Long time reader, first time poster, as they say.
I have a replace vs. fix question for an ED A3-300 (ported enclosure, 12" driver, LT.300 amp)
I've had it for several years (pre-bankruptcy, obviously), and I've already had to replace the driver and amp, which I think is ridiculous. It's the newer forward-firing design, which seems to be better, so maybe it's worth keeping. I replaced the original driver with a Dayton Audio RSS315HF-4 driver, which seemed to be an upgrade (specs at daytonaudio.com. It works great. The amp was replaced from ED with a refurbished LT.300 amp, I believe. The label on the inside says type 092000, date 100613, serial 00137. No labels on the outside other than ED's logo, so I'm not positive it's an LT.300, but the internals looked the same when I got it.
Now my replacement ED amp has blown, putting out a lovely continuous hum when it's powered on
. I hooked up a multimeter, and it's outputting a constant 85V at near zero ohms to the driver. This happened while listening to music, so the transition from working to not working was obvious.
My question: is this sub worth fixing again, whether I attempt to fix the amp or replace just it or should I throw the entire thing out and buy something new?
Here seem to be my options.
* It seems Dave will fix the amp for something like $60 based on previous posts (not a quote from Dave!), assuming the amp is fixable and worth fixing. Inspection of the amp shows nothing obvious (bulging caps, black ash, etc.). From what I read, this is not a good amp, so fixing it is a questionable proposition for me.
* A new Keiga KG5230 amp costs $225 at madisoundspeakerstore.com. This would be new crap for old crap, IMHO.
* A plate amp upgrade to something like a Dayton SPA500, which may better fit the upgraded driver. The minimal difference in price ($250 vs. $225) means this seems to be the best option, and as a bonus the cutout is the same size. Details for this amp are at daytonaudio.com
* A new, similar sub will likely run me over $500. Note I am in an apartment with a large great room (26'x14', not including a small attached kitchen and hallway) surrounded by glass on 2 sides with hardwood floors, so it is an acoustic nightmare (sub goes in the corner with all the glass). While probably considered too small, the ED put out enough bass to keep me happy. Actually, I had to set the sub's amp volume near zero just to get the stereo amp up to -5dB to use the Auto On feature reliably (which I agree with Dave is probably not a good idea, but I can't run another cord the 25' to the receiver without creating serious eye sores).
Although the sub internals have been a nightmare, the enclosure seems to be extremely well constructed--high density, 0.75" particle board with significant internal bracing--so perhaps upgrading the amp gives me the equivalent of a DIY sub. Or perhaps I'm too ignorant to know what I'm talking about.
Other details, in case they're important: Onkyo TX-SR707 stereo amp and Boston VS240 fronts. The new place's layout doesn't allow me to use the Boston center or rears, which sucks. I mostly listen to 80's music, top 40's, and EDM (don't judge) and watch hard-punching movies like Transformers and Terminator whenever I can (which isn't that often, since I'm married
Any thoughts or tips?