Beam Blocker Question Please.

Discussion in 'Amp Central Station' started by gentlyweeping, Aug 7, 2021.

  1. gentlyweeping

    gentlyweeping Tele-Meister

    Posts:
    140
    Joined:
    Dec 21, 2013
    Location:
    Mpls/St. Paul, MN
    Well, after occasionally considering Weber Beam Blockers for many years I thought I'd give one a try.

    I use a HRD lV for the outdoor stuff and put the Beam Blocker in there.
    Yesterday we did an outdoor show and I had a significant loss of bottom end.
    I had to crank the bass knob to about 10 and it didn't do much to increase bottom end.

    My question is...
    Anybody else experience this loss of bass when using a Beam Blocker?
    I can't really replicate the experience here in my tiny townhome cause it would need to be LOUD.

    I've experimented with the signal chain (the same pedals I've used for years) but don't hear a problem there.
    Gave the tubes the tap test and let them run for a few hours. They look very healthy in a dark room.

    We have another outdoor show coming up and I'm tempted to remove the Beam Blocker before then.

    Experiences anybody??
    Thanks!
     
    uriah1 likes this.
  2. Timbresmith1

    Timbresmith1 Tele-Afflicted

    Posts:
    1,452
    Joined:
    Oct 1, 2010
    Location:
    Central TX
    Silly question, but is the speaker polarity the same as before you installed the blocker?
     
  3. beanluc

    beanluc Tele-Afflicted

    Age:
    51
    Posts:
    1,686
    Joined:
    Aug 27, 2020
    Location:
    California Bay Area
    Not me, but it sure sounds like a case of cure worse than the disease.

    Could it simply be that you're listening to it in an off-axis position and hearing way more highs than ever? Like, maybe before, you were never in the beam and never heard all this treble?
     
  4. cbnutt

    cbnutt Tele-Afflicted

    Age:
    59
    Posts:
    1,334
    Joined:
    Jun 7, 2006
    Location:
    Lebanon Missouri
    Mine helped tame the highs, harshness , try it at another gig , may have just been a weird day .
     
    Timbresmith1 likes this.
  5. Timbresmith1

    Timbresmith1 Tele-Afflicted

    Posts:
    1,452
    Joined:
    Oct 1, 2010
    Location:
    Central TX
    Low-end outdoors can be tough without a lot of juice behind it.
     
    Wally, guitar_paul1, Peegoo and 3 others like this.
  6. gentlyweeping

    gentlyweeping Tele-Meister

    Posts:
    140
    Joined:
    Dec 21, 2013
    Location:
    Mpls/St. Paul, MN
    Not silly. Uh Oh. I have the red/black wire to the speakers + terminal and the plain black to the - terminal. I better google to see if it's correct. Thanks for the question!
     
    Timbresmith1 likes this.
  7. Fluddman

    Fluddman Tele-Holic

    Posts:
    670
    Joined:
    Apr 30, 2010
    Location:
    Sydney, Australia
    I don't think the beam blocker would effect the bass at all. I think it was because it was an outside gig.
     
  8. wabashslim

    wabashslim Friend of Leo's

    Age:
    70
    Posts:
    2,817
    Joined:
    Nov 26, 2005
    Location:
    Sonorous Desert
    Makes no difference whatsoever.

    Have you gigged this amp outdoors before? How about the placement - up on a stand/case/chair instead of the floor or near a corner? All amps go dead outside without the indoor wall reflections you're probably used to. I can testify the beam blockers have nothing to do with it, they just ease the on-axis laser blasting to whoever's standing in front.
     
  9. MilwMark

    MilwMark Doctor of Teleocity Ad Free Member

    Posts:
    12,928
    Joined:
    Apr 29, 2013
    Location:
    near Arnold's
    The HRD IV is quite dark relative to its predecessors. I honestly can’t imagine needing to tame highs.
     
  10. Zoso420

    Zoso420 Tele-Meister

    Age:
    35
    Posts:
    481
    Joined:
    May 31, 2021
    Location:
    Chicago
    If you want to increase bass response then make sure your amp is directly connected to the stage. Directly coupled to the stage will produce the most bass. Being outdoors your bass response is going to take a nose dive and you have to push some major air to make up for it.
     
    Wally, Timbresmith1 and wabashslim like this.
  11. Timbresmith1

    Timbresmith1 Tele-Afflicted

    Posts:
    1,452
    Joined:
    Oct 1, 2010
    Location:
    Central TX
    Speaker polarity DOES make a difference. A speaker that “Pulls” on the initial attack sounds different than a speaker that moves forward on the initial attack.
     
    gentlyweeping likes this.
  12. Zoso420

    Zoso420 Tele-Meister

    Age:
    35
    Posts:
    481
    Joined:
    May 31, 2021
    Location:
    Chicago
    I had to google what a beam blocker was but I already do the same thing with a couple pieces of duct tap over the speaker dust cap ala SRV.
     
    Timbresmith1 likes this.
  13. Peegoo

    Peegoo Doctor of Teleocity

    Posts:
    10,326
    Joined:
    Oct 11, 2019
    Location:
    Challenging Definitions of Sin
    Speaker power is an AC signal. Phase applies only if you have more than one speaker connected to the amp.
     
  14. Guitarteach

    Guitarteach Doctor of Teleocity

    Posts:
    11,482
    Joined:
    Aug 6, 2014
    Location:
    The unfashionable end of the Western Spiral Arm
    Outdoor gig = loss of bottom end. Sound just disappears outside. Got an extension/larger cab?
     
    Last edited: Aug 8, 2021
    wabashslim likes this.
  15. Guitarteach

    Guitarteach Doctor of Teleocity

    Posts:
    11,482
    Joined:
    Aug 6, 2014
    Location:
    The unfashionable end of the Western Spiral Arm
    nah.. some faulty overthinking. If i picked with an upstroke ratter than a downstroke it would change the initial speaker direction but it would sound the same as the ‘tone’ is alternating.
     
  16. Zoso420

    Zoso420 Tele-Meister

    Age:
    35
    Posts:
    481
    Joined:
    May 31, 2021
    Location:
    Chicago
    Yeah or if you take a step forwards or backwards now you're out of phase
     
    wabashslim likes this.
  17. Phrygian77

    Phrygian77 Friend of Leo's Gold Supporter

    Posts:
    4,142
    Joined:
    Apr 30, 2016
    Location:
    Crawfordville, FL
    Personally, I think you're probably playing with too much bass indoors if the tone change outdoors bothers you.
     
  18. clingin_on

    clingin_on Tele-Meister

    Posts:
    221
    Joined:
    Jun 18, 2021
    Location:
    Illinois
    Polarity matters in a multiple-speaker, parallel setup. In that instance, phase cancellation will occur if wired incorrectly. However the OP is apparently just using the one internal speaker.
     
    TeleTucson and CCK1 like this.
  19. wabashslim

    wabashslim Friend of Leo's

    Age:
    70
    Posts:
    2,817
    Joined:
    Nov 26, 2005
    Location:
    Sonorous Desert
    I put a pair of beam blockers in a Prosonic after some friends complained it was too beam-y in front. They worked but there were other ways to get the same result. I forgot to remove them when I auctioned the amp so somebody got a free pair. Wonder if they even know they're in there?

    They didn't affect bass but the harsh beamy highs were a little more apparent from the sides, as expected.
     
    gentlyweeping likes this.
  20. gentlyweeping

    gentlyweeping Tele-Meister

    Posts:
    140
    Joined:
    Dec 21, 2013
    Location:
    Mpls/St. Paul, MN
    Well, I think you're trying to be helpful but I wonder if you understood my original post?
    Thanks.
     
IMPORTANT: Treat everyone here with respect, no matter how difficult!
No sex, drug, political, religion or hate discussion permitted here.