Search results

Hi all! I have an old Velodyne HGS10 subwoofer. The amp is shot, which seems to be a common problem even after the amp is repaired. I am attempting to make use of it with an external amp and a Minidsp of eq'ing the low end roll off. It has a dual voice coil setup in a push pull configuration...

Hi all! I have a SX1010 that I'm in the process of refurbing. I've been using the rebuild list that is available here and it has been an amazing resource. I had one before that I sold foolishly and have missed it ever since. I have a few substitution questions as follows: On the muting...

I have a 1010 that I've been bringing back from the dead. All I need now is the STV-3H I ordered from germany. For the meantime, I'm using one I made following others instructions using 3 uf diodes in series. Anyways, The hi/low/-20db, selector, and stereo lights aren't working. The dimmer...

I have a SX-1010 that I bought (actually a 2fer deal) that didn't work. Upon opening it up, some work needed to be done (some to repair work already done). My question is that it has a STV3H horshoe diode attached to the right channel heat sink, and what I believe is a STV4H horshoe diode...

I have a sub that the amb blew up and took out the driver. It's really not worth fixing, but I thought having the variable frequency preamp portion could come in handy some day. I'm not the best with schematics, so I was hoping someone could take a look at these. I think I just need a 15-0-15...

I recently picked up 1 working, 1 non-working 1010. I would like to restore them both and I was going to use the most recent BOM I could find which is here http://www.audiokarma.org/forums/showthread.php?t=514144 When plugging in the parts into mouser, there were a few parts that are no longer...

I did my usual roundup of the thrifts on the east side. Stopped at Pawn America and what did I see? Kenwood Basic M2A $240 Kenwood Basic C2 $89 Boston Acoustics T830 $120 Boston Acoustics A70 Prices were somewhat high, but you don't see this kind of gear around here often. I grabbed...

I've had one of these for quite some time and love it. I know it's rated at 165 per channel at 8ohms. I've always wondered what it's rated at for 4 ohms because there is no mention of a 4ohm rating in the manual. I've searched the internet and there are a lot of people asking the same...

Hi all. I recently picked up an Alpha 440 that doesn't work. It's in excellent shape and would like to get it up and running again. I hope to use it to replace my M504 on Boston Acoustics A400's. I've done some trouble shooting and found that if I remove the 1amp fuse on the...

Hi all I was wondering how to identify the differential pairs in an amplifier. I may be acquiring an amp that stays in protect, and my hunch is because of high DC on the outputs (or shorted outputs). I wont know until I pick it up. I am not real good at reading schematics, but any help...

I recently happened upon an unbelieveable deal on a pair of JBL L100's in original boxes. When I get there, she asks me if I would have any use for for these and shows me a list of B&O stuff and I could have it. What ended up showing up was a Beogram CDX, Beocord 8004, Beolab 2500 powered...

Hi all I just picked up a pair of these with their original boxes, including the box the grills came in. Of course, the grills rotted, so I'll have to replace those. Got an incredible deal at $20, and she wanted to give me $10 back! Anyways, neither the tweeters nor the midranges work...

I recently made another WC-22 replica. On my first, I used a cut up mesh trash can, and while that looked great, I'd like this one to have the same type as the original. Does anyone know or could measure the gauge, hole diameter, and center to center measurements? I would, but I don't...

A thought just went through my mind. Would it be ok to use a car battery charger as a 12v power supply? I understand they can put out some serious amperage (short term). My question is would this work as opposed to a dedicated 12v power supply (such as can be bought from radioshack)? What...

I had my 3490 used as a preamp with a SAE 2300 amp. I plugged the amp into the switched outlets (i know, i know. I was planning on setting up a relay setup, but lost the time). It's been working fine since, but today the switched outlets no longer turn on. I have a service manual, but...

So I rebuilt the power supply and the driver boards (which fixed the wacky dc offset I was having). As a final step (for the time being), I wanted to re-grease the output transistors. I cleaned off the outputs and the heatsinks of the wonderful glue/grease they used and reinstalled with...

I've got the pinouts for the new transistor replacements as found on a sx1010bom list. The replacement pinout is easy, as the data sheets show a 3-D image of the transistor. Problem is reading the SM for original transistor lead orientation. I can't tell if I'm looking at the bottom/top or...

I just picked up a pair of these and upon getting them home was dismayed to hear one of the mid-bass drivers making a rubbing noise when I depressed the passive radiator. Upon removal and visual inspection, everything seems fine. DCR checks ok at 7.0 ohms (I think). Looking with my eyes, I...

Anyone have any info about this? There is lots of info about the 2200 and the 2400, but not so much on the 2300. I've even seen catalogs that completely skip listing the 2300. I'd like to be able to check and adjust both the offset and bias before I put this baby to use. Anyone have the...

I have recently come into possesion of 2 amps: An Onkyo Integra M504 and an SAE 2300. I would like to use both of these, but the problem is others that use this equipment may not remember preamp on 1st, off last. I've got the turning on part figured out. I'll just plug the amp into a time...

I recently got a SX 1010 for relatively cheap. PO said left channel was not working, so I powered it up and verified. I then hit all switches and pots Deoxit and faderlube. Left channel came back along with FM signal meters that were not working before. Measured dc offset and bias and offset...

I have a NAD 7130 that I got free from craigslist that has a minor hum that doesn't get louder with the volume control. I also have an oscilloscope that I got free from craigslist (anyone see a trend forming here?) that I'm slowly learning to use. Anyways, I hooked the scope to the speaker...

I recently aquired a set of A70's. I refoamed them, checked them out and found the tweeter not working. Opened them up again and found the 4uF electrolytic had exploded. Replaced it with a mylar, but still no tweeter. Checked it with a multimeter and it was open. Long story short, I...

I'm in the process of restoring a set of a400's I picked up with the help of AK member aretent. I decided to go the shim route with refoaming and thus removed the dustcaps. I noticed there is a ring of metal wire glued to the top of the voice coil that I've never seen before on other speakers...

I just finished refoaming a pair of A70's. I hooked them up to check my handywork and found 1 tweeter not working. I looked at the crossover and there's a 50v, 1uf capacitor thats split and leaking down the side. Now, I'm looking for a replacement, but don't want to pay $7 bucks shipping...