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DQ 1W--seized woofer

 

I couldn't resist buying another DQ10 setup, this time with a DQ 1W sub and DQ LP1. Of course I didn't test any of it before purchase and not too surprisingly the DQ 1W woofer is seized. I've read about this somewhere previously--with dust cap off you can clearly see that the center pole piece is jammed up against one side. Not to mention that it looks like somebody basically tried to start a fire with this thing. So not worth trying to repair.
Just wondering then--does anyone have a Seas 33F woofer in ok shape you would part with at a reasonable cost?
Or--does anyone have experience retrofitting with another woofer? It is a 13" which is a horrible size to work with though there are appear to be some subs that are at least near 12.75" OD. Could probably make it work.
Not too worried about this project but thought I would ask.
 

The 33 F-WK shows up occasionally on eBay if you don't mind waiting a few months or a year for one. There are other 33 F types of woofer that will perform to varyingly different degrees in that box, so you'll have to check parameters to see if a 33F-xxx that shows up will work for you.

?

However, the nice thing about the DQ-1W is that it's a passive sub with external crossover intended to be used with a separate amp. So, unless you want to keep it original, you're free to upgrade the driver without the usual concerns that come with substituting drivers. Good as the 33 F-WK was for its day, subwoofer design has come a long way in the past half century, so there's a lot of room for improvement. I believe some of the SB Acoustics 12" offerings should work without modifying the cabinet since they tend to oversize their frames. A potential option:??
 

John--I do have my ebay notifications set to let me know if anything ever shows up. I'm in no hurry, just curious to see what the sub might be like as I didn't have one previously. And I have the LP1 that seems in very good condition though I have not hooked it up to anything yet. Thanks for the link to the SB woofer, that does seem to be pretty extended in size so might be worth a try.?
 

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I had Orange Co Speakers replace the VC in mine. They are no longer, but the tech that did the work opened a new shop. ?Speaker Repair Pros in Garden Grove, CA. IIRC it was $100 repair.?


On May 2, 2021, at 11:26 PM, John vanp Son <jpvanson@...> wrote:

?

The 33 F-WK shows up occasionally on eBay if you don't mind waiting a few months or a year for one. There are other 33 F types of woofer that will perform to varyingly different degrees in that box, so you'll have to check parameters to see if a 33F-xxx that shows up will work for you.

?

However, the nice thing about the DQ-1W is that it's a passive sub with external crossover intended to be used with a separate amp. So, unless you want to keep it original, you're free to upgrade the driver without the usual concerns that come with substituting drivers. Good as the 33 F-WK was for its day, subwoofer design has come a long way in the past half century, so there's a lot of room for improvement. I believe some of the SB Acoustics 12" offerings should work without modifying the cabinet since they tend to oversize their frames. A potential option:??
 

Thanks for the suggestion. I'll check that out.
 

Good move as you now have the ticket right in your hands with the LP1. Figure out your amps input impedance. Run the math to determine the 6db cap size. Then select and order up a few different types. Pickup another sub and a suitable bipolar high dampening factor bass amp and your rolling. Caps all produce different sound profiles and higher cost does not necessarily produce better results. Best to let your own ears decide and by all means experiment with many different types. Teflon, polystyrene, polycarbonate, polypropylene, etc. I've been stuck on Russian Teflons for a few years and they basically commit no sins and are cheap.

That LP1 with stereo subs is a real game changer and really allows the 10's to bloom.

If possible resolder the RCA jack connections to the board prior to use. The jacks are not the most robust but usually work fine once resoldered.

DD


On May 4, 2021 5:49 PM, <shsmith@...> wrote:
Thanks for the suggestion. I'll check that out.

 

I really like my stereo DQ-10/DQ-1W/LP1 setup. I actually have two sets of DQ-1W subs and one of the drivers is open; the voice coil finally gave it up. I was going to get it reconed but I'm having so much trouble getting it out of the cab that I shelved the project for now. I'll probably end up destroying the woofer frame to get it out, and I'm really thinking about just replacing the driver with a new one.
Does anyone have more information about the SB Acoustics model? My fear is that it might be one of the boomers that was made for car stereo rap rigs...I want a great sounding woofer that is high fidelity, not high booming!
I drive my speakers with a pair of rebuilt White Oak Phase Linear 700b amps, so I need an unpowered woofer. Also wondering if anyone knows of complete unpowered subs, with the cab and ready to go.
 

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SEAS has a really great subwoofer that can even be used as a woofer. Madisound carries it.?
I used them in my LX521.4 Linkwitz designed speakers and it’s great.

Bill Meyerhoff


On May 5, 2021, at 9:33 AM, Dave Smith <soldershack@...> wrote:

I really like my stereo DQ-10/DQ-1W/LP1 setup. I actually have two sets of DQ-1W subs and one of the drivers is open; the voice coil finally gave it up. I was going to get it reconed but I'm having so much trouble getting it out of the cab that I shelved the project for now. I'll probably end up destroying the woofer frame to get it out, and I'm really thinking about just replacing the driver with a new one.
Does anyone have more information about the SB Acoustics model? My fear is that it might be one of the boomers that was made for car stereo rap rigs...I want a great sounding woofer that is high fidelity, not high booming!
I drive my speakers with a pair of rebuilt White Oak Phase Linear 700b amps, so I need an unpowered woofer. Also wondering if anyone knows of complete unpowered subs, with the cab and ready to go.

 

I like anything seas makes so I might give that a look and doesn't hurt that it was co-designed with Linkwitz. I have to make a sub for someone this summer anyway so might pick one up. If I try it in the DQ 1W I would need to cut an adapter ring of some kind to shrink the opening. But I can probably manage it.?
 

I'll probably mostly use my accompanying Adcom gfa 555 for bass duty. It is listed as 22kohm input impedance. The chart in the LP-1 manual suggests adding a .056 in parallel so I'll try that. I am no cap roller yet though have made my way through recapping a variety of things and built some things. I'm not familiar with Russian caps, is there a good place to start with that? I'm mostly familiar with elna silica and stuff like nichicon fine gold--stuff that I can get through mouser.
 

Sounds like your not lacking in wattage that's for sure. The 10's are generally pretty hungry. Once bi-amped they are a little more reasonable. As for subs I'd stick with vintage alnico mags in sealed cabs if your really seeking bass definition. And generally they will only require half or less of the power the 10's like. Depending on room size the 700 would be capable of driving at least a pair of decent size subs if not two pairs.

I'm not really a fan of the Seas 13".?And prefer a pair of 4x10"s which are about as fast on rise and decay time as it gets. I really can't help much on current production woofers. As I've yet to hear any since the early 90's that have caught my ear.

DD


On May 5, 2021 8:33 AM, "Dave Smith" <soldershack@...> wrote:
I really like my stereo DQ-10/DQ-1W/LP1 setup. I actually have two sets of DQ-1W subs and one of the drivers is open; the voice coil finally gave it up. I was going to get it reconed but I'm having so much trouble getting it out of the cab that I shelved the project for now. I'll probably end up destroying the woofer frame to get it out, and I'm really thinking about just replacing the driver with a new one.
Does anyone have more information about the SB Acoustics model? My fear is that it might be one of the boomers that was made for car stereo rap rigs...I want a great sounding woofer that is high fidelity, not high booming!
I drive my speakers with a pair of rebuilt White Oak Phase Linear 700b amps, so I need an unpowered woofer. Also wondering if anyone knows of complete unpowered subs, with the cab and ready to go.

 

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On another pair of speakers I put an extra layer of MDF glued and screws and then used a router.


Bill

On May 5, 2021, at 7:38 PM, shsmith@... wrote:

I like anything seas makes so I might give that a look and doesn't hurt that it was co-designed with Linkwitz. I have to make a sub for someone this summer anyway so might pick one up. If I try it in the DQ 1W I would need to cut an adapter ring of some kind to shrink the opening. But I can probably manage it.?

 

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This is a Dipole woofer in an open cabinet. Polarity is reversed in the rear pointing woofer. I would like to add one in my DQ10’s, DQ20i’s, DQ20’s.

Bill


On May 5, 2021, at 10:48 PM, Bill Meyerhoff <bmeyerhoff@...> wrote:

On another pair of speakers I put an extra layer of MDF glued and screws and then used a router.


Bill

On May 5, 2021, at 7:38 PM, shsmith@... wrote:

I like anything seas makes so I might give that a look and doesn't hurt that it was co-designed with Linkwitz. I have to make a sub for someone this summer anyway so might pick one up. If I try it in the DQ 1W I would need to cut an adapter ring of some kind to shrink the opening. But I can probably manage it.?


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