Agoraquest Logo
The only place for the Sony Enthusiast Free Member Registration | Login | Contact Us | Quick Search Forum   
Main Menu
  • Home
  • Topics
  • Forums
  • Reviews
  • The Top
  • Web Links
  • File Downloads
  • Photo Gallery
  • Archived Articles
  • Media Center
  • Useful Sections
  • Sony Issues
  • Sony Alerts
  • Senior Members
  • Premium Members
  • eBay Sony Auction
  • Search Site
  • About Us
  • Recommend Us
  • Members List
  • Bookmark this Page

    Additional Features
  • Linking to Us
  • Owner Manuals
  • Calender of Events
  • Contact Us
  • Stock Market
  • Agorasearch
  • Break It Down Blog

  • Sponsors




    Who's Online
    Currently Online
    Visitors:198
    Members:0
    Total of:198 users

    MemberLogged
    Most Online Users
    Visitors:980
    Members:1
    Total of:981 online users
    October 17, 2013, 10:29 pm

    Your Current Status
    You are Anonymous user. Register for free by clicking here.

     Inbox
    Log in to check your private message


      
    Moderated By: Toli
    Agoraquest Forum Index » » Getting Started/Building a Home Theater
      
    Connecting 4 Amp Speakers to a DA-7100ES Dashboard
    Replies: 16 | Views: 2,183
    Last Reply: January 26, 2006, 3:11 pm

    View Printable Version of this thread
    Members below have participated in this thread
    Maxxwire | Timb | jehill | sdb |
    This thread topic spans 2 pages - You are currently on page 1
    NEXT>> (1 | 2 )
    Search other threads for related issues/solutions: or use Advance Forum Search
    Get the latest Exclusive Sony News by Joining our RSS Feed or Get RSS Via Email
    Author Connecting 4 Amp Speakers to a DA-7100ES
    sdb

    Rank: Sony Fan


    Joined: Nov 27, 2005
    Posts: 4
    From: NYC

      Posted: 2006-01-23 23:13

    Hi,

    I have ordered a DA-7100ES to replace my DAV-C900, which came with 4-AMP speakers. I realize these speakers are 'challenged', but I am upgrading in bits and pieces.  I realize that I can't connect the woofer that came with DAV-C900, but I have an active woofer from another system that should do well in that category.

    I know the 7100 has a switch to enable 4 AMP speakers, but I found an article on the audioholics.com:

    http://www.audioholics.com/FAQs/4-ohmspeakersreceiver.php

    that indicates not only do I not need to do this, but that it might not be the best idea.  They are not 'Sony' friendly over there, so I thought I would gather opinions here.

    Some of this advice is related to the efficiency rating of the speakers, which I can't find in the manual. Ideally, these should be high-efficiency speakers. And I assume the 7100ES would fall into the 'high-end' category, given in the table in the article.

    Thanks for any and all suggestions.

    Scott


    [ This message was edited by: sdb on 2006-01-23 23:15 ]


       


    Maxxwire
    Moderator
    Premium Member

    Rank: Sony Adept


    Joined: Aug 29, 2002
    Posts: 26071
    From: Portland, Oregon - USA

      Posted: 2006-01-24 01:13

    Scott- That's quite a jump from the DAV C900 to the DA7100ES! You are in for a real treat!

    I am assuming that you meant 4 Ohm speakers and not 4 AMP speakers in your post. The speakers that come with the DAV C900 are not only 4 ohm, but are also very low efficiency down in the low 80's dB SPL if memory serves.

    The bottom line is that if you can hold the volume down during this stage of transition you can run those 4 speakers.

    The only danger is turning the DA7100ES up too loud since these speakers require about 4 times as much power to get the same volume as an average 90 dB SPL efficient speaker would.

    I would advise you to replace these speakers with 8 ohm 90 dB SPL or higher efficient speakers as soon as you are able, but until then if you must run the 4 ohm speakers keep the volume at very moderate levels in order to protect your new DA7100ES!

    ~Maxx~

    -----------------
    A Satisfied Sony Fan Since 1974!



    The OCCC Furu-Charged Sony DB 930


         
    sdb

    Rank: Sony Fan


    Joined: Nov 27, 2005
    Posts: 4
    From: NYC

      Posted: 2006-01-24 05:17

    Hi Maxx,

    Yes, I am looking forward to the improvement very much, as you can imagine.

    Yes, of course I meant 4 Ohm speakers, sorry. Thanks for the advice.

    Are you saying that even if I use the 4 Ohm switch on the receiver, that I risk damaging it with too high a volume level?

    Thanks again,
    Scott




       
    Maxxwire
    Moderator
    Premium Member

    Rank: Sony Adept


    Joined: Aug 29, 2002
    Posts: 26071
    From: Portland, Oregon - USA

      Posted: 2006-01-24 14:47

    Just be very careful with the volume levels when using the speakers from the DAV C900 because even if you do use the 4 ohm switch on the DA7100ES it will still take about 160 wpc to produce the same volume level as 40 wpc would with average efficiency speakers.

    ~Maxx~

    -----------------
    A Satisfied Sony Fan Since 1974!



    The OCCC Furu-Charged Sony DB 930


         
    Timb

    Rank: Sony Devotee


    Joined: Sep 15, 2002
    Posts: 65
    From: Silicon Valley, CA; USA

      Posted: 2006-01-24 14:49

    Good comment Maxxwire, about the power requirements for 4 Ohm speakers.

    I'm driving my old 4 ohm (86 db SPL) Celestion 7000s as front L/R speakers with my DA7100ES and do have the 7100 switch set for 4 ohm. 

    So far I feel comfortable with the levels I'm driving them to as I'm in an apartment setting with an imposed restraint to keep from blowing holes in the neighbor's walls. So far, so good. 

    Tim 



       
    jehill
    Premium Member

    Rank: Sony Senior Advisor


    Joined: Mar 13, 2003
    Posts: 14282
    From: Sewell, NJ

      Posted: 2006-01-24 15:00



    There is less risk of damaging the receiver if the impedance switch is in the 4 ohm position because the protective setpoints are more restrictive.  If you leave the switch in the 8 ohm position, there will be more headroom or reserve power available, but the protective setpoints will be less restrictive because the reciever thinks that 8 ohm speakers are connected.  Regardless of which position you place the switch in, if you keep the volume down to reasonable levels, you shouldn't have a problem.  Its when you get aggressive with the volume control that you start to have problems.  If you gradually increase the volume, letting  the amps stabilize each time, eventually you may exceed the protective limits and get the PROTECT message.  That's not a problem, just back off on the volume control setting.  After about a half hour or so, you should be back in business.

    -----------------
    -John

    Sony A/V System: KDL-55XBR8, BDP-S550 and AVD-LA2500PKG, consisting of AVD-C70ES Super Audio CD/DVD Receiver, 4 SS-LA500ED surround speakers, 1 SS-LAC505ED center channel speaker and 1 SA-WD200 Active Subwoofer


       
    Maxxwire
    Moderator
    Premium Member

    Rank: Sony Adept


    Joined: Aug 29, 2002
    Posts: 26071
    From: Portland, Oregon - USA

      Posted: 2006-01-25 03:12



    • Member Quote

    On 2006-01-24 14:49, Timb wrote: I'm driving my old 4 ohm (86 db SPL) Celestion 7000s as front L/R speakers with my DA7100ES and do have the 7100 switch set for 4 ohm.



    So far I feel comfortable with the levels I'm driving them to as I'm in an apartment setting with an imposed restraint to keep from blowing holes in the neighbor's walls. So far, so good.


    Tim- It sounds like you are being very responsable running the low efficiency Celestion speakers with your DA7100ES. BTW how does this pairing sound?

    ~Maxx~

    -----------------
    A Satisfied Sony Fan Since 1974!



    The OCCC Furu-Charged Sony DB 930


         
    sdb

    Rank: Sony Fan


    Joined: Nov 27, 2005
    Posts: 4
    From: NYC

      Posted: 2006-01-25 10:00

    Just wanted to thank you all for your help. The 7100 arrived yesterday, and I'm already in heaven.

    Thanks once again,
    Scott



       
    Timb

    Rank: Sony Devotee


    Joined: Sep 15, 2002
    Posts: 65
    From: Silicon Valley, CA; USA

      Posted: 2006-01-25 12:38

    re: BTW how does this pairing sound?

    Maxx, they virtually sing. The soundstage is continuous from left to right and extends backwards and somewhat forward of the speaker's actual position. The mids are open and the highs are silky and transparent to my ear. I'm pleasantly surprised by the bass as the 7000's were not known for their bass response. It's clear and not boomy.

    I must admit to some placement "engineering" as I was shifiting off the 9000 to the 7100 receiver. The Celestion 7000s have a wood base, with metal points to set right on the wood flooring that "connect to the room", but while re-reading the instructions for setup (something I do every few years in case I've overlooked something) I note that they recommend 'blue tack' between the speaker and the base to "connect" the speaker sonically to the base. I'd not done that before, so I zipped down to home depot and got some museum putty. I also re-measured the speaker placement from the back wall and adjusted it to the recommended 6" for both. (One WAS a bit closer to the wall than the other)

    I wish I had had the presense of mind to do this "adjustment" while the 9000 was still driving the Celestions so I could compare the result fairly. The sound really opened up the minute I turned the 7100 on. Now with a couple of weeks to settle in, I think it's even better.

    I'm gonna guess that the putty dots made more difference than moving the speakers an inch up and back, but sometimes that's all it takes so go figure.

    Anyway, I'm really enjoying the Celestions but AM afraid to go audition any new speakers as 'the cascade' might go further than the receiver/dvd/HD-TV chain that is now underway.

    Regards,
    Tim


       
    Maxxwire
    Moderator
    Premium Member

    Rank: Sony Adept


    Joined: Aug 29, 2002
    Posts: 26071
    From: Portland, Oregon - USA

      Posted: 2006-01-25 15:38



    • Member Quote

    On 2006-01-25 12:38, Timb wrote: I wish I had had the presense of mind to do this "adjustment" while the 9000 was still driving the Celestions so I could compare the result fairly.

    I'm gonna guess that the putty dots made more difference than moving the speakers an inch up and back, but sometimes that's all it takes so go figure.


    Tim- Which "9000" are you refering to?

    Decoupling the Celestions from their rigidly coupled bases with the putty seems to have had a dramatic impact on their sound.

    I had a similar experience when I switched from rigid coupling to decoupling with my JBL speakers.

    ~Maxx~

    -----------------
    A Satisfied Sony Fan Since 1974!



    The OCCC Furu-Charged Sony DB 930


         
    Timb

    Rank: Sony Devotee


    Joined: Sep 15, 2002
    Posts: 65
    From: Silicon Valley, CA; USA

      Posted: 2006-01-25 15:51

    re: Tim- Which "9000" are you refering to?

    My old TA-E9000ES/TA-N9000ES that I replaced with the 7100.

    Tim


       
    Maxxwire
    Moderator
    Premium Member

    Rank: Sony Adept


    Joined: Aug 29, 2002
    Posts: 26071
    From: Portland, Oregon - USA

      Posted: 2006-01-25 23:36

    Oh, now I understand. I hope that moving from Sony's top of the line Analog seperates to its current top of the line Digital Receiver was a smooth one.

    I gather from your Posts that you prefer the sound of the DA7100ES.

    ~Maxx~

    -----------------
    A Satisfied Sony Fan Since 1974!



    The OCCC Furu-Charged Sony DB 930


         
    Maxxwire
    Moderator
    Premium Member

    Rank: Sony Adept


    Joined: Aug 29, 2002
    Posts: 26071
    From: Portland, Oregon - USA

      Posted: 2006-01-25 23:46

    Tim- Are your Celestion 7000's Hybrid Ribbon Speakers?

    ~Maxx~

    -----------------
    A Satisfied Sony Fan Since 1974!



    The OCCC Furu-Charged Sony DB 930


         
    Timb

    Rank: Sony Devotee


    Joined: Sep 15, 2002
    Posts: 65
    From: Silicon Valley, CA; USA

      Posted: 2006-01-26 00:26

    re: Hybrid Ribbons

    Yes, that's them!

    As far as a smooth transition, everything has gone fine.

    And yes, I do like the sound of the 7100 over the 9000s, although the 9000s aren't anything to sneeze at.

    Tim


       
    Maxxwire
    Moderator
    Premium Member

    Rank: Sony Adept


    Joined: Aug 29, 2002
    Posts: 26071
    From: Portland, Oregon - USA

      Posted: 2006-01-26 01:41

    Tim- This adds a whole new dimention to what you have said about the sound of your DA7100ES as you are the first person that I know of around here who has paired this Digital Receiver with Hybrid Ribbon speakers.

    ~Maxx~

    -----------------
    A Satisfied Sony Fan Since 1974!



    The OCCC Furu-Charged Sony DB 930


         
    This topic thread spans 2 pages - You are currently on page 1
    NEXT>> (1 | 2 )


    Advance Features
      
    Jump To:
    Locations 
of visitors to this page


    All logos and information in this site are property of their respective owner. The comments are property of their posters. This website www.agoraquest.com, Claudio Meira and Agoraquest, LLC is not tided in any form to the Sony Corporation (www.sony.com). This unoffical website is just place where Sony products are reviewed among the general public. Sony is a registered of Sony, Inc. "PlayStation", "PlayStation2", the PlayStation "PS" logo, and all associated logos/graphics. "Agoraquest, LLC" and "agoraquest.com" are associated exclusively with agoraquest.com, and are NOT associated in ANY way with Sony Electronics, Inc. To view the privacy policy, please click here and to view the terms of use, please click here. If you have any further questions, please contact using our online form.