TL;DR version: Shinjitsu Audio Horn 2+2s are not plug and play (as advertised) with all low frequency sections. Based on my experience trying to blend them with two different woofer cabinet setups, cannot recommend them.
Back in May 2025 I purchased a pair of Shinjitsu Audio Horn 2+2 for $1399 shipped to my door. The only question the vendor asked was what woofers I planned to use with the horns. I shared that a JBL 127H-1 woofer in a 1.43 ft3 ported cabinet would be used and they like to run crossed over at 1800 Hz (prototype Ewaves). These woofers sounded great using an active crossover and paired with a different compression BMS driver/JBL waveguide combo. I just wanted to eliminate the need for an active crossover and bi-amp setup.
Upon receiving the Horn 2+2s, hooked them up to the JBL woofer bass cabinets and started listening. Using a familiar test track playlist, the music was immediately fatiguing. The woofers sounded “shouty” to my ears.
Pulled out the laptop and UMIK-1 and ran some REW sweeps. The sweeps revealed the woofer was playing up to nearly 3000 Hz before attenuating. Shared this with Shinjitsu Audio and the response was I needed to add a baffle step compensator. Really? These 2+2 horns are advertised as basically plug and play.
Fast forward to September 2025. Pulled a pair of Tyler Acoustics bass cabinets out of storage that use an Aurum Cantus AC250 MKII woofer. Hooked these up to the 2+2s. Started playing the same very familiar test track playlist. The woofers immediately started distorting at any volume level near normal, ~80dB.
To make sure it wasn’t a woofer issue, pulled out the active crossover, two identical amps and bi-amped the 2+2/woofer combo, bypassing the 2+2 crossover completely. Volume balanced the low and high frequency sections using an SPL meter. Set the active crossover to ~1800 Hz. Had to also do a little DSP using Roon to flatten the frequency response. This set up sounded fine. So, no woofer issues.
Informed the Shinjitsu Audio of this result and the response was a Zobel network was probably needed on the woofer to tame the impedance curve. Asked for guidance on the Zobel component values and was sent the name of a web site, speakergenerator.com, that is not operational. That is the extent of the help received.
In fairness, back in May Shinjitsu Audio did offer a full refund or to send the inductors needed to fix the woofer section of the 2+2 crossover. I opted for the inductors and said would install them myself. No new inductors were ever shipped and the value of the required inductor was never shared. Wanted to make these 2+2 horns work. That is the story so far. Not a good one.
The Horn 2+2 is no longer offer for sale. A new, improved “Pro” version is now for sale. Based on this experience, cannot recommend the Shinjitsu Audio Horn 2+2.
Note: pictures copied from a for sale ad (not mine) since the product is no longer shown on the vendors web site.
Back in May 2025 I purchased a pair of Shinjitsu Audio Horn 2+2 for $1399 shipped to my door. The only question the vendor asked was what woofers I planned to use with the horns. I shared that a JBL 127H-1 woofer in a 1.43 ft3 ported cabinet would be used and they like to run crossed over at 1800 Hz (prototype Ewaves). These woofers sounded great using an active crossover and paired with a different compression BMS driver/JBL waveguide combo. I just wanted to eliminate the need for an active crossover and bi-amp setup.
Upon receiving the Horn 2+2s, hooked them up to the JBL woofer bass cabinets and started listening. Using a familiar test track playlist, the music was immediately fatiguing. The woofers sounded “shouty” to my ears.
Pulled out the laptop and UMIK-1 and ran some REW sweeps. The sweeps revealed the woofer was playing up to nearly 3000 Hz before attenuating. Shared this with Shinjitsu Audio and the response was I needed to add a baffle step compensator. Really? These 2+2 horns are advertised as basically plug and play.
Fast forward to September 2025. Pulled a pair of Tyler Acoustics bass cabinets out of storage that use an Aurum Cantus AC250 MKII woofer. Hooked these up to the 2+2s. Started playing the same very familiar test track playlist. The woofers immediately started distorting at any volume level near normal, ~80dB.
To make sure it wasn’t a woofer issue, pulled out the active crossover, two identical amps and bi-amped the 2+2/woofer combo, bypassing the 2+2 crossover completely. Volume balanced the low and high frequency sections using an SPL meter. Set the active crossover to ~1800 Hz. Had to also do a little DSP using Roon to flatten the frequency response. This set up sounded fine. So, no woofer issues.
Informed the Shinjitsu Audio of this result and the response was a Zobel network was probably needed on the woofer to tame the impedance curve. Asked for guidance on the Zobel component values and was sent the name of a web site, speakergenerator.com, that is not operational. That is the extent of the help received.
In fairness, back in May Shinjitsu Audio did offer a full refund or to send the inductors needed to fix the woofer section of the 2+2 crossover. I opted for the inductors and said would install them myself. No new inductors were ever shipped and the value of the required inductor was never shared. Wanted to make these 2+2 horns work. That is the story so far. Not a good one.
The Horn 2+2 is no longer offer for sale. A new, improved “Pro” version is now for sale. Based on this experience, cannot recommend the Shinjitsu Audio Horn 2+2.
Note: pictures copied from a for sale ad (not mine) since the product is no longer shown on the vendors web site.
