across the bench [season-2] the electron strikes back
- Thread starter sae-7125
- Start date
sae-7125
Super Member
basic public demo chamber type of testing at a vintage hifi biz. dont have any informative measurements like speaker analysis over at audiosciencereview/amir.
sae-7125
Super Member
in a listening room that is around 17ft wide / 40ft long / 12.5ft ceiling (5.18m / 12.19m / 3.81m) plus an assortment of room/former-warehouse treatments. these speakers [when fixed/repaired] had no problem with bass. the low efficiency is quite noticeable so its not surprising the recommended wattage rating is questionably high. best not to go over 150w since most bookshelf drivers have an excursion limit before "xmax to the moon" occurs.
sae-7125
Super Member
near field (39in/1m realm) plus a 15w 300b setup (or heathkit w-5m, renovated) would do nicely which means any of the clean testing thd+n/sinad newer gear will be a financial delight and or cake walk, unless a listener prefers organic free-range pie. the five pairs that were acquired/tested/inspected/repaired found new homes relatively quickly. the ribbon tweeter was nice and detailed as a ribbon should be, without being harsh like an untamed horn loaded system. although recording quality can make any speaker sound terrible.
tube preamp + clean ss amp + reasonable 14ga cables, should achieve a favorable outcome. dont need bazillion dollar walk-on-water type of cables either...
tube preamp + clean ss amp + reasonable 14ga cables, should achieve a favorable outcome. dont need bazillion dollar walk-on-water type of cables either...
sae-7125
Super Member
and now, down to the matter of concern and repair
a new-in-box bookshelf speaker that measures around 180 milli-ohms. perfect for any normal amp channel, possibly not...
i would not be surprised if there are online reviewers wondering why one or both of their amp channels are going into protect. either instantly of when the volume is bumped up ever so slightly. some of the speakers received measured normal and yet they still needed repair. upcoming photos will show why that is.
sae-7125
Super Member
what do you suppose is electrically unusual in this photo.
its not like audio enthusiasts care what happens to their expensive amplifier output(s) or anything. didnt find any type of gasket/material (terminal plate) for these sealed speakers. passive radiator design typically prefers a sealed cabinet. seems like steve deckert of decware had some hybrid designs years ago.
Decware HDTv2 Reference Loudspeaker
The DECWARE High Definition Towers set the benchmark for single-driver crossoverless loudspeakers.
www.decwareproducts.com
sae-7125
Super Member
no idea who or what assembled these "empty the warehouse" speakers but... at least it was easy to fix, assuming the connected amp has some type of protection mode that is healthy and functional.
if this product had been received by a normal person who typically doesnt have access to or knowledge of a dmm, just image the social media rant and fox news coverage.
and then there is the movie rights after the "best seller" listed book has made its profitable debut. interviewing family members of the actors and actresses who had to endure a work environment more challenging than stanley kubrick could have thought up.
if this product had been received by a normal person who typically doesnt have access to or knowledge of a dmm, just image the social media rant and fox news coverage.
and then there is the movie rights after the "best seller" listed book has made its profitable debut. interviewing family members of the actors and actresses who had to endure a work environment more challenging than stanley kubrick could have thought up.
sae-7125
Super Member
ribbon tweeter from grs rt1.r-8
GRS RT1.R-8 Hi-Res Neo Ribbon Tweeter 8 Ohm
GRS RT1.R-8 Hi-Res Neo Ribbon Tweeter 8 OhmGRS RT1.R-8 Hi-Res Neo Ribbon Tweeter 8 OhmHi-Res. High-Value.GRS has released a line of premium "Hi-Res" ribbon tweeters employing the latest in materials and motor technology. The GRS Hi-Res Ribbon Tweeters effortlessly reach frequencies of 40kHz and...
www.parts-express.com
sae-7125
Super Member
nice frequency response
low wattage is of some concern, xover must be heavily padded since the speaker is rated for over 100w
sae-7125
Super Member
another speaker inspection and its results
using the LCR meter, established some baseline numbers for a more in-depth inspection.
most of the LS-100's tested within +/- 5% of the numbers shown above.
and that should do it for the "new" speaker(s) investigative diagnostics.