Customer Ratings & Reviews

See the difference!

I have these installed in my 2003 Mitsubishi Eclipse and I can tell the difference. My back panels and front panels used to vibrate and rattle, but with these in, you can tell the difference.

I turn my volume up, and it doesn't get anymore distorted. Sound flows straight out of the speaker and rattling is gone.

EASY INSTALL!

For $13, you get enough Dynamat for a pair of speakers, and its worth every last penny. Dynamat should charge more because these are worth it

good value

It is very heavy duty material. Easy to use. Only thing is, for both vehicle doors to be covered; you need quite alot of it. It can be expensive.

Works Great!

Easy to use!

Works well but the price is a bit too

Dynamat extreme is the original deadener and the product works well. It's a little thin compared to competition. And the price is just way too high for what has become a commodity in mobile audio

dynamat

great product! a lil pricy for what it is but it definately makes a difference

Dynamat

This really took out the rattles that were being caused by my front door speakers. I was skeptical but it worked great. Sound improved volumes.

My Sound Is Better Than Yours.

My first Dynamat product and it was love at first sight. The installation was easy. The Kit comes with more than enough product to cover any door covering. Great buy from SonicElectronix.

would i buy again, yes

very easy to use and well worth it, seals the speakers in nicely and eliminate door vibration like you wouldn't believe

Good quality

Easy to use. Good product

awesome stuff!

easy to install and cut with a razor blade. helped the bass response on my Kicker 6 3/4" door speakers. 2005 silverado crew cab.

Get this!

Hey shoppers, I purchased this Dynamat kit and more and let me say this stuff made my system sound louder and clearer. The bass is insane! I only run 1 12"..people think I have 15's..it's great and Sonic is the most inexpensive audio spot. I only buy from Sonic! Thanks Sonic for all the great deals!

great!

works great suppresses the rattling noise. Also the price is great; this stuff is really expensive at the shops.

Good!

The dynamat extreme kit is good. Easy to apply, and seems to dampen speaker vibrations. Buying a bulk pack seems like a better option, allowing for more coverage and a greater impact on sound quality.

The Best...

Nothing really beats dynamat, and this extreme product sticks quite well and is very easy to mold into curves and angles. Great price to boot. Thanks, SE!

Best Item!

If any part of your car is rattling, get this! And for a price like this, compared to retail stores or custom shops, get it here!

Dyanmat Extreme.. The way to go

I installed these with my new Infinity 6012i's. This stuff really brings out the life of my speakers not annoying rattle, helps the speakers hit harder, and is super easy to install. Took about 5-6 hours total with all dismantaling, reassembly, and prep work. Exellent product.

Dynamat

This product is amazing! I bought the Dynamat Extreme package (the 2 10"x10") to cover up my front door panel speakers because of annoying rattling. after installing the dynamat it was amazing. Also, for this low price it is a great deal. great sound.

Transmission Noise

I used this in my 2006 Mustang GT when I installed my new Hurst shifter. They are bad about having lots on tranny mouse coming through the shift boot so I put some of the dynamat around it and works great. Sound quieter than stock

Good Product and Investment

This product helps to maintain the rattling within the door panels of the car quieter. It's an easy installation and not expensive.

Quick cheep fix

i don't have speakers in my doors and i am putting my 6X9's in there on boxes because they are 2 big so i cut my pack of this stuff into strips an layed it around the whole back of my rear hatch on my blazer on the metal not on the weather stripping took the ungodly rattle away when the bass hit great deal

Loud, Cool, and Clean

Pros: Class D (Runs Cool), Small, Clean, Powerful. Louder than you can stand and no distortion. Good built-in crossover with DBO.

Cons: Cops apparently don't like your stereo to be louder than their sirens...

Opinion: Everyone thinks their equipment is the best and after spending so much time researching all the different models I can say I am very happy with my amp. Infinity gear is top notch, they are geared toward accurate music reproduction and true fidelity. This amp is a perfect match for the Kappa speakers as they are 2 ohm.

Notes: Another review stated that the power terminals are unprotected...Not true, they are encased in clear plastic and are not a risk for sparking.

Equip: JVC KW-AVX820, Kappa Five, Kappa 693.9i, Kappa 60.9cs, 2 Farad Cap... Haven't decided on the Sub...

CAN'T GET ENOUGH OF MY NEW KAPPA FIVE

I installed the Kappa Five on my sailboat in the main salon (it replaced my old Reference Series 5761a). It powers 4 sets of speakers throughout the boat (through separate Niles volume controls) and 2 subwoofers in the main Salon. Performance is absolutely superb (the water ripples abound the boat). The installation was clean & simple. The Sonic Electronix support staff guided me through the one question I had & they were just great. The only problem I have is I don't have enough time to spend on-board GUSTO II to enjoy my new Kappa Five. Thank you for a great product at a great price with outstanding customer support. Be assure that I will look to Sonic Electronix for all my future stereo needs.

great stuff

Great product. Love the easy-to-use install. Recommend for anyone with no stereo skills to use.

Great Amp

Excellent 5 channel sound, very compact and even after an hour of hard use was only warm.

Infinity kappa 5

Excellent sound quality I would recommend to anyone product arrived as promised

Finest sound quality

I have this amp for 4 months now, there I have connected a pair of Infinity Reference 6030cs and a pair of Infinity Kappa 62.9I, with an Alpine CDE-154BT, I started with a single Kicker TCVT82 (10TCVT82) and the bass was just OK, then I bought here another pair of Infinity Reference 1062W installed in a sealed box, with just one bass speaker was an amazing sound.... the sound is the best quality for the price, very good sound balance and quality, very good noise suppression.

Infinity Cappa Five

Best Bang for your money, does the job quit well, I have for 4 months and performs flawless. When I listen load music it runs hot but no problems.

Worked great until?

I have 2 of these units that i bought 10 months ago. One is in my car and the other in my son's car. Mine is still working great and his went out causing the speakers to squil. He was always adjusting his (teenager) but he did know what he was doing. I got mine set the way I like it and had no issues.
We are running kappa 4oms speakers/sub with a rockford head. Make sure that you put spacers (1/4" min) between the unit and what you are mounting it to or it will overheat. The techs with Sonic helped me order the system and helped me with hook up. So far with the return of my son's amp they have been very courteous and helpful. I havent recieved the replacement yet. So this review may change if it doesn't go smoothly. Overall i would recommend the whole Kappa line.

Output issues with the RCA's

The build quality of the amp is excellent. I may have just got a defective item. 2 of the channels for the speakers do not put out their full potential power. I have tried switching rca's and I even bought a new deck and new speakers because I thought the outputs were messed up on my Panasonic deck. Come to find out, putting all of that new equipment in did nothing. It has been the amp the whole time. But who would have known? It's a "new" amp. The two channels that actually worked sounded great paired with some rockford T1 components. I would suggest this amp if you can get one that works.

HQ Amp

Not the loudest amp on the market but it certainly will give you high fidelity sound. If you want to have monster thump look elsewhere, if you want to have studio sound this is the amp

DOA

i bought this amp for my F150 there were certain features that i liked . Like tuning from the top side , amp came in DOA, upon hooking up it sparked like a stick welder , that was the first hint , then i turned amp on and it went into protect mode, and buzzing from speakers , i shot it off and it never came back on , might have been good but i dont have time to keep swapping amps to see witch one works and for how long , i was afraid for a minute it might have blown my speaker all new including sub, including correct wiring, sonix has been very good they did take it back but i did not up for the same amp, i went Kicker CX600.5, A/B-D tech , same foot print , and i believe more reliable but did not get it yet when i do i will right a review. This Infinity amp is a great value and has lots of features but based on my experience durability would be the most important aspect , excluding sound quality that is also at the top of the tier.

great deal

if you want good sound then you have to use some of this. it does work. were you buy is up to you. but at less than half price of stereo shop and you can trust this company. I'd love to do the whole car with this stuff. stop road noise hear more music. but i only did the speaker holes for now

GREAT PRODUCT

THE DYNAMAT XTREME WAS EASY TO INSTALL AND REALLY MADE THE SPEAKERS SOUND MUCH BETTER WITH NO VIBRATIONS.

Safety Issue - not yet installed

The power and speaker connectors are not insulated. They are exposed and stick out significantly from the amp. The power connector sticks out at least one inch with the 4/0 AWG adapter. I don't have to tell anyone what would happen if a metal object were to contact the power connectors. Yes, the power wire is fused with a 100 amp fuse, but there will still be a lot of sparks on the way up to 100 amps, and some damage.

The other amps I've seen have insulated power and speaker connections. The Kappa Five will require me to fabricate some type of insulating cover to protect all the exposed (and hot) connectors.

Wish I would have paid better attention to that before ordering. My bad. This amp may work well for your installation, but be warned about the exposed connectors and take appropriate action to protect it.

I'll post a further review of operation & reliability if I decide to keep it, if that's possible.

Maybe it doesn't matter so much, but I'm a former aircraft electrician for 20 years in the Navy. I've seen plenty of sparks fly with a lot less current. If I keep this amp, you can bet those connectors will be shielded, and good.

The "2" rating for the design is for the connector issue alone. With insulated connectors, I would give the design a five and bump the other ratings up at least one point.

Great Value

These ring terminals are very good quality for the price.

I would buy these again.

Works good

The rubber part doesn't hold it on the greatest but with some electrical tape works perfect and very cheap.

Awesome

Had no problems with these terminals. Easy to crimp, and solid connection. Also, very cheap compared to other places! Would recommend!

e2 ERTC4-4 by Scosche

I bought the product for my son's truck. The product seems to be working well with his truck. We haven't owned the product long enough to tell you whether it will last or not.

Great

They are true to gauge and they work perfect no cons just plug and play

great buy

i have this hooked up to my kicker zx1000.1 amp that powers my 2 L5's. GREAT BUY

Quality Ring Terminals

When i got these i slipped my wire in installed it in my car and was done. no problems works like a charm. good value.

Work like they should

They are strong and easy to work with. I just ordered more of them to use for my car.

Good Terminals

These are some good terminals, but are hard to solder, so please Sonic sell proper solder ring terminals.

Did the job

Nothing special, did the job. Quality as expected for the price and crimped well. Soldered well, and the jacket is good quality.

They're OK

If you're using them in the cab, this are probably fine. I used them in my engine compartment. I had to take off the crappy plastic covers and use heat-shrink tubing to get what I wanted done and ensure they would last in my engine bay. The plastic is pretty weak, and the metal rings are just OK.

actually 2 gauge

I don't know if I got a bad batch or not but these connectors are way too big for 4 gauge wire. They fit better on 2 gauge wire.

Hi Quality Wire....

I used this kit to install a Hifonics amp in my grand cherokee.
The quality of the wire is very good and flexible.
However the 4 gauge wire postive wire has a built in connector on the battery end that has a whole that is way too small for putting a side post bolt through... I had to grind it out to the correct size. That is my
only gripe. I would recommend this product anyway.

4 guage terminals

These terminals made connecting my capacitor really easy. Would definitely buy again

works

I didn't have a big enough crimp so I just used a hammer to hit it into place on top of cement or a metal object.

Good quality and price

Very happy with the connectors, found them to be good quality during installation. Would most definitely use them again.

PA600 with 4 DXi650

I used this kit to put a Polk PA660 behind 4 DXi650s. The kit is beautiful! The fuse box is awesome. The 4G hot and ground wires are flexible and are very high quality. This kit contains some of the best speaker wire I have seen. I didn't need to use the speaker wire it in my 07' Civic, so wired my 3 year old's Cerwin Vega D5's with it in her room. The RCA's are nice looking and now my car set up is wired professionally from home! I chose the 4G over the 8G so I could split the wire to 2-8s in the trunk for 2 amps later.

def worth it

After looking at a few kits I decided to go with this one. The price was a little higher than most but omg is this stuff great. its extremely flexible, provides a vast amount of power to your system, looks cool, and sounds great! lots of copper stuffed in these things. Highly recommend it

works

They are ring terminals, they do what they do....what else is there to say...

e2 ERTC4-4

Does what it is supposed to.

Best

Very good!!!

Great Value

Quality product , good price and shipped fast.

heavy duty product

At first I thought the price was a little on the high side but when I opened the package I was impressed with the quality and amount of product delivered. I felt I got good value for my purchase.

All you'll need for a 4-Channel Amplifier

I'm very happy I chose the Kicker Amp Install Kit with RCAs. High quality 4 gauge that not only does the job but looks real pretty under the hood. That Fuse holder with 100 amp AFS fuse is no slouch either.

Best amp kit I have ever owned!

The cables that came in the palate were of the best quality I have ever owner, the length of the cables were more than enough for any at home, normal installation. I have an 02 ram 1500 extended cab and was able to run a power an ground to my capacitor and had enough cable left over to use the cables from this package for the power and grounds on two more amps. I still have left over remote cables and the RCA and fuse block were amazing. I recommend this kit to anyone who wants to run great deal of power the right way.

good price

not much to say just that they work great

Heavy Duty

Has all you need to install an amp and is good quality product.

Good, but make sure you have what is needed to bend them

These work great... if you can bend them correctly. you need more then just a pair of pliers to get them to stay on 4 gauge but once you do get them tight they will stay for a long time. I've had mine for 6 months and they are working great.

Plenty of cable plus more!

I bought this kit to pair with my Kicker IX500.4 amp, and it works as should. I even had about 8ft of power cable left after my install. I would recommend this kit to anyone who is installing an amplifier in their vehicle.

great price

good connectors good price highly recomend

Get the job done

These are cheap, they work well and really last forever.

Sounds very clean

Installed my crown Victoria pushing 4 Polk db 6x8 and one jl 10w1 in a slot ported box.Amp sounds really clean and eliminated a lot of noise common with crown Vic's.The 200 watt sub channel is fine for my JL ,punches well and I even turned it down a little with my eq.The settings are pretty simple and straight forward my only complaint is the lack of gimmicks like light up logos and such but it is a solid piece.I would recommend this amp especially for the price (black Friday) coupon.

By brian on November 25, 2023 Verified purchase

worked as expected

these work as expected. easy to install and was priced right,

Very pleased

They worked great. Easy to work with. Only prob I had was the holes where not big enough. Had to bore them out. Still very good for the price

Product worked great.

Shipping was timely, product was as advertised, phone help with ordering was great, product worked great.

Great Buy

Good quality connector, but the wire covers seem to be a little bit oversized.

Ring Terminals not much to say they work like they should

I like em, they were easy to crimp I used a table clamp works best and sinze soldering fail I melted the wire surround to help it adhere

E2

This ring terminal work very good when connecting your 4 gauge wire to any battery.

Nice Look

These are nice terminals, why pay more. They work just the way they are supposed too. Solid Product.

It works

Made the sound bar in my Jeep sound 10 times better

Great Value

May not be name brand but definitly good quality and hold up real well would recommend to anyone.

excellent and cheap

Yep had this worked great, used it to hook my cap to my amp, very easy to crip and seem to be made of good quality. Oh yer price is great too.

GREAT ITEM, GREAT COST!!!

Work great easy to crimp how ever if you dont crimp them tight enough the wire can easily slip right out so make sure you do it right or you'll have lose wires all over!

great product

good product for very cheap. very durable

Nice and fat

Power wire fits easily in and stays in. Fantastic value, and very nice looking!

Good value, can't ask for more.

These are as nice and work as well as any ring terminals I've ever used, at a very good price. Several different brands of 4ga wire all fit fine, no complaints.

Good and durable

You can crimp these with a pair of channel locks but go the extra mile and get a butane torch, some flux paste, and solder and solder your power wires for better conductivity.

Great Ring Terminals

Great quality terminals. Could be cut and bent without breaking. I ended up soldering mine with a torch

good product

Good item fast shipping great price looks great Sonic is the most reliable company.

easy to use, best bang for buck

super easy to crimp and solid terminal. no problem in using these puppies!

This product is good to go

Used these on a cap install and it worked as needed. I would buy these again.

By Anthony on August 16, 2015 Verified purchase

good buy!

I bought these a few months back for my NVX 0 guage wiring and it is still holding up just as tight to this day as good as it did the first day i bought them!

Great Product

I used this on a RV to but in a video/audio system and I really liked the amp kit. Nice a heavy wire and the fuse was nice heavy plastic. You will never go wrong on kicker, so I would tell any one to buy this. I'm thinking of upgradeing my wire to this down the road.

Kicker ZCK44

This cables were more then what I expected the Kicker cables are very flexible and easy to work with specialy if you put all cables under the carpet and seats overall very durable and flexible cables highly recommend

Awesome Box

Great sound, good fit what else is there to say, Sonic Electronics great place to buy from

very nice

i got this free with an amp i purchased but i already had kicker wiring in my car so i put this in my brothers car without him knowing and the next day he was wondering why his bass was louder!! this wire is silver tinned copper and is silver in color

Kicker ZCK44

Excellent wiring package. Used it in my car this summer and had plenty of wire to run from the battery to the cabin. Would highly recommend this product to someone looking for a good wiring package!

Kicker Wiring Delivers a Kick

I got this Kicker wiring kit to hook up my Pioneer deck, speakers, and amp. As a Kicker home entertainment speaker owner I had high expectations for the quality and performance of this kit and Kicker once again blew me away. I had more than enough supplies to wire up my Ford Ranger twice. I will be going back to Kicker to wire up a sub down the road.

Great Kit

Complete, easy to install, great value.

Nice wiring kit

This kit came with everything that I needed to install my 4 channel amp. It cost a little more than I was looking to spend but was very well worth it. All of the components were very high quality. Even the speaker wire was very nice; something that is usually over looked. Definately worth the extra money to get instead of the lower priced off-brand kits.

great kit

This a high quality wire kit. the wires are wet noodle flexible. I am completely satisfied.

Kicker ZCK44 (09ZCK44)

These are awsomes sounding speaker. You can not beat the price. with all Kicker items the quality is awesome.

Junk

Used it for one weekend before it fried!

very nice kit

Nice flexible cable, good ends, overall great kit!

Great Sound

These are great for any kind of subwoofers. It has all the wires and hook ups that I needed included.

Good terminals

Just what I needed to hook up a vintage audio control esp2

By Chad on September 15, 2017 Verified purchase

Kappa 5 channel

Great amp for the price no complaints at all

By Shane on April 29, 2026 Verified purchase