Short answer: both are discontinued, so this only matters if you are buying used. Used, the JBL Studio 630 is the better pick: it ranks #123 of 203 bookshelf speakers by sound quality (rated 3.6/5), against #175 (rated 2.9/5) for the Klipsch RP-600M. If you want one new, the Klipsch RP-600M II replaces the Klipsch RP-600M and is rated 3.7/5 at $449.99.
The JBL Studio 630 is the better-sounding, deeper-bass option. Excellent directivity linearity: harmonics of the same instrument stay collocated in the soundstage instead of drifting between positions, giving precise, stable imaging that holds up well into higher frequencies where many speakers start to beam and narrow. Its bass reaches about 54.2Hz before falling 3dB, against 73Hz for the Klipsch RP-600M. The catch: Noticeable mid-range dip/scoop relative to the higher frequencies: not dramatic, but audibly “missing” something by the second or third track.
What the Klipsch RP-600M does well: More linear horizontal dispersion than the updated RP-600M II: as you move side-to-side, the tonal character changes less, a genuine advantage for off-axis listening consistency. Watch for: A strong, annoying resonance in the lower vocal range around 300Hz stands out clearly (though it can be EQ’d out).
Buy the JBL Studio 630 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the Klipsch RP-600M II, which replaces the Klipsch RP-600M.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| JBL Studio 630 | Klipsch RP-600M | |
|---|---|---|
| Price | $699 per pair Discontinued | $239.97 per pair Discontinued |
| Ranked | #123 of 203 in Large Size Bookshelf Speakers | #175 of 203 in Large Size Bookshelf Speakers |
| Drivers | 6.5” PolyPlas cone woofer, 1” compression driver (2414H-1) with waveguide | 6.5” Cerametallic cone woofer, 1” titanium LTS vented tweeter with Tractrix horn |
| Dimensions | 14-13/16”H x 9”W x 11-5/16”D | 15.7”H x 8”W x 11.9”D (398.8 x 203.2 x 302.3 mm) |
| Weight | 19.8 lbs (9 kg) each | 16.1 lbs (7.3 kg) each |
| Impedance | 6 ohms nominal, 4.7 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms nominal, 3.5 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 83.2dB (measured, Erin’s Audio Corner; 85dB manufacturer specified) | 85.2dB (measured, Erin’s Audio Corner) |
| Frequency Response | 45Hz - 40,000Hz (manufacturer specified) | - |
| Bass Extension (-3dB) | 54.2Hz (measured, Erin’s Audio Corner) | 73Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 37.0Hz (measured, Erin’s Audio Corner) | 40Hz (measured, Erin’s Audio Corner) |
| Power Handling | up to 150W | - |
| Spinorama Preference Score | 3.67 | 3.66 |
| Spinorama Preference Score with Perfect Sub | 5.68 | 5.61 |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported |
Related Speaker Comparisons
How JBL Studio 630 compares with other leading options:
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- JBL Studio 630 vs KEF R3 Meta
- JBL Studio 630 vs KEF Q Concerto Meta
- AsciLab F6B vs JBL Studio 630
- JBL Studio 630 vs MoFi SourcePoint 8
Prices on this page were last checked October 7, 2026 at 9:25 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.
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The Two Speakers In Full
JBL Studio 630: $699 per pair Discontinued eBay
Same family: the JBL Studio 698 (floorstanding, rated 4.3/5).
Pros: Excellent directivity linearity: harmonics of the same instrument stay collocated in the soundstage instead of drifting between positions, giving precise, stable imaging that holds up well into higher frequencies where many speakers start to beam and narrow. Good compression behavior: mid-bass stays taut and controlled from low to high volume without the sound falling apart or distorting as you turn it up. A pleasant, controlled mid-bass bump in the 60-100 Hz range adds punch to kick drums without bleeding into an uncontrolled boom on bass guitar. Horizontal radiation holds steady off-axis (about ±60°), so toe-in isn’t fussy. Compared directly to its predecessor, the JBL Studio 530, the reviewer would pick the 630 (smoother trend line through the upper mids and treble, and likely more dynamic headroom) as long as you’re willing to EQ. Measured bass extension of 54.2Hz (-3dB), with a measured sensitivity of 83.2dB.
Cons: Noticeable mid-range dip/scoop relative to the higher frequencies: not dramatic, but audibly “missing” something by the second or third track. Some tracks read as forward or aggressive around 2 kHz, like the upper frequencies are jumping out at you rather than sitting in stage depth. Needs EQ to bring the mid-range back up to be fully recommendable; without EQ available, the reviewer says he’d look at a different speaker entirely. Measured sensitivity (about 83.2dB) runs noticeably below the 85dB manufacturer spec, likely a byproduct of the mid-range dip skewing the average downward. Discontinued and no longer sold new.
Full JBL Studio 630 review and specifications →
| Bass Extension (-10dB) | 37.0Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 54.2Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14-13/16”H x 9”W x 11-5/16”D |
| Drivers | 6.5” PolyPlas cone woofer, 1” compression driver (2414H-1) with waveguide |
| Frequency Response | 45Hz - 40,000Hz (manufacturer specified) |
| Impedance | 6 ohms nominal, 4.7 ohms minimum (measured, Erin’s Audio Corner) |
| Power Handling | up to 150W |
| Sensitivity | 83.2dB (measured, Erin’s Audio Corner; 85dB manufacturer specified) |
| Spinorama Preference Score | 3.67 |
| Spinorama Preference Score with Perfect Sub | 5.68 |
| Weight | 19.8 lbs (9 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL Studio 630 vs Behringer B2030P
- JBL Studio 630 vs Dynaudio Emit 20
- JBL Studio 630 vs Klipsch RP-600M II
- JBL Studio 630 vs Infinity IL10
- JBL Studio 630 vs Dynaudio Special Forty
- JBL Studio 630 vs ELAC Debut 2.0 B6.2
- JBL Studio 630 vs SVS Prime Bookshelf
- JBL Studio 630 vs Infinity Reference R162
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Klipsch RP-600M: $239.97 per pair Discontinued Amazon eBay
Newer model: the Klipsch RP-600M II, ranked higher, rated 3.7/5.
Same family: the Klipsch RP-500M (smaller bookshelf, rated 3.4/5).
Pros: More linear horizontal dispersion than the updated RP-600M II: as you move side-to-side, the tonal character changes less, a genuine advantage for off-axis listening consistency. Takes exceptionally well to EQ correction (miniDSP or similar), letting a knowledgeable owner fix its tonal shortcomings without needing to upgrade. Standard 6.5” woofer/horn-tweeter two-way design with reasonably gradual bass rolloff (F3 ~70Hz, F10 ~40Hz) rather than a steep vented-enclosure cutoff. Measured bass extension of 73Hz (-3dB), with a measured sensitivity of 85.2dB.
Cons: A strong, annoying resonance in the lower vocal range around 300Hz stands out clearly (though it can be EQ’d out). Overall tonal balance is notably less neutral than the newer RP-600M II, with a roughly 3-4dB suckout in the estimated in-room response. The waveguide doesn’t extend flush to the baffle edge, increasing diffraction compared to the redesigned version. Klipsch’s marketed sensitivity spec (about 96dB) is a half-space, in-room-style rating roughly 9dB above the true anechoic figure (closer to 85-86dB), which can mislead buyers comparing spec sheets. Elevated treble on-axis, similar to its successor, benefits from toe-out or careful placement. Vertical listening tolerance is limited to about ±10° from the tweeter axis. Still needs a subwoofer for real bass weight; a boost around 120Hz gives kick drums their “tambour” without the underlying “meat.”. Discontinued.
Full Klipsch RP-600M review and specifications →
| Bass Extension (-10dB) | 40Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 73Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15.7”H x 8”W x 11.9”D (398.8 x 203.2 x 302.3 mm) |
| Drivers | 6.5” Cerametallic cone woofer, 1” titanium LTS vented tweeter with Tractrix horn |
| Impedance | 8 ohms nominal, 3.5 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.2dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.66 |
| Spinorama Preference Score with Perfect Sub | 5.61 |
| Weight | 16.1 lbs (7.3 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: The Truth about Klipsch’s “NEW” Sound. RP-600M Update. More from Erin’s Audio Corner →
- Erin’s Audio Corner Website Klipsch RP-600M
- GR-Research: We Bought The "NEW" RP-600M II Is KLIPSCH Listening?! More from GR-Research →
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
- Head-to-Head Comparisons
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