Dahlquist DQ10


New user, first post. I don't consider myself an audiophile...haha.  I have the opportunity to purchase a set of DQ 10's @ $375 for the pair.  Been on the 'Google' researching but figured I'd just get some new info here.  Is this a good deal?  They have been re-foamed but no tweaking of the electronics.  Seller says they have not been used much.  Will my Yamaha RX V677  7.1 SS receiver have sufficient power for these if used in 2 channel mode?  I find conflicting opinions about this.  I remember these when they first came out in the 70's and the reviews were fantastic.  Just wonder if they still compare to today's speakers.  Thanks!
sejodiren
my main concern would be the crossover components may need replacing which could double the price pretty quickly (I imagine)

my two cents...
I am going to listen to them tomorrow.  Is there a way I can tell?  I'm not very knowledgeable about the tech type stuff.
In the majority of cases, crossover failures involve the capacitors and generally electrolytic caps. I used to mod Dahlquist’s DQ-10s (mirror image/swap Piezos for ribbons/etc) in my shoppe(talking 1980’s here). I never have seen a stock DQ-10, with anything other than Metalized Mylar caps. Look at the crossovers and if the caps have a shiny yellow wrap, they are probably stock, and still good.
I would say buy them. If they are in good working condition, even without any exotic upgrades they will be enjoyable. They are by no means reference level, but they are fun, and the price is right.  
Thanks!  I find it interesting that the stock caps would still be good but newer ones put in during a mod may be bad.  Do you think my receiver has the power to fully get the best sound?  It has pre-outs and the option of getting a power amp might be interesting.  Have always wanted one.

There are some classic speaker designs that are a must own sometime along your audio journey. The DQ-10 is certainly one of them.

Sometimes older parts sound much better than newer simply "because" of their age and how they were maintained over the years.

good luck

Michael Green

www.michaelgreenaudio.net

No experience with your receiver but according to the specs with 90wpc it should have adequate power depending on your room size and listening volume. Sound quality could be improved if you add a better amp later on. Let us now how you make out.
I have a really nice pair of DQ-10’s that I spent 4 months restoring. They came out absolutely gorgeous and sound great.

I did replace a few of the caps mainly because they, more or less, crumbled when I touched them.

Your receiver, IMHO, is barely the minimum required to drive these. They are a little inefficient and need more power. I agree that a larger amp would be beneficial.

There is a lot of help online if you want to restore/repair or just get more info on them.

Again, IMHO, they still hold their own against a lot of the competition. Marvelous speakers when driven well and correctly setup.

Good luck and let us know what you do...
I owned the DQ-10's back in the day.  I would be concerned with the amount of power you have.  I had a Macintosh amp that put out 200 to 250 watts per side and I could have used more power / current.
I haven’t heard the speaker since its heyday in the mid-’70s. I remember one favorite amp was the Ampzilla- it had oodles of power and didn’t sound as nasty as a lot of early solid state. The speaker seemed to benefit from a large solid state amp, but I never owned a the DQ-10. It was a pretty remarkable speaker in the day- have no idea how it would hold up today. Cool that you restored a pair, @mofimadness.
buy em
ditch the piezo
certainly worthy of much better power....
we ran them with Haflers ......
Many moons ago I owned the DQ10. I used a 200 watt Forte amp and the combination was outstanding. I think the DQ10 would compete with any speaker made today. BTW, it is listed number 6 of the most significant speakers of all time!
www.theabsolutesound.com/articles/the-12-most-significant-loudspeakers-of-all-time/

I owned the DQ 20 for a while and really enjoyed it. I wish I had kept it longer and put some money into updating it. It certainly had its deficits, but it had a special way with depth that I really liked, and sometimes it could really present instruments and voices in a 3D way. 
There is a repair/upgrade available:
http://www.regnar.com/
They also sell refurbed speakers, too. (none available at the moment).

If they sound okay, I would get them. I remember them when the first came out and still remember how good they sounded.
bob
Well, made the purchase.  They have been owned by an engineer since new.  Not a mark or ding on them.  Wood grain with the sorta beige covers.  He lives in the retirement home down the street and was selling them in their in house thrift store.  They had them hooked up to a small Sony SS receiver....maybe 30 wpc at most.  I was pretty impressed with the sound even at the low volume.  rodmann99999-they have the shiny yellow caps.  Gonna pick them up friday morning....now I just need to figure out placement in my living room....haha
Good move, I hope you enjoy them.
Bob
A bargain at that price! Still a superb sounding speaker! And not embarrassed by today's big-buck speakers! I too own a pair with upgraded woofers and x-overs. Plus custom stands and new black grill cloth. The price: $375 - and the seller was only 5 miles from me! So I rushed over and snagged them before anybody else!
Enjoy them! 
I had a pair for several years and really enjoyed them...At that price I wouldn't hesitate to buy them.
Sure they'll play, but they really want more power to satisfy their hunger

Enjoy your DQ-10's, welcome to the family! I think you'll find lots of cool folks who have owned, or still do, this classic. It's also cool that you get to start off stock.


mg

They eat POWER !!!
You will be able to hear music with your 110 w/ch receiver ...la la lala....- but
with POWER you'll feel their wrath and cringe in fear and awe.  Feed it a good 250 watts into 8 ohms and be amazed!!!!
Haha.....love it 'waterzlife'.  In the late 70's, I had a friend who owned a Phase Linear 400.....can't recall the speakers. Thorens TT.  I still remember how it sounded.  Bachman Turner Overdrive f'n rocked the dump!  Fear and awe is a great analogy though! Thanks for all the feedback everyone!  Was looking at power amps on the ole interwebs today....
Here’s hoping they serve you and your music well! I do recall making a couple DQ-10 owners/customers very happy, selling them Hafler DH-500s, to go with. A very dependable and stable amp, still easy to find on the used market, with lots of available upgrades. In most, replacing the electrolytics would be a necessity, after all these years. One caveat: fan noise, especially if you push it hard.  ie: https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2322090.m570.l1313.TR1.TRC0.A0.H0.Xhafler+500...
Thanks rodman99999!  I'm kind of leery about buying used so I was just looking at new.  Yikes....$$$$  Probably wait till tax time next year.  I'm old and retired...haha. Gonna see how they sound first with my current  SS set-up.  I gotta think they'll blow away the Yamaha towers I bought in '96, even without some 'mega-wattage'...and to me those sound pretty damn good.  I also have a Klipsh 8" sub so I'm sure that'll compensate for the lack of bass response that I read these supposedly lack.  We shall see!
Here are the amps I’ve used with my DQ-10s over the years with great success:


Odyssey Stratos series, (the Dual-Mono was the best)

Anthem Amp 2SE+, (hybrid tube/SS)

Aragon 4004 MKII

Belles 150A Reference

Belles 350A Reference


Any of these would be much better then your Yammy! IMHO, the Belles 350A Reference was the best overall. What a FANTASTIC amplifier, but the others were no slouches...
I doubt that you will need a sub with them. Those Advent woofers in the DQ 10s have a nice tight bass!
Thanks for the tips.  I got the Yammy free as a safety award for 30 years of accident free driving.  And the Klipsch sub was also an award.  It was part of a SS 5.1 package.  The satellites sound like crap but the sub cranks.  I guess I could consider myself an educated 'newb' now!  I'm always skeptical about joining forums because they're so many buttholes on them.  You folks have been great and I appreciate the advise.  Lots of good info on here.....scrambled my old brain cells a bit.....haha.
Far as new, good sounding, SS on a budget goes, these are hard to beat:  http://www.odysseyaudio.com/products-stratos-stereo.html  or  http://www.odysseyaudio.com/products-stratos-mono.html     Manufactured right here, in Indianapolis, IN.
Picked them up...hooked them up.   All I can say is I'm blown away. Have played several records I'm very familiar with.....most notably a '77 copy of Aja, some Count Basie, Zappa, Brand X, Art Pepper, Tomita.... I heard things I've never heard before. Also some digital 'net radio' and now some Donald Fagan-Nightfly on CD..... Now I need to re-arrange some furniture. Also, got the owners manual with it. Looks like it was kept pressed in a book. Mint also.... All original Dahlquist electronics on the crossover boards. I listened also with my sub on....added some bottom end which is probably lacking due to not enough power? I think they sound incredible without the sub. All in all, I'm a happy camper! Thanks for the advice. And now I know what imaging is all about!
You really lucked out on those speakers!
I wish I had more room, I'd get a pair myself.
Bob
You can never go wrong with Steely Dan!
I bought a new pair when they were released back in the day. Had to sell them when I moved into my college dorm room. Wish I hadn’t. 

Besides checking the crossover caps, I recommend replacing the woofers. Their surrounds are likely rotten. I bought another pair of DQ-10’s from an eBay seller about 15 years ago and inserted them into a system with a 200WPC amp powering them. The woofers gave way in the first 10 min of moderate levels of music, with detachment of the cones from the surrounds and driver frames.  
Happy listening!
 I recommend replacing the woofers
Don't replace the original woofers, just have them re-foamed if need be.  Regnar, (the Dahlquist factory guys) can re-foam them.  Bill Legall at MillerSound can do them justice too.  Even if you had toasted voice coils, they can be redone also. 

http://www.regnar.com/
http://millersound.com/
@ celander...yea, these were one owner, an electrical engineer.  He had the woofers re-foamed.  Crossover boards are all original and pretty much dust free.  He took care of them.  On another note.....I spent a few hours yesterday listening to many of my records...and some CD's too.  It's as if it's all new recordings or remasters!  Jazz and classical were especially amazing. Heard things I've not heard before.  My house is 103 years old so the living room is small by today's standards.  Best sounding speakers I've ever owned.  I owned a set of KLH 3-ways back in about '75.....those were close as far as I remember.  Picked up some records at the local used place yesterday.  Time to chill......