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Ashdown combo (perfect ten) speaker change..

Discussion in 'Amps and Cabs [BG]' started by D.Don, Jun 21, 2008.

  1. Jun 21, 2008 #1
    D.Don

    D.Don

    Mar 6, 2008
    Swede lost in the 5th republic
    After using the Perfect Ten 30w combo now for some months, I am still annoyed by the hiss, even on low volumes, so today I detached the grill only to find there's no tweeter... Then I went to a local bass store, tried the Five Fifteen, and it was DEAD quiet, NO hiss, what so ever, not even on loud levels ...

    My suspicion here now is the 10" speaker "Ashdown Blue Line 8 ohm 80w" says the sticker, but I got a feeling it's some china crap they dug up from god knows where.

    So, I've been looking at Jensen stuff, and found it's not that expensive, since I only need one...

    Does this make sense? And if it does, which of the Jensen series should I go with then?

    http://www.jensenvintage.com/tonechart_3.htm

    Mod series looks appealing, and the 70w 8 ohm MOD speaker would probably do a good job in theory replacing the "ashdown" speaker ...

    Anyone?


    Cheers!

    D.Don
     
  2. Jun 21, 2008 #2
    billfitzmaurice

    billfitzmaurice Commercial User

    Sep 15, 2004
    New Hampshire
    Owner, Bill Fitzmaurice Loudspeaker Design
    Speakers don't create hiss, they only reproduce whatever signal is sent to them. When hiss is present the amp and/or other electronics is the source.
     
  3. Jun 21, 2008 #3
    D.Don

    D.Don

    Mar 6, 2008
    Swede lost in the 5th republic
    AH ok,

    Why is my amp hissing, while the five fifteen was complely quiet?

    D.Don
     
  4. Jun 21, 2008 #4
    throbgod13

    throbgod13

    Mar 26, 2005
    Texas

    grounding issues??.. EMF/RFI issues?? gain turned up too high??

    there's a bunch of potential reasons why your amp is hissing..
     
  5. Jun 21, 2008 #5
    D.Don

    D.Don

    Mar 6, 2008
    Swede lost in the 5th republic
    Both amps, no cable connected

    My perfect ten: gain, 6 out of 10, volume, 4 out of 10 (or more or less whatever)
    The five fifteen in the store: gain 10 out of 10, volume 10 out of 10 (or whatever)

    EMF/RFI ?

    Does that create high freq noise?

    Cheers!

    D.Don
     
  6. Jun 21, 2008 #6
    billfitzmaurice

    billfitzmaurice Commercial User

    Sep 15, 2004
    New Hampshire
    Owner, Bill Fitzmaurice Loudspeaker Design
    Usually only when you have a cord and bass plugged in that can be affected by it. If you get hiss with nothing plugged in your amp is either defective or poorly designed/constructed. The only way to know which is to compare it against another identical model.
     
  7. Jun 21, 2008 #7
    D.Don

    D.Don

    Mar 6, 2008
    Swede lost in the 5th republic
    Yeah, unfortunately they had no perfect ten in stock in that store, but I will most likely try to find anther one and see if its quiet too..

    I suspect something is weird with this one, coz when I shut it down it makes a sound like "Keeeetjoooo-boom" not super loud but still very hearable ...

    Maybe the shipping from UK to France did something with it?

    D.Don
     
  8. Jun 22, 2008 #8
    D.Don

    D.Don

    Mar 6, 2008
    Swede lost in the 5th republic
    Part of the problem might have to do with the power in our building here, as there's always a low freq. hum present no matter what jack I use, and on _any_ appliance connected, even the alarm clock has it if I stick it to my ear and listen.

    But would this affect and increase high freq. noise as well?


    D.Don
     
  9. Jun 22, 2008 #9
    billfitzmaurice

    billfitzmaurice Commercial User

    Sep 15, 2004
    New Hampshire
    Owner, Bill Fitzmaurice Loudspeaker Design
    Doubtful. That low frequency hum is 50Hz, the frequency of your AC. Hiss is usually caused by low grade components, especially if the pre amp circuits use ICs, which most SS amps do.
     
  10. Jun 22, 2008 #10
    Rick Auricchio

    Rick Auricchio Registered Bass Offender Supporting Member

    Nov 27, 2007
    Cambria, CA (Central Coast)
    That sure sounds like a Dutch word! :D
     
  11. Jun 22, 2008 #11
    D.Don

    D.Don

    Mar 6, 2008
    Swede lost in the 5th republic
    I opened it today, it's not a big amp thing in it, there's a small op (probably the pre-amp/gain) and then there's two bigger things that looks like buckets, probably some kind of capacitors or something, but circut board really doesnt carry a lot more than that ..

    I am more and more thinking of getting rid of this thing and getting something else...

    D.Don