Free Shipping on All Orders 1-866-764-1801

Vist our Online Store
+ Reply to Thread
Results 1 to 16 of 16
  1. #1

    Member Sales Rating: (16)

    Join Date
    Nov 2007
    Posts
    4,017

    Default Help explain what HT Bypass is for 2-channel preamps

    So, I'm looking at the new Audio Advisor catalog and am reading about the Parasound Halo P7 preamp and it has a feature called HT Bypass and Analog Bass Management.

    The description says the theater bypass mode makes it simiple to use the P7 and your digital surround sound receiver in the same system.

    How does that work?

    I'm confuzzled....:o

    H9: If you don't trust what you are hearing, then maybe you need to be less invested in a hobby which all the pleasure comes from listening to music.

  2. #2

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Location
    Long Island
    Posts
    14,790

    Default

    Instead of listening to two channel through a crappy receiver, you can use a separate preamp that shares the same amp and main speakers as your receiver. Using the HT Bypass input is different than using a regular input because it doesn't add any gain. So when you're using your receiver/prepro to watch a movie, the 2 channel pre acts like it's not even there.

    I'm sure if you google you can find a better explanation.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  3. #3

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Location
    Long Island
    Posts
    14,790

    Default

    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  4. #4

    Member Sales Rating: (16)

    Join Date
    Nov 2007
    Posts
    4,017

    Default

    Ah - thanks for the diagram - makes sense.....hmmmm....:D

    H9: If you don't trust what you are hearing, then maybe you need to be less invested in a hobby which all the pleasure comes from listening to music.

  5. #5

    Member Sales Rating: (0)

    Join Date
    Apr 2009
    Location
    Virginia
    Posts
    28

    Default

    Basically it by passes all the other electronic use in the HT that can add artifacts to the signal. THis way it gives you the cleanest signal to your speakers. :)

  6. #6

    Member Sales Rating: (5)

    Join Date
    Oct 2008
    Location
    SF Bay Area, CA
    Posts
    172

    Default Preamp before receiver ?

    In your diagram above, you might want to locate teh pre-amp before your receiver.

    With the setup as above, the volume on teh preamp is going to change teh output on regular home theater.

    Lets go thru this scenario with things hooked up in your diag. Lets say you have all your main and surround speakers calibrated with to 75db. Now on Saturday night, you sit down to listen to some regular 2-channel. You use the HT bypass on your receiver, so you are going to use the preamp to change volume on your left and right speakers. Now, when you go back to listening to the home theater, the volume on the left and right speakers have changed but not to your surrounds.

    So, unless you have a mark on your preamp for trh reference volume- this will be a problem.

  7. #7

    Member Sales Rating: (10)

    Join Date
    Jun 2007
    Location
    Cape Cod, Massachusetts
    Posts
    1,286

    Default

    Quote Originally Posted by artinaz View Post
    In your diagram above, you might want to locate teh pre-amp before your receiver.

    With the setup as above, the volume on teh preamp is going to change teh output on regular home theater.

    Lets go thru this scenario with things hooked up in your diag. Lets say you have all your main and surround speakers calibrated with to 75db. Now on Saturday night, you sit down to listen to some regular 2-channel. You use the HT bypass on your receiver, so you are going to use the preamp to change volume on your left and right speakers. Now, when you go back to listening to the home theater, the volume on the left and right speakers have changed but not to your surrounds.

    So, unless you have a mark on your preamp for trh reference volume- this will be a problem.
    This would be true if the pre-amp does not have an HT bypass, but what you're saying is not true in this case. The purpose of the HT bypass is to allow the pre-amp to exist outside of the receiver loop.
    Speakers: Polk LSi15
    Pre: Adcom GFP-750 with HT Bypass
    Amp: Pass Labs X-150
    CD/DVD Player: Classe CDP-10
    Interconnects: MIT Shortgun S3 Pro XLR
    Speaker cables: MIT MH-750 bi-wire
    TT:Micro Seiki DD-35
    Cartridge:Denon DL-160
    Phono Pre:PS Audio GCPH

  8. #8

    Member Sales Rating: (4)

    Join Date
    Dec 2004
    Location
    flower mound, tx
    Posts
    4,337

    Default

    Bottom line, no simulated surround, no music hall "effects", no extra
    processing. STEREO! Parasound knows how to do this better than most
    other guys. My older P/sp1000 pre does a pretty decent job of 2 channel.
    "The legitimate powers of government extend to such acts only as are injurious to others. But it does me no injury for my neighbour to say there are twenty gods, or no god. It neither picks my pocket nor breaks my leg." --Thomas Jefferson

  9. #9

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Location
    Long Island
    Posts
    14,790

    Default

    There's no way I'd want my receiver to corrupt my 2 channel listening. My DacMagic + Goldpoint passive makes my Onkyo sound like junk. :)
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  10. #10

    Member Sales Rating: (22)

    Join Date
    Oct 2008
    Location
    Directly over the center of the earth in Olathe Kansas
    Posts
    5,825

    Default

    Please excuse me if I am highjacking this thread.

    What would be a good entry level Pre (with Bypass) for a newbie that is not going to break the bank?

    I want to do what was described above.

    I made the first step by not using my AVR Phono by going to a external Phono pre and the difference was absolutely amazing.

    Also, would a budget minded pre have a good enough or better DAC than my AVR (Denon 2808) or would I want to add an external DAC to the Pre. For now I would like to use the analog outs on my PS3( I know, PS3 is probably not a good CDP)

    Thanks,
    Speakers: SDA-1C (most all the goodies)
    Preamp: Joule Electra LA-150 MKII SE
    Amp: Wright WPA 50-50 EAT KT88s
    Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
    Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
    Cables: Mits S3 IC and Spk cables| PS Audio PCs

    Ofc: Wright WLA12 preamp: Anthem Amp 1: Pio Elite DV-79AVI: Airport Express: CAL Sigma II DAC: PA LS90 sonicaps and mills

  11. #11

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Location
    Long Island
    Posts
    14,790

    Default

    If you can go passive: http://www.goldpt.com/sa2.html
    I have the 4 input version which is no longer made.

    A nice budget DAC is the DacMagic by Cambridge.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  12. #12

    Member Sales Rating: (22)

    Join Date
    Oct 2008
    Location
    Directly over the center of the earth in Olathe Kansas
    Posts
    5,825

    Default

    Thanks Face
    Speakers: SDA-1C (most all the goodies)
    Preamp: Joule Electra LA-150 MKII SE
    Amp: Wright WPA 50-50 EAT KT88s
    Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
    Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
    Cables: Mits S3 IC and Spk cables| PS Audio PCs

    Ofc: Wright WLA12 preamp: Anthem Amp 1: Pio Elite DV-79AVI: Airport Express: CAL Sigma II DAC: PA LS90 sonicaps and mills

  13. #13

    Member Sales Rating: (10)

    Join Date
    Dec 2005
    Location
    Safely in my Faraday cage
    Posts
    1,840

    Default

    In the Diag, the CD-out goes straight to the 2 ch Pre via analog cable. You would be using your onboard DAC(s) in your player. Also in that config, you would be utilizing only the volume circuit in the Pre. The Receiver would not be in the chain at all. CD>analog>Pre>analog>Amp>Speaker

    When you use the HT, set the Pre to bypass, and whatever signal is presented will be passed through to the amp without being attenuated. The level would be controlled by the Rec's pre/volume control settings only. Make sure it's a Pre-Out from the Receiver and not a fixed line level.
    -Ignorance is strength -

  14. #14

    Member Sales Rating: (1)

    Join Date
    Jan 2003
    Posts
    197

    Question Need Help!!

    Okay guys-I can see there's a ton of brain power here and I really need help. Here's the scenario. I have a Marantz SR-9200 receiver, complete LSI surrounds with a new SVS cylinder sub. Outside on my deck I have 4-Rockustics speakers. I want to utilize the Multi-room option. But, here's the catch, I have a Mac Mini computer, which only does digital output and not analog and multi room will only work with analog. So I bring in my PS Audio DAC from another setup connect it to the Mac Mini and connect it to the receiver. Voila, it works great outside, but hardly sounds sterling inside because I realize it's probably double processing, via the DAC and what's inside the Marantz receiver. I know I could use the signal direct button on the Marantz for inside play,but that negates use of my SVS sub, which is not a good option. I know I could use the 7.1 input and put a Y connector on the sub, but 7.1 doesn't work for multi-room. I'm planning on getting the Parasound model 2125 amp to power the outside speakers, not a biggie. But I can't figure out how to solve this problem. My only solution so far is to pick up a less expensive DAC (Dacmagic) keep it in the mix seasonally and then disconnect it when I'm not using the outside rig. If you guys have any ideas I would appreciate it. As you can see, I'm "Pulling My Hair Out"! Thanks, DJ

  15. #15

    Member Sales Rating: (1)

    Join Date
    Jan 2003
    Posts
    197

    Default

    No ideas for a solution to my problem? Anybody?

  16. #16

    Member Sales Rating: (22)

    Join Date
    Oct 2008
    Location
    Directly over the center of the earth in Olathe Kansas
    Posts
    5,825

    Default

    Might try starting a new thread. I can't help but am interested in the outcome.
    Speakers: SDA-1C (most all the goodies)
    Preamp: Joule Electra LA-150 MKII SE
    Amp: Wright WPA 50-50 EAT KT88s
    Analog: Marantz TT-15S1 MBS Glider SL| Wright WPP100C Amperex BB 6er5 and 7316 & WPM-100 SUT
    Digital: Mac mini 2.3GHz dual-core i5 8g RAM 1.5 TB HDD Music Server Amarra (memory play) - USB - W4S DAC 2
    Cables: Mits S3 IC and Spk cables| PS Audio PCs

    Ofc: Wright WLA12 preamp: Anthem Amp 1: Pio Elite DV-79AVI: Airport Express: CAL Sigma II DAC: PA LS90 sonicaps and mills

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

     

Similar Threads

  1. Can any pre-amp be mod for HT bypass?
    By disneyjoe7 in forum Electronics
    Replies: 6
    Last Post: 03-09-2009, 05:36 PM
  2. To bypass or not to bypass?
    By Coblio in forum DIY, Mods & Tweaks
    Replies: 7
    Last Post: 11-05-2006, 10:29 PM
  3. 2 channel preamps...whatcha got?
    By trubluluc in forum Electronics
    Replies: 26
    Last Post: 09-02-2004, 06:23 PM
  4. What does a bypass cap actually do?
    By mingram1234 in forum Speakers
    Replies: 1
    Last Post: 04-01-2004, 08:37 PM
  5. How to bypass sub?
    By danielv in forum Subwoofer Hookup & Bass Management
    Replies: 1
    Last Post: 06-27-2002, 05:58 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts