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Go Back   Blu-ray Forum > Audio > Subwoofers


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Old 03-23-2011, 03:56 AM   #61
crazyBLUE crazyBLUE is offline
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Quote:
Originally Posted by Big Daddy View Post
The Pyramid and Pyle pro are stereo and can control two subwoofers, but the volume will not be independent. The setup is like your transducer. You bypass the crossover and set it in the receiver.
I understand that & think with the way the subs are being so close in distance to the listening position & at the same height that this will work for me. If not I can always get another pyramid to separate the volume for the 2 subs.
Brent

Changing to 4K ~ Got the 60" TV. Next the player, movies. Then the sound system ~ Again LOL........
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Old 06-25-2011, 10:03 AM   #62
Blu-Boy in BKK Blu-Boy in BKK is offline
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Thanks to the excellent advice and tips given to me by Big Daddy my Sub-woofer is seriously kicking arse. TY
Projectors: BenQ W1070 & Hitachi PJ-TX200| Screen: 106"| HDTV: LG 50PH660V 3D Plasma| BD Players: Panasonic DMP-BDT310 (ABC) Pioneer BDP-450 (ABC)| Receiver: Pioneer SC2023| Speakers: Jamo S626 HCS 7.0| Subwoofer: Wharfedale Diamond SW150| MacBook Pro i7 13" Region ABC| SteelBooks: 639



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Old 01-03-2013, 09:40 PM   #63
rpfef rpfef is offline
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Default Owners' manual for Pyramid SEA3000?

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Originally Posted by crazyBLUE View Post
Big Daddy

I want to add a volume control to my 2 smaller subs. Can I just get another Pyramid ~ sea3000 electronic crossover network like I have for my transducer & use it for controlling the volume of the subs I have nearest me in the HT ?
I bought a used Pyramid SEA3000 and have been having hell of a time getting an owners' manual.Do you have one or do you know where I can get one?
Thanks. You can call me at 415 868 2103.

--Richard
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Old 01-04-2013, 02:26 AM   #64
Big Daddy Big Daddy is offline
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Quote:
Originally Posted by rpfef View Post
I bought a used Pyramid SEA3000 and have been having hell of a time getting an owners' manual.Do you have one or do you know where I can get one?
Thanks. You can call me at 415 868 2103.

--Richard
You can download the manual from their website.

http://www.pyramidcaraudio.com/sku/P...onic-Crossover
HT Room: Panasonic PT-AE8000, Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Yamaha-RX-A3010 Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83, Sony BDP-S790, Audio Technica Tuntable, Mitsubishi S-VHS, 2 Def. Tech. Super Towers w 15" subs, 1 Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Cadence Presence, 2 Bose 901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, Velodyne SMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 Power Conditioners.
Two-Channel Room: XiangSheng Tube Preamp., Carver TFM-45 Amp. (375 W/Ch), Behringer EPX4000 Amp., Onkyo CD player, Denon Turntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 Super Tweeters, 2 DIY Folded Horn Super Towers with 15" Sub., 1 Modified AA HD-SUB12
Family Room: Mitsubishi 73" Diamond Series TV, Yamaha DSP-A3090 Rec., DirecTV HD-DVR, PS3, Zvox Speaker, 1 DIY 12" Sub.
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Old 01-16-2013, 04:54 AM   #65
Joshjp Joshjp is offline
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Hey guys just got the Emotiva UMC-200 and it has some features that my other AVR didnt have, first is i can now set the Slopes for the speakers and subs, right now the speakers are set at a 12db slope, and the sub is set at 24db slope, should i leave it there? I have sealed subs, and i read somewere to leave the slope at 12db is this correct? Thanks
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Old 01-16-2013, 05:45 AM   #66
Big Daddy Big Daddy is offline
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Quote:
Originally Posted by Joshjp View Post
Hey guys just got the Emotiva UMC-200 and it has some features that my other AVR didnt have, first is i can now set the Slopes for the speakers and subs, right now the speakers are set at a 12db slope, and the sub is set at 24db slope, should i leave it there? I have sealed subs, and i read somewere to leave the slope at 12db is this correct? Thanks
That is perfect. You are ok.
HT Room: Panasonic PT-AE8000, Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Yamaha-RX-A3010 Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83, Sony BDP-S790, Audio Technica Tuntable, Mitsubishi S-VHS, 2 Def. Tech. Super Towers w 15" subs, 1 Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Cadence Presence, 2 Bose 901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, Velodyne SMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 Power Conditioners.
Two-Channel Room: XiangSheng Tube Preamp., Carver TFM-45 Amp. (375 W/Ch), Behringer EPX4000 Amp., Onkyo CD player, Denon Turntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 Super Tweeters, 2 DIY Folded Horn Super Towers with 15" Sub., 1 Modified AA HD-SUB12
Family Room: Mitsubishi 73" Diamond Series TV, Yamaha DSP-A3090 Rec., DirecTV HD-DVR, PS3, Zvox Speaker, 1 DIY 12" Sub.
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Old 02-23-2013, 07:10 PM   #67
Remo Remo is offline
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If the jumpers are removed from the speaker terminal for bi-amp setup this would make 2 separate circuits correct? What does this do to the impedance of each circuit.

Lets say you have speaker with a nominal impedance of 8 ohms and remove the jumpers for a bi-amp set up, would you now have two separate 16ohm circuits? If so would this not cut the amplifiers output that is rated into 8 ohms by half?

If my assumption is wrong, please enlighten me.
|| AVR - Onkyo TX-NR1009 || Amps - Emotiva XPA-2 / Emotiva IPS-1 (7 Channel) || TV - Misubishi WD60737 || BD Player - Sony BDP-S790 || CD Player - Sherbourn CD-1 || Gaming - Modified PS3 Fat / Modified Wii / PS4 || Main L&R - Polk Audio LSi9 || Center - PolkAudio LSiC || Surround - Polk Audio Monitor OWM3 || Subwoofer - Polk Audio PSW505 || Harmony Ultimate Remote ||
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Old 02-24-2013, 07:35 AM   #68
Big Daddy Big Daddy is offline
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Quote:
Originally Posted by Remo View Post
If the jumpers are removed from the speaker terminal for bi-amp setup this would make 2 separate circuits correct? What does this do to the impedance of each circuit.

Lets say you have speaker with a nominal impedance of 8 ohms and remove the jumpers for a bi-amp set up, would you now have two separate 16ohm circuits? If so would this not cut the amplifiers output that is rated into 8 ohms by half?

If my assumption is wrong, please enlighten me.
The impedance load to each amplifier will not necessarily change. Remember that AC impedance is not a pure DC resistance. It varies with frequency. The impedance of the low frequency (LF) section is low at lower frequencies and increases significantly at the higher frequencies. As a result the LF section draws more power from the amplifier as the frequency decreases. However, the impedance of the high frequency (HF) section decreases as the frequency increases, so the HF section draws less power from the amplifier as the frequency decreases.

If the LF section has a nominal impedance of 8 ohms in its frequency range and the nominal impedance of the HF section is also 8 ohms in its frequency range, each amplifier in a bi-amp situation still sees approximately the same load. This is a simplistic explanation, but should get the point across.

When you are bi-amping a speaker, the amplifier that is driving the HF section is doing a lot less work than when a single amplifier was also driving the LF section of the speaker, where most of the power is used. This will give the amplifier some additional headroom. The added headroom is nice, but HF section does not need a lot of power.

The amplifier that is driving the LF section still has do about the same amount of work as a single amplifier because the HF section uses much less power than the LF section. As a result, the performance difference in the LF section is pretty small.

Moral of the story: Passive bi-amplification has some benefits, but the benefits are small. To take full advantage of bi-amplification, you need to remove the internal crossover of the speaker and use an external active (powered) crossover before the amplifiers. That is called active bi-amping.
HT Room: Panasonic PT-AE8000, Epson 1080UB Proj., Mitsubishi 65" Diamond Series HD TV, Yamaha-RX-A3010 Rec., CinePro 6-Ch. Amp. (350 W/Ch, 8 Ohm), Proton D1200 Amp., Behringer EP4000 & EPX3000 Amps., Oppo BDP-83, Sony BDP-S790, Audio Technica Tuntable, Mitsubishi S-VHS, 2 Def. Tech. Super Towers w 15" subs, 1 Def. Tech. Center & 1 Martin-Logan Center, 2 Def. Tech. Surr. & 2 PSB Surr., 2 Cadence Presence, 2 Bose 901 Rears, 2 Modified HSU 12" Subs, 1 ED DIY 12" Sub, 1 ED DIY 15" Sub, Velodyne SMS-1 Subwoofer Equalizer, DirecTV HD, Monster HTS 5000 & APC H15 Power Conditioners.
Two-Channel Room: XiangSheng Tube Preamp., Carver TFM-45 Amp. (375 W/Ch), Behringer EPX4000 Amp., Onkyo CD player, Denon Turntable, Yamaha Tuner, 2 Vintage Polk RTA-15TL Speakers, 2 LCY 100 Super Tweeters, 2 DIY Folded Horn Super Towers with 15" Sub., 1 Modified AA HD-SUB12
Family Room: Mitsubishi 73" Diamond Series TV, Yamaha DSP-A3090 Rec., DirecTV HD-DVR, PS3, Zvox Speaker, 1 DIY 12" Sub.

Last edited by Big Daddy; 02-25-2013 at 12:37 AM.
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Old 08-22-2013, 06:45 PM   #69
ezyl ezyl is offline
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Hi Guys, l just bumped into a problem this morning while playing low frequency test tones on my system. I was trying to hear/understand how the bass management in my receiver worked with respect to the main speakers and subwoofer. Let me explain,...

I went into my receiver menu and set main speakers to Small and crossover to 80Hz(Audessey chose 70). Just for the test, I set centre and surrounds speaker to none. Sub to ON.
Then I played frequency tones from BD player in stereo mode from 100Hz to let say 60.
When tones played from 80 to 100Hz all is good and the mains woofer are working it. But when I play below 80Hz, (my sub kicks in, all good) but i can still hear sound from my main speakers and its bass drivers are physically moving. So sound is still played by main speakers (AND subwoofer) even for tones below cutoff I've selected. Checked back on menu and Double Bass is OFF.

Is my understanding for crossover on bass management wrong or is my receiver faulty. Kindly help to advise on my setup as per my signature. Thank you in advance.
Display: SAMSUNG PS58C7000
AVR: ONKYO TX-SR608
Speakers: JAMO S606, S60 CEN, S60 SUR
Sub: JAMO SUB 250
BDP: PANASONIC DMP-BD75
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Old 12-17-2014, 03:19 PM   #70
BLindsay BLindsay is offline
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Thanks Big Daddy for posting this, I have recently decided I wish to build my own speaker (buy the drivers, build the cabinet and design the crossover) and it looks like I have a lot to read about crossovers, especially since I am looking to do a 4-way crossover
Projector: Optoma UHD60
Screen: 120" SilverTicket Fixed Frame
Power: Emotiva MC-700, XPA-3, 2x UPA-1
Fronts: Polk LSi15s (Upgraded crossovers & woofers)
Rears: Polk LSi7s
Center: Polk LSiC (Upgraded crossover)
Sub: Velodyne F1500R
Blu-ray: Xbox One S (for now)
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