A-Z Subwoofer & Amplifier Repair

Dave and his crew are your one stop shop for audio repair… I’ve had him fix subs and amps… Always a reasonable price and relatively fast turn around. He responds to text and calls promptly. They deserve your business.

After 8 good years my JL Audio 13W6v2D2 took a s**t on me… I dropped off my subwoofer and let these guys work their magic. Now I’m back sitting in traffic enjoying my music like I should, A-​1 service and the could not beat the price!

i have never met someone who can fix anything and everything you give them in the car audio world. i am an audio installer and if i ever have an amp and speaker, david at a to z sub and amp repair gets it fixed within a day or two and at a price that surprises me how he even makes any money from it. He absolutely deserves 5 stars!!! give him a call.

They did an amazing job fixing my jlw6 subwoofer. It needed to be refoamed and patched up since it was banged up being in a car accident. Looks like new and I couldn’t be happier with it. Saved me a lot of money

Talked to David about problems that I was having with my Yamaha A/​V receiver, he knew what the problem was before having the receiver in hand. Brought him my receiver as well as a Focal Woofer from my car audio sytem. He replaced the coil and spider on the speaker, which worked perfectly. Unfortunately, I continued to have the same problem with my receiver. David offered to pick it up at my house and assured me that it would be repaired. A week and a half later, he called and said it was ready, this time it worked perfectly. The time delay was due to Yamaha lagging to ship the needed power supply to him. I will continue to use this business for my repairs and will recommend my friends, family and co workers to David!

Being a collector of rare subwoofers since the 90’s, I contacted David concerning a JL Audio 15w3D4 subwoofer I have where the foam surround deteriorated and was in need of replacement. I drove out and met David who is a very professional individual and knows his subwoofers, he offered to remove and replace the surround at a very reasonable price. I accepted and left her to David’s expertise.
The next day I got a call from David to come by, when I arrived and saw the work he did on my baby it looked like a brand new subwoofer with a definite upgrade of a more robust beefy surround. Amazing work, the sub sounds great! if you ever need any kind of foam/​rubber surround redone to your subwoofer, this is the place to bring your business!

Trustworthy and reliable! He couldn’t help me directly but pointed me to other people that could. They proved to be awesome and this is a sign of an all around good person and business man. He recognized my worry as a female getting ripped off and really helped me out. Thanks David!

If you’re looking for subwoofer repair, David’s the guy to see. I recently had a JL 12W3 fail on me when the foam tore off of the cone. Not really eager to spend a few hundred bucks on a new comparable replacement, I began to look online for repair options.
You CAN get refoam kits on eBay for around $ 20. For the price, the option presents itself as fairly low risk for those who have a good hands-​on aptitude. However, if you read the instructions for using these kits you’re required to remove the dust cap from the cone to re-​center the cone in the magnet. Sometimes repair kits include the centering tool, most don’t. Applying new foam without ensuring the cone is not only centered in the magnet, but centered on the spider is a recipe for failure, having a speaker that won’t sound quite right. That’s when I decided it was worth a little more money to have someone with the proper skill and tooling handle the task.
I found David right here on Unilocal when doing a quick Google search to see if any such repair business exists in San Diego. With enough kind words in his reviews I was confident that I could spend a little extra money to have the sub repaired properly. I called David and arranged a time to drop my sub off to him. He was very thorough when inspecting the condition of everything before taking on the task. He pointed out things to me, such as the existing misalignment with the spider, that he would address as well. Despite the heavy workload he already had, David had my sub back to me in two days not only looking brand new, but sounding better than ever.
To me, it’s a no-​brainier. All said and done the cost of the repair came out to an hour of labor and parts. For a little more than the cost of a refoam kit on eBay, you can have your sub repaired professionally and properly.

Paradigm subwoofer foam has disintegrated.
Paradigm said $ 185 and I would have to pay shipping both directions to their Canada location.
A-​Z fixes it for $ 65 and is done the same day. Been missing the boom bass of audio and now feel fortunate to have found such a great business.
Again Same day for ¹⁄₃ the price. Wow! David (the owner) is a standup guy that I recommend completely!
D.R.

They were very helpful. Reformed my 12w7 and fixed blown JL ¹⁰⁰⁰⁄₁ both work great again. They only had them for 24 hours. Glue on foam looks clean. Amp repair and reforming done for 300 buck. If JL would have done this. It would have been at least 6 – 8 weeks. Ty for quick and above avg service!!!

This guy knows his stuff, I took an amp to get it fixed, he got it up and running like new in a few hours.

I had a blown Orion HCCA 10″ subwoofer and David was nice enough to repair and return the sub back to me the very next day. Even though I’m still in the break-​in period, it sounds like an absolute MONSTER! He gave me some really great advice too. I’m very happy with his services. I’d recommend him to anyone and he will certainly be my go-​to guy for future repairs.

I have a 2002 Chevy Suburban. The original stock sub-​woofer blew out after 12 good years. Called Chevy and was told the speaker was discontinued. Went to a couple stereo shops. They said the speaker was specific to this vehicle and modifications would be needed to replace the speaker with a standard sub-​woofer.
Then I found A to Z. I was very skeptical of repairing the speaker because there aren’t many places that repair them. The owner David was very knowledgable of speakers and he said he could replace the blown out foam. I dropped the speaker off at his condo and the next day I picked it up! Looked brand new! Hooked the speaker back up and it was good as new!
Other great things… Way less than buying a new sub-​woofer and the old speaker didn’t end up in a landfill!

I shipped my amp to A-​Z sub and amp repair from Denver to be fixed. I could not find anybody in my area that could repair it. A friend of mine from San Diego told me about A-​Z sub and amp repair and how pleased they were with their services. I decided to give it a try and I am sure glad I did. They did a great job and it sounds like new! They saved us a lot of money. Very pleased and I will use A-​Z sub and amp in the future.

David just repaired a W6 subwoofer for me which I thought was a goner for sure. The product I got was as good as new. Though his business in at his residence I am very happy with my results and would recommend him for you audio repair needs.
Alex V

When our $ 800 Jamo stopped working after 10 years of dedicated service I was sure I’d have to retire it. But the sub was all we really needed, sounded great, and while some of the new Subs were very appealing we weren’t yet eager to spend a $ 1K dollars for something that wasn’t light years ahead of what we already had. So, I searched for a Sub Woofer repair center on Unilocal and A-​Z came up. When I called a gentleman named Dave answered the phone and, based on my description, said he can repair the sub. When I asked for a quote, he said $ 165 at worst and that would mean a new power board and Japanese-​made transistors (better quality). I drove to the address and, must admit, when I arrived and found it was a residential address I almost drove off. Given Dave’s professionalism on the phone though I decided to give him a try. And I’m glad I did. The Sub was ready a week later and works just as good as before.

David P. Kraft is a dishonest man who lies through his teeth about the services he offers. We brought speakers for re-​foaming and were told that for $ 70 the voice coils would be «polished and aligned» while doing the re-​foaming. When picked up there was no evidence of the cones having been removed for this procedure. When questioned, the story changed to «Well, we only do that after testing if it is really needed». Really? On the phone he said, «We do this on every re-​foam job so there is no chance of speaker failure, we only do it the right way so the customer does not come back with speakers that do not work properly». What a load of bull! He must have been a used car salesman for 30 years.
There was no offer of a discounted rate after this, AND the cones had glue all over them, so we paid $ 70 for half of what was promised and the quality of work was pathetic.
Also, he told us he was an authorized service center for Harman Kardon and JBL. So after this experience I called the main office in L.A. and spoke to the head of service there who told me he knew not of this man or this company, A-​Z Subwoofer and Amplifier Repair.

My boyfriend had a 12 inch JL Audio W6 which needed the foam part to be repaired. At first my boyfriend didn’t think he was able to fix it but with David’s help he was able to refoam the subwoofer and also replaced the voice coil and brought the subwoofer back to working condition for $ 160. Better then spending $ 700 on a brand new subwoofer. After my boyfriend installed it in his car, he said his car audio system sounded better then ever. So thanks David for your help and we do recommend his service to everyone!