Home |
Search |
Today's Posts |
#1
|
|||
|
|||
Bad crossover in HED speaker?
Hello,
I'm having a problem with a pair of speakers I own whereby the mid-range cone appears to cut out. Before I attempt to explain, let me point out that I don't know a whole lot about what goes into a speaker box, so please go easy if I omit important information (and please correct my terminology). My speakers are prominently labeled HED, with the back panel expanding that to High Energy Design and also containing the name Carwin-Vega, apparently the manufacturer. I couldn't find a model number anywhere, but I might not know where to look. The connection panel on the back contains two pots, one for mid-freq and the other for high-freq, with a range marked 1-5. It also has a reset button. The box contains a 12 inch woofer, 5 inch midrange, and 2.5inch tweeter. I'm told these were rather expensive in their day (1970's?), and indeed I'm pleased with their sound. I would be interested if anyone could tell me more about these speakers, though that's not my main question. It might be relevant to mention that the setup is powered by a Yamaha RX-V495 receiver, and that the problem manifests itself apparently regardless of input source (CD, FM, decoded MP3) or type (analog or digital). The problem is manifested by an intermittent loss of tone quality in the mid-range (to my untrained ear). I have isolated this apparent cutout of the midrange cone to one speaker box; the other is unaffected. It doesn't appear to be affected by volume, and the connections are sound. I tried hitting the reset button on the speaker, but that hasn't helped. I also adjusted the pots, again to no effect. I suspect that something may be wrong with the crossover circuitry (presuming there is a crossover), but I don't know how to proceed with the diagnosis. If anyone could provide me with some background on these speakers and what could potentially cause this problem, I would be appreciative. Specifically, what are the functions of the pots on the back of the speakers? What does the reset button do? Could a bad cap be causing this problem, and should the caps be replaced on these 30 year old speakers? Thank you for relieving my ignorance. Corey |
#2
|
|||
|
|||
Bad crossover in HED speaker?
Corey Keasling wrote:
Hello, I'm having a problem with a pair of speakers I own whereby the mid-range cone appears to cut out. Before I attempt to explain, let me point out that I don't know a whole lot about what goes into a speaker box, so please go easy if I omit important information (and please correct my terminology). details snipped Thank you for relieving my ignorance. I retract my gratitude. Instead, I will thank you for nothing. Corey. |
#3
|
|||
|
|||
Bad crossover in HED speaker?
"Corey Keasling" wrote in message ... Corey Keasling wrote: Hello, I'm having a problem with a pair of speakers I own whereby the mid-range cone appears to cut out. Before I attempt to explain, let me point out that I don't know a whole lot about what goes into a speaker box, so please go easy if I omit important information (and please correct my terminology). details snipped Thank you for relieving my ignorance. I retract my gratitude. Instead, I will thank you for nothing. Corey. Perhaps you got no response because no one on this forum happens to have any useful knowledge of the speakers you're asking about. Additionally, intermittent problems in electronics are extremely difficult to diagnose, especially in the third person. |
#4
|
|||
|
|||
Bad crossover in HED speaker?
Corey Keasling wrote in message ...
Corey Keasling wrote: Hello, I'm having a problem with a pair of speakers I own whereby the mid-range cone appears to cut out. Before I attempt to explain, let me point out that I don't know a whole lot about what goes into a speaker box, so please go easy if I omit important information (and please correct my terminology). details snipped Thank you for relieving my ignorance. I retract my gratitude. Instead, I will thank you for nothing. What, you think, in a free, public forum, you are somehow ENTITLED to a response? There are a number of technically competent people who contribute to this forum without either expecting or receiving compensation of any form in return. They (we) do it as a favor to those, and do it when time and pressure from clients and jobs allow. It's often very gratifying work, and often quite a hard job when it comes to explaining some esoteric physical principle now and then. Despite that, a lot of us do it because we enjoy helping people learn. Then, someone comes along who DEMANDS that we answer their question and when they don't get the response they want WHEN they want it, they respond with "I retract my gratitude. Instead, I will thank you for nothing." Well, you may thank us for nothing, because after a petulant, demanding comment like that, nothing is likely what you will get. You're welcome, by the way. |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Bose 901 Review | General | |||
rec.audio.car FAQ (Part 4/5) | Car Audio | |||
rec.audio.car FAQ (Part 2/5) | Car Audio | |||
My equipment review of the Bose 901 | Audio Opinions | |||
Comments about Blind Testing | High End Audio |