JTR Speakers Growler (2015) vs Monoprice Monolith M-215

Short answer: the Monoprice Monolith M-215, if you are buying new. The JTR Speakers Growler (2015) ranks higher than it (#13 vs #24 of 143 subwoofers, 4.5/5 vs 4.4/5) but is discontinued, so only consider it used; the Monoprice Monolith M-215 is still sold new at $2,999.99.

What the JTR Speakers Growler (2015) does well: A 12 inch ported subwoofer with output close to far bigger flagships, a strong used pick now that it is discontinued. Watch for: Ported design room interaction, 99.2 lbs (45 kg) size, and $2995 cost.

The case for the Monoprice Monolith M-215: A dual 15 inch ported subwoofer with excellent output down to the lowest notes, a strong value for large home theaters. The tradeoff: The 1074.4H x 508.0W x 701.0D mm cabinet and 216.1 lbs (98.0 kg) mass make this a serious placement and moving commitment.

Buy the Monoprice Monolith M-215 new; the JTR Speakers Growler (2015) is no longer sold new, so it only makes sense as a used find.

Want more options? Browse the full Subwoofers rankings.

Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

As an eBay Partner, we may be compensated if you make a purchase.

Specifications Side By Side

Related Speaker Comparisons

More worthwhile head-to-heads for JTR Speakers Growler (2015):

• JTR Speakers Growler (2015) vs WW Speaker Cabinets X21 - B&C 21DS115-4
• JTR Speakers Growler (2015) vs Pro Audio Technology LFC-24sm
• JTR Speakers Captivator S2 vs JTR Speakers Growler (2015)
• JTR Speakers Growler (2015) vs Funk Audio Ultra 24.0
• Danley Sound Labs DTS10 vs JTR Speakers Growler (2015)