Jamo Sub 650 Omnimic Frequency Response Graphs - Page 2 - AVS Forum
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post #31 of 60 Old 08-23-2012, 04:54 PM
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Quote:
Originally Posted by joehonest View Post

I think on avg is 100db very very loud for night time tv ?

It's loud for daytime TV as well. If you were ever subject to 100dB for the duration of a single movie you'd probably never do it again. That's louder than a theater, and personally I find those too loud often times. It's more painful than enjoyable. It is for me anyway...

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post #32 of 60 Old 08-23-2012, 06:29 PM
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I can't believe I never did this, I've owned a RS sound level meter for over ten years, I'm going watch TV and monitor the levels tonight.
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post #33 of 60 Old 08-24-2012, 06:58 AM
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Quote:
Originally Posted by joehonest View Post

I can't believe I never did this, I've owned a RS sound level meter for over ten years, I'm going watch TV and monitor the levels tonight.

It turns out that in normal tv viewing its 78 to 86 db at the MLP same point used for audyssey #1 test. For cable movies and blurays its much louder for the peaks, which I didn't watch any last night.. It was a long day for me..
I think the Jamo 650 would easily fill my needs for a sub in such a small room at modest volume levels.
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post #34 of 60 Old 08-24-2012, 07:36 AM
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Quote:
Originally Posted by joehonest View Post

I think the Jamo 650 would easily fill my needs for a sub in such a small room at modest volume levels.

If Archaea picked up one for a small room there's a very good chance it will exceed your expectations. He happens to be quite the bass-head, so if it works for him I suspect it would for you as well. smile.gif

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post #35 of 60 Old 08-24-2012, 07:42 AM
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So, I think I've narrowed my choices down to a pair of these Jamo's, an EPIK Legend, or a Rumba 12. Can any of you offer any input that would help me decide? I know that OP reviewed the Jamo's, and Jim Wilson reviewed the Rumba 12, but I can't find much on the EPIK Legend and how it compares.
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post #36 of 60 Old 08-24-2012, 07:58 AM
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Quote:
Originally Posted by JimWilson View Post

If Archaea picked up one for a small room there's a very good chance it will exceed your expectations. He happens to be quite the bass-head, so if it works for him I suspect it would for you as well. smile.gif

I know with the Jamo I never hear port noise, which is a BIG plus, The RW-12d will bang louder but not as deep. I'm just waiting for all the Labor day sales. If the RW-12d dropped to 250 would that become the best deal ?
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post #37 of 60 Old 08-24-2012, 08:53 AM
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Quote:
Originally Posted by joehonest View Post

I know with the Jamo I never hear port noise, which is a BIG plus, The RW-12d will bang louder but not as deep. I'm just waiting for all the Labor day sales. If the RW-12d dropped to 250 would that become the best deal ?

Archaea is perhaps the only one of us who can answer that question, because he's had his hands on both of them. I know he likes the RW-12d, but the Jamo seems to have really impressed him. If you're still planning on putting it in an 1800 CF room then I have a sneaking suspicion I know what his answer will be though... tongue.gif

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post #38 of 60 Old 08-24-2012, 08:56 AM
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Thanks to Archaea I am also looking at this sub to pair with my dual opposed 10" subwoofer in a 2600cuft room. Not looking for ultimate in spl as long as the 2 subs together provide enough spl in 25-65hz range for movies as well as music. I like accuracy with decent extension over raw output. These subs will ultimately be joined by two more DIY 12" GR research passive subs in future which I think will provide me with enough extension & spl for my room.

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post #39 of 60 Old 08-24-2012, 09:05 AM - Thread Starter
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I want to wait till I hear them side by side - before making any verdict.


Most peoples' audio memory is poor -- I've found I'm not exception...

A / B is really the best way to determine. I hope to have an answer soon by comparing them directly in the same room at the same time. In way of just plain fact - they both represent exceptional values at their sale pricepoints in my opinion -- regardless of the 1 on 1 victor.

I'm impressed enough with the Jamo value to have purchased one for use in a second room, for PC use. I didn't buy it because it can shake pictures off the wall. This sub isn't about that. I have all that and more in my Captivator pair. A flat frequency response out of the box is valuable to me. Not all my systems use EQ, or have the ability to EQ. It's nice to start from a good spot which both the Klipsch and Jamo seem to do especially well for the $300 price range.

Both subs have a bit of ability to personalize the low end. Jamo with boundary gain knob allows variable lowering the 20hz end of the spectrum by up to about 5dB at full knob turn. The Klipsch has the three different DSP settings, punch, depth, and flat to help cater the sound to your room/preference. The Klipsch DSP probably has a bit more customization because the punch setting also bumps up the 70hz range a little bit besides lowering the 20hz a little bit -- at least according to measurements in my room.

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post #40 of 60 Old 08-24-2012, 09:15 AM
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I am looking for a budget <$300 sub to go in my living room along with the Andrew Jones Pioneer 5.0 system I recently purchased (FS51, C21, B21). Receiver is an Onkyo 616 (only 2EQ).

The living room is approx. 17' x 10' and the dining room is approx 14' x 14'. The entire apartment has 9' ceilings.

What would be your recommendations between the RW-12D and the SUB 650? My main priority is SQ as I will not being cranking the sub up very high. Looking for accurate bass that will still be able to fill the room and provide low frequency depth.

Edit: Forgot to mention that the sub will be going in the right front corner of the living room. I could potentially do the back right corner, but the RCA cable I bought from Monoprice when I bought speaker wire is only 15', so it wouldn't reach. So it would add another ~$20 to purchase another cable, plus the $10 I already spent on the one I have.

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post #41 of 60 Old 08-24-2012, 09:24 AM
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My Onkyo 5007 has these tweaks, I'm NOT 100% clear on their function and how / why to use them.

THX Ultra2/Select2 Subwoofer
No: Select this if you do not have a THX-certified subwoofer.
Yes: Select this if you have a THX-certified subwoofer.
Note:
If the “Subwoofer” setting is set to “No”, this setting cannot be selected
BGC Off: Select this to turn off BGC.
On: Select this to turn on BGC.
Note:
This setting is only available if “THX Ultra2/Select2 Subwoofer” is set to “Yes”.

I ask this here, cause the Onkyo threads is not were the subwoofer pros are to be found;)
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post #42 of 60 Old 08-24-2012, 10:03 AM - Thread Starter
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You won't use THX mode with this Jamo 650 Sub.

THX mode disables the gain attenuation on the sub and forces the receiver to control the gain.

A THX certified sub (like my Jamo D7) lit up a light on the sub when it went into THX mode. It matches gain levels in the receiver to apply proper levels to achieve THX certified sound. The gain knob/(volume knob) on the sub stopped functioning at the point.

Boundary gain can be done through the receiver menus or through the Jamo sub's amp. The Jamo 650 sub has it on a rotary knob for boundary gain. You can see the effect of the dial on the frequency response in one of my graphs in this thread. At max tilt it lowers the 20hz frequency by about 5dB. Some people find that 20hz bass is too strong if the sub is corner loaded. This allows you to turn it down if you don't like the tactile effect/sound.

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post #43 of 60 Old 08-25-2012, 10:19 PM - Thread Starter
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post #44 of 60 Old 09-09-2012, 01:58 PM - Thread Starter
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I had a couple people ask me what the Jamo subs could do up top to see if they could cross them over to small satelite speakers. The answer is yes. These are close mic graphs -with the omnimic tip about an inch from the dust cone. These graphs do not represent a spl limit - they were just taken at an arbitrary volume. There is no smoothing on the graph, but 10 sweeps were averaged in both cases. The anomoly peak on the subwoofer graph at 160 or 170hz is an odditiy, I don't know what to make of it. If I enabled graph smoothing of course it didn't show, but I'd rather chart things as they are with no smoothing used.


Jamosub650-swoutat120hzvsleftchanneloutonfullrange-LPFcomparison.jpg

The red line is the Jamo Sub 650 connected to my Left RCA pre-out instead of the subwoofer output. The pre-out is producing a full range signal.
The purple line is the Jamo Sub 650 connected to my subwoofer pre-out, which has a max LPF of 120hz. My receiver is an Onkyo TX-NR1007

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post #45 of 60 Old 10-06-2012, 12:42 PM
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So, would the above graph be the same if you went "old school" and actually used the speaker level inputs on the Jamo to run it of the R&L channels with the satellite speakers?
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post #46 of 60 Old 10-06-2012, 03:15 PM - Thread Starter
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Yes

"Without subs it's just background music - with subs it's the main event!"
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post #47 of 60 Old 10-06-2012, 08:49 PM
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How about one each of the Klipsch rw12d and the Jamo 650? I bought the RW 12d not long ago and love it. But now I see a link to the Jamo at $242 shipping included! Would there be any disadvantage to running these together?

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post #48 of 60 Old 10-06-2012, 09:54 PM
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Quote:
Originally Posted by colohtpc View Post

How about one each of the Klipsch rw12d and the Jamo 650? I bought the RW 12d not long ago and love it. But now I see a link to the Jamo at $242 shipping included! Would there be any disadvantage to running these together?

That might not be such a good idea. Two are very different types of subwoofers, and would probably not blend all that well.

Where are you seeing the Jamo for $242? I'm sure there are other people who would be quite interested in that link.

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post #49 of 60 Old 10-07-2012, 05:35 PM
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Jamo Sub 650: Open Box
http://www.vanns.com/shop/servlet/item/clearance/549645163

They are open box but for the price it is very tempting.

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post #50 of 60 Old 10-07-2012, 09:23 PM
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If you love the Klipsch, why not go with a second.
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post #51 of 60 Old 10-07-2012, 10:58 PM
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Sold out at Vanns now. Guess I wont be getting a second one. Damn!
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post #52 of 60 Old 10-15-2012, 01:08 PM
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Ive had one for a couple of years now & with each new upgrade,this sub has never let me down once. Ive also been tempted to utilize two sub650s but unfortunely they cost approx €600 if you can get one,although the sub660s only difference seems to be 660w tpo vs. 650w. (& prob. €100 more). smile.gif

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post #53 of 60 Old 10-16-2012, 10:40 PM
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There are a couple on ebay right now for around $450-$500. Not sure I can afford to spend that much on another... frown.gif
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post #54 of 60 Old 10-17-2012, 11:44 AM
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yea,the bane of HT & HIFI...upgraditus..

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post #55 of 60 Old 10-30-2012, 01:23 AM
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I purchased the jamo sub 650 upon Archaea recommendation and I like it but one thing bothers me.
I have to set the jamos blue led volume close to full to give it the same punch as my SVS 10. Any less it feels weak.
Is it safe to set the subwoofer volume that high or will I risk damaging it?

My pioneer subwoofer volume is to +2.
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post #56 of 60 Old 10-30-2012, 06:33 AM - Thread Starter
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if you aren't hearing any bad noises it is perfectly fine...

"Without subs it's just background music - with subs it's the main event!"
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post #57 of 60 Old 11-02-2012, 07:03 AM
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They work REALLY well in pairs... This is what I found was best for my room. ihad y turned up almost all the way but, after getting anohter Sub 650, you can turn them way down and get so much more, detailed, punchy bass.
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post #58 of 60 Old 11-07-2012, 01:25 AM
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thanks for the reply Archaea. I expecting more from this sub but I bought it cheap so shouldn't complain. I always set the volume to around 1 to 2 o'clock. It gives me a decent amount of bass for gaming.
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post #59 of 60 Old 11-24-2012, 04:17 PM
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Thanks to Archaea. Went shopping the other day but I clicked too late and lost the chance to get a pair instead of a single. biggrin.gif

Like emr25 my open-floor layout first floor living room + hallway is 25' x 22' x 9' high which unfortunately opens up at the end entrance to stairs and the archway to kitchen dining of 14' x 25' x 9' high. Hoping that the single sub will fill the initial living room as the kitchen doesn't really need to hear anyway. Though from just using the Velodine room sizing charts from an initial search this doesn't seem to be enough sub for what I have to work with but can't bring myself to pay more than $600 as the rest would be for some nice LCR speakers.
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post #60 of 60 Old 11-24-2012, 04:58 PM
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Quote:
Originally Posted by mike kaw View Post

I purchased the jamo sub 650 upon Archaea recommendation and I like it but one thing bothers me.
I have to set the jamos blue led volume close to full to give it the same punch as my SVS 10. Any less it feels weak.
Is it safe to set the subwoofer volume that high or will I risk damaging it?
My pioneer subwoofer volume is to +2.
TBH Ive never had to push it any more than half way. If you have to put any subwoofers volume on full or almost full,somethings amiss somewhere.smile.gif

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