Klipsch Forte IV Speaker Review.

Klipsch Forte IV Speaker Review. The Klipsch Heritage Sound.

By Steve Huff

My video review of the Forte IV!

It wasn’t that long ago that I sat down to write my review of the Klipsch LaScala AL5 Speakers. While the LaScala have always been “Dream Speakers” for me, after 35 years of chasing “The Sound” I knew I had something very special in my room once they were placed within it. It was as if the music started to flow through them like blood flows through our veins…giving life to the sound. It was so so right and no matter the music I played, they sang their hearts out and sounded downright gorgeous doing it.

The LaScala’s offered me everything I have been looking for in a speaker and while the size of these beasts are not for all rooms or for everyone they can indeed work in rooms that are not huge or even large. In my 12X18 room the LaScala are the best I have ever heard in my 35 years of HiFi.

When it comes to musicality, enjoyment of the music and the realistic presentation of live music that sounds electric, visceral and exciting these are truly special instruments that breathe music. I listen to all genres through them. Jazz, Vocal, Rock, Metal, Bluegrass, Pop and whatever else I am in the mood for.

Even so, not everyone will be able to bring in a speaker such as this into their space. They are huge, heavy, expensive and depending on your tastes may look gorgeous or may look a bit odd.

The Forte IV’s are indeed re-voiced from the III just like the Heresy IV and Cornwall IV. 

The good news is that Klipsch has a few models in the Heritage lineup that can suit any space or need. The even better news is that they all have the same overall sound character. Big, Real, Spacious and with superb vocal and instrument reproduction. These latest Klipsch Heritage models are speakers you should hear if you are passionate about music. Yes, Paul W. Klipsch knew what he was doing back in the day when he designed those first models but today Klipsch has amazing people who have made them even better than before.

The new Klipsch Heritage series have been KILLING IT and for me and my ears THIS is what music reproduction should sound like. After hearing the LaScala in my space, I can not go back to any other speakers in that room. When I do, I lose many things. Scale, realism, and the live feel of a real musical performance. I lose the effortless ease in the way the music is reproduced. It’s the way the vocals come in to the room that do it for me. Lifelike and with a super eery realism that will NEVER EVER bore you. They draw me in to the music like none other, regardless of cost of the “others”. This is why I chose them as my reference system speakers.

The Heresy IV (my review), The Cornwall IV (review) and LaScala (review) have all been reviewed here on these pages and in video as well.

Oh and BTW,  I loved them all as all of them are excellent for their intended purpose. All of the Heritage speakers have a purpose for the right size room and space. No matter what model you go for rest assured you will get the Klipsch Heritage sound in your space as they do all share the same live and exciting sound signature but you do get more of the good as you move up the line.

The front and. back of the Forte IV. The 15″ Passive Radiator helps bring serous kick and deep bass to your music. 

The One I Never Heard is the Forte

Today I want to talk about the Heritage speaker that so many consider the Sweet Spot in the Klipsch Heritage lineup, the Forte IV. It is taller than the short and squat Heresy IV and thinner in width than the Cornwall IV yet the Forte IV offers more than just a “smaller bigger speaker” over a Cornwall or a Heresy. In fact, this is the only Heritage speaker to offer a 15″  passive radiator in the rear for more kick and depth to the bass. The is in addition to the 12″ woofer in the front!

Yes, these are quite different from the rest of the Heritage line just because of this reason. While the similar sound character is still there these are the speakers in the Klipsch Heritage family that do sound the most like an expensive audiophile speaker. Wether that is a good thing for you or not is up to your tastes but I have been enjoying these beauties for a little while now and they have surprised me again and again. Thee are not like the Klipsch of old my friends, rather these are top tier beautiful speakers that I will share all my thoughts about below.

The new Forte IV has also been completely re-voiced from previous versions and uses more premium parts where it matters.

When I placed them in I wasn’t sure what to expect in my room. I assumed I would possibly have TOO MUCH bass with these beautiful beasts but seeing that I have never reviewed a set of Forte speakers, I was excited to give them a try.

I have owned my Heresy IV’s since launch. I have owned the Cornwall IV and also now own the LaScala’s. I have become quite a huge fan of the modern day Klipsch heritage sound as you can tell!

Klipsch Forte IV Review

But first…A Thank You

My good friends over at Paducha Home Theater are the ones responsible for this review as they sent over a set of Forte IV’s for me to check out after I showed interest in them when I bought my LaScala’s. They also sent over a set of extra grilles, the super cool Lambs Wool variety that are usually reserved for the distressed oak versions of this speaker. Turns out when you buy a set of Forte’s from Paducah Home Theater you can also customize the grille and have a set like these sent along with your order (if you so desire and want to pay for them). They will also send you a super cool poster (if they have stock) along with them and these posters are gorgeous.

Klipsch Forte IV Review

The set of Forte IV’s they sent over were the Cherry Forte IV with the included salt and pepper grilles and the lambs wool grilles. I think the Cherry models look amazing with both grilles but especially nice with the lambs wool. They are certainly beautiful to look at.

BTW, before I get to the review I want to say that Cory at Paducah Home Theater offers these speakers (and all Klipsch) at an amazing price so if you are in the market for ANY set of Klipsch, be sure to call them (270-556-8427) first and get a price quote. They also have tons of stock, ready to ship. I should know as I was able to visit their warehouse and see it for myself. A super group of people over there in Paducah and I want to thank them for this opportunity. See their website HERE. 

Inside the Paducah Home Theater Warehouse

The Forte IV Listening Experience. 

When the speaker arrived (they ship via freight on a pallet due to the size and weight) I managed to get them unwrapped and off the pallet easily even tough they are large and quite heavy at 72lbs each (when unboxed). With that said, I had to have them shipped to my Mom’s place because I live so remote that semi trucks can not use the roads around here. I am very rural and the big rigs will not drive here. It was a bit of a drive to get them but they arrived one day after they shipped, which was crazy. I drove out to my mom’s place and met the truck driver on delivery day after he called and told me he would be there at a specific time.

After I brought them home I was able to set them up with a little help from Debby. She helped me unbox them and then it was easy to place them where they needed to be.

Soon, I had them set up in my dedicated listening room and started playing some tunes I know well. The first thing that struck me was that they sounded different from the Heresy, Cornwall and of course LaScala. The big overwhelming bass I was expecting was a no show and they sounded a bit more detailed on top and a tad thinner in the mids than the LaScala and even the Heresy. Of course these were brand new factory fresh speakers so I let them run in for about 8 hours and then came back to listen again.

When I cued up some good old rock and roll and cracked them up these Forte IV’s KICKED ME IN THE CHEST with Bass when called upon. This bass is not in the mids though, so you will not get that muddied up midrange that can sometimes come with a fat mid bass. Rather the Bass is in the bottom. The Depths. The lowest registers. It plays bass that the LaScala misses entirely and this is what makes the Forte IV’s remarkable. If you love your deep bass, you will absolutely love the Forte IV and I would say even more than the Cornwall IV. No, even the mighty Corns can not do this kind of dramatic kick and punch with deep deep bass.

If it is a deep driving bass you are after let me say it again. The Forte IV’s can deliver it cleanly and without boom or mud. These are tight and have a punch that is superb for music that thrives with that punch.

IMAGING is SUPERB with the Forte IV

Song after song I was impressed with the way these speakers image. I would say that these are best imaging speakers that Klipsch makes in the Heritage line and they image better than some high end bookshelf speakers I own. In this area, they beat my much more expensive LaScala. The sound character here is clean, sparkly, detailed, large and 3 dimensional and the Forte IV do these things very well and moreso than the other offerings. These are audiophile in sound and still offer that engaging live real sound that Klipsch is known for. In my room and system these are also the most “treble centric” of the Heritage speakers meaning that have a bit more sparkle up top and with this comes the air and precise instrument separation. They are not as warm leaning as the Heresy IV our LaScala and sometimes they can sound a little bit more forward than those speakers.

As I have hinted at in other recent Heritage reviews, there’s something very special about all of these Version IV speakers from Klipsch. These are no longer shouty, overly colored in sound nor are they harsh in any way, shape or form. Klipsch of the past (70’s and 80’s) had these kind of issues at times and is why so many say (and think) that Klipsch can be bright. Today’s Klipsch is not bright at all, nor do they have ear piercing highs. No matter what model you choose in the Heritage line the new models offer up a slice of musical bliss and models should be chosen by your likes and desires rather than just size.

Two versions of the Forte IV grilles. Lambs Wool and Salt and Pepper. You can also see the Heresy and the LaScala along with a Pass Labs XA60.8 Monoblock. 

A Quick Comparison 

For example, the Heresy IV’s offer alot of what the Forte IV and Cornwall IV do. They just sound a bit smaller, a bit warmer and work best in smaller rooms. The Heresy IV are like mini Cornwalls in the way they produce sound. They bring the same character and with some pretty nice bass on tap due to the new rear port.

The Forte IV bring more of the audiophile sound to the table and have amazing imaging and soundstage with an even bigger sound than the Heresy. That passive radiator in the back brings in the deep bass that NONE of the other Heritage speakers can muster. For rock, metal, rap, hip hop, EDM and music with a kicking deep bass, the Forte IV truly do rule the roost.

The Cornwall IV’s just sound so fluid and offer up a huge wall of sound with the same overall vibe as the Heresy but sounds as if you stacked 4 Heresy IV’s together on each side of the room! The Cornwall’s do not bring the ultra low deep tight bass that the Forte IV’s bring but they have a fuller sound through the midrange bringing a bigger voice with vocals and even instruments.

The LaScala’s bring the biggest sound of all, with a gorgeous smooth and warm leaning midrange that makes it appear you are not missing any bass at all, even though they do not do deep bass. The magic with the LaScala is all in the voice, the midrange which is absolutely mind blowing good.

I have to say though, the Forte IV’s are truly in that sweet spot in the Heritage range if you ask me. They are not nearly as wide or massive as the Cornwall in size yet they are not short and squat like the Heresy. They look gorgeous in the flesh and truly look and feel like the high end speaker that they are. They can fit into almost any space and the bass in my 12X18 space was never ever bloated or overcooked. In fact, for some music they sound a little less full than the little Heresy which brings the detail more forward on the Forte IV’s. But they never sound bright when running them with the pass labs amplification I have here.


This brings me to something I want to talk about. Amplification.

These speakers and all of the heritage line will sound different depending on how you drive them. I have run these with many amps and the sound ranged from thinner and brighter to bigger and fuller all depending on the amp I chose to run them with.

With something like a Naim Atom the Forte’s sounded a bit hotter on top and thinner in the mids and I would say this amp is not a great match with the Forte IV. With a Cary 300 SEI tube amp the Beauty of the sound came out but the amp itself hummed so bad it made it unusable with the speakers.

The transformer of the Cary hummed/buzzed and therefore hum was pouring out of the speakers due to the speakers high sensitivity. This was with a brand new Cary 300 SEI I was going to review. I had another one delivered and it had the same issue. I therefore concluded that this amp should never be used with any high sensitivity speakers yet that is what this amp was made for. Had me scratching my head but two defects? Maybe. In any case, I would not recommend this amp with Klipsch speakers though from what I could hear the 300B character is very nice with the Forte. Just a thinner sound than what I hear with Pass Labs.

With a $500 Chinese el34 tube amp (THIS ONE)the sound was plump and musical as can be but lost out on overall resolution and mid bass. It was very nice and well worth the cost but the sound was again, a bit thinner.

The Forte IV next to the Heresy IV

With a Pass Labs INT25 integrated there was serious magic happening. It was full, fluid, detailed and holographic and was so so so smooth and powerful sounding. With the Pass Labs XP-10 and Xa60.8’s running all Class A the sound was about as magical as it could be.

After using many amps with all of the Klipsch Heritage (latest Version IV’s) speakers  I consider Pass Labs a perfect synergistic match with them. There is absolutely NO hiss, NO noise and the silent black backgrounds are awesome to have with such sensitive speakers. With Pass there is a touch of warmth, big bass, full body and ever so sweet details with a big wide soundstage bringing the performance to the room.

I have also heard them with a Yamaha integrated and a PS Audio Sprout 100. They sounded good but not as good as the tube and pass options above. To me the Yamaha amps add a bit of dryness to Klipsch speakers. You may not hear this unless you compare it to something else, but it is there. The Sprout is great for the cost but you can get much better sound from the speakers than this little amp can muster.

So how you power these speakers matter and from my experience todays Klipsch is not necessarily better with tubes. To me, Class A solid state power is what these speakers love the most and this is what brings out the body, life, sparkle and bass that you want from these.

Sure, there are Class A tube amps that could and may be gorgeous and I plan in trying a couple of them soon as I did hear magic with the Cary 300 SEI when I blocked out the noise/buzz with my mind : ) I knew it would have been special if it were quiet and I would love to hear a nice 300B design with them. As of now, I love the combo of Pass Labs and Klipsch Heritage. The Cary SLI 80 HS is supposed to be wonderful as well and Klipsch even recommends this amp with these speakers. I have not heard this combo.


The Forte IV do offer the same sound signature and character as the other Heritage Speakers. You can even hear this for yourself in this video I made comparing the Heresy IV, Forte IV and LaScala all playing the same song:

While you will not hear what they sound like in my space you can tell that these all have the same house sound. In person though, the Forte IV are slightly more detailed/sharper and have that amazing passive radiator that adds quite a bit of bottom end to the music.

Listening to “High by the Beach” by Lana Del Rey can be a great judge of the bass performance of your system. This song overdoes the bass in my opinion and if your speakers can handle it without boom and mud then you have a great set of speakers. The Forte IV brought out this bass in such a remarkable way due to that passive radiator. It’s so clean, so impactful and so “OOMPH”!

It doesn’t boom or muddy up the mids or highs and that is important as not all speakers can accomplish this feat. When I play this though the Heresy IV the bass is much less pronounced and doesn’t allow me to feel it. Through the LaScala this song sounds fantastic but that big bass is well, missing. Even so, it sounds full bodied and amazing through the LaScala, which is the special trick that those speakers can do.

The Forte IV’s present the music with a wider soundstage than the Heresy’s and with more air. The instrument separation is also quite impressive with the Forte’s and they do so with more precision than any other of the Heritage speakers. This is why I say they are the most audiophile speakers of the bunch. They somehow accomplish this while remaining immensely  musical and bringing that same live energetic sound to your space.

What about small scale jazz or vocals? 

Playing “If You Love Me” from Melody Gardot her vocals are dead center and so realistic with the Forte but compared to the Heresy IV and LaScala the midrange is a bit different. It’s cleaner/not as full bodied and a little more recessed as if she is farther back the room.

These speakers focus on the whole rather than a part of the music. While the LaScala’s magic lies in the mids, and the Heresy does very well with acoustic instruments the Forte do their best to deliver the goods in all areas. From top to bottom. There were some songs I preferred the Forte and some I preferred the Heresy. I do not see either speaker as better than the other but I will say I do prefer the looks and style of the Forte over the Heresy. It all comes down to your personal tastes and what you like.

The Forte IV are more traditional looking and would really look stunning in any space. They also come in black, cherry, walnut or distressed oak. Take your pick.

At the end of the day the Forte IV are another set of wonderful speakers from Klipsch. They have a little more top end energy than the Heresy, Cornwall and LaScala but this can bring a more visceral electric live feel with some music. These are the only set in the Heritage line that has deep kicking thumping chest rocking bass and also the most audiophile sounding of the line.

I think it’s awesome that Klipsch has such an impressive lineup of speakers in the Heritage line and if I can be honest, they are some of the most musically satisfying speakers I have heard in my life. They breathe music and bring out the nuances and realism of the performance.

The Forte IV are truly the sweet spot as they offer it all and will fit in to almost any space. I will also say that after about 100 hours on the speakers they opened up quite a bit, and relaxed a little. They sound gorgeous and I have a hard time picking which set to listen to on some days. That right there says alot.

If I were to buy a new set of Klipsch from Scratch and I was deciding between these and the Cornwall IV I would choose these over the Cornwall IV unless my room was HUGE simply due to the passive bass radiator in the back. This makes a ton of difference if you like that deep bass kick that is clean, tight and fast as all get out.

Bravo to Klipsch. They have done it again! Highly Recommended. 


Again, if you are looking for Klipsch do not buy until you give Cory at Paducah Home Theater a call. They have great prices and amazing shipping. You will also get that free poster and can also choose to go with the lambs wool grilles if you desire them. You can reach Cory at 270-556-8427. 




  1. Hello Steve,
    It’s been a year already since I got my pair of Forte IVs; due to the fact of living in Mexico City I cannot audition good speakers easily and, definitely, I do not have the option of returning a purchase. I read and read and read reviews and watched many videos trying to learn and use that knowledge to make my decision and, now after a full year, I am even happier than day one with my Forte IVs!!!
    Your review was one of the ones that added most of the specific weight to the equation; I had the intention of thanking you since a year ago but I delayed my message one year on purpose as I wanted to let run all that time to delete any bias due to the excitement; now I can say for sure that you helped me a lot to take the right decision and these are the best speakers I could’ve chosen. The speakers are driven by a PrimaLuna EVO400 power amp, no hum at all, just euphonic sound all the time!!

  2. I have heresy 1 and 11 have been jamming them since 80s with a denion I had Fortaleza but were stolen.i would love to replace them again but my sound with these are tried and true but the 1 are starting to show sings of age on the top end with power should I upgrade by replacing the woofers with update or just replace them

  3. Thanks for your reviews and sharing the music you listen to. Happy Heresy IV owner! I use them with a Marantz NR1200 (solid state) for movies and swap out the cables to a Cayin MT-12N EL84 tube amp for music. The little 10 watt tube amp sounds fuller and more 3D than the 75 watt solid state and plays just as loudly. I believe it’s our passion for music that drives our hi-fi hobby. Your words and the time you spend posting your reviews is very much appreciated.

  4. Are the klipsch forte iv too big for a 10 by 11 goot room, its the biggest room i have and nearly bought them on a mad whim but thought i should not get over excited and make a mistake, they could be set up 6 feet apart but would both be close to the side wall..thank you for the time if you reply..

  5. After reading your extraordinary highest recommendation for the Wilsenton R8, I’m suprised that you did not try it with the Forte IV’s, but instead with the Cayin and a $500 no-name Chinese el34 amp–before declaring these to work best with solid state.
    Do you not have the Wilsenton R8 any more? Has your opinion on them changed?

    • The R8 and Klipsch sound great. But you can do much better if you want the ultimate quality. The R8 competes with tube amps in the $3500-$5k range but it doesn’t beat all out synergy with other amps that sound better with the speakers. I have heard the Forte IV with low powered SET tubes, low powered class A solid state, high power tubes class A/B and high power solid state. The best sound I have gotten is from solid state, Class A sound and the little AMP23R which is Class A/B though I feel it runs class A for the first few watts due to the heat it emits. There are many options for these speakers in regards to amplification and the only kind I would avoid is Class D. Any of those I had in here sounded a bit sterile and flat in comparison to the rest.

  6. Good afternoon Steve,

    First, off, my wife says that if I keep buying stuff after reading your reviews, she won’t allow me to read your reviews anymore! LOL! My near field triangle is set up in one end of a 15 x 25 foot room, and contains Klipsch Heresy iii’s, Bluesound Node 2i streamer and a class A tube amp. I’m set up similiar to what you use for Heresy’s. 7 1/2 feet between the speakers, 1 1/2 feet in front of the wall behind the Heresy iii’s, and they cross right behind my head in the listening position. I’m thinking about the Forte iv’s after reading your review. Did you use roughly the same setup for the Forte iv’s as for the Heresy’s?

    Thanks for the great reviews!

    Bill Beaumont

    • The Forte IV’s are a bit bigger sounding, a little more tipped up in the treble and have that deep kick from the bass radiator. I would not say they are a huge jump up from the HIV but they are bigger and cleaner sounding. I like to toe in the H4’s a bit and the Forte IV not so much. I feel they give a wider soundstage and sound smoother when barely toed in.

  7. I love your channel, and I feel pretty set on getting a pair of Forte IVs. I would be pairing them with a Marantz 2226B receiver. I know that’s not the fanciest amp, nor a tube amp, but I am curious if you feel that quality of system pumping out 26 watts per channel would suffice? Thanks for your time and really enjoy your content.

    • Great speakers, been listening to my Forte IV again lately. Such a big LIVE sound. Love them. I have never heard that Marantz though so tough to say. The only thing to be careful of with these speakers is the top end. If you have a thin or bright amp, they can be too much of a good thing up top.

  8. Hello Steve,nice review
    One day I would like to try Klipsch Heritage speakers to see if they can match well with my Line Magnetic 845ia which is on a spicy side.
    Speakers are in 13×21 living room ,one in the corner and other one in opening to a dining room,not really perfect.
    Which ones do you think would work best in my situation ?
    I like relaxed top end,tight bottom and nice ,big voices

    • If you like big voices, I haven’t found anything that portrays a bigger voice than the LaScala. But they all do voice very well. Heritage can be hot on top with some systems. It’s not your amp though that is doing that, it would be your source or DAC. Find a nice musical DAC with some body and warmth and you would be very pleased I think ; )

  9. Great review. If you get the opportunity, you may be interested to hear the Class A amps from Riviera Labs. Apparently their head designer had a hand in voicing the Klipsch Heritage line and I know you love Class A (me two!), so seems like something you’d get along well with. Obviously Pass Labs is taking good care of you, but it’s always fun to hear new combos.

  10. Hey Steve, I have the Cary CAD SEI 300B original version and the Fortes as my combo. I know of the hum you’re talking about. However that sound went away and the amp is now quiet. I know of the sound you talk about combining the Klipsch Fortes. It does play a sweet sound indeed. Its unfortunate that you 2 instances of the hum, because I absolutely love this combination. Although I have a feeling your Pass Labs will surpass the Cary with more extension and detail. Happy listening!

  11. Despite the fact that vinyl sounds better, I am ashamed to admit that most of my listening is from an apple tv digital out. That said, the beauty of a tube amp feeding horns makes pretty much anything sound amazing. As compared to the dry sterile but accurate presentation on the Meridians in my wife’s car, the same music sounds lush and smooth when the same harsh digital feed is Klipsched.
    Currently using K-horns with audioquests from mc275 with a solid state mc100 ss preamp/dac.
    Nice review on these. The accurate guys will howl at the false soundstage and overly smoothed “musical” presentation but like my pictures, I go for beauty and character over accuracy. Everyday of the week.

  12. Steve, great review. I am an audio newbie so please forgive the question…
    I have the first generation Forte speakers running on my Sherwood R-965 receiver. Love the sound BUT how do I know that I’m getting the most out of them; are they working properly, etc. Short of having an experienced audiophile like yourself come for a listen is there any kind of test that can be run? They are, after all, 35 year old speakers that I acquired from an estate sale.

    • Hey Ed. The bottom line? If you love the sound then that’s all that matters. New is not always better, just different. With that said, speakers that old usually have parts that need replacement and the sound does fade over time. What you would gain from new speakers and amplification would be a bigger more vivid and wide presentation with that imaging I spoke of in the video.

      • Steve,

        Did you use the 8 ohm taps with the Willsenton R8 or the 4 ohms with the Klipsch Forte IVs?

        Does one matter versus the other?

        Watching your videos is becoming an expensive hobby as I’ve acquired the Klipsch Forte IV, R8, and Denafrips DAV after watching your reviews…


        • I would use the 8 ohm taps as the Klipsch are 8 ohms. Let it run in for 50 hours or so and let the tubes settle. The sound will open up over the first few weeks of use.

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