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MBK's Diatone Big Blue System |
| Last Update: March 20, 2002 at 05:18:21 | IP Address: 203.125.250.83 |
| Amplifier: | Rotel integrated used as preamp to active EQ and active X-O with BB OPA 548 chip amplifiers (bi-amped 2-way speakers) |
| Preamplifier (or None if Integrated): | - |
| Speakers: | DIY two way with double 10" Vifa down from 310 Hz and single Diatone 610 above used as full range. Active X-O, bi-amplified (see above). The speakers are dynamic dipoles, so EQ is necessary to compensate dipole roll-off. |
| Sources: | |
| CD Player/DAC: | Rotel RCD955AX, tweaked output |
| Turntable/Phono Stage: | none |
| Other Source(s): | TEAC tape deck, Denon Tuner |
| Other Accessories/Room/Misc.: | |
| Speaker Cables/Interconnects: | interconnects: Radio Shack speaker cable: zip wire |
| Other (Power Conditioner, Racks etc.): | DIY power filter |
| Tweaks: | CD player modified to non-oversampling, i/v stage in testing, currently using BB OPA 2134 |
| Room Comments/Treatments: | room with many corners, concrete, very hard to get right listening position |
| Music Preferences and Comments: | |
| Music Used (Genre/Selections): | all sorts: "world" (African, Indian, Cuban, etc); Blues; voices; Alt. Rock, some Rap, some Pop, some classic Rock, classical: mostly smaller ensembles and classic guitar pieces |
| System Goals/Comments: | High resolution, naturalness, dynamic capability to reproduce music accurately, power flat (controlled dispersion), clean bass and mids through dipoles, clean highs through good source/amp/driver; non-annoying imaging (better less imaging than a fake one), no spectral contamination, low IMD (large orchestral pieces should remain detailed) |
| System Strengths: | Clean bass, natural mids, integration |
| System Weaknesses: | mathematically I can calculate that my system can no way reproduce accurate dynamics (+- 30 dB from average listening level): not enough excursion/power handling of both amps and speaker drivers. This I intend to fix through a second full range driver and a tweeter. The tweeter should also alleviate problem number 2, dispersion control: the Diatones as large cones will beam at >2500 Hz. Also due to above limitations large orchestral pieces are currently less natural and detailed than I wished. |
| Video/HT System: None | |
| TV/Projector: | - |
| Processor/Receiver/Amplifiers: | - |
| Speakers (Center, Surrounds, Sub): | - |
| Sources (DVD/VCR): | - |
| Other HT Gear: | - |
| Comments on HT System: | - |
| URL Link: http://melhuish.org/audio/diy28.htm | |
| Other Interests/Hobbies/Occupation: | Biotechnology Consultant in Singapore. Other interests: Photography, Travel, Architecture and Living |