You are here

Log in or register to post comments
JKay
JKay's picture
Offline
Last seen: Never ago
Joined: Aug 12 2007 - 4:27pm
Need to fix speakers and buy a receiver

Hello everybody, I'm looking to build a stereo

I got some speakers from my neighbor which are each made of 2 12" subs, a mid, and a high. The only problem is that the woofers are blown pretty bad, so I need to find some subs for them. Only one sub in each box is powered and the other one I guess is powered by the air in the box. Would it be better for me to make them both powered or should I only power one? I found some car subs for cheap on ebay but they can handle 600w each. Would it be bad for me to hook those up to a reciever that makes about 200-300 watts?

Well if I get the speakers working well then I need a reciever. I will be using the stereo for music in my garage so I do not need 5.1 or anything like that just a simple stereo system. How many watts should I get for each channel?

What I've found so far was this:

Speakers - http://cgi.ebay.com/ebaymotors/4-New-12-...sspagenameZWDVW

Receiver - http://cgi.ebay.com/JVC-Stereo-Receiver-...1QQcmdZViewItem

Thanks in advance.

Elk
Elk's picture
Offline
Last seen: 2 months 3 weeks ago
Joined: Dec 26 2006 - 6:32am
Re: Need to fix speakers and buy a receiver

Only power the currently powered woofers. The speakers are designed to work with the other woofers passively driven by the powered woofers.

You can use the 600w speakers with no problem. This is the maximum power they can handle, but it is fine to use less power and is, in fact, the wise thing to do.

Ideally you want to use the same woofers as are currently in the speakers or woofers with the same specs. It's a crap shoot to just buy them on size alone. However, there is no penalty for experimenting.

You may be able to obtain enough information from the current woofers to determine what to buy as replacements.

JKay
JKay's picture
Offline
Last seen: Never ago
Joined: Aug 12 2007 - 4:27pm
Re: Need to fix speakers and buy a receiver

Okay so what should I do about a reciever. How many watts per channel should I go for?

edit: Also when I was looking for speakers on ebay most of them are 4 ohm. That means that I can't use them with a 8 ohm reciever right? But if I series wired them then I would have 8 ohm speakers. So would it really kill me to power both of them. This would make my choices easier than trying to find 4 cheap 8 ohm subs or a 4 ohm reciever.

jackfish
jackfish's picture
Offline
Last seen: 9 months 5 days ago
Joined: Dec 19 2005 - 2:42pm
Re: Need to fix speakers and buy a receiver

The woofer and passive radiator in your speakers were designed to work together in an enclosure of a specific volume, and also work with the midrange and high frequency drivers with a specifically designed crossover network. You cannot just replace the woofer with one of the same size and hope it will sound good. It could be that the low frequency drivers just need new foam surrounds and possibly dust caps. There are people who rebuild woofers and passive radiators. Otherwise they may need replacement if cones and/or voice coils are damaged. If you knew and could relate the make and model of loudspeaker it is then it may be possible to help you with a replacement. If not then the best you can hope for is to find a replacement woofer with specifications indicating it should work in that enclosure size, with that passive radiator and crossover. There are measurements that can be made on that passive radiator to determine its characteristics. It may be possible to determine what the crossover frequency is by looking at the capacitor labeling in the crossover.

How much are you looking to spend for a receiver? Have you considered an integrated amplifier, or is AM/FM part of your usual listening?

JKay
JKay's picture
Offline
Last seen: Never ago
Joined: Aug 12 2007 - 4:27pm
Re: Need to fix speakers and buy a receiver

That would be a pretty good idea if I could just get someone to fix the foam surrounds. Where would I get that done at.

And about the reciever I am going to hook it up to a computer so I need a rca input. And as long as it can power these speakers alright then I would be fine. A radio would be nice but if its cheaper without it then I would go that route.

jackfish
jackfish's picture
Offline
Last seen: 9 months 5 days ago
Joined: Dec 19 2005 - 2:42pm
Re: Need to fix speakers and buy a receiver

Make and model of loudspeaker?

Once I know that there could be several possibilities for repair.

JKay
JKay's picture
Offline
Last seen: Never ago
Joined: Aug 12 2007 - 4:27pm
Re: Need to fix speakers and buy a receiver

sony ss-u511av

jackfish
jackfish's picture
Offline
Last seen: 9 months 5 days ago
Joined: Dec 19 2005 - 2:42pm
Re: Need to fix speakers and buy a receiver

The service manual could be available for these 1991-vintage loudspeakers. https://www.ued.net/ued/addItems.do?itemCode=SNY2HF129102 That would be a place to start. Once that is in hand, a competent speaker rebuilder should have the information they need to either replace the surrounds or find suitable replacement drivers.

You can also go to this site and input the model number and your zip code and it will return an authorized service contractor that may give you an idea about repairs.
http://eservice.sony.com/webrma/web/index.do

In a receiver, if you want cheap but adequate you can get the Sherwood RX-4105 for under $100.

JKay
JKay's picture
Offline
Last seen: Never ago
Joined: Aug 12 2007 - 4:27pm
Re: Need to fix speakers and buy a receiver

Wow, 1991! Thats when I was born Anyways I was looking at repairing them myself using some place called newfoam. Other than the foam being completely wasted and a little tear in 2 of the 4 woofers they seem okay. That reciever looks like what i'm looking for. So with the newfoam costing about 55 bucks and the reciever costing about 85 bucks, I should have a system for about 140 right?

How do you guys think it will sound? I don't expect it to sound stunning but I would expect be better than the two 2.1 systems I have hooked up right now (about 70w total with massive clipping at high levels). Would it be able to fill my garage nice and loud? Yay, my first nice stereo!

Thanks for all the help guys I appreciate it!

jackfish
jackfish's picture
Offline
Last seen: 9 months 5 days ago
Joined: Dec 19 2005 - 2:42pm
Re: Need to fix speakers and buy a receiver

If you feel confident in your ability to follow instructions and don't mind the fumes of the adhesive I would definitely try the refoam yourself. Can't be any worse than no foam at all. The small tears can be repaired with silicone glue like GE Silicones Model # GE361A on the back of the cone.

If you haven't been exposed to audiophile quality equipment much your Sony speaker/Sherwood receiver system should sound OK to you, but let me warn you that equipment is still bottom end. But for the price, who cares, huh? It should be plenty loud enough to probably get you into trouble.

JKay
JKay's picture
Offline
Last seen: Never ago
Joined: Aug 12 2007 - 4:27pm
Re: Need to fix speakers and buy a receiver

Yeah I have no problem fixing stuff. Actually I love it. I guess this answeres all my questions. Thanks a lot everybody, I will enjoy my system.

  • X
    Enter your Stereophile.com username.
    Enter the password that accompanies your username.
    Loading