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

Vist our Online Store
+ Reply to Thread
Results 1 to 10 of 10

Thread: LS70 upgrading?

  1. #1

    Member Sales Rating: (0)

    Join Date
    Jan 2012
    Posts
    56

    Default LS70 upgrading?

    Hey you guys, It's been a while since I've been on these forums and just popping in to ask a few questions from those of you who know this speak?

    This GW find is what got me into audio (vintage audio specifically). About a year and a half ago I hooked these up and haven't looked back as these seem to be a great balance for both theater and old school 2 channel listening. I've since tried JBL L100's,JBL GHE 1000v's, ADS 810's,L710's,L910's, BA 150's,several Dahlquist models....and others. All these speakers have been at least very good to some actually being nicer than the LS70's (for one reason or another). Still....the footprint size,performance level,looks (shape) and the "Polk sound" have left these LS70's being my speakers that I use the most! (The sound stage for such a small footprint speaker can't help leave me impressed.)

    My priorities are because of this...I have a small run of wall space and a custom,low slung,audio stand that is getting close to completion. After some custom treatment to these speaks, the late '50's Danish look of the whole thing will be incredible and match well with our living room look. I'll end up keeping the best speakers (from what I have) and these look like they will be staying too....until my listening space changes dramatically

    What I've heard with comparisons to it's siblings suggests that these have a little room for improvement using some mods that kick there level of performance up a bit. What are the best things to do with these? I enjoy 'em,love the looks with this series, and after I finish them with walnut,throw on some mellow amber skirt lighting,carpet post elevated Wilkison Sandstone base,internals all they can be....there going to stick for a long,long time. (I'll post pics.)

    Gear I'll be running them with my just completed 15 receiver collection:

    Theater: Modern Onkyo AVR

    Two Channel (in rotation):
    1. Sansui G-9000
    2. Sanyo JCX 2900K
    3. Sansui 9090db
    4. Pioneer SX-1010
    5. Pioneer SX-1250
    6. Marantz 2325
    7. The early 70's "littlest brother" (to each brand of these) "Where performance quality just starts to compete with big bro".

    Is there a best approach with crossovers,capping,stuffing,etc....? Appreciate it and know several of you guys know both Polk....and older gear.
    Last edited by bd1886; 09-09-2012 at 09:54 PM. Reason: Clean up.

  2. #2

    Member Sales Rating: (0)

    Join Date
    Jan 2012
    Posts
    56

    Default

    I've been working real hard learning and wheeling and dealing to get these receivers.....or I normally couldn't have afforded so many nice ones in such a short period of time. (Please forgive me my pride in that list.) The learning has been a blast and settling in to enjoying it....with some maxed out LS70's. Bump

  3. #3

    Member Sales Rating: (0)

    Join Date
    Jan 2009
    Location
    Seattle
    Posts
    260

    Default

    Almost everyone on this site has a long list of gear. Its all part of the fun. The crossover upgrade is very, very easy on the LS70s. Just one cap and one resistor. I used Sonicap and mills. Difference was not huge but certainly noticeable; however, I only have about 20 hours on them since the upgrade and the amp I am using is pretty low end. See below and have fun.

    BTW, the LS70 schematic is in the vintage speakers forum. I should also note that I did the crossovers without disconnecting the drivers.

    Name:  LS70.jpg
Views: 699
Size:  168.8 KB
    Last edited by gwg_97; 09-09-2012 at 11:51 PM.
    Carver A-760x
    Outlaw Audio M200
    Kenwood Basic M2A x 2
    Yamaha RXV 665
    Polk SDA 1C x 2 (mods in progress)
    Polk Monitor 10B
    Polk Monitor 5B x 2
    Polk LS70
    Polk CS350
    Polk CSi5
    HSU VTF-3 MK4
    DIY Canare 4s11 Cables

  4. #4

    Member Sales Rating: (0)

    Join Date
    Oct 2004
    Location
    North Texas
    Posts
    6,130

    Default

    Spike them and dynamat the drivers. Those are both cheap fixes. You could look into crossover upgrades (new caps) and I bet that would really help these. If you end up wanting to do some mods to the crossovers and are a little skiddish of damaging them, I've got an extra pair of crossovers for sale.

    I really don't see the point of any upgrades past those. Maybe some treatment on the back wall of the cabinet like black hole but other than that, there isn't much to do. Your best bet is the spiking; that made a noticeable improvement in mine.
    Usher CP-6311, Shuguang S200MK, Shuguang S845MK, Pioneer BDP-51fd, Essence Audio HDACC, Douglas IC's, Douglas Alpha bi-wire SC's, Pangea/Douglas PC's, Epson 8100

  5. #5

    Member Sales Rating: (0)

    Join Date
    Jan 2009
    Location
    Seattle
    Posts
    260

    Default

    Quote Originally Posted by DSkip View Post
    Spike them and dynamat the drivers. Those are both cheap fixes. You could look into crossover upgrades (new caps) and I bet that would really help these. If you end up wanting to do some mods to the crossovers and are a little skiddish of damaging them, I've got an extra pair of crossovers for sale.

    I really don't see the point of any upgrades past those. Maybe some treatment on the back wall of the cabinet like black hole but other than that, there isn't much to do. Your best bet is the spiking; that made a noticeable improvement in mine.
    Hmmm, did the spikes tighten up the bass a bit? I find that they are little bass heavy for me as is.
    Carver A-760x
    Outlaw Audio M200
    Kenwood Basic M2A x 2
    Yamaha RXV 665
    Polk SDA 1C x 2 (mods in progress)
    Polk Monitor 10B
    Polk Monitor 5B x 2
    Polk LS70
    Polk CS350
    Polk CSi5
    HSU VTF-3 MK4
    DIY Canare 4s11 Cables

  6. #6

    Member Sales Rating: (0)

    Join Date
    Oct 2004
    Location
    North Texas
    Posts
    6,130

    Default

    Quote Originally Posted by gwg_97 View Post
    Hmmm, did the spikes tighten up the bass a bit? I find that they are little bass heavy for me as is.
    Helped throughout the entire range. I did dynamat my drivers, but I'm not sure how much it really helped to be honest.

    Did the crossover upgrades help the tweeters any? That's become my biggest complaint with the LS series; it seems like something is lacking in the tweeters.
    Usher CP-6311, Shuguang S200MK, Shuguang S845MK, Pioneer BDP-51fd, Essence Audio HDACC, Douglas IC's, Douglas Alpha bi-wire SC's, Pangea/Douglas PC's, Epson 8100

  7. #7

    Member Sales Rating: (0)

    Join Date
    Oct 2010
    Posts
    5

    Default

    Quote Originally Posted by DSkip View Post
    ...I did dynamat my drivers...
    What exactly do you mean by this? I have a pair of LS70's as well.

  8. #8

    Member Sales Rating: (0)

    Join Date
    Jan 2012
    Posts
    56

    Default

    Right on....this is exactly what I needed to get these moving forward! I have some huge old bronze lamp phinals that will be perfect carpet spikes and now to round up parts. I'll post pics once I get it all done. Thanks Gents!

  9. #9

    Member Sales Rating: (0)

    Join Date
    Jan 2009
    Location
    Seattle
    Posts
    260

    Default

    Quote Originally Posted by DSkip View Post
    Helped throughout the entire range. I did dynamat my drivers, but I'm not sure how much it really helped to be honest.

    Did the crossover upgrades help the tweeters any? That's become my biggest complaint with the LS series; it seems like something is lacking in the tweeters.
    Thanks! While I didn't have a lot of time with them (stock) before the upgrade, I'd say it was a definite improvement (improvement in overall clarity). I'm guessing it will only get better with some time on those caps.
    Carver A-760x
    Outlaw Audio M200
    Kenwood Basic M2A x 2
    Yamaha RXV 665
    Polk SDA 1C x 2 (mods in progress)
    Polk Monitor 10B
    Polk Monitor 5B x 2
    Polk LS70
    Polk CS350
    Polk CSi5
    HSU VTF-3 MK4
    DIY Canare 4s11 Cables

  10. #10

    Member Sales Rating: (0)

    Join Date
    Jan 2009
    Location
    Seattle
    Posts
    260

    Default

    I forgot to mention that I needed to add a couple of 1" stand-offs to the pcb/binding post cup so that the backside of the binding posts could clear that large cap. No big deal.
    Carver A-760x
    Outlaw Audio M200
    Kenwood Basic M2A x 2
    Yamaha RXV 665
    Polk SDA 1C x 2 (mods in progress)
    Polk Monitor 10B
    Polk Monitor 5B x 2
    Polk LS70
    Polk CS350
    Polk CSi5
    HSU VTF-3 MK4
    DIY Canare 4s11 Cables

Thread Information

Users Browsing this Thread

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

     

Similar Threads

  1. Wanted One port for LS70
    By attym in forum Wanted (WTB) Classifieds
    Replies: 1
    Last Post: 02-04-2012, 12:15 AM
  2. Need Help LS70 Update
    By Earthy in forum Vintage Speakers
    Replies: 8
    Last Post: 03-08-2011, 09:20 PM
  3. CL: LS70 in Vienna VA
    By skrol in forum Vintage Speakers
    Replies: 0
    Last Post: 01-16-2010, 11:19 PM
  4. LS70 problem
    By modran in forum Troubleshooting
    Replies: 0
    Last Post: 03-06-2004, 03:43 AM
  5. Ls70
    By blankford in forum Flea Market
    Replies: 1
    Last Post: 01-26-2003, 02:00 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