| Author |
Message |
    
Timebomb
Member
Username: Timebomb
Post Number: 67
Registered: 2-2005
| | Posted on Monday, March 30, 2009 - 9:23 pm: | 
|
I just bought a Magnum S9 to match my Texas Star DX500V, and it's working out nice, but I get heavy squeal (and major talkback!) through my stereo speakers if the mic gain (on D104 or radio) is up past about 3. I also tried the stock mic and it's better but still an issue. When I actually turn things down to where it's not squealing, the talkback actually sounds nice through the speakers, but my radio settings are turned way down so I'm probably losing out on audio.
This is installed in a 97 Ford Ranger with a Wilson 1000. I've grounded everything except the radio chassis, and my amp's ground lead is about a foot long connected to my seat bolt. I have not grounded frame to cab to bed to hood etc.
I've had the same issues on other radios in the truck. Does anybody else have stereo bleedover issues? Do you guys usually turn your car stereo off when keying up with an amp?
Info will be appreciated! |
Kbar
Junior Member
Username: Kbar
Post Number: 11
Registered: 2-2004
| | Posted on Monday, March 30, 2009 - 11:22 pm: |
|
Ground,ground and ground some more I had the same problem with a galaxy 88 and a TX400 and a 04 dodge truck. Ran ground from amp to battery and pretty much fixed the problem except now it turns the seat belt light on but no more bleed over. I could live with that. You might go to a solid mount antenna and cure some of it. It did for me mounted it to a aluminum tool box and grounded it to the bed and so on. Is the stereo a cheepy. If it is that might be part of the problem to. Let me reinterate ground every thing possible. First thing is move ground to battery,then bed to frame X4, cab to frame X4, hood to fenders X2, fenders to doors X2, even the tail gate to bed if you can X2. Some might say that is a little much but, If you ever have a chance to look at a compition rig they ground every thing with 1" strap. Good luck and hope this helps. |
Timebomb
Member
Username: Timebomb
Post Number: 68
Registered: 2-2005
| | Posted on Tuesday, March 31, 2009 - 10:23 am: |
|
Thanks Kbar. I think I've got some grounding to do! I've actually never used ground straps so I'm curious of the most effective way to mount them. I'm guessing most would use bolts/screws that are already present on the vehicle?
I'll also try running my amp's ground straight to the battery.
The stereo is actually not really a cheapy, it's just an old Kenwood.
Thanks for the help. |
Hotwire
Senior Member
Username: Hotwire
Post Number: 2754
Registered: 1-2005
| | Posted on Tuesday, March 31, 2009 - 1:13 pm: |
|
Timebomb, I have noticed many times that it is the kenwoods and pioneers and similar that catch all the bleedover and the cheapys none at all. I have the same setup you do and run a factory stereo with no trouble.
Many times I sit at work in the parking lot and anyone parked next to me while I talk will get bleedover, but some do not.
If you run the amp ground wire to the battery it might get worse or other problems could pop up like windshield wipers coming on, getting shocked by the mic. I don't think it is a radio problem but it is a guess without looking for myself.
Kenny
CEF491
Reading the mail around Indianapolis Indiana!
|
Timebomb
Member
Username: Timebomb
Post Number: 69
Registered: 2-2005
| | Posted on Tuesday, March 31, 2009 - 8:45 pm: |
|
Hotwire, I also sit in the parking lot of my work and key up! I've got a couple questions for ya since you have the same setup...
From what I understand, the DX500V likes alot of swing...so wouldn't it make sense to run the Top Gun with the amp? I've tried it both ways and seems okay, but I've read most people leave the Modulator off. Wouldn't this defeat the purpose of taking advantage of the swing? My S9 doesn't have nearly the amount of swing with the Modulator off. I've got the amp set at about a 7 watt dead key.
Also, do you prefer a stock or power mic with this setup?
I actually heard some Hawaii today in California. Really caught me off guard!
Again, thanks for the info. |
Golden_screw_driver
Intermediate Member
Username: Golden_screw_driver
Post Number: 101
Registered: 2-2008
| | Posted on Wednesday, April 01, 2009 - 12:51 pm: |
|
Timebomb, I have been using my s-9 for about 2 years now started with 667v and then dx1600v and a fatboy 2x8 and now a fatboy 1x2x12 all from my 02 S10. As everyone else has said ground everything.(dx1600v and 1x2x12 are both operatinal is same truck)as for the topgun i have only noticed with an amp inline around 40watt's more swing and aint nobody going to notice 40watt's once your at 400 save the transistors in your box, Use the varibale on the radio and let it swing(if you dont like how it is looking on your mags RF meter hook it to external and you will see PLEANTY of swing. As for the mike's i am a firm beliver in noise cancling or stock, The mags sound great with the stock but have got more clear audio out of the astatic 656. AND PS NO BLEEDOVER STOCK STEREO WITH AMP
421 GOLDEN SCREW DRIVER
CEF#0995
NORTH-EAST
CEF NET CONTROLLER
Channel 13 / 27.115 AM/LSB
|
Barakuda318
Intermediate Member
Username: Barakuda318
Post Number: 192
Registered: 2-2002
| | Posted on Wednesday, April 01, 2009 - 3:40 pm: |
|
Here is something for you to check, last time this happened to me, I dug into the dash and found that the ground had come loose from the stereo, now that may seem odd as the stereo was still operational, however I found that it was getting ground from the antenna, but of course not enough.,so I hooked the ground back up, and of course while I was at it, I put in a ground loop isolator, and wala, no more bleedover/feedback, so thats something you might check into as well, (by the way) the stereo was a pioneer, lol hope this helps.
73's Barakuda318
|
Kbar
Junior Member
Username: Kbar
Post Number: 13
Registered: 2-2004
| | Posted on Wednesday, April 01, 2009 - 5:29 pm: |
|
Timebomb use as many of the existy bolts,screws as you can. Use a wire brush or some sand paper to clean the metal in a very small spot to avoid any rusting later on. I agree with hotwire on the radio did not know it was an older stereo. Sorry about that. I for got one thing in the first post. I add a extra ground form battery to the frame to avoid that shocking sinsation to the lips from the mike. This is what worked for me may not work every time though. Just kinda completed the circut. Good luck and sorry about the miss info. Hope this helps. |
Golden_screw_driver
Intermediate Member
Username: Golden_screw_driver
Post Number: 102
Registered: 2-2008
| | Posted on Friday, April 03, 2009 - 11:22 am: |
|
Timebomb, sorry i was so breif with last post was at work. what i did to do the grounding on this truck and my wife's was ground down the metal on the floor under truck both side's front and back and i welded a botl in place, Same on the frame side. Did the same with fenders and the bed. And one for the alt. My truck i used flat strap groung, My wife's truck uses 18" black batt cable with ring terminals on it right from autozone. iether way should work for you. By the way if you do it welding studs way be shure to DISCONNECT batt from truck. As for rust once you connect all wire's to there places you can now prime and paint area. I use ruberized undercoating in a can again from the ZONE. I LIVE I A HIGH ROAD SALT AREA> absolotly no rusting going on as of yet. and i check often. hope this also helps,
421 GOLDEN SCREW DRIVER
CEF#0995
NORTH-EAST
CEF NET CONTROLLER
Channel 13 / 27.115 AM/LSB
|
Timebomb
Member
Username: Timebomb
Post Number: 70
Registered: 2-2005
| | Posted on Friday, April 03, 2009 - 10:11 pm: |
|
Should I also ground the chassis of the radio? If so, will braided 10 gauge work?
I'm liking the idea of using the battery cable with ring terminals in case I have trouble finding ground straps...
I may also pull the stereo, and add a ground loop isolator.
Thanks again for the tips. |
Barakuda318
Intermediate Member
Username: Barakuda318
Post Number: 195
Registered: 2-2002
| | Posted on Sunday, April 05, 2009 - 3:35 am: |
|
If you got the ground strap, i'd ground it, a good rule of thumb is you can never have too much ground, making sure the radio has great ground just helps the radio get all the power it needs to operate to its fullest potential, sounds like your well on your way to getting rid of the problem, good luck...
73's Barakuda318
|
