such a way as to prevent over-excursion of the driver while still providing maximum use of the driver's capabilities over a long service lifetime.

The fact that he is utilizing the same tried and true 600watt amp from previous designs does not mean that he is somehow shortchanging the dual drivers.

Given the sealed design, which safely limits excursion, I would like to hear from any Empire owners who are applying EQ, say a shelving filter down low, to see how much more in-room extension is available without running out of amplifier headroom in "normal" use.

Anyone familiar with IB (infinite baffle) subs knows that as you add multiple drivers, your power needs per driver drop. The dual design of the Empire already gains similar synergy (like the Submersive) from two co-located drivers per cabinet.

No surprise that those who took the chance on dual Empires are finding their basshead needs met head on.
post #11460 of 19475
Quote:
Originally Posted by DoingOK View Post

Call Chad and ask him why. The sub runs effortlessly even after running some very intense 10-80hz sweeps. It does not seem to lack power at all and I'm sure if it needed more power, Chad would spec it appropriately.. I have the final gain between 10-11 o'clock.

Quote:
Originally Posted by JimP View Post

Running sweeps is no indication of a sub's power.

Perhaps you would like to qualify your flat statement?

Running sweeps and measuring the output is precisely how sub SPL is measured.

Using sine waves certainly puts the system to a realistic test, excepting power compression effects but those relate more to the driver's voice coil limitations and cabinet cooling over time than to the amplifier power.

The CEA2010 test uses 5-6 cycle tone bursts instead of sine waves and some argue gives falsely higher SPL readings as a result but sweeps, especially slow sine wave sweeps, are certainly a reliable indicator of SPL capability when measured with reasonable accuracy.

Real music requires more from the amplifier's power supply, no doubt, but the amp running out of steam causes audible distortion or less than satisfying power levels, neither of which have yet been reported here.

Of course, the room effects dominate the frequency response and room gain inflates the SPL from outdoor measurements. But since the sub is going to be used in a particular room, sweeping and EQ-ing in that room makes total sense.

Or did you mean that you cannot infer amplifier power from measured sweeps?
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