Official Rythmik Audio Subwoofer thread - Page 954 - AVS Forum | Home Theater Discussions And Reviews
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post #28591 of 28610 Old 04-20-2017, 08:59 AM
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Originally Posted by basshead81 View Post
The cabinet is much larger then the V1801, the amp is also much heavier. Driver might be a little heavier too.

The driver and amp is heavier then the JTR, plus JTR uses Baltic birch which is lighter then mdf.
As big as big as FV18s cabinets are (21"(W) x 33" (H )x 22"(D) - (23" D with grille and heatsink)), each one is still about the same size as my Hsu VTF-3 MK3 Turbo (33”(h) w/ Turbo X 17”(w) X 25”(d)), which they will be replacing. They are heavy, though. The shipping weight of each is 180 pounds, which is double the net weight of my old Hsu, less its Turbo unit.

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post #28592 of 28610 Old 04-20-2017, 09:03 AM
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Originally Posted by enricoclaudio View Post
The DS1802 driver alone is 40 lb.
Enrico -- The FV18 spec page describes its driver as a DS1820 18" high excursion with custom sensing coil. How much does it weigh?

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post #28593 of 28610 Old 04-20-2017, 09:15 AM
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Originally Posted by gwsat View Post
Enrico -- The FV18 spec page describes its driver as a DS1820 18" high excursion with custom sensing coil. How much does it weigh?
Sorry, that was a typo. The driver on FV18 is the DS1820 and it weights 40 lb.
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Enrico Castagnetti @ Rythmik Audio
Media Room: Ascend Acoustics Sierra Towers w/ RAAL, Horizon w/ RAAL & Sierra 2s | Rythmik F12SE (x2) | Marantz SR7008 | Parasound Halo P5 | Emotiva XPA-3 & XPA-200 | Oppo 105D | Sony HW40ES |
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post #28594 of 28610 Old 04-21-2017, 06:36 PM
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Originally Posted by imureh View Post
What makes this sub over 70lbs more than the V1801 and 50lbs more than the JTR 118HT?
Although it was mentioned the actual weight is more like 155 vs 180, remember that the V1801 is a VERY small 18" ported sub, so much less weight due to smaller cab. And the JTR is probably not any smaller but does use baltic birch rather than MDF, which is much lighter(but very strong).
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post #28595 of 28610 Old 04-21-2017, 07:45 PM
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Originally Posted by bear123 View Post
Although it was mentioned the actual weight is more like 155 vs 180, remember that the V1801 is a VERY small 18" ported sub, so much less weight due to smaller cab. And the JTR is probably not any smaller but does use baltic birch rather than MDF, which is much lighter(but very strong).
Baltic birch doesn't require the bracing that MDF does. Vs properly braced MDF, there is no performance advantage to BB. Although it should be more durable over a lifetime. I would want baltic birch if I was travelling (PA) or worried about flooding.

*JTR: 17mm baltic birch 13-ply
*Rythmik: ¾" = 18mm MDF
*PSA: 1" = 25.4" MDF (both sides texture painted or veneered)
*Seaton: 1" = 25.4mm MDF (both sides veneered) (1.5" MDF for F18 faceplates), SS used BB in the past
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post #28596 of 28610 Old 04-21-2017, 08:54 PM
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Originally Posted by Marc Alexander View Post
Baltic birch doesn't require the bracing that MDF does. Vs properly braced MDF, there is no performance advantage to BB. Although it should be more durable over a lifetime. I would want baltic birch if I was travelling (PA) or worried about flooding.

*JTR: 17mm baltic birch 13-ply
*Rythmik: ¾" = 18mm MDF
*PSA: 1" = 25.4" MDF (both sides texture painted or veneered)
*Seaton: 1" = 25.4mm MDF (both sides veneered) (1.5" MDF for F18 faceplates), SS used BB in the past
In fact, the front panel is 1-1/2" and the back panel is 1" MDF, even on E15HP, F15HP and FV15HP. 18mm MDF for sides, top, bottom and braces.
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Media Room: Ascend Acoustics Sierra Towers w/ RAAL, Horizon w/ RAAL & Sierra 2s | Rythmik F12SE (x2) | Marantz SR7008 | Parasound Halo P5 | Emotiva XPA-3 & XPA-200 | Oppo 105D | Sony HW40ES |
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post #28597 of 28610 Old 04-21-2017, 09:24 PM
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ply wood i dont care what kind isnt as good as mdf for subs...I have made alot of plywood subs back in the day and they just dont sound as good imo.

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512, Rythmik FV15HP
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post #28598 of 28610 Old 04-21-2017, 09:45 PM
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Rythmik sub is heavier than other ID sub manufacturers mainly comes from its analog amp. I am guessing Rythmik amp would be ~15-25lbs versus ~4-6lbs from Speakerpower?
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post #28599 of 28610 Old 04-21-2017, 10:02 PM
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Quote:
Originally Posted by enricoclaudio View Post
In fact, the front panel is 1-1/2" and the back panel is 1" MDF, even on E15HP, F15HP and FV15HP. 18mm MDF for sides, top, bottom and braces.
Nice, you should advertise this. Your website needs a serious overhaul. HTML5 instead of flash.
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post #28600 of 28610 Old 04-22-2017, 10:04 PM
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Originally Posted by Marc Alexander View Post
Nice, you should advertise this. Your website needs a serious overhaul. HTML5 instead of flash.
html5 & node.js
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post #28601 of 28610 Old 04-22-2017, 10:45 PM
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Originally Posted by torii View Post
who needs subs when towers get you this? not a bragging statement, just a statement...
i need radio shack where to buy
amazon.com unable to get
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post #28602 of 28610 Old 04-22-2017, 11:21 PM
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Originally Posted by torii View Post
who needs subs when towers get you this? not a bragging statement, just a statement...
Was this playing a test tone or a movie scene? SPL is the total sound under the curve so 108dB may not be representative of the bass capabilities of your towers, just the complete sound level. Grab a UMIK-1 and REW and we can get real measurements.
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post #28603 of 28610 Old Yesterday, 08:04 AM
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yea, i was just listening to some music w/out subs...with subs on and during a movie star wars fight scene I get 118db. with rew get 110 at -5mv

since I usually listen in the mid 90's db my point is only really need the subs for movies or electric music. but of course the more subs the better

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512, Rythmik FV15HP
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post #28604 of 28610 Old Yesterday, 08:15 AM
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Originally Posted by gopala33 View Post
i need radio shack where to buy
amazon.com unable to get
dont think they sell this model anymore, its 20 years old. could probably use a phone app.

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512, Rythmik FV15HP
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post #28605 of 28610 Old Yesterday, 08:21 AM
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Originally Posted by Marc Alexander View Post
Was this playing a test tone or a movie scene? SPL is the total sound under the curve so 108dB may not be representative of the bass capabilities of your towers, just the complete sound level. Grab a UMIK-1 and REW and we can get real measurements.
I was just messing around around, nothing serious

this was my last rew with subs at -15 or so mv. I will break out rew again when I buy another rythmik sub, prob the 18.
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Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512, Rythmik FV15HP
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post #28606 of 28610 Old Yesterday, 09:01 AM
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Originally Posted by torii View Post
I was just messing around around, nothing serious

this was my last rew with subs at -15 or so mv. I will break out rew again when I buy another rythmik sub, prob the 18.
I'll report here once I receive my FV18s and get them setup. Rythmik tells me that they will ship tomorrow via UPS and should get here in a couple of days.
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post #28607 of 28610 Old Yesterday, 10:10 AM
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anyone know how amps are measured in regards to gain setting? does max output on amp occur with gain at lowest/middle/highest?

just curious.

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5 Subs: Velodyne HGS 12, VA 1512, Rythmik FV15HP
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post #28608 of 28610 Old Yesterday, 02:00 PM
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Quote:
Originally Posted by torii View Post
ply wood i dont care what kind isnt as good as mdf for subs....
This just isn't true, unless you are talking about ease of finishing. MDF holds an advantage in this area. If you are referring to low quality or low grade plywood, I would have to agree with you. But the discussion was about high quality void free Baltic Birch, which is certainly not inferior in any acoustic way to MDF. It does have the advantage of being stronger and more durable, which may or may not matter to some or most.
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post #28609 of 28610 Old Yesterday, 06:09 PM
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Hi All,


I'm seriously considering purchasing a pair of F8's. I would like to be able to tuck a floor stand (for the front monitors) partly underneath the subwoofer but can't seem to find any information on what, if anything, Rythmik provides for floor mounts. I'm hoping to be able use my SVS Soundpath floor mounts.


Are there any F8 owners that can help fill in the blanks ? A picture or two would be great. Thanks.

Sean
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post #28610 of 28610 Old Today, 01:53 AM
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Quote:
Originally Posted by torii View Post
anyone know how amps are measured in regards to gain setting? does max output on amp occur with gain at lowest/middle/highest?

just curious.
The max output of a sub is finite and can potentially occur at any gain setting.

Gain is not exactly a volume setting, which is why there is a gain adjustment to begin with. Different processors have different subwoofet out voltage characteristics. The gain adjustment matches the amplifiers gain structure to the source. Google amplifier gain matching for more eloquent explanations. There is probably one on the Rythmik website somewhere.
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