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Ampeg SVT 410 HE

Discussion in 'Amps and Cabs [BG]' started by lacepage, Nov 29, 2012.

  1. lacepage


    Sep 27, 2009
    I have an older 410HE and the light bulb fuse is blown and I cant find ANYTHING that tells me the right replacement #!!!! Not even Ampeg's website, HELP!!!
  2. RickenBoogie


    Jul 22, 2007
    Dallas, TX
    They're usually auto light bulbs, as in, from an automobile tail light or something. Pull it out, and go to the auto parts store. Then, be careful pushing the tweet so hard. Maybe back off a bit.
  3. Signs

    Signs Supporting Member

    Jan 11, 2011
    Muskegon, MI
    Found this on an older thread...Hope it helps...
  4. lacepage


    Sep 27, 2009
    Yea thnks guys, Ino all that, but I cant find the part # of the bulb itself. I was told it was an 1156 and I went to the local best(not chain) electronic parts store and asked for an 1156 and they handed me a blade fuse instead of a bulb. 1156 is sposed to cross over to a BA15S and I found it on Amazon for $30. No thnks.
  5. musicman666


    Sep 11, 2011
    Just out of curiosity where is the bulb located? I have an old 410he with 2 missing speakers and 1 torn speaker.....I see no place for a bulb in the tweet...It is an early 90's SLM 410he. If it had a bulb I would send it to ya.
  6. musicman666


    Sep 11, 2011
    Ok just completely removed my tweet! No bulb in mine. You must have a newer model.
  7. lacepage


    Sep 27, 2009
    Its on the X-over circuit board on the back panel and I just looked @ it and theres a note that says 1683 lamp. The 1165 works so I picked up 2 from AutoZone for $4.99. I remember reading somewhere the specs are lower or its a lower voltage or something so it'll pop sooner than the 1683, butt I got my sparkle back. Sweet!!
  8. Kmonk


    Oct 18, 2012
    South Shore, Massachusetts
    Endorsing Artist: Fender, Spector, Ampeg, Curt Mangan Strings, Nordstrand Pickups, Korg Keyboards
    GK has a similar bulb like fuse. When I was using GK I had to replace one and was told that while they look like an automotive bulb, they actually have a different filament in them. I would email Ampeg's customer service department.
  9. Signs

    Signs Supporting Member

    Jan 11, 2011
    Muskegon, MI
    . 1156 is sposed to cross over to a BA15S and I found it on Amazon for $30. No thnks.[/QUOTE]

    Try this:It looks like the little light bulbs I get from NAPA for our deer hunting camper interior lights. About $2.50 each...

    Sylvania 36521 (1156)

    27.3 watt (2.1 AMP) 13 volt S8 Single Contact Bayonet Base #1156 Miniature Incandescent Sylvania Light Bulb (Sylvania 1156 36521)
  10. Jerrold Tiers

    Jerrold Tiers

    Nov 14, 2003
    St Louis
    Not so. At least not for Ampeg. They are straight-up stock bulbs.

    usually the number is on the base, often stamped in, but may be just stamped in ink.

    The 1156 is a 12V 2 amp bulb, which I don't recall being used, although I don't recall all the cabinets and crossovers. Many cabs used a 28V 1A truck light bulb with a somewhat funnel-shaped glass bulb.

    The 28V 1A bulbs were used because the 1A was near the power rating of the tweeter, and the 28V would absorb a good deal of excess voltage.

    Bulbs are used to begin with because they have a low resistance when cold, so unless a lot of power is put through them, they are pretty much out of the picture. With excess input (and current flow), they heat up, their resistance goes up, which limits power flow into the tweeter.

    Later cabs use several 12V tubular "dome light" bulbs in series, with the only difference being that they have an extra wire welded on each end for soldering into the PCB.
  11. The Regulator

    The Regulator

    Aug 10, 2005
    At Sweetwater it says that the SVT-410HLF is 76 lbs and the SVT-410HE is 85 lbs. On the Ampeg website it says the SVT-410HLF is 85 lbs and the SVT-410HE is 91 lbs.
    I find it hard to believe that the HLF is lighter than the HE. Does anyone know the actual weight of the newer SVT-410HE's which are supposed to be lighter?
    Last edited: Jan 4, 2016
  12. The Regulator

    The Regulator

    Aug 10, 2005
  13. rufus.K


    Oct 18, 2015
    I remember going thru this when my bulb blew. I did use and 1156 and it wasn't right, although it fit. I'll have to pull the plate on mine to find out.