Menu
Forum
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Car Audio Discussion
General Car Audio
Car Audio Build Logs
Car Audio Equipment
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Help
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Car Audio Classifieds
Car Audio Wanted
Classifieds Member Feedback
Gallery
New media
New comments
Search media
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Test
Forum
Search
Search titles only
Search titles only
Log in / Join
Search
Search titles only
Search titles only
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Menu
Reply to thread
Forum
Car Audio Equipment
Amplifiers
Rockford R750-1D (750W) vs Sundown SALT-2 (2000W) barely any difference in volume? No voltage drop when clipping?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Terrum" data-source="post: 8812502" data-attributes="member: 657229"><p>As per a previous thread I was looking to upgrade my single Sundown SA-12 Classic (750W) to dual Sundown SA-12 V.2s (2x1000W). I took the plunge to spend out a little more than intended for an amp that would work best with my lacking alternator (90A) but my aftermarket battery (Stinger 1850W) so got myself the Sundown SALT-2 merely because it is supposed to perform great even at low voltages.</p><p></p><p>I got a little excited and installed it early with the risk in mind that it would blow my SA-12 Classic if I cranked it. I started out with the sub disconnected from the amp and tuning the gains to a 0db 40Hz tone with the bass knob halfway (for headroom with quieter songs and on-demand control with the clipping light) and the headunit maxed (but unclipped).</p><p></p><p>I was disappointed to say the least when I connected the sub back to the amp and barely noticed a difference in volume even when I took the risk to put full load on the sub and it only seemed slightly louder at max volume (without clipping on either the headunit or amp) compared to my Rockford R750-1D.</p><p></p><p>The voltage on the bass knob stays within 13-14v even when clipping. No smells and no mechanical noise - I know the SA-12 Classic's power is underrated but I didn't think it could handle 2000W <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite18" alt=":ROFLMAO:" title="ROFL :ROFLMAO:" loading="lazy" data-shortname=":ROFLMAO:" /> I also noticed that the SALT seems to be louder on the 'punchier' notes (kicks) but quieter on the basslines, compared to my Rockford R750-1D (750W) where both the kicks and basslines were pretty equal.</p><p></p><p>Another thing I will mention is that my headunit only has a single (mono) RCA output for amplifiers. Rockford confirmed that the left channel works as mono when only one RCA is plugged in, Sundown have yet to respond to me but for now I have kept the RCA cable in the left channel of the SALT amp. When playing a stereo bass tone (that wipes from left to right channels) the SALT amp still plays both channels. I know that a Y splitter will increase the signal but I don't know if that means an increase in volume without clipping or if I have just made up for that lesser signal by upping the gains with one RCA connected.</p><p></p><p>I've tuned both amps very similarly with subsonic filters turned as low as possible, and low pass filters turned to around 100Hz, I'm just a little confused as to why I'm getting very little difference in volume considering the huge jump in RMS wattage and wondering if anyone has any tips or advice.</p><p></p><p>Just to be clear everything I have described above is accurate regardless of whether the car is on (@14.4v) or off (@12.6v).</p><p></p><p>Many thanks for reading and I look forward to any discussions <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Terrum, post: 8812502, member: 657229"] As per a previous thread I was looking to upgrade my single Sundown SA-12 Classic (750W) to dual Sundown SA-12 V.2s (2x1000W). I took the plunge to spend out a little more than intended for an amp that would work best with my lacking alternator (90A) but my aftermarket battery (Stinger 1850W) so got myself the Sundown SALT-2 merely because it is supposed to perform great even at low voltages. I got a little excited and installed it early with the risk in mind that it would blow my SA-12 Classic if I cranked it. I started out with the sub disconnected from the amp and tuning the gains to a 0db 40Hz tone with the bass knob halfway (for headroom with quieter songs and on-demand control with the clipping light) and the headunit maxed (but unclipped). I was disappointed to say the least when I connected the sub back to the amp and barely noticed a difference in volume even when I took the risk to put full load on the sub and it only seemed slightly louder at max volume (without clipping on either the headunit or amp) compared to my Rockford R750-1D. The voltage on the bass knob stays within 13-14v even when clipping. No smells and no mechanical noise - I know the SA-12 Classic's power is underrated but I didn't think it could handle 2000W :ROFLMAO: I also noticed that the SALT seems to be louder on the 'punchier' notes (kicks) but quieter on the basslines, compared to my Rockford R750-1D (750W) where both the kicks and basslines were pretty equal. Another thing I will mention is that my headunit only has a single (mono) RCA output for amplifiers. Rockford confirmed that the left channel works as mono when only one RCA is plugged in, Sundown have yet to respond to me but for now I have kept the RCA cable in the left channel of the SALT amp. When playing a stereo bass tone (that wipes from left to right channels) the SALT amp still plays both channels. I know that a Y splitter will increase the signal but I don't know if that means an increase in volume without clipping or if I have just made up for that lesser signal by upping the gains with one RCA connected. I've tuned both amps very similarly with subsonic filters turned as low as possible, and low pass filters turned to around 100Hz, I'm just a little confused as to why I'm getting very little difference in volume considering the huge jump in RMS wattage and wondering if anyone has any tips or advice. Just to be clear everything I have described above is accurate regardless of whether the car is on (@14.4v) or off (@12.6v). Many thanks for reading and I look forward to any discussions :) [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Equipment
Amplifiers
Rockford R750-1D (750W) vs Sundown SALT-2 (2000W) barely any difference in volume? No voltage drop when clipping?
Top
Menu
Home
Refresh