I've been looking at this thing for a couple of years now and waiting for someone to write a good review of it. I had assumed that since it is made by "Boss" that it would surely sound like something you could buy from Pep Boys or Autozone (not good), but I was wrong. The Pyramid CR79G it replaced was that though. I have a 1997 Tacoma with a cheepskate DIY four-way which consists of a JVC KDA815 ($75 shipped on Ebay), a 200w RMS 10" powered MTX sub ($89 shipped from Amazon) , a Pioneer 35w x 4 amp and Clarion 50w x 4 amp ($110 for both, Craigslist).
Midbass is currently handled by Polk SR6500 6.75" in the doors ($60 used from Ebay in 2006, will be replaced with Dayton RS180-4s, as soon as they are back in stock), midrange by the 4" from the top of the line JL Audio 3-way set* ($40 used from Ebay in 2006) mounted in Q-logic kick panels ($200+ from Crutchfield in 2006 - DO NOT BUY THESE, they are awfull) and Vifa D26NC55 tweeters I got for $1 each on Ebay from the M&K bankruptcy liquidation. I sealed the door holes with plexi-glass and deadened them with Frost King foam/foil Duct insulation from Lowes.
Thermwell Products FV516 "FROST KING" FOAM & FOIL DUCT INSULATION 12"X1/8"X15' (Pack of 4)
So for this to work I need two bandpass XOs, one for midbass and one for midrange. The JVC has front, rear and sub 5V pre-outs with a lowpass on the sub and a highpass for front/rear. I connected the sub out to the MTX and the front/rear to the front/rear inputs on the BX55, so it gets the highpass from the JVC at 62hz. The sub outputs on the BX55 go to the Clarion and it is bridged to power the Polks, so there is my midbass bandpass - 62 to about 850. The bandpass for the mids is set at 1000-4200, and I have the tweets at 4600 up. I had previously tried various passive XOs to bandpass the mids (the Pyramid has only a highpass) but was never happy with the sound.
Whether the Boss really has 9V (!!!) out or not I can't say, but I can say that its signal is much stronger than my old XO, so I got to turn the gains down on my amps. And that there is less distortion at high volumes now, and the the unit added no noise to the system that I can hear. I can also say that the XO points work as they are supposed to. This thing is a really good buy at this price.
*I recently took the JL/Qform kicks out and tried some satellites from the Altec Lansing ADA890 computer speakers in their place velcroed to the stock kick panels. Ghetto I know but the sound is much better than the JLs pointed at the trans tunnel could ever hope to do. I cut the tweet wires, wired the two 3" paper and foam drivers for a for a 4ohm load and stuffed the little cubes with polyfill. The four drivers get 17 watts each and sound suprisingly good in this bandwidth. They consist of two cubes slightly twisted so one points at one seat and the other points at the opposite seat. They were free. They play much nicer now that they are crossed higher than the 400 that the Pyramid allowed.
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This Item  BOSS Audio Systems BX55 2 3 Way Pre-Amp Car Electronic Crossover with Remote Subwoofer Control |  |  |  | |
| Price | $54.39 | -26% $169.21 List: $228.00 | $45.59 | $47.00 |
| Delivery | Get it as soon as Tuesday, May 14 | Get it as soon as Monday, May 13 | Get it as soon as Tuesday, May 14 | — |
| Customer Ratings | ||||
| Easy to install | ||||
| Sound quality | ||||
| Value for money | ||||
| Sold By | Speece, Inc. | Speece, Inc. | Speece, Inc. | Audio Watt Store |
| number of channels | 3 | 5 | 2 | 4 |
| voltage | 9 volts | — | 8 volts | 8.5 volts |
| mounting type | Car Mount | Car Mount | Surface Mount | Surface Mount |
Reviews with images
AWESOME versatility for the price.
I bought two of these crossovers based on my complicated requirements and the very reasonable price. I have 12 speakers fed by 5 amplifiers comprising a total of 10 channels. Each pair of channels having unique frequency requirements. I needed high frequency high-pass for my tweeters in the doors, I needed a wide midrange bandpass for the 6.5s in the kick panels and the console. For the rear I needed low frequency high-pass for some satellite mini box speakers and I needed direct-in low-pass for my two monoblock amps driving four 10" free-air subwoofers. I researched a whole bunch of crossovers until I found these. I had been running two Yamaha YEC-400 crossovers since the late 1980's. However, I wanted to step up to 4" Polk coaxials in the doors and the Yamahas did not have a low enough high pass cutoff frequency for what I was trying to do.This crossover provides excellent flexibilty in both variable cutoff frequency including frequency-band overlap and awesome input/output capability. The additional bass boost option works great in making four 10s sound like 12" subs. I could go on about how my whole system is configured but suffice it to say these crossovers were PERFECT for my application. I even had a leftover set of outputs to drive my 19" rackmount VU meter I mounted in the trunk for car shows.UPDATE: I have finally got my system fine tuned. I added noise gates due to some residual noise between tracks from my 20 year old Pioneer DEQ-7600s. Anyway. These crossovers have REALLY allowed me to get my system really dialed in. My sound stage is right in my face and the bass blows away Surround Sound in any home theater. I have really taking a liking to music that has been mixed/engineered using a Sub-octavizer (look it up).
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Top reviews from other countries
Paulino Contreras
Exelente crossover electrónico para mejorar tu sonido
Reviewed in Mexico on May 17, 2022Style: BX45 2/3-WayVerified Purchase
Tapou
Bien arrivé
Reviewed in France on November 30, 2022Style: BX55 2/3-WayVerified Purchase
Tapou
Reviewed in France on November 30, 2022
Merci beaucoup
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Eric
Petit prix bon rendement. Impressionnant
Reviewed in Canada on April 13, 2019Style: BX45 2/3-WayVerified Purchase
