• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

He shoots...He scores! (my first)

natedogg643

Active Member
So there I was, making the TS rounds, taking most of the knowledge I've learned here in the past two months. I stopped into the fourth last one of the day, one I hadn't been to in a while because it's a bit far away from the others. As I walked into the door, on the left I saw two rather big speakers with the grills leaning against them. I pulled one back and saw HPM-900 staring at me. The surrounds were gone on both, but sadly, one of the brittle (carbon fiber??) woofer cones was broken. Of course, my heart was still beating much faster.

I pushed my luck walking further in...Soundesign, RCA, etc....then a pair of Genesis 110s, excellent cond. but for the surrounds & one 2" grill tear. Neither pair were marked with the price. I went up to the front and asked the guy for the prices. He told me, "I'll have to ask the owner about those..." My heart sank a little. But then she came out and looked at the HPMs, recognizing that the one woofer was eff'ed. She said, "This must be your lucky day. I'll give them to you for $5 apiece." Funny, I was thinking the same thing. I then took her over to the Genesis pair. She looked at them for a few seconds and quoted the same price.

So $20 and 4 speakers later, I'm euphoric. I haven't tested or cleaned them yet, but I'll post some pics later. Should I even hook up the HPM with the blown woofer? Also, do I need to do any kind of electrical testing before hooking them up to the HK 430? (I don't have a multimeter) Finally, are HPM-900s too much speaker for my receiver?

Thanks a bunch to everyone who's helped me out. I couldn't have done it without you.
 
Register to hide this ad
Get yourself a multi meter before you hook them up. You don't want to fry an amp. If they test out run them. I believe the HPM-900 are efficient and should be fairly easy to drive.
 
kfa888 said:
Get yourself a multi meter before you hook them up. You don't want to fry an amp. If they test out run them. I believe the HPM-900 are efficient and should be fairly easy to drive.

Do I need to take out the individual drivers and test each or just connect the leads of the multimeter to the speaker connections? What kind of numbers am I looking for?

EDIT: Just found the answer on a search...Off to get a meter...
 
Last edited:
I would still call simply speakers and see if they could re-build.... They did the whole speaker... If you get 'em both done you know what you have. You have no idea what true condition the replacement speaker is in. Others can comment on the risk.
 

Attachments

  • dss-9speaker new one.jpg
    dss-9speaker new one.jpg
    53.1 KB · Views: 37
  • dss-9speakers.jpg
    dss-9speakers.jpg
    51.2 KB · Views: 31
Last edited:
Testing Problem

I'm having trouble with the multimeter now. I calibrated it to 0 ohms, then when I connect it, I'm getting 0 ohm readings on all 4 speakers. That makes me think it's something I'm doing wrong. The setting I have it on is Ohm - X1K. Does that mean it takes 1000 ohms = 1 on the dial? If so, I think I got the wrong meter.

OMI - thanks for the info & pics - those look really good
 
I personally don't care to run drivers whose foam is gone to the point that it won't support the driver, FWIW. You could toast an otherwise fine driver - the sagging cone can/will put the voice coil in a bind. Some have mentioned placing them face up such that the cone sort of balances itself, I guess. That makes pretty good sense. - Mark
 
You should put the meter on 1x . Then the maximum deflection of the meter will be 10. I assume the HPM 900's are 8 ohm, so you will want a reading of around 8. + or - a little is normal. Nice score! When you get them running and do it yourself that will be the first of many accomplishments to come.
 
I guess I should get a different meter tomorrow

Here are the pics...
attachment.php

attachment.php

the broken piece (that fits nicely in place)...
attachment.php

What do ya think?

Nate
 

Attachments

  • genesis110s.jpg
    genesis110s.jpg
    33.9 KB · Views: 106
  • hpm-900s small.jpg
    hpm-900s small.jpg
    54.6 KB · Views: 135
  • bad woofer small.jpg
    bad woofer small.jpg
    41.6 KB · Views: 105
Last edited:
The HPM-900 would be worth the trouble of having them reconed. I agree with OMI, see if Simply Speakers still has some left. If they don't, you could have GordonW recone with paper cones--I believe he has done that in the past and had excellent results.
I'd try the home refoam for the Genesis, and then you'd have two very fine speaker systems.
 
Many here like the 900's and are well worth it to get them repaired. I agree with OMI about sending them off you'll know what you have and some kind of warranty. I have hooked up JBLs to a cheap reviever that the surrounds were gone on to see if they were ok. I would keep the volume very low and just long enough to see if they work. Checking with an Ohm meter is a good idea but 8 or so ohms is not very much. If you take a known resistance( Light Buld or resistor) and measure the speaker in series with the known resistance then subtract the known resistance it may save you buying a meter. Its a little Rube Goldberg but it works.

For those who may be interested.
http://www.rube-goldberg.com/html/gallery.htm
 
the pics were uploaded to and linked from my Yahoo briefcase...I figured I wouldn't waste the board's bandwith - let me edit my former post
 
here are my "BEFORE" pics. I agree with Bully.... If there are no more orig cones, then Gordon be the man!!!!
BTW if I remember the woofers were MUCHO BUCKS then the speakers came out... Seems like one report was $400.00 to $500.00 range JUST for one of the woofers.. If that was true they are worth the few $$$$ to re-build..
 

Attachments

  • orig speaker.jpg
    orig speaker.jpg
    83.1 KB · Views: 41
  • orig foam.jpg
    orig foam.jpg
    89.2 KB · Views: 28
  • org both.jpg
    org both.jpg
    90.5 KB · Views: 46
Last edited:
Well I go against the grain and if it was me I'd get the woofer from Ebay and refoam
the good woofer, maybe the new ebay woofer to depending on it's foam.
(even if you later decide to send the woofers for repair an extra one is never bad)

But hey I'm a cheap ass DIY guy and on a speaker like this (not some mega buck 10K
pair of speakers) I would find the replacement Ebay driver just fine.

By the way great score!
 
Hmmmmmmm..... Kegger has a point... Might consider re-build both AND get the one from EBay as a back up... These speakers are not quite like standard speakers. With dual VC there are 4 terminal connections on the spearker. Think I have a pic of the back of one at the house and will post when I get home.

here are pics of the back end of the woofers. Dual VCs...
 

Attachments

  • back1.jpg
    back1.jpg
    79.3 KB · Views: 24
  • back2.jpg
    back2.jpg
    83.1 KB · Views: 23
Last edited:
Back
Top Bottom