High Efficiency Speaker Asylum

RE: Cerwin Vega V 36D In The House

47.197.98.131

ka7niq

A

In Reply to: RE: Cerwin Vega V 36D In The House posted by Bill Fitzmaurice on August 20, 2017 at 10:31:46

Thanks Bill!
The box is tuned to 45 hz, according to the CV poop sheet
I will listen to see if the tweeter is being switched out of circuit with the switch, but they are very noticeably brighter, with the switch in the guitar.keyboard position.

I pulled one crossover, and all caps except one is Mylar. There is a 4 mfd 100 volt non polar electrolytic in there. I just ordered a couple 5% 3.9 mfd 200 volt Mylar caps from Madisound to replace the only electrolytic in the crossover.

Follow Ups:

RE: Cerwin Vega V 36D In The House - Bill Fitzmaurice 12:23:07 08/20/17 (3)
45Hz tuning doesn't equate to 45Hz response, especially with a very low Qes woofer, which it probably has. Low Qes is what gives a woofer high sensitivity and extended high frequency range, but it also limits the low frequency extension.
- It Is Different From Most Woofers I Know - ka7niq 12:30:21 08/20/17 (2)
  Most woofers, when you give them a light push in the center of the cone, will move quite a ways.
  These barely move. Is that normal for this type of woofer/surround ?
  - RE: It Is Different From Most Woofers I Know - Bill Fitzmaurice 15:18:42 08/20/17 (1)
    Assuming it's a cloth surround, typical with pro-sound drivers, it will be much stiffer than the foam or rubber surrounds used in most consumer sound drivers.
    - RE: It Is Different From Most Woofers I Know - ka7niq 16:16:31 08/20/17 (0)
      Yes, it appears to be cloth, like an accordian.
      When I flipped the speakers on their face to pull a crossover, I noticed the toggle switch in the back has 2 positions Vocal and Playback, not what I originally said.
      I had them in Playback, so I switched into Vocals.
      MUCH better!
      Now, all that woofy muffled sound is gone on TV and Movies.
      I just watched War Games, and it sounded great.
      
      I have them almost in the corners, 2 or 3 feet out, and firing right at me, across the room.
      My room is approx 20 by 24, and they illuminate it very well.
      
      I traded a guy a real nice receiver for a Legacy Dual Impact Subwoofer some time ago. So, just for shits and giggles, I engaged the subwoofer, thinking it could not keep up with these speakers. Guess what, it keeps up pretty darn good.
      
      I am running them flat, and letting the subwoofer pick up the bottom.

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