Results 1 to 13 of 13

Thread: Mind Blown - 4670d in the home

  1. #1
    Super Moderator jblnut's Avatar
    Join Date
    Jun 2003
    Location
    Central Mass
    Posts
    910

    Mind Blown - 4670d in the home

    Well...I may have crossed over to the "other side". I've been here for about 2 decades now, dabbling mostly in vintage JBL home speakers (peaking with the 250Ti). I've never considered myself a horn guy all these years. The various Klipsch models have never really done it for me, and my own years spend in bands left me associating "Horn" with "PA System".

    Well that's all out the window now :-)

    Thanks to a new local member here who had been experimenting with various permutations of 4670 parts, I am now the owner of most of what he had. A very good (and strong) friend helped me get them all back to his basement man cave and we spent most of Saturday night spending equal amounts of time laughing at how good they were, and shaking our heads over all of the "audiophile" sacred cows that were getting slayed.

    For the initial setup I was using an old AudioArts 2-way crossover (analog and a little noisy) with a Yamaha 1/3 octave EQ ahead of it in the signal chain so I could smooth out some room nodes and remove a little of the horn sound around 1-3k. From there I used an old ATX 8x50 channel "whole house" amp on both the lows and highs. I didn't even have enough proper 1/4 -> RCA cables so a lot of the connections were using 1/4->RCA barrel connectors. It was a Frankenstein setup and would have made any card-carrying audiophile break out in laughter.

    That is, until the music started...

    O M G

    I thought I knew dynamics

    I thought I knew how a bass drum should sound

    I thought I knew how a trumpet should sound

    I thought I had accurate vocal reproduction in my own system

    In short, a favorite quote from GoT was playing over and over in my mind ... "You know nothing John Snow".

    :-)

    I am not even sure that I am going to mess with a digital xover like a DriveRack. The sound is just so well balanced that even with a little hiss between tracks, it's just stunning. There's nothing below about 30hz and there's nothing above 15khz. It's noisy and the imaging is not exactly holographic. But damn it's just addictive to listen to. Track after track we tried to trip up the system and find something it didn't do well. Our own "audiophile" speakers (I have Revel Salon 2's and he has Ariel 10Ts) were suddenly looking very, very overmatched for everything other than being able to smell Diana Krall's breath :-).

    It's a new world here in 2021 for me. Looking forward to a new journey into large format JBL horns!

    jblnut

  2. #2
    Member
    Join Date
    Aug 2017
    Location
    WDC USA
    Posts
    82
    Not familiar with ATX amps but if it has RCA connectors it is likely has a fairly high sensitivity often in the range of -10dbv. Your Yamaha EQ and AudioArts crossover are designed for amps with lower sensitivity in the range of +4dbv. Try turning the amp gains down by 14db or more and run your preamp level high and see if that doesn't cure your hiss problem.

    Quote Originally Posted by jblnut View Post
    ...
    For the initial setup I was using an old AudioArts 2-way crossover (analog and a little noisy) with a Yamaha 1/3 octave EQ ahead of it in the signal chain so I could smooth out some room nodes and remove a little of the horn sound around 1-3k. From there I used an old ATX 8x50 channel "whole house" amp on both the lows and highs. ...

    jblnut

  3. #3
    Super Moderator jblnut's Avatar
    Join Date
    Jun 2003
    Location
    Central Mass
    Posts
    910
    Yup - that's on the list (and it's long) of things that need to be done here, starting with some proper 1/4 - RCA cables. Just ordered those a few moment ago. The amp is very temporary and was just what I had kicking around (Thanks to Widget who sent it my way 10 years ago). . I think we're going to try tubes on the horn next and some monster Denon monos for the bass cabs.

    This is just a day 1 report and we're a lonnngggg way from the finish line...


    jblnut

  4. #4
    Administrator Robh3606's Avatar
    Join Date
    Apr 2003
    Location
    Rocinante
    Posts
    8,527
    See what happens when you add a sub! Think it's good now just wait!

    Rob
    "I could be arguing in my spare time"

  5. #5
    Super Moderator jblnut's Avatar
    Join Date
    Jun 2003
    Location
    Central Mass
    Posts
    910

    on the list...

    It's on the list somewhere between using a modern digital xover (DriveRack) and tubes for the horn. We both didn't think it really needed one after I bumped the lower sliders a few db on the EQ. They are in a treated concrete basement so there is zero resonance from wooden floors or walls to muddy things up. They hit very hard even into the upper 30's.

    But yeah, I have a sub using the SUB1500 driver (remember our "group purchase" all those years ago) on deck ready for duty....

    Oh, and I have two complete bass cabs here to try. One is loaded with 2226's (which is what we used this weekend) and another with 2035s. What differences can we expect when we try the 2035 loaded cabs ?



    jblnut

  6. #6
    Administrator Robh3606's Avatar
    Join Date
    Apr 2003
    Location
    Rocinante
    Posts
    8,527
    One is loaded with 2226's (which is what we used this weekend) and another with 2035s. What differences can we expect when we try the 2035 loaded cabs ?
    They are supposed to be interchangeable main differences is power handling. Curious to see what you find, I have used 2035's and found them to be good drivers.

    Rob
    "I could be arguing in my spare time"

  7. #7
    Administrator Mr. Widget's Avatar
    Join Date
    Apr 2003
    Location
    San Francisco
    Posts
    10,727
    Quote Originally Posted by jblnut View Post
    Well...I may have crossed over to the "other side".
    Welcome to the other side. Other than a pair of L100s I picked up along the way and recently gave to a buddy, all the JBLs I have had were horn loaded. The bigger the better!

    You may have ventured over to the other side, but I'll bet the journey is just beginning!

    Welcome into the Matrix.


    Widget

  8. #8
    Senior Member Eaulive's Avatar
    Join Date
    Aug 2009
    Location
    Back in Montreal
    Posts
    1,250
    Quote Originally Posted by jblnut View Post
    In short, a favorite quote from GoT was playing over and over in my mind ... "You know nothing John Snow".
    Right there... you made me crack... thanks!

    And yes... horns, see my avatar

    They give that "in your face" feeling that you don't get otherwise
    My avatar: 4520 loaded with 2225H on E140 frames,
    1x 2202H on custom front loaded horn, 2x 2426 on 2370.

  9. #9
    Senior Member
    Join Date
    Jun 2007
    Location
    Geelong, Australia
    Posts
    140
    Quote Originally Posted by Mr. Widget View Post
    Welcome to the other side. Other than a pair of L100s I picked up along the way and recently gave to a buddy, all the JBLs I have had were horn loaded. The bigger the better!

    You may have ventured over to the other side, but I'll bet the journey is just beginning!

    Welcome into the Matrix.


    Widget
    Agree 100% with widget the bigger the better. Large JBL Horn systems are simply the best.

  10. #10
    Senior Member
    Join Date
    Feb 2018
    Location
    Annapolis, MD
    Posts
    194
    Quote Originally Posted by jblnut View Post
    It's on the list somewhere between using a modern digital xover (DriveRack) and tubes for the horn. We both didn't think it really needed one after I bumped the lower sliders a few db on the EQ. They are in a treated concrete basement so there is zero resonance from wooden floors or walls to muddy things up. They hit very hard even into the upper 30's.

    But yeah, I have a sub using the SUB1500 driver (remember our "group purchase" all those years ago) on deck ready for duty....

    Oh, and I have two complete bass cabs here to try. One is loaded with 2226's (which is what we used this weekend) and another with 2035s. What differences can we expect when we try the 2035 loaded cabs ?



    jblnut

    You're welcomed to experiment as you wish. Personally, I wouldn't bother with the 2035s. They are the low-powered 2226 and built for $$$ reduction only. They use a 3" V.C. instead of a 4"

    If you like the sound of the 4670D, you'll love the sound of the 4675C. Ditch the 2380 horn for a 2360 and you'll be amazed at the difference. Personally, I'm not a fan of the 4670D and its all due to the 2380 horn...the rest I'm fine with.

  11. #11
    Super Moderator jblnut's Avatar
    Join Date
    Jun 2003
    Location
    Central Mass
    Posts
    910
    I'd love a pair of those larger horns. Anyone got a stash ?

    jblnut

  12. #12
    Junior Member
    Join Date
    Sep 2016
    Location
    Twin Cities
    Posts
    10
    Checking back in, interested in any updates or insights.

  13. #13
    Super Moderator jblnut's Avatar
    Join Date
    Jun 2003
    Location
    Central Mass
    Posts
    910
    Yes, we did some experiments with a DBX Venue 360 recently, and it was quite a surprise. Despite all of the digital wizardry of this device (including room analysis and many kinds of EQ), we just could not get it to sound as good as it does with a 30-40 year old analog crossover and EQ. This was hugely surprising and not expected. While the 360 does produce what could only be described as a "pleasant" sound, it totally crushes all of the magic that the system has without it.

    We're on the hunt for the larger horns now and another set of compression drivers so that we can have two complete sets of speakers. I am also trying to see if I can get an old friend to part with his JBL 18" pro subs so that we can get the lowest octave squared away here.

    It's been a lot of fun to play with these and it's a total 180 from the (Revel) sound I hear every day in my house. Jury is still out on the long term plan for these. I expect my enabler friend to keep one set of these. The other set may end up in my basement, or it might get re-skinned/re-cabineted (is that a word) so that it can pass the WAF test for my living room.

    I am looking out for K2 S9900's as well as I know these will have no issue meeting both my sonic and visual needs.

    jblnut

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. JBL XPL - Can't get them out of my mind...
    By Coolness in forum Lansing Product General Information
    Replies: 22
    Last Post: 04-09-2015, 08:31 AM
  2. Is sound only in the mind?
    By Akira in forum General Audio Discussion
    Replies: 3
    Last Post: 05-24-2008, 08:48 PM
  3. 4670D
    By Sam in forum Lansing Product General Information
    Replies: 1
    Last Post: 09-17-2006, 01:00 PM
  4. Any Experience With The 4670D ?
    By goodbalance in forum Lansing Product General Information
    Replies: 0
    Last Post: 08-31-2006, 09:54 PM
  5. The mind boggles !!!
    By jan_slagman in forum Lansing Product Technical Help
    Replies: 5
    Last Post: 02-28-2006, 11:10 AM

Posting Permissions

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