Old Ozzie Guy Posted March 24, 2023 Share Posted March 24, 2023 Hi all, I'm trying to find what the sensitivity (1w at 1mtr) may b for the above spker. I have a basic bass rig. Consists of an Ampeg Micro VR hd with a Hartke HiDrive 112. (Hofner "cavern" bass). All of which I put together second hand over 3weeks from pawnshop, private sellers. Now that I have switched horn off , I'm quite happy with sound of HiDrive.., though Im looking at another ,for a bit of "headroom" (&..more is always better!!??) . I don't want to add a different box and have a volume difference, therefore my question regarding Sensitivity. Thanks all Quote Link to comment Share on other sites More sharing options...
Old Ozzie Guy Posted March 24, 2023 Author Share Posted March 24, 2023 When I say another, I mean a different brand, and maybe configuration (2x10?) Quote Link to comment Share on other sites More sharing options...
Bill Fitzmaurice Posted March 24, 2023 Share Posted March 24, 2023 There's very little difference in the sensitivity of different cabs, but a lot of difference in their response and mechanically limited power. The only way to be sure of a good match is with identical cabs. 2 Quote Link to comment Share on other sites More sharing options...
Old Ozzie Guy Posted March 24, 2023 Author Share Posted March 24, 2023 Thanks for that, unfortunately the 112 is quite rare in Oz, actually unpopular here, I don't know why, it's a big sounding little thing, and the 4/8ohm select great idear!! So, next best thing would b HiDrive 2x10, same brand, series. At least they readily available.. Quote Link to comment Share on other sites More sharing options...
Sparky Mark Posted March 24, 2023 Share Posted March 24, 2023 1 hour ago, Old Ozzie Guy said: Thanks for that, unfortunately the 112 is quite rare in Oz, actually unpopular here, I don't know why, it's a big sounding little thing, and the 4/8ohm select great idear!! So, next best thing would b HiDrive 2x10, same brand, series. At least they readily available.. Be aware that your cab is one of the first generation HyDrive HX112 with a cast frame neodymium magnet driver. The current HD112 driver uses a ceramic magnet so may not be a perfect match. The current HL112 uses a pressed steel neodymium magnet driver so could be closer to your HX112. Quote Link to comment Share on other sites More sharing options...
Old Ozzie Guy Posted March 25, 2023 Author Share Posted March 25, 2023 Ok, thanks again S M. I was wondering difference between the HiDrive HD..HL.. all I could find online ,was usual "propaganda" , no actual specs, other than weight/ dimensions.. Back in D Good Old Days, ANY info sheet on gear ,pro or amateur ,had a "spec sheet".. Any way thanks again, I have been using Hartke with horn off.. for what I like sooo much better, Can't get over bottom end that little cab can get, though I have bass 10 o'clock on amp ,and 30 htz pulled 12 db down 60 htz 6 db down on graffic, for sound I'm chasing. All best regards Mate 1 Quote Link to comment Share on other sites More sharing options...
ebenezer Posted March 25, 2023 Share Posted March 25, 2023 I would guess around 95-96db or thereabouts. Quote Link to comment Share on other sites More sharing options...
Sparky Mark Posted March 25, 2023 Share Posted March 25, 2023 9 hours ago, Old Ozzie Guy said: Ok, thanks again S M. I was wondering difference between the HiDrive HD..HL.. all I could find online ,was usual "propaganda" , no actual specs, other than weight/ dimensions.. Back in D Good Old Days, ANY info sheet on gear ,pro or amateur ,had a "spec sheet".. Any way thanks again, I have been using Hartke with horn off.. for what I like sooo much better, Can't get over bottom end that little cab can get, though I have bass 10 o'clock on amp ,and 30 htz pulled 12 db down 60 htz 6 db down on graffic, for sound I'm chasing. All best regards Mate The quality of construction of the first generation HX drivers is excellent. Cast baskets are more expensive to make than pressed steel which may be why Hartke has moved to steel for its current 12s. There's a lot of information online about the benefits of cast aluminium baskets over pressed steel. If you can find another HX112 cab you'll have a high performance lightweight rig. Quote Link to comment Share on other sites More sharing options...
Bill Fitzmaurice Posted March 25, 2023 Share Posted March 25, 2023 Cast aluminum baskets are used for two reasons. With heavy ceramic magnets it's to be stiff enough so that the frame doesn't flex. With neo magnets it's to act as a heat sink. Steel is OK with lighter weight ceramic magnets, and with lower power neo magnet drivers that don't require much heat sinking. Eminence uses steel for their 150w Basslite series, cast aluminum for the 250w and higher Delta Lite and Kappa Lite. Where frame stiffness is concerned there are two requirements for very high sensitivity. One is a high flux magnet, the other is a tight magnetic gap. If the magnet weight causes the frame to flex it can cause voice coil rub with a tight gap. That was a problem with the 1968 Electro-Voice SRO 15, later re-badged as the first generation EVM. It had a cast aluminum frame, but with only four spokes, so it would flex under the weight of the 16 pound magnet structure. The second generation EVM cured that by going to an eight spoke frame. 3 1 Quote Link to comment Share on other sites More sharing options...
Sparky Mark Posted March 25, 2023 Share Posted March 25, 2023 3 hours ago, Bill Fitzmaurice said: Cast aluminum baskets are used for two reasons. With heavy ceramic magnets it's to be stiff enough so that the frame doesn't flex. With neo magnets it's to act as a heat sink. Steel is OK with lighter weight ceramic magnets, and with lower power neo magnet drivers that don't require much heat sinking. Eminence uses steel for their 150w Basslite series, cast aluminum for the 250w and higher Delta Lite and Kappa Lite. Where frame stiffness is concerned there are two requirements for very high sensitivity. One is a high flux magnet, the other is a tight magnetic gap. If the magnet weight causes the frame to flex it can cause voice coil rub with a tight gap. That was a problem with the 1968 Electro-Voice SRO 15, later re-badged as the first generation EVM. It had a cast aluminum frame, but with only four spokes, so it would flex under the weight of the 16 pound magnet structure. The second generation EVM cured that by going to an eight spoke frame. Is the below another benefit? "Aluminum does not conduct the magnetic field out of the gap thereby making the motor strength higher and the stray magnetic field lower." Quote Link to comment Share on other sites More sharing options...
Bill Fitzmaurice Posted March 25, 2023 Share Posted March 25, 2023 The mass of the steel of the frame is dwarfed in comparison to that of the top and bottom plates, so it's a minor concern. 2 Quote Link to comment Share on other sites More sharing options...
Old Ozzie Guy Posted March 27, 2023 Author Share Posted March 27, 2023 Thanks for all speaker wisdom !! I'v learned so much in last 2 months!! I really appreciate it all. Quote Link to comment Share on other sites More sharing options...
BassmanPaul Posted March 29, 2023 Share Posted March 29, 2023 Identical cabinets always work better when paired. What is the minimum impedance of your amp? Quote Link to comment Share on other sites More sharing options...
Old Ozzie Guy Posted March 29, 2023 Author Share Posted March 29, 2023 1 hour ago, BassmanPaul said: Identical cabinets always work better when paired. What is the minimum impedance of your amp? 4ohms Quote Link to comment Share on other sites More sharing options...
agedhorse Posted March 30, 2023 Share Posted March 30, 2023 Mid 90's. Be sure that you set your speaker to 8 ohm mode (assuming it's switchable between 4 and 8 ohms) I too would recommend a second speaker identical to your first. 2 Quote Link to comment Share on other sites More sharing options...
Sparky Mark Posted March 31, 2023 Share Posted March 31, 2023 (edited) . Edited March 31, 2023 by Sparky Mark Quote Link to comment Share on other sites More sharing options...
Old Ozzie Guy Posted March 31, 2023 Author Share Posted March 31, 2023 Thanks Mate. PS. U don't know of a gate pedal with more control parameters than threshold..ratio ? ie attack and release Quote Link to comment Share on other sites More sharing options...
itu Posted March 31, 2023 Share Posted March 31, 2023 Harley Benton Noise Gate NG-100, a grey one with 4 knobs. It can be used like the expensive Boss Slow Gear unit. Quote Link to comment Share on other sites More sharing options...
Downunderwonder Posted March 31, 2023 Share Posted March 31, 2023 1 hour ago, Sparky Mark said: mid 90s Decibels of sensitivity not years methinks. 1 1 Quote Link to comment Share on other sites More sharing options...
Sparky Mark Posted March 31, 2023 Share Posted March 31, 2023 (edited) 1 hour ago, Downunderwonder said: Decibels of sensitivity not years methinks. Ah yes, my misinterpretation . Cheers. Edited March 31, 2023 by Sparky Mark Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.