italie |
MAME owes italie many thank yous, hah
|
|
|
Reged: 09/20/03
|
Posts: 15246
|
Loc: BoomTown
|
|
Send PM
|
|
I've worked on those amps quite a bit, remind me later tonight to look at this again. Sounds familiar. <nt>
02/07/14 02:16 PM
|
|
|
> I'm a novice when it comes to speaker systems, so hopefully someone can help me out. > Here is what I'm working with (spec information is based on what I've found on the > internet): > > Peavey PV 1500 Stereo Power Amp > circa 2005 > 750W/ch @ 2 ohms > 500W/ch @ 4 ohms > 300W/ch @ 8 ohms > Input Gain Knobs set to max (+32 dB) for both inputs > DDT enabled for both inputs > High-Pass/Low-Cut 40 Hz filter enabled for both inputs > Channel A (Left) Speakon connector -> 1 speaker > Channel B (Right) Speakon connector -> 1 speaker > > Peavey Model-115 International Series III Oak Speakers > circa 1989 > 3-way: 1505-8 Black Widow woofer, 22XT driver w/ CH-3R horn, HT-94 tweeter > 8 ohms > 200W continuous / 400W program / 800W peak > Crossover 1500 Hz & 8000 Hz > > The right speaker (B) sounds fine, but the left speaker (A) is barely playing any > sound. The DDT light for channel A flashes red from time to time. The fan on the > power amp seems to run faster at random times, even if there isn't a lot of loud > sound being played. > > I'm trying to figure out if the speakers are considered connected in parallel, which > from what I've read would mean that the amp is running 4 ohms instead of 8 ohms. If > that's true, it would mean that the 400W speakers are getting 500W, which could be > the reason that the left one isn't working properly now. > > Here is my proposed solution: hook the good speaker to the channel A output and have > the channel B output empty, while also turning down the channel B gain knob to the > min setting. The amp would then send 300W to the 400W speaker and the fan shouldn't > be running in fast mode since it's not under stress. > > Does that seem right and is there any way I could get the bad speaker working again? > > Thanks.
|
|